From b51296c06433d4923e4dcfd2bc104ae3ab67fb43 Mon Sep 17 00:00:00 2001 From: "Bradley T. Hughes" Date: Fri, 3 Feb 2012 12:28:13 +0100 Subject: Add SHA-224, SHA-256, SHA-384, and SHA-512 support to QCryptographicHash This adds Sha224, Sha256, Sha384, and Sha512 enum values to QCryptographicHash::Algorithm. The implementation comes from RFC 6234, http://tools.ietf.org/html/rfc6234, which is added to src/3rdparty/rfc6234. Only the headers and SHA-2 code is included in src/3rdparty/rfc6234 (the SHA1, HMAC, and HKDF code is not included). Change-Id: I85139fd118291f15efc22899a5ddd1cc83810cfb Reviewed-by: Lars Knoll --- src/3rdparty/rfc6234/sha-private.h | 28 + src/3rdparty/rfc6234/sha.h | 356 +++++++++++++ src/3rdparty/rfc6234/sha224-256.c | 583 ++++++++++++++++++++ src/3rdparty/rfc6234/sha384-512.c | 1034 ++++++++++++++++++++++++++++++++++++ 4 files changed, 2001 insertions(+) create mode 100644 src/3rdparty/rfc6234/sha-private.h create mode 100644 src/3rdparty/rfc6234/sha.h create mode 100644 src/3rdparty/rfc6234/sha224-256.c create mode 100644 src/3rdparty/rfc6234/sha384-512.c (limited to 'src/3rdparty') diff --git a/src/3rdparty/rfc6234/sha-private.h b/src/3rdparty/rfc6234/sha-private.h new file mode 100644 index 0000000000..6e9c4520fb --- /dev/null +++ b/src/3rdparty/rfc6234/sha-private.h @@ -0,0 +1,28 @@ +/************************ sha-private.h ************************/ +/***************** See RFC 6234 for details. *******************/ +#ifndef _SHA_PRIVATE__H +#define _SHA_PRIVATE__H +/* + * These definitions are defined in FIPS 180-3, section 4.1. + * Ch() and Maj() are defined identically in sections 4.1.1, + * 4.1.2, and 4.1.3. + * + * The definitions used in FIPS 180-3 are as follows: + */ + +#ifndef USE_MODIFIED_MACROS +#define SHA_Ch(x,y,z) (((x) & (y)) ^ ((~(x)) & (z))) +#define SHA_Maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z))) +#else /* USE_MODIFIED_MACROS */ +/* + * The following definitions are equivalent and potentially faster. + */ + +#define SHA_Ch(x, y, z) (((x) & ((y) ^ (z))) ^ (z)) +#define SHA_Maj(x, y, z) (((x) & ((y) | (z))) | ((y) & (z))) + +#endif /* USE_MODIFIED_MACROS */ + +#define SHA_Parity(x, y, z) ((x) ^ (y) ^ (z)) + +#endif /* _SHA_PRIVATE__H */ diff --git a/src/3rdparty/rfc6234/sha.h b/src/3rdparty/rfc6234/sha.h new file mode 100644 index 0000000000..1ffd688079 --- /dev/null +++ b/src/3rdparty/rfc6234/sha.h @@ -0,0 +1,356 @@ +/**************************** sha.h ****************************/ +/***************** See RFC 6234 for details. *******************/ +/* + Copyright (c) 2011 IETF Trust and the persons identified as + authors of the code. All rights reserved. + + Redistribution and use in source and binary forms, with or + without modification, are permitted provided that the following + conditions are met: + + - Redistributions of source code must retain the above + copyright notice, this list of conditions and + the following disclaimer. + + - Redistributions in binary form must reproduce the above + copyright notice, this list of conditions and the following + disclaimer in the documentation and/or other materials provided + with the distribution. + + - Neither the name of Internet Society, IETF or IETF Trust, nor + the names of specific contributors, may be used to endorse or + promote products derived from this software without specific + prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ +#ifndef _SHA_H_ +#define _SHA_H_ + +/* + * Description: + * This file implements the Secure Hash Algorithms + * as defined in the U.S. National Institute of Standards + * and Technology Federal Information Processing Standards + * Publication (FIPS PUB) 180-3 published in October 2008 + * and formerly defined in its predecessors, FIPS PUB 180-1 + * and FIP PUB 180-2. + * + * A combined document showing all algorithms is available at + * http://csrc.nist.gov/publications/fips/ + * fips180-3/fips180-3_final.pdf + * + * The five hashes are defined in these sizes: + * SHA-1 20 byte / 160 bit + * SHA-224 28 byte / 224 bit + * SHA-256 32 byte / 256 bit + * SHA-384 48 byte / 384 bit + * SHA-512 64 byte / 512 bit + * + * Compilation Note: + * These files may be compiled with two options: + * USE_32BIT_ONLY - use 32-bit arithmetic only, for systems + * without 64-bit integers + * + * USE_MODIFIED_MACROS - use alternate form of the SHA_Ch() + * and SHA_Maj() macros that are equivalent + * and potentially faster on many systems + * + */ + +#include +/* + * If you do not have the ISO standard stdint.h header file, then you + * must typedef the following: + * name meaning + * uint64_t unsigned 64-bit integer + * uint32_t unsigned 32-bit integer + * uint8_t unsigned 8-bit integer (i.e., unsigned char) + * int_least16_t integer of >= 16 bits + * + * See stdint-example.h + */ + +#ifndef _SHA_enum_ +#define _SHA_enum_ +/* + * All SHA functions return one of these values. + */ +enum { + shaSuccess = 0, + shaNull, /* Null pointer parameter */ + shaInputTooLong, /* input data too long */ + shaStateError, /* called Input after FinalBits or Result */ + shaBadParam /* passed a bad parameter */ +}; +#endif /* _SHA_enum_ */ + +/* + * These constants hold size information for each of the SHA + * hashing operations + */ +enum { + SHA1_Message_Block_Size = 64, SHA224_Message_Block_Size = 64, + SHA256_Message_Block_Size = 64, SHA384_Message_Block_Size = 128, + SHA512_Message_Block_Size = 128, + USHA_Max_Message_Block_Size = SHA512_Message_Block_Size, + + SHA1HashSize = 20, SHA224HashSize = 28, SHA256HashSize = 32, + SHA384HashSize = 48, SHA512HashSize = 64, + USHAMaxHashSize = SHA512HashSize, + + SHA1HashSizeBits = 160, SHA224HashSizeBits = 224, + SHA256HashSizeBits = 256, SHA384HashSizeBits = 384, + SHA512HashSizeBits = 512, USHAMaxHashSizeBits = SHA512HashSizeBits +}; + +/* + * These constants are used in the USHA (Unified SHA) functions. + */ +typedef enum SHAversion { + SHA1, SHA224, SHA256, SHA384, SHA512 +} SHAversion; + +/* + * This structure will hold context information for the SHA-1 + * hashing operation. + */ +typedef struct SHA1Context { + uint32_t Intermediate_Hash[SHA1HashSize/4]; /* Message Digest */ + + uint32_t Length_High; /* Message length in bits */ + uint32_t Length_Low; /* Message length in bits */ + + int_least16_t Message_Block_Index; /* Message_Block array index */ + /* 512-bit message blocks */ + uint8_t Message_Block[SHA1_Message_Block_Size]; + + int Computed; /* Is the hash computed? */ + int Corrupted; /* Cumulative corruption code */ +} SHA1Context; + +/* + * This structure will hold context information for the SHA-256 + * hashing operation. + */ +typedef struct SHA256Context { + uint32_t Intermediate_Hash[SHA256HashSize/4]; /* Message Digest */ + + uint32_t Length_High; /* Message length in bits */ + uint32_t Length_Low; /* Message length in bits */ + + int_least16_t Message_Block_Index; /* Message_Block array index */ + /* 512-bit message blocks */ + uint8_t Message_Block[SHA256_Message_Block_Size]; + + int Computed; /* Is the hash computed? */ + int Corrupted; /* Cumulative corruption code */ +} SHA256Context; + +/* + * This structure will hold context information for the SHA-512 + * hashing operation. + */ +typedef struct SHA512Context { +#ifdef USE_32BIT_ONLY + uint32_t Intermediate_Hash[SHA512HashSize/4]; /* Message Digest */ + uint32_t Length[4]; /* Message length in bits */ +#else /* !USE_32BIT_ONLY */ + uint64_t Intermediate_Hash[SHA512HashSize/8]; /* Message Digest */ + uint64_t Length_High, Length_Low; /* Message length in bits */ +#endif /* USE_32BIT_ONLY */ + + int_least16_t Message_Block_Index; /* Message_Block array index */ + /* 1024-bit message blocks */ + uint8_t Message_Block[SHA512_Message_Block_Size]; + + int Computed; /* Is the hash computed?*/ + int Corrupted; /* Cumulative corruption code */ +} SHA512Context; + +/* + * This structure will hold context information for the SHA-224 + * hashing operation. It uses the SHA-256 structure for computation. + */ +typedef struct SHA256Context SHA224Context; + +/* + * This structure will hold context information for the SHA-384 + * hashing operation. It uses the SHA-512 structure for computation. + */ +typedef struct SHA512Context SHA384Context; + +/* + * This structure holds context information for all SHA + * hashing operations. + */ +typedef struct USHAContext { + int whichSha; /* which SHA is being used */ + union { + SHA1Context sha1Context; + SHA224Context sha224Context; SHA256Context sha256Context; + SHA384Context sha384Context; SHA512Context sha512Context; + } ctx; +} USHAContext; + +/* + * This structure will hold context information for the HMAC + * keyed-hashing operation. + */ +typedef struct HMACContext { + int whichSha; /* which SHA is being used */ + int hashSize; /* hash size of SHA being used */ + int blockSize; /* block size of SHA being used */ + USHAContext shaContext; /* SHA context */ + unsigned char k_opad[USHA_Max_Message_Block_Size]; + /* outer padding - key XORd with opad */ + int Computed; /* Is the MAC computed? */ + int Corrupted; /* Cumulative corruption code */ + +} HMACContext; + +/* + * This structure will hold context information for the HKDF + * extract-and-expand Key Derivation Functions. + */ +typedef struct HKDFContext { + int whichSha; /* which SHA is being used */ + HMACContext hmacContext; + int hashSize; /* hash size of SHA being used */ + unsigned char prk[USHAMaxHashSize]; + /* pseudo-random key - output of hkdfInput */ + int Computed; /* Is the key material computed? */ + int Corrupted; /* Cumulative corruption code */ +} HKDFContext; + +/* + * Function Prototypes + */ + +/* SHA-1 */ +extern int SHA1Reset(SHA1Context *); +extern int SHA1Input(SHA1Context *, const uint8_t *bytes, + unsigned int bytecount); +extern int SHA1FinalBits(SHA1Context *, uint8_t bits, + unsigned int bit_count); +extern int SHA1Result(SHA1Context *, + uint8_t Message_Digest[SHA1HashSize]); + +/* SHA-224 */ +extern int SHA224Reset(SHA224Context *); +extern int SHA224Input(SHA224Context *, const uint8_t *bytes, + unsigned int bytecount); +extern int SHA224FinalBits(SHA224Context *, uint8_t bits, + unsigned int bit_count); +extern int SHA224Result(SHA224Context *, + uint8_t Message_Digest[SHA224HashSize]); + +/* SHA-256 */ +extern int SHA256Reset(SHA256Context *); +extern int SHA256Input(SHA256Context *, const uint8_t *bytes, + unsigned int bytecount); +extern int SHA256FinalBits(SHA256Context *, uint8_t bits, + unsigned int bit_count); +extern int SHA256Result(SHA256Context *, + uint8_t Message_Digest[SHA256HashSize]); + +/* SHA-384 */ +extern int SHA384Reset(SHA384Context *); +extern int SHA384Input(SHA384Context *, const uint8_t *bytes, + unsigned int bytecount); +extern int SHA384FinalBits(SHA384Context *, uint8_t bits, + unsigned int bit_count); +extern int SHA384Result(SHA384Context *, + uint8_t Message_Digest[SHA384HashSize]); + +/* SHA-512 */ +extern int SHA512Reset(SHA512Context *); +extern int SHA512Input(SHA512Context *, const uint8_t *bytes, + unsigned int bytecount); +extern int SHA512FinalBits(SHA512Context *, uint8_t bits, + unsigned int bit_count); +extern int SHA512Result(SHA512Context *, + uint8_t Message_Digest[SHA512HashSize]); + +/* Unified SHA functions, chosen by whichSha */ +extern int USHAReset(USHAContext *context, SHAversion whichSha); +extern int USHAInput(USHAContext *context, + const uint8_t *bytes, unsigned int bytecount); +extern int USHAFinalBits(USHAContext *context, + uint8_t bits, unsigned int bit_count); +extern int USHAResult(USHAContext *context, + uint8_t Message_Digest[USHAMaxHashSize]); +extern int USHABlockSize(enum SHAversion whichSha); +extern int USHAHashSize(enum SHAversion whichSha); +extern int USHAHashSizeBits(enum SHAversion whichSha); +extern const char *USHAHashName(enum SHAversion whichSha); + +/* + * HMAC Keyed-Hashing for Message Authentication, RFC 2104, + * for all SHAs. + * This interface allows a fixed-length text input to be used. + */ +extern int hmac(SHAversion whichSha, /* which SHA algorithm to use */ + const unsigned char *text, /* pointer to data stream */ + int text_len, /* length of data stream */ + const unsigned char *key, /* pointer to authentication key */ + int key_len, /* length of authentication key */ + uint8_t digest[USHAMaxHashSize]); /* caller digest to fill in */ + +/* + * HMAC Keyed-Hashing for Message Authentication, RFC 2104, + * for all SHAs. + * This interface allows any length of text input to be used. + */ +extern int hmacReset(HMACContext *context, enum SHAversion whichSha, + const unsigned char *key, int key_len); +extern int hmacInput(HMACContext *context, const unsigned char *text, + int text_len); +extern int hmacFinalBits(HMACContext *context, uint8_t bits, + unsigned int bit_count); +extern int hmacResult(HMACContext *context, + uint8_t digest[USHAMaxHashSize]); + +/* + * HKDF HMAC-based Extract-and-Expand Key Derivation Function, + * RFC 5869, for all SHAs. + */ +extern int hkdf(SHAversion whichSha, const unsigned char *salt, + int salt_len, const unsigned char *ikm, int ikm_len, + const unsigned char *info, int info_len, + uint8_t okm[ ], int okm_len); +extern int hkdfExtract(SHAversion whichSha, const unsigned char *salt, + int salt_len, const unsigned char *ikm, + int ikm_len, uint8_t prk[USHAMaxHashSize]); +extern int hkdfExpand(SHAversion whichSha, const uint8_t prk[ ], + int prk_len, const unsigned char *info, + int info_len, uint8_t okm[ ], int okm_len); + +/* + * HKDF HMAC-based Extract-and-Expand Key Derivation Function, + * RFC 5869, for all SHAs. + * This interface allows any length of text input to be used. + */ +extern int hkdfReset(HKDFContext *context, enum SHAversion whichSha, + const unsigned char *salt, int salt_len); +extern int hkdfInput(HKDFContext *context, const unsigned char *ikm, + int ikm_len); +extern int hkdfFinalBits(HKDFContext *context, uint8_t ikm_bits, + unsigned int ikm_bit_count); +extern int hkdfResult(HKDFContext *context, + uint8_t prk[USHAMaxHashSize], + const unsigned char *info, int info_len, + uint8_t okm[USHAMaxHashSize], int okm_len); +#endif /* _SHA_H_ */ diff --git a/src/3rdparty/rfc6234/sha224-256.c b/src/3rdparty/rfc6234/sha224-256.c new file mode 100644 index 0000000000..9546540ea5 --- /dev/null +++ b/src/3rdparty/rfc6234/sha224-256.c @@ -0,0 +1,583 @@ +/************************* sha224-256.c ************************/ +/***************** See RFC 6234 for details. *******************/ +/* Copyright (c) 2011 IETF Trust and the persons identified as */ +/* authors of the code. All rights reserved. */ +/* See sha.h for terms of use and redistribution. */ + +/* + * Description: + * This file implements the Secure Hash Algorithms SHA-224 and + * SHA-256 as defined in the U.S. National Institute of Standards + * and Technology Federal Information Processing Standards + * Publication (FIPS PUB) 180-3 published in October 2008 + * and formerly defined in its predecessors, FIPS PUB 180-1 + * and FIP PUB 180-2. + * + * A combined document showing all algorithms is available at + * http://csrc.nist.gov/publications/fips/ + * fips180-3/fips180-3_final.pdf + * + * The SHA-224 and SHA-256 algorithms produce 224-bit and 256-bit + * message digests for a given data stream. It should take about + * 2**n steps to find a message with the same digest as a given + * message and 2**(n/2) to find any two messages with the same + * digest, when n is the digest size in bits. Therefore, this + * algorithm can serve as a means of providing a + * "fingerprint" for a message. + * + * Portability Issues: + * SHA-224 and SHA-256 are defined in terms of 32-bit "words". + * This code uses (included via "sha.h") to define 32- + * and 8-bit unsigned integer types. If your C compiler does not + * support 32-bit unsigned integers, this code is not + * appropriate. + * + * Caveats: + * SHA-224 and SHA-256 are designed to work with messages less + * than 2^64 bits long. This implementation uses SHA224/256Input() + * to hash the bits that are a multiple of the size of an 8-bit + * octet, and then optionally uses SHA224/256FinalBits() + * to hash the final few bits of the input. + */ + +#include "sha.h" +#include "sha-private.h" + +/* Define the SHA shift, rotate left, and rotate right macros */ +#define SHA256_SHR(bits,word) ((word) >> (bits)) +#define SHA256_ROTL(bits,word) \ + (((word) << (bits)) | ((word) >> (32-(bits)))) +#define SHA256_ROTR(bits,word) \ + (((word) >> (bits)) | ((word) << (32-(bits)))) + +/* Define the SHA SIGMA and sigma macros */ +#define SHA256_SIGMA0(word) \ + (SHA256_ROTR( 2,word) ^ SHA256_ROTR(13,word) ^ SHA256_ROTR(22,word)) +#define SHA256_SIGMA1(word) \ + (SHA256_ROTR( 6,word) ^ SHA256_ROTR(11,word) ^ SHA256_ROTR(25,word)) +#define SHA256_sigma0(word) \ + (SHA256_ROTR( 7,word) ^ SHA256_ROTR(18,word) ^ SHA256_SHR( 3,word)) +#define SHA256_sigma1(word) \ + (SHA256_ROTR(17,word) ^ SHA256_ROTR(19,word) ^ SHA256_SHR(10,word)) + +/* + * Add "length" to the length. + * Set Corrupted when overflow has occurred. + */ +/* addTemp commented out by Nokia, static variables are not thread-safe */ +/* static uint32_t addTemp; */ +/* 'M' appended to Macro name by Nokia */ +#define SHA224_256AddLengthM(context, length) \ + (addTemp = (context)->Length_Low, (context)->Corrupted = \ + (((context)->Length_Low += (length)) < addTemp) && \ + (++(context)->Length_High == 0) ? shaInputTooLong : \ + (context)->Corrupted ) + +/* Local Function Prototypes */ +static int SHA224_256Reset(SHA256Context *context, uint32_t *H0); +static void SHA224_256ProcessMessageBlock(SHA256Context *context); +static void SHA224_256Finalize(SHA256Context *context, + uint8_t Pad_Byte); +static void SHA224_256PadMessage(SHA256Context *context, + uint8_t Pad_Byte); +static int SHA224_256ResultN(SHA256Context *context, + uint8_t Message_Digest[ ], int HashSize); + +/* Initial Hash Values: FIPS 180-3 section 5.3.2 */ +static uint32_t SHA224_H0[SHA256HashSize/4] = { + 0xC1059ED8, 0x367CD507, 0x3070DD17, 0xF70E5939, + 0xFFC00B31, 0x68581511, 0x64F98FA7, 0xBEFA4FA4 +}; + +/* Initial Hash Values: FIPS 180-3 section 5.3.3 */ +static uint32_t SHA256_H0[SHA256HashSize/4] = { + 0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A, + 0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19 +}; + +/* + * SHA224Reset + * + * Description: + * This function will initialize the SHA224Context in preparation + * for computing a new SHA224 message digest. + * + * Parameters: + * context: [in/out] + * The context to reset. + * + * Returns: + * sha Error Code. + */ +int SHA224Reset(SHA224Context *context) +{ + return SHA224_256Reset(context, SHA224_H0); +} + +/* + * SHA224Input + * + * Description: + * This function accepts an array of octets as the next portion + * of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update. + * message_array[ ]: [in] + * An array of octets representing the next portion of + * the message. + * length: [in] + * The length of the message in message_array. + * + * Returns: + * sha Error Code. + * + */ +int SHA224Input(SHA224Context *context, const uint8_t *message_array, + unsigned int length) +{ + return SHA256Input(context, message_array, length); +} + +/* + * SHA224FinalBits + * + * Description: + * This function will add in any final bits of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update. + * message_bits: [in] + * The final bits of the message, in the upper portion of the + * byte. (Use 0b###00000 instead of 0b00000### to input the + * three bits ###.) + * length: [in] + * The number of bits in message_bits, between 1 and 7. + * + * Returns: + * sha Error Code. + */ +int SHA224FinalBits(SHA224Context *context, + uint8_t message_bits, unsigned int length) +{ + return SHA256FinalBits(context, message_bits, length); +} + +/* + * SHA224Result + * + * Description: + * This function will return the 224-bit message digest + * into the Message_Digest array provided by the caller. + * NOTE: + * The first octet of hash is stored in the element with index 0, + * the last octet of hash in the element with index 27. + * + * Parameters: + * context: [in/out] + * The context to use to calculate the SHA hash. + * Message_Digest[ ]: [out] + * Where the digest is returned. + * + * Returns: + * sha Error Code. + */ +int SHA224Result(SHA224Context *context, + uint8_t Message_Digest[SHA224HashSize]) +{ + return SHA224_256ResultN(context, Message_Digest, SHA224HashSize); +} + +/* + * SHA256Reset + * + * Description: + * This function will initialize the SHA256Context in preparation + * for computing a new SHA256 message digest. + * + * Parameters: + * context: [in/out] + * The context to reset. + * + * Returns: + * sha Error Code. + */ +int SHA256Reset(SHA256Context *context) +{ + return SHA224_256Reset(context, SHA256_H0); +} + +/* + * SHA256Input + * + * Description: + * This function accepts an array of octets as the next portion + * of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update. + * message_array[ ]: [in] + * An array of octets representing the next portion of + * the message. + * length: [in] + * The length of the message in message_array. + * + * Returns: + * sha Error Code. + */ +int SHA256Input(SHA256Context *context, const uint8_t *message_array, + unsigned int length) +{ + if (!context) return shaNull; + if (!length) return shaSuccess; + if (!message_array) return shaNull; + if (context->Computed) return context->Corrupted = shaStateError; + if (context->Corrupted) return context->Corrupted; + + while (length--) { + context->Message_Block[context->Message_Block_Index++] = + *message_array; + + if ((SHA224_256AddLength(context, 8) == shaSuccess) && + (context->Message_Block_Index == SHA256_Message_Block_Size)) + SHA224_256ProcessMessageBlock(context); + + message_array++; + } + + return context->Corrupted; + +} + +/* + * SHA256FinalBits + * + * Description: + * This function will add in any final bits of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update. + * message_bits: [in] + * The final bits of the message, in the upper portion of the + * byte. (Use 0b###00000 instead of 0b00000### to input the + * three bits ###.) + * length: [in] + * The number of bits in message_bits, between 1 and 7. + * + * Returns: + * sha Error Code. + */ +int SHA256FinalBits(SHA256Context *context, + uint8_t message_bits, unsigned int length) +{ + static uint8_t masks[8] = { + /* 0 0b00000000 */ 0x00, /* 1 0b10000000 */ 0x80, + /* 2 0b11000000 */ 0xC0, /* 3 0b11100000 */ 0xE0, + /* 4 0b11110000 */ 0xF0, /* 5 0b11111000 */ 0xF8, + /* 6 0b11111100 */ 0xFC, /* 7 0b11111110 */ 0xFE + }; + static uint8_t markbit[8] = { + /* 0 0b10000000 */ 0x80, /* 1 0b01000000 */ 0x40, + /* 2 0b00100000 */ 0x20, /* 3 0b00010000 */ 0x10, + /* 4 0b00001000 */ 0x08, /* 5 0b00000100 */ 0x04, + /* 6 0b00000010 */ 0x02, /* 7 0b00000001 */ 0x01 + }; + + if (!context) return shaNull; + if (!length) return shaSuccess; + if (context->Corrupted) return context->Corrupted; + if (context->Computed) return context->Corrupted = shaStateError; + if (length >= 8) return context->Corrupted = shaBadParam; + + SHA224_256AddLength(context, length); + SHA224_256Finalize(context, (uint8_t) + ((message_bits & masks[length]) | markbit[length])); + + return context->Corrupted; +} + +/* + * SHA256Result + * + * Description: + * This function will return the 256-bit message digest + * into the Message_Digest array provided by the caller. + * NOTE: + * The first octet of hash is stored in the element with index 0, + * the last octet of hash in the element with index 31. + * + * Parameters: + * context: [in/out] + * The context to use to calculate the SHA hash. + * Message_Digest[ ]: [out] + * Where the digest is returned. + * + * Returns: + * sha Error Code. + */ +int SHA256Result(SHA256Context *context, + uint8_t Message_Digest[SHA256HashSize]) +{ + return SHA224_256ResultN(context, Message_Digest, SHA256HashSize); +} + +/* + * SHA224_256Reset + * + * Description: + * This helper function will initialize the SHA256Context in + * preparation for computing a new SHA-224 or SHA-256 message digest. + * + * Parameters: + * context: [in/out] + * The context to reset. + * H0[ ]: [in] + * The initial hash value array to use. + * + * Returns: + * sha Error Code. + */ +static int SHA224_256Reset(SHA256Context *context, uint32_t *H0) +{ + if (!context) return shaNull; + + context->Length_High = context->Length_Low = 0; + context->Message_Block_Index = 0; + + context->Intermediate_Hash[0] = H0[0]; + context->Intermediate_Hash[1] = H0[1]; + context->Intermediate_Hash[2] = H0[2]; + context->Intermediate_Hash[3] = H0[3]; + context->Intermediate_Hash[4] = H0[4]; + context->Intermediate_Hash[5] = H0[5]; + context->Intermediate_Hash[6] = H0[6]; + context->Intermediate_Hash[7] = H0[7]; + + context->Computed = 0; + context->Corrupted = shaSuccess; + + return shaSuccess; +} + +/* + * SHA224_256ProcessMessageBlock + * + * Description: + * This helper function will process the next 512 bits of the + * message stored in the Message_Block array. + * + * Parameters: + * context: [in/out] + * The SHA context to update. + * + * Returns: + * Nothing. + * + * Comments: + * Many of the variable names in this code, especially the + * single character names, were used because those were the + * names used in the Secure Hash Standard. + */ +static void SHA224_256ProcessMessageBlock(SHA256Context *context) +{ + /* Constants defined in FIPS 180-3, section 4.2.2 */ + static const uint32_t K[64] = { + 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, + 0x59f111f1, 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, + 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, + 0xc19bf174, 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, + 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, 0x983e5152, + 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, + 0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, + 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, + 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, + 0xd6990624, 0xf40e3585, 0x106aa070, 0x19a4c116, 0x1e376c08, + 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, + 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, + 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 + }; + int t, t4; /* Loop counter */ + uint32_t temp1, temp2; /* Temporary word value */ + uint32_t W[64]; /* Word sequence */ + uint32_t A, B, C, D, E, F, G, H; /* Word buffers */ + + /* + * Initialize the first 16 words in the array W + */ + for (t = t4 = 0; t < 16; t++, t4 += 4) + W[t] = (((uint32_t)context->Message_Block[t4]) << 24) | + (((uint32_t)context->Message_Block[t4 + 1]) << 16) | + (((uint32_t)context->Message_Block[t4 + 2]) << 8) | + (((uint32_t)context->Message_Block[t4 + 3])); + + for (t = 16; t < 64; t++) + W[t] = SHA256_sigma1(W[t-2]) + W[t-7] + + SHA256_sigma0(W[t-15]) + W[t-16]; + + A = context->Intermediate_Hash[0]; + B = context->Intermediate_Hash[1]; + C = context->Intermediate_Hash[2]; + D = context->Intermediate_Hash[3]; + E = context->Intermediate_Hash[4]; + F = context->Intermediate_Hash[5]; + G = context->Intermediate_Hash[6]; + H = context->Intermediate_Hash[7]; + + for (t = 0; t < 64; t++) { + temp1 = H + SHA256_SIGMA1(E) + SHA_Ch(E,F,G) + K[t] + W[t]; + temp2 = SHA256_SIGMA0(A) + SHA_Maj(A,B,C); + H = G; + G = F; + F = E; + E = D + temp1; + D = C; + C = B; + B = A; + A = temp1 + temp2; + } + + context->Intermediate_Hash[0] += A; + context->Intermediate_Hash[1] += B; + context->Intermediate_Hash[2] += C; + context->Intermediate_Hash[3] += D; + context->Intermediate_Hash[4] += E; + context->Intermediate_Hash[5] += F; + context->Intermediate_Hash[6] += G; + context->Intermediate_Hash[7] += H; + + context->Message_Block_Index = 0; +} + +/* + * SHA224_256Finalize + * + * Description: + * This helper function finishes off the digest calculations. + * + * Parameters: + * context: [in/out] + * The SHA context to update. + * Pad_Byte: [in] + * The last byte to add to the message block before the 0-padding + * and length. This will contain the last bits of the message + * followed by another single bit. If the message was an + * exact multiple of 8-bits long, Pad_Byte will be 0x80. + * + * Returns: + * sha Error Code. + */ +static void SHA224_256Finalize(SHA256Context *context, + uint8_t Pad_Byte) +{ + int i; + SHA224_256PadMessage(context, Pad_Byte); + /* message may be sensitive, so clear it out */ + for (i = 0; i < SHA256_Message_Block_Size; ++i) + context->Message_Block[i] = 0; + context->Length_High = 0; /* and clear length */ + context->Length_Low = 0; + context->Computed = 1; +} + +/* + * SHA224_256PadMessage + * + * Description: + * According to the standard, the message must be padded to the next + * even multiple of 512 bits. The first padding bit must be a '1'. + * The last 64 bits represent the length of the original message. + * All bits in between should be 0. This helper function will pad + * the message according to those rules by filling the + * Message_Block array accordingly. When it returns, it can be + * assumed that the message digest has been computed. + * + * Parameters: + * context: [in/out] + * The context to pad. + * Pad_Byte: [in] + * The last byte to add to the message block before the 0-padding + * and length. This will contain the last bits of the message + * followed by another single bit. If the message was an + * exact multiple of 8-bits long, Pad_Byte will be 0x80. + * + * Returns: + * Nothing. + */ +static void SHA224_256PadMessage(SHA256Context *context, + uint8_t Pad_Byte) +{ + /* + * Check to see if the current message block is too small to hold + * the initial padding bits and length. If so, we will pad the + * block, process it, and then continue padding into a second + * block. + */ + if (context->Message_Block_Index >= (SHA256_Message_Block_Size-8)) { + context->Message_Block[context->Message_Block_Index++] = Pad_Byte; + while (context->Message_Block_Index < SHA256_Message_Block_Size) + context->Message_Block[context->Message_Block_Index++] = 0; + SHA224_256ProcessMessageBlock(context); + } else + context->Message_Block[context->Message_Block_Index++] = Pad_Byte; + + while (context->Message_Block_Index < (SHA256_Message_Block_Size-8)) + context->Message_Block[context->Message_Block_Index++] = 0; + + /* + * Store the message length as the last 8 octets + */ + context->Message_Block[56] = (uint8_t)(context->Length_High >> 24); + context->Message_Block[57] = (uint8_t)(context->Length_High >> 16); + context->Message_Block[58] = (uint8_t)(context->Length_High >> 8); + context->Message_Block[59] = (uint8_t)(context->Length_High); + context->Message_Block[60] = (uint8_t)(context->Length_Low >> 24); + context->Message_Block[61] = (uint8_t)(context->Length_Low >> 16); + context->Message_Block[62] = (uint8_t)(context->Length_Low >> 8); + context->Message_Block[63] = (uint8_t)(context->Length_Low); + + SHA224_256ProcessMessageBlock(context); +} + +/* + * SHA224_256ResultN + * + * Description: + * This helper function will return the 224-bit or 256-bit message + * digest into the Message_Digest array provided by the caller. + * NOTE: + * The first octet of hash is stored in the element with index 0, + * the last octet of hash in the element with index 27/31. + * + * Parameters: + * context: [in/out] + * The context to use to calculate the SHA hash. + * Message_Digest[ ]: [out] + * Where the digest is returned. + * HashSize: [in] + * The size of the hash, either 28 or 32. + * + * Returns: + * sha Error Code. + */ +static int SHA224_256ResultN(SHA256Context *context, + uint8_t Message_Digest[ ], int HashSize) +{ + int i; + + if (!context) return shaNull; + if (!Message_Digest) return shaNull; + if (context->Corrupted) return context->Corrupted; + + if (!context->Computed) + SHA224_256Finalize(context, 0x80); + + for (i = 0; i < HashSize; ++i) + Message_Digest[i] = (uint8_t) + (context->Intermediate_Hash[i>>2] >> 8 * ( 3 - ( i & 0x03 ) )); + + return shaSuccess; +} diff --git a/src/3rdparty/rfc6234/sha384-512.c b/src/3rdparty/rfc6234/sha384-512.c new file mode 100644 index 0000000000..7d9ba3fa52 --- /dev/null +++ b/src/3rdparty/rfc6234/sha384-512.c @@ -0,0 +1,1034 @@ +/************************* sha384-512.c ************************/ +/***************** See RFC 6234 for details. *******************/ +/* Copyright (c) 2011 IETF Trust and the persons identified as */ +/* authors of the code. All rights reserved. */ +/* See sha.h for terms of use and redistribution. */ + +/* + * Description: + * This file implements the Secure Hash Algorithms SHA-384 and + * SHA-512 as defined in the U.S. National Institute of Standards + * and Technology Federal Information Processing Standards + * Publication (FIPS PUB) 180-3 published in October 2008 + * and formerly defined in its predecessors, FIPS PUB 180-1 + * and FIP PUB 180-2. + * + * A combined document showing all algorithms is available at + * http://csrc.nist.gov/publications/fips/ + * fips180-3/fips180-3_final.pdf + * + * The SHA-384 and SHA-512 algorithms produce 384-bit and 512-bit + * message digests for a given data stream. It should take about + * 2**n steps to find a message with the same digest as a given + * message and 2**(n/2) to find any two messages with the same + * digest, when n is the digest size in bits. Therefore, this + * algorithm can serve as a means of providing a + * "fingerprint" for a message. + * + * Portability Issues: + * SHA-384 and SHA-512 are defined in terms of 64-bit "words", + * but if USE_32BIT_ONLY is #defined, this code is implemented in + * terms of 32-bit "words". This code uses (included + * via "sha.h") to define the 64-, 32- and 8-bit unsigned integer + * types. If your C compiler does not support 64-bit unsigned + * integers and you do not #define USE_32BIT_ONLY, this code is + * not appropriate. + * + * Caveats: + * SHA-384 and SHA-512 are designed to work with messages less + * than 2^128 bits long. This implementation uses SHA384/512Input() + * to hash the bits that are a multiple of the size of an 8-bit + * octet, and then optionally uses SHA384/256FinalBits() + * to hash the final few bits of the input. + * + */ + +#include "sha.h" + +#ifdef USE_32BIT_ONLY +/* + * Define 64-bit arithmetic in terms of 32-bit arithmetic. + * Each 64-bit number is represented in a 2-word array. + * All macros are defined such that the result is the last parameter. + */ + +/* + * Define shift, rotate left, and rotate right functions + */ +#define SHA512_SHR(bits, word, ret) ( \ + /* (((uint64_t)((word))) >> (bits)) */ \ + (ret)[0] = (((bits) < 32) && ((bits) >= 0)) ? \ + ((word)[0] >> (bits)) : 0, \ + (ret)[1] = ((bits) > 32) ? ((word)[0] >> ((bits) - 32)) : \ + ((bits) == 32) ? (word)[0] : \ + ((bits) >= 0) ? \ + (((word)[0] << (32 - (bits))) | \ + ((word)[1] >> (bits))) : 0 ) + +#define SHA512_SHL(bits, word, ret) ( \ + /* (((uint64_t)(word)) << (bits)) */ \ + (ret)[0] = ((bits) > 32) ? ((word)[1] << ((bits) - 32)) : \ + ((bits) == 32) ? (word)[1] : \ + ((bits) >= 0) ? \ + (((word)[0] << (bits)) | \ + ((word)[1] >> (32 - (bits)))) : \ + 0, \ + (ret)[1] = (((bits) < 32) && ((bits) >= 0)) ? \ + ((word)[1] << (bits)) : 0 ) + +/* + * Define 64-bit OR + */ +#define SHA512_OR(word1, word2, ret) ( \ + (ret)[0] = (word1)[0] | (word2)[0], \ + (ret)[1] = (word1)[1] | (word2)[1] ) + +/* + * Define 64-bit XOR + */ +#define SHA512_XOR(word1, word2, ret) ( \ + (ret)[0] = (word1)[0] ^ (word2)[0], \ + (ret)[1] = (word1)[1] ^ (word2)[1] ) + +/* + * Define 64-bit AND + */ +#define SHA512_AND(word1, word2, ret) ( \ + (ret)[0] = (word1)[0] & (word2)[0], \ + (ret)[1] = (word1)[1] & (word2)[1] ) + +/* + * Define 64-bit TILDA + */ +#define SHA512_TILDA(word, ret) \ + ( (ret)[0] = ~(word)[0], (ret)[1] = ~(word)[1] ) + +/* + * Define 64-bit ADD + */ +#define SHA512_ADD(word1, word2, ret) ( \ + (ret)[1] = (word1)[1], (ret)[1] += (word2)[1], \ + (ret)[0] = (word1)[0] + (word2)[0] + ((ret)[1] < (word1)[1]) ) + +/* + * Add the 4word value in word2 to word1. + */ +static uint32_t ADDTO4_temp, ADDTO4_temp2; +#define SHA512_ADDTO4(word1, word2) ( \ + ADDTO4_temp = (word1)[3], \ + (word1)[3] += (word2)[3], \ + ADDTO4_temp2 = (word1)[2], \ + (word1)[2] += (word2)[2] + ((word1)[3] < ADDTO4_temp), \ + ADDTO4_temp = (word1)[1], \ + (word1)[1] += (word2)[1] + ((word1)[2] < ADDTO4_temp2), \ + (word1)[0] += (word2)[0] + ((word1)[1] < ADDTO4_temp) ) + +/* + * Add the 2word value in word2 to word1. + */ +static uint32_t ADDTO2_temp; +#define SHA512_ADDTO2(word1, word2) ( \ + ADDTO2_temp = (word1)[1], \ + (word1)[1] += (word2)[1], \ + (word1)[0] += (word2)[0] + ((word1)[1] < ADDTO2_temp) ) + +/* + * SHA rotate ((word >> bits) | (word << (64-bits))) + */ +static uint32_t ROTR_temp1[2], ROTR_temp2[2]; +#define SHA512_ROTR(bits, word, ret) ( \ + SHA512_SHR((bits), (word), ROTR_temp1), \ + SHA512_SHL(64-(bits), (word), ROTR_temp2), \ + SHA512_OR(ROTR_temp1, ROTR_temp2, (ret)) ) + +/* + * Define the SHA SIGMA and sigma macros + * + * SHA512_ROTR(28,word) ^ SHA512_ROTR(34,word) ^ SHA512_ROTR(39,word) + */ +static uint32_t SIGMA0_temp1[2], SIGMA0_temp2[2], + SIGMA0_temp3[2], SIGMA0_temp4[2]; +#define SHA512_SIGMA0(word, ret) ( \ + SHA512_ROTR(28, (word), SIGMA0_temp1), \ + SHA512_ROTR(34, (word), SIGMA0_temp2), \ + SHA512_ROTR(39, (word), SIGMA0_temp3), \ + SHA512_XOR(SIGMA0_temp2, SIGMA0_temp3, SIGMA0_temp4), \ + SHA512_XOR(SIGMA0_temp1, SIGMA0_temp4, (ret)) ) + +/* + * SHA512_ROTR(14,word) ^ SHA512_ROTR(18,word) ^ SHA512_ROTR(41,word) + */ +static uint32_t SIGMA1_temp1[2], SIGMA1_temp2[2], + SIGMA1_temp3[2], SIGMA1_temp4[2]; +#define SHA512_SIGMA1(word, ret) ( \ + SHA512_ROTR(14, (word), SIGMA1_temp1), \ + SHA512_ROTR(18, (word), SIGMA1_temp2), \ + SHA512_ROTR(41, (word), SIGMA1_temp3), \ + SHA512_XOR(SIGMA1_temp2, SIGMA1_temp3, SIGMA1_temp4), \ + SHA512_XOR(SIGMA1_temp1, SIGMA1_temp4, (ret)) ) + +/* + * (SHA512_ROTR( 1,word) ^ SHA512_ROTR( 8,word) ^ SHA512_SHR( 7,word)) + */ +static uint32_t sigma0_temp1[2], sigma0_temp2[2], + sigma0_temp3[2], sigma0_temp4[2]; +#define SHA512_sigma0(word, ret) ( \ + SHA512_ROTR( 1, (word), sigma0_temp1), \ + SHA512_ROTR( 8, (word), sigma0_temp2), \ + SHA512_SHR( 7, (word), sigma0_temp3), \ + SHA512_XOR(sigma0_temp2, sigma0_temp3, sigma0_temp4), \ + SHA512_XOR(sigma0_temp1, sigma0_temp4, (ret)) ) + +/* + * (SHA512_ROTR(19,word) ^ SHA512_ROTR(61,word) ^ SHA512_SHR( 6,word)) + */ +static uint32_t sigma1_temp1[2], sigma1_temp2[2], + sigma1_temp3[2], sigma1_temp4[2]; +#define SHA512_sigma1(word, ret) ( \ + SHA512_ROTR(19, (word), sigma1_temp1), \ + SHA512_ROTR(61, (word), sigma1_temp2), \ + SHA512_SHR( 6, (word), sigma1_temp3), \ + SHA512_XOR(sigma1_temp2, sigma1_temp3, sigma1_temp4), \ + SHA512_XOR(sigma1_temp1, sigma1_temp4, (ret)) ) + +#ifndef USE_MODIFIED_MACROS +/* + * These definitions are the ones used in FIPS 180-3, section 4.1.3 + * Ch(x,y,z) ((x & y) ^ (~x & z)) + */ +static uint32_t Ch_temp1[2], Ch_temp2[2], Ch_temp3[2]; +#define SHA_Ch(x, y, z, ret) ( \ + SHA512_AND(x, y, Ch_temp1), \ + SHA512_TILDA(x, Ch_temp2), \ + SHA512_AND(Ch_temp2, z, Ch_temp3), \ + SHA512_XOR(Ch_temp1, Ch_temp3, (ret)) ) + +/* + * Maj(x,y,z) (((x)&(y)) ^ ((x)&(z)) ^ ((y)&(z))) + */ +static uint32_t Maj_temp1[2], Maj_temp2[2], + Maj_temp3[2], Maj_temp4[2]; +#define SHA_Maj(x, y, z, ret) ( \ + SHA512_AND(x, y, Maj_temp1), \ + SHA512_AND(x, z, Maj_temp2), \ + SHA512_AND(y, z, Maj_temp3), \ + SHA512_XOR(Maj_temp2, Maj_temp3, Maj_temp4), \ + SHA512_XOR(Maj_temp1, Maj_temp4, (ret)) ) +#else /* !USE_MODIFIED_MACROS */ +/* + * These definitions are potentially faster equivalents for the ones + * used in FIPS 180-3, section 4.1.3. + * ((x & y) ^ (~x & z)) becomes + * ((x & (y ^ z)) ^ z) + */ +#define SHA_Ch(x, y, z, ret) ( \ + (ret)[0] = (((x)[0] & ((y)[0] ^ (z)[0])) ^ (z)[0]), \ + (ret)[1] = (((x)[1] & ((y)[1] ^ (z)[1])) ^ (z)[1]) ) + +/* + * ((x & y) ^ (x & z) ^ (y & z)) becomes + * ((x & (y | z)) | (y & z)) + */ +#define SHA_Maj(x, y, z, ret) ( \ + ret[0] = (((x)[0] & ((y)[0] | (z)[0])) | ((y)[0] & (z)[0])), \ + ret[1] = (((x)[1] & ((y)[1] | (z)[1])) | ((y)[1] & (z)[1])) ) +#endif /* USE_MODIFIED_MACROS */ + +/* + * Add "length" to the length. + * Set Corrupted when overflow has occurred. + */ +static uint32_t addTemp[4] = { 0, 0, 0, 0 }; +#define SHA384_512AddLength(context, length) ( \ + addTemp[3] = (length), SHA512_ADDTO4((context)->Length, addTemp), \ + (context)->Corrupted = (((context)->Length[3] < (length)) && \ + ((context)->Length[2] == 0) && ((context)->Length[1] == 0) && \ + ((context)->Length[0] == 0)) ? shaInputTooLong : \ + (context)->Corrupted ) + +/* Local Function Prototypes */ +static int SHA384_512Reset(SHA512Context *context, + uint32_t H0[SHA512HashSize/4]); +static void SHA384_512ProcessMessageBlock(SHA512Context *context); +static void SHA384_512Finalize(SHA512Context *context, + uint8_t Pad_Byte); +static void SHA384_512PadMessage(SHA512Context *context, + uint8_t Pad_Byte); +static int SHA384_512ResultN( SHA512Context *context, + uint8_t Message_Digest[ ], int HashSize); + +/* Initial Hash Values: FIPS 180-3 sections 5.3.4 and 5.3.5 */ +static uint32_t SHA384_H0[SHA512HashSize/4] = { + 0xCBBB9D5D, 0xC1059ED8, 0x629A292A, 0x367CD507, 0x9159015A, + 0x3070DD17, 0x152FECD8, 0xF70E5939, 0x67332667, 0xFFC00B31, + 0x8EB44A87, 0x68581511, 0xDB0C2E0D, 0x64F98FA7, 0x47B5481D, + 0xBEFA4FA4 +}; +static uint32_t SHA512_H0[SHA512HashSize/4] = { + 0x6A09E667, 0xF3BCC908, 0xBB67AE85, 0x84CAA73B, 0x3C6EF372, + 0xFE94F82B, 0xA54FF53A, 0x5F1D36F1, 0x510E527F, 0xADE682D1, + 0x9B05688C, 0x2B3E6C1F, 0x1F83D9AB, 0xFB41BD6B, 0x5BE0CD19, + 0x137E2179 +}; + +#else /* !USE_32BIT_ONLY */ + +#include "sha-private.h" + +/* Define the SHA shift, rotate left and rotate right macros */ +#define SHA512_SHR(bits,word) (((uint64_t)(word)) >> (bits)) +#define SHA512_ROTR(bits,word) ((((uint64_t)(word)) >> (bits)) | \ + (((uint64_t)(word)) << (64-(bits)))) + +/* + * Define the SHA SIGMA and sigma macros + * + * SHA512_ROTR(28,word) ^ SHA512_ROTR(34,word) ^ SHA512_ROTR(39,word) + */ +#define SHA512_SIGMA0(word) \ + (SHA512_ROTR(28,word) ^ SHA512_ROTR(34,word) ^ SHA512_ROTR(39,word)) +#define SHA512_SIGMA1(word) \ + (SHA512_ROTR(14,word) ^ SHA512_ROTR(18,word) ^ SHA512_ROTR(41,word)) +#define SHA512_sigma0(word) \ + (SHA512_ROTR( 1,word) ^ SHA512_ROTR( 8,word) ^ SHA512_SHR( 7,word)) +#define SHA512_sigma1(word) \ + (SHA512_ROTR(19,word) ^ SHA512_ROTR(61,word) ^ SHA512_SHR( 6,word)) + +/* + * Add "length" to the length. + * Set Corrupted when overflow has occurred. + */ +/* addTemp commented out by Nokia, static variables are not thread-safe */ +/* static uint64_t addTemp; */ +/* 'M' appended to Macro name by Nokia */ +#define SHA384_512AddLengthM(context, length) \ + (addTemp = context->Length_Low, context->Corrupted = \ + ((context->Length_Low += length) < addTemp) && \ + (++context->Length_High == 0) ? shaInputTooLong : \ + (context)->Corrupted) + +/* Local Function Prototypes */ +static int SHA384_512Reset(SHA512Context *context, + uint64_t H0[SHA512HashSize/8]); +static void SHA384_512ProcessMessageBlock(SHA512Context *context); +static void SHA384_512Finalize(SHA512Context *context, + uint8_t Pad_Byte); +static void SHA384_512PadMessage(SHA512Context *context, + uint8_t Pad_Byte); +static int SHA384_512ResultN(SHA512Context *context, + uint8_t Message_Digest[ ], int HashSize); + +/* Initial Hash Values: FIPS 180-3 sections 5.3.4 and 5.3.5 */ +static uint64_t SHA384_H0[ ] = { + 0xCBBB9D5DC1059ED8ll, 0x629A292A367CD507ll, 0x9159015A3070DD17ll, + 0x152FECD8F70E5939ll, 0x67332667FFC00B31ll, 0x8EB44A8768581511ll, + 0xDB0C2E0D64F98FA7ll, 0x47B5481DBEFA4FA4ll +}; +static uint64_t SHA512_H0[ ] = { + 0x6A09E667F3BCC908ll, 0xBB67AE8584CAA73Bll, 0x3C6EF372FE94F82Bll, + 0xA54FF53A5F1D36F1ll, 0x510E527FADE682D1ll, 0x9B05688C2B3E6C1Fll, + 0x1F83D9ABFB41BD6Bll, 0x5BE0CD19137E2179ll +}; + +#endif /* USE_32BIT_ONLY */ + +/* + * SHA384Reset + * + * Description: + * This function will initialize the SHA384Context in preparation + * for computing a new SHA384 message digest. + * + * Parameters: + * context: [in/out] + * The context to reset. + * + * Returns: + * sha Error Code. + * + */ +int SHA384Reset(SHA384Context *context) +{ + return SHA384_512Reset(context, SHA384_H0); +} + +/* + * SHA384Input + * + * Description: + * This function accepts an array of octets as the next portion + * of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update. + * message_array[ ]: [in] + * An array of octets representing the next portion of + * the message. + * length: [in] + * The length of the message in message_array. + * + * Returns: + * sha Error Code. + * + */ +int SHA384Input(SHA384Context *context, + const uint8_t *message_array, unsigned int length) +{ + return SHA512Input(context, message_array, length); +} + +/* + * SHA384FinalBits + * + * Description: + * This function will add in any final bits of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update. + * message_bits: [in] + * The final bits of the message, in the upper portion of the + * byte. (Use 0b###00000 instead of 0b00000### to input the + * three bits ###.) + * length: [in] + * The number of bits in message_bits, between 1 and 7. + * + * Returns: + * sha Error Code. + * + */ +int SHA384FinalBits(SHA384Context *context, + uint8_t message_bits, unsigned int length) +{ + return SHA512FinalBits(context, message_bits, length); +} + +/* + * SHA384Result + * + * Description: + * This function will return the 384-bit message digest + * into the Message_Digest array provided by the caller. + * NOTE: + * The first octet of hash is stored in the element with index 0, + * the last octet of hash in the element with index 47. + * + * Parameters: + * context: [in/out] + * The context to use to calculate the SHA hash. + * Message_Digest[ ]: [out] + * Where the digest is returned. + * + * Returns: + * sha Error Code. + * + */ +int SHA384Result(SHA384Context *context, + uint8_t Message_Digest[SHA384HashSize]) +{ + return SHA384_512ResultN(context, Message_Digest, SHA384HashSize); +} + +/* + * SHA512Reset + * + * Description: + * This function will initialize the SHA512Context in preparation + * for computing a new SHA512 message digest. + * + * Parameters: + * context: [in/out] + * The context to reset. + * + * Returns: + * sha Error Code. + * + */ +int SHA512Reset(SHA512Context *context) +{ + return SHA384_512Reset(context, SHA512_H0); +} + +/* + * SHA512Input + * + * Description: + * This function accepts an array of octets as the next portion + * of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update. + * message_array[ ]: [in] + * An array of octets representing the next portion of + * the message. + * length: [in] + * The length of the message in message_array. + * + * Returns: + * sha Error Code. + * + */ +int SHA512Input(SHA512Context *context, + const uint8_t *message_array, + unsigned int length) +{ + if (!context) return shaNull; + if (!length) return shaSuccess; + if (!message_array) return shaNull; + if (context->Computed) return context->Corrupted = shaStateError; + if (context->Corrupted) return context->Corrupted; + + while (length--) { + context->Message_Block[context->Message_Block_Index++] = + *message_array; + + if ((SHA384_512AddLength(context, 8) == shaSuccess) && + (context->Message_Block_Index == SHA512_Message_Block_Size)) + SHA384_512ProcessMessageBlock(context); + + message_array++; + } + + return context->Corrupted; +} + +/* + * SHA512FinalBits + * + * Description: + * This function will add in any final bits of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update. + * message_bits: [in] + * The final bits of the message, in the upper portion of the + * byte. (Use 0b###00000 instead of 0b00000### to input the + * three bits ###.) + * length: [in] + * The number of bits in message_bits, between 1 and 7. + * + * Returns: + * sha Error Code. + * + */ +int SHA512FinalBits(SHA512Context *context, + uint8_t message_bits, unsigned int length) +{ + static uint8_t masks[8] = { + /* 0 0b00000000 */ 0x00, /* 1 0b10000000 */ 0x80, + /* 2 0b11000000 */ 0xC0, /* 3 0b11100000 */ 0xE0, + /* 4 0b11110000 */ 0xF0, /* 5 0b11111000 */ 0xF8, + /* 6 0b11111100 */ 0xFC, /* 7 0b11111110 */ 0xFE + }; + static uint8_t markbit[8] = { + /* 0 0b10000000 */ 0x80, /* 1 0b01000000 */ 0x40, + /* 2 0b00100000 */ 0x20, /* 3 0b00010000 */ 0x10, + /* 4 0b00001000 */ 0x08, /* 5 0b00000100 */ 0x04, + /* 6 0b00000010 */ 0x02, /* 7 0b00000001 */ 0x01 + }; + + if (!context) return shaNull; + if (!length) return shaSuccess; + if (context->Corrupted) return context->Corrupted; + if (context->Computed) return context->Corrupted = shaStateError; + if (length >= 8) return context->Corrupted = shaBadParam; + + SHA384_512AddLength(context, length); + SHA384_512Finalize(context, (uint8_t) + ((message_bits & masks[length]) | markbit[length])); + + return context->Corrupted; +} + +/* + * SHA512Result + * + * Description: + * This function will return the 512-bit message digest + * into the Message_Digest array provided by the caller. + * NOTE: + * The first octet of hash is stored in the element with index 0, + * the last octet of hash in the element with index 63. + * + * Parameters: + * context: [in/out] + * The context to use to calculate the SHA hash. + * Message_Digest[ ]: [out] + * Where the digest is returned. + * + * Returns: + * sha Error Code. + * + */ +int SHA512Result(SHA512Context *context, + uint8_t Message_Digest[SHA512HashSize]) +{ + return SHA384_512ResultN(context, Message_Digest, SHA512HashSize); +} + +/* + * SHA384_512Reset + * + * Description: + * This helper function will initialize the SHA512Context in + * preparation for computing a new SHA384 or SHA512 message + * digest. + * + * Parameters: + * context: [in/out] + * The context to reset. + * H0[ ]: [in] + * The initial hash value array to use. + * + * Returns: + * sha Error Code. + * + */ +#ifdef USE_32BIT_ONLY +static int SHA384_512Reset(SHA512Context *context, + uint32_t H0[SHA512HashSize/4]) +#else /* !USE_32BIT_ONLY */ +static int SHA384_512Reset(SHA512Context *context, + uint64_t H0[SHA512HashSize/8]) +#endif /* USE_32BIT_ONLY */ +{ + int i; + if (!context) return shaNull; + + context->Message_Block_Index = 0; + +#ifdef USE_32BIT_ONLY + context->Length[0] = context->Length[1] = + context->Length[2] = context->Length[3] = 0; + + for (i = 0; i < SHA512HashSize/4; i++) + context->Intermediate_Hash[i] = H0[i]; +#else /* !USE_32BIT_ONLY */ + context->Length_High = context->Length_Low = 0; + + for (i = 0; i < SHA512HashSize/8; i++) + context->Intermediate_Hash[i] = H0[i]; +#endif /* USE_32BIT_ONLY */ + + context->Computed = 0; + context->Corrupted = shaSuccess; + + return shaSuccess; +} + +/* + * SHA384_512ProcessMessageBlock + * + * Description: + * This helper function will process the next 1024 bits of the + * message stored in the Message_Block array. + * + * Parameters: + * context: [in/out] + * The SHA context to update. + * + * Returns: + * Nothing. + * + * Comments: + * Many of the variable names in this code, especially the + * single character names, were used because those were the + * names used in the Secure Hash Standard. + * + * + */ +static void SHA384_512ProcessMessageBlock(SHA512Context *context) +{ +#ifdef USE_32BIT_ONLY + /* Constants defined in FIPS 180-3, section 4.2.3 */ + static const uint32_t K[80*2] = { + 0x428A2F98, 0xD728AE22, 0x71374491, 0x23EF65CD, 0xB5C0FBCF, + 0xEC4D3B2F, 0xE9B5DBA5, 0x8189DBBC, 0x3956C25B, 0xF348B538, + 0x59F111F1, 0xB605D019, 0x923F82A4, 0xAF194F9B, 0xAB1C5ED5, + 0xDA6D8118, 0xD807AA98, 0xA3030242, 0x12835B01, 0x45706FBE, + 0x243185BE, 0x4EE4B28C, 0x550C7DC3, 0xD5FFB4E2, 0x72BE5D74, + 0xF27B896F, 0x80DEB1FE, 0x3B1696B1, 0x9BDC06A7, 0x25C71235, + 0xC19BF174, 0xCF692694, 0xE49B69C1, 0x9EF14AD2, 0xEFBE4786, + 0x384F25E3, 0x0FC19DC6, 0x8B8CD5B5, 0x240CA1CC, 0x77AC9C65, + 0x2DE92C6F, 0x592B0275, 0x4A7484AA, 0x6EA6E483, 0x5CB0A9DC, + 0xBD41FBD4, 0x76F988DA, 0x831153B5, 0x983E5152, 0xEE66DFAB, + 0xA831C66D, 0x2DB43210, 0xB00327C8, 0x98FB213F, 0xBF597FC7, + 0xBEEF0EE4, 0xC6E00BF3, 0x3DA88FC2, 0xD5A79147, 0x930AA725, + 0x06CA6351, 0xE003826F, 0x14292967, 0x0A0E6E70, 0x27B70A85, + 0x46D22FFC, 0x2E1B2138, 0x5C26C926, 0x4D2C6DFC, 0x5AC42AED, + 0x53380D13, 0x9D95B3DF, 0x650A7354, 0x8BAF63DE, 0x766A0ABB, + 0x3C77B2A8, 0x81C2C92E, 0x47EDAEE6, 0x92722C85, 0x1482353B, + 0xA2BFE8A1, 0x4CF10364, 0xA81A664B, 0xBC423001, 0xC24B8B70, + 0xD0F89791, 0xC76C51A3, 0x0654BE30, 0xD192E819, 0xD6EF5218, + 0xD6990624, 0x5565A910, 0xF40E3585, 0x5771202A, 0x106AA070, + 0x32BBD1B8, 0x19A4C116, 0xB8D2D0C8, 0x1E376C08, 0x5141AB53, + 0x2748774C, 0xDF8EEB99, 0x34B0BCB5, 0xE19B48A8, 0x391C0CB3, + 0xC5C95A63, 0x4ED8AA4A, 0xE3418ACB, 0x5B9CCA4F, 0x7763E373, + 0x682E6FF3, 0xD6B2B8A3, 0x748F82EE, 0x5DEFB2FC, 0x78A5636F, + 0x43172F60, 0x84C87814, 0xA1F0AB72, 0x8CC70208, 0x1A6439EC, + 0x90BEFFFA, 0x23631E28, 0xA4506CEB, 0xDE82BDE9, 0xBEF9A3F7, + 0xB2C67915, 0xC67178F2, 0xE372532B, 0xCA273ECE, 0xEA26619C, + 0xD186B8C7, 0x21C0C207, 0xEADA7DD6, 0xCDE0EB1E, 0xF57D4F7F, + 0xEE6ED178, 0x06F067AA, 0x72176FBA, 0x0A637DC5, 0xA2C898A6, + 0x113F9804, 0xBEF90DAE, 0x1B710B35, 0x131C471B, 0x28DB77F5, + 0x23047D84, 0x32CAAB7B, 0x40C72493, 0x3C9EBE0A, 0x15C9BEBC, + 0x431D67C4, 0x9C100D4C, 0x4CC5D4BE, 0xCB3E42B6, 0x597F299C, + 0xFC657E2A, 0x5FCB6FAB, 0x3AD6FAEC, 0x6C44198C, 0x4A475817 + }; + int t, t2, t8; /* Loop counter */ + uint32_t temp1[2], temp2[2], /* Temporary word values */ + temp3[2], temp4[2], temp5[2]; + uint32_t W[2*80]; /* Word sequence */ + uint32_t A[2], B[2], C[2], D[2], /* Word buffers */ + E[2], F[2], G[2], H[2]; + + /* Initialize the first 16 words in the array W */ + for (t = t2 = t8 = 0; t < 16; t++, t8 += 8) { + W[t2++] = ((((uint32_t)context->Message_Block[t8 ])) << 24) | + ((((uint32_t)context->Message_Block[t8 + 1])) << 16) | + ((((uint32_t)context->Message_Block[t8 + 2])) << 8) | + ((((uint32_t)context->Message_Block[t8 + 3]))); + W[t2++] = ((((uint32_t)context->Message_Block[t8 + 4])) << 24) | + ((((uint32_t)context->Message_Block[t8 + 5])) << 16) | + ((((uint32_t)context->Message_Block[t8 + 6])) << 8) | + ((((uint32_t)context->Message_Block[t8 + 7]))); + } + + for (t = 16; t < 80; t++, t2 += 2) { + /* W[t] = SHA512_sigma1(W[t-2]) + W[t-7] + + SHA512_sigma0(W[t-15]) + W[t-16]; */ + uint32_t *Wt2 = &W[t2-2*2]; + uint32_t *Wt7 = &W[t2-7*2]; + uint32_t *Wt15 = &W[t2-15*2]; + uint32_t *Wt16 = &W[t2-16*2]; + SHA512_sigma1(Wt2, temp1); + SHA512_ADD(temp1, Wt7, temp2); + SHA512_sigma0(Wt15, temp1); + SHA512_ADD(temp1, Wt16, temp3); + SHA512_ADD(temp2, temp3, &W[t2]); + } + + A[0] = context->Intermediate_Hash[0]; + A[1] = context->Intermediate_Hash[1]; + B[0] = context->Intermediate_Hash[2]; + B[1] = context->Intermediate_Hash[3]; + C[0] = context->Intermediate_Hash[4]; + C[1] = context->Intermediate_Hash[5]; + D[0] = context->Intermediate_Hash[6]; + D[1] = context->Intermediate_Hash[7]; + E[0] = context->Intermediate_Hash[8]; + E[1] = context->Intermediate_Hash[9]; + F[0] = context->Intermediate_Hash[10]; + F[1] = context->Intermediate_Hash[11]; + G[0] = context->Intermediate_Hash[12]; + G[1] = context->Intermediate_Hash[13]; + H[0] = context->Intermediate_Hash[14]; + H[1] = context->Intermediate_Hash[15]; + + for (t = t2 = 0; t < 80; t++, t2 += 2) { + /* + * temp1 = H + SHA512_SIGMA1(E) + SHA_Ch(E,F,G) + K[t] + W[t]; + */ + SHA512_SIGMA1(E,temp1); + SHA512_ADD(H, temp1, temp2); + SHA_Ch(E,F,G,temp3); + SHA512_ADD(temp2, temp3, temp4); + SHA512_ADD(&K[t2], &W[t2], temp5); + SHA512_ADD(temp4, temp5, temp1); + /* + * temp2 = SHA512_SIGMA0(A) + SHA_Maj(A,B,C); + */ + SHA512_SIGMA0(A,temp3); + SHA_Maj(A,B,C,temp4); + SHA512_ADD(temp3, temp4, temp2); + H[0] = G[0]; H[1] = G[1]; + G[0] = F[0]; G[1] = F[1]; + F[0] = E[0]; F[1] = E[1]; + SHA512_ADD(D, temp1, E); + D[0] = C[0]; D[1] = C[1]; + C[0] = B[0]; C[1] = B[1]; + B[0] = A[0]; B[1] = A[1]; + SHA512_ADD(temp1, temp2, A); + } + + SHA512_ADDTO2(&context->Intermediate_Hash[0], A); + SHA512_ADDTO2(&context->Intermediate_Hash[2], B); + SHA512_ADDTO2(&context->Intermediate_Hash[4], C); + SHA512_ADDTO2(&context->Intermediate_Hash[6], D); + SHA512_ADDTO2(&context->Intermediate_Hash[8], E); + SHA512_ADDTO2(&context->Intermediate_Hash[10], F); + SHA512_ADDTO2(&context->Intermediate_Hash[12], G); + SHA512_ADDTO2(&context->Intermediate_Hash[14], H); + +#else /* !USE_32BIT_ONLY */ + /* Constants defined in FIPS 180-3, section 4.2.3 */ + static const uint64_t K[80] = { + 0x428A2F98D728AE22ll, 0x7137449123EF65CDll, 0xB5C0FBCFEC4D3B2Fll, + 0xE9B5DBA58189DBBCll, 0x3956C25BF348B538ll, 0x59F111F1B605D019ll, + 0x923F82A4AF194F9Bll, 0xAB1C5ED5DA6D8118ll, 0xD807AA98A3030242ll, + 0x12835B0145706FBEll, 0x243185BE4EE4B28Cll, 0x550C7DC3D5FFB4E2ll, + 0x72BE5D74F27B896Fll, 0x80DEB1FE3B1696B1ll, 0x9BDC06A725C71235ll, + 0xC19BF174CF692694ll, 0xE49B69C19EF14AD2ll, 0xEFBE4786384F25E3ll, + 0x0FC19DC68B8CD5B5ll, 0x240CA1CC77AC9C65ll, 0x2DE92C6F592B0275ll, + 0x4A7484AA6EA6E483ll, 0x5CB0A9DCBD41FBD4ll, 0x76F988DA831153B5ll, + 0x983E5152EE66DFABll, 0xA831C66D2DB43210ll, 0xB00327C898FB213Fll, + 0xBF597FC7BEEF0EE4ll, 0xC6E00BF33DA88FC2ll, 0xD5A79147930AA725ll, + 0x06CA6351E003826Fll, 0x142929670A0E6E70ll, 0x27B70A8546D22FFCll, + 0x2E1B21385C26C926ll, 0x4D2C6DFC5AC42AEDll, 0x53380D139D95B3DFll, + 0x650A73548BAF63DEll, 0x766A0ABB3C77B2A8ll, 0x81C2C92E47EDAEE6ll, + 0x92722C851482353Bll, 0xA2BFE8A14CF10364ll, 0xA81A664BBC423001ll, + 0xC24B8B70D0F89791ll, 0xC76C51A30654BE30ll, 0xD192E819D6EF5218ll, + 0xD69906245565A910ll, 0xF40E35855771202All, 0x106AA07032BBD1B8ll, + 0x19A4C116B8D2D0C8ll, 0x1E376C085141AB53ll, 0x2748774CDF8EEB99ll, + 0x34B0BCB5E19B48A8ll, 0x391C0CB3C5C95A63ll, 0x4ED8AA4AE3418ACBll, + 0x5B9CCA4F7763E373ll, 0x682E6FF3D6B2B8A3ll, 0x748F82EE5DEFB2FCll, + 0x78A5636F43172F60ll, 0x84C87814A1F0AB72ll, 0x8CC702081A6439ECll, + 0x90BEFFFA23631E28ll, 0xA4506CEBDE82BDE9ll, 0xBEF9A3F7B2C67915ll, + 0xC67178F2E372532Bll, 0xCA273ECEEA26619Cll, 0xD186B8C721C0C207ll, + 0xEADA7DD6CDE0EB1Ell, 0xF57D4F7FEE6ED178ll, 0x06F067AA72176FBAll, + 0x0A637DC5A2C898A6ll, 0x113F9804BEF90DAEll, 0x1B710B35131C471Bll, + 0x28DB77F523047D84ll, 0x32CAAB7B40C72493ll, 0x3C9EBE0A15C9BEBCll, + 0x431D67C49C100D4Cll, 0x4CC5D4BECB3E42B6ll, 0x597F299CFC657E2All, + 0x5FCB6FAB3AD6FAECll, 0x6C44198C4A475817ll + }; + int t, t8; /* Loop counter */ + uint64_t temp1, temp2; /* Temporary word value */ + uint64_t W[80]; /* Word sequence */ + uint64_t A, B, C, D, E, F, G, H; /* Word buffers */ + + /* + * Initialize the first 16 words in the array W + */ + for (t = t8 = 0; t < 16; t++, t8 += 8) + W[t] = ((uint64_t)(context->Message_Block[t8 ]) << 56) | + ((uint64_t)(context->Message_Block[t8 + 1]) << 48) | + ((uint64_t)(context->Message_Block[t8 + 2]) << 40) | + ((uint64_t)(context->Message_Block[t8 + 3]) << 32) | + ((uint64_t)(context->Message_Block[t8 + 4]) << 24) | + ((uint64_t)(context->Message_Block[t8 + 5]) << 16) | + ((uint64_t)(context->Message_Block[t8 + 6]) << 8) | + ((uint64_t)(context->Message_Block[t8 + 7])); + + for (t = 16; t < 80; t++) + W[t] = SHA512_sigma1(W[t-2]) + W[t-7] + + SHA512_sigma0(W[t-15]) + W[t-16]; + A = context->Intermediate_Hash[0]; + B = context->Intermediate_Hash[1]; + C = context->Intermediate_Hash[2]; + D = context->Intermediate_Hash[3]; + E = context->Intermediate_Hash[4]; + F = context->Intermediate_Hash[5]; + G = context->Intermediate_Hash[6]; + H = context->Intermediate_Hash[7]; + + for (t = 0; t < 80; t++) { + temp1 = H + SHA512_SIGMA1(E) + SHA_Ch(E,F,G) + K[t] + W[t]; + temp2 = SHA512_SIGMA0(A) + SHA_Maj(A,B,C); + H = G; + G = F; + F = E; + E = D + temp1; + D = C; + C = B; + B = A; + A = temp1 + temp2; + } + + context->Intermediate_Hash[0] += A; + context->Intermediate_Hash[1] += B; + context->Intermediate_Hash[2] += C; + context->Intermediate_Hash[3] += D; + context->Intermediate_Hash[4] += E; + context->Intermediate_Hash[5] += F; + context->Intermediate_Hash[6] += G; + context->Intermediate_Hash[7] += H; +#endif /* USE_32BIT_ONLY */ + + context->Message_Block_Index = 0; +} + +/* + * SHA384_512Finalize + * + * Description: + * This helper function finishes off the digest calculations. + * + * Parameters: + * context: [in/out] + * The SHA context to update. + * Pad_Byte: [in] + * The last byte to add to the message block before the 0-padding + * and length. This will contain the last bits of the message + * followed by another single bit. If the message was an + * exact multiple of 8-bits long, Pad_Byte will be 0x80. + * + * Returns: + * sha Error Code. + * + */ +static void SHA384_512Finalize(SHA512Context *context, + uint8_t Pad_Byte) +{ + int_least16_t i; + SHA384_512PadMessage(context, Pad_Byte); + /* message may be sensitive, clear it out */ + for (i = 0; i < SHA512_Message_Block_Size; ++i) + context->Message_Block[i] = 0; +#ifdef USE_32BIT_ONLY /* and clear length */ + context->Length[0] = context->Length[1] = 0; + context->Length[2] = context->Length[3] = 0; +#else /* !USE_32BIT_ONLY */ + context->Length_High = context->Length_Low = 0; +#endif /* USE_32BIT_ONLY */ + context->Computed = 1; +} + +/* + * SHA384_512PadMessage + * + * Description: + * According to the standard, the message must be padded to the next + * even multiple of 1024 bits. The first padding bit must be a '1'. + * The last 128 bits represent the length of the original message. + * All bits in between should be 0. This helper function will + * pad the message according to those rules by filling the + * Message_Block array accordingly. When it returns, it can be + * assumed that the message digest has been computed. + * + * Parameters: + * context: [in/out] + * The context to pad. + * Pad_Byte: [in] + * The last byte to add to the message block before the 0-padding + * and length. This will contain the last bits of the message + * followed by another single bit. If the message was an + * exact multiple of 8-bits long, Pad_Byte will be 0x80. + * + * Returns: + * Nothing. + * + */ +static void SHA384_512PadMessage(SHA512Context *context, + uint8_t Pad_Byte) +{ + /* + * Check to see if the current message block is too small to hold + * the initial padding bits and length. If so, we will pad the + * block, process it, and then continue padding into a second + * block. + */ + if (context->Message_Block_Index >= (SHA512_Message_Block_Size-16)) { + context->Message_Block[context->Message_Block_Index++] = Pad_Byte; + while (context->Message_Block_Index < SHA512_Message_Block_Size) + context->Message_Block[context->Message_Block_Index++] = 0; + + SHA384_512ProcessMessageBlock(context); + } else + context->Message_Block[context->Message_Block_Index++] = Pad_Byte; + + while (context->Message_Block_Index < (SHA512_Message_Block_Size-16)) + context->Message_Block[context->Message_Block_Index++] = 0; + + /* + * Store the message length as the last 16 octets + */ +#ifdef USE_32BIT_ONLY + context->Message_Block[112] = (uint8_t)(context->Length[0] >> 24); + context->Message_Block[113] = (uint8_t)(context->Length[0] >> 16); + context->Message_Block[114] = (uint8_t)(context->Length[0] >> 8); + context->Message_Block[115] = (uint8_t)(context->Length[0]); + context->Message_Block[116] = (uint8_t)(context->Length[1] >> 24); + context->Message_Block[117] = (uint8_t)(context->Length[1] >> 16); + context->Message_Block[118] = (uint8_t)(context->Length[1] >> 8); + context->Message_Block[119] = (uint8_t)(context->Length[1]); + + context->Message_Block[120] = (uint8_t)(context->Length[2] >> 24); + context->Message_Block[121] = (uint8_t)(context->Length[2] >> 16); + context->Message_Block[122] = (uint8_t)(context->Length[2] >> 8); + context->Message_Block[123] = (uint8_t)(context->Length[2]); + context->Message_Block[124] = (uint8_t)(context->Length[3] >> 24); + context->Message_Block[125] = (uint8_t)(context->Length[3] >> 16); + context->Message_Block[126] = (uint8_t)(context->Length[3] >> 8); + context->Message_Block[127] = (uint8_t)(context->Length[3]); +#else /* !USE_32BIT_ONLY */ + context->Message_Block[112] = (uint8_t)(context->Length_High >> 56); + context->Message_Block[113] = (uint8_t)(context->Length_High >> 48); + context->Message_Block[114] = (uint8_t)(context->Length_High >> 40); + context->Message_Block[115] = (uint8_t)(context->Length_High >> 32); + context->Message_Block[116] = (uint8_t)(context->Length_High >> 24); + context->Message_Block[117] = (uint8_t)(context->Length_High >> 16); + context->Message_Block[118] = (uint8_t)(context->Length_High >> 8); + context->Message_Block[119] = (uint8_t)(context->Length_High); + + context->Message_Block[120] = (uint8_t)(context->Length_Low >> 56); + context->Message_Block[121] = (uint8_t)(context->Length_Low >> 48); + context->Message_Block[122] = (uint8_t)(context->Length_Low >> 40); + context->Message_Block[123] = (uint8_t)(context->Length_Low >> 32); + context->Message_Block[124] = (uint8_t)(context->Length_Low >> 24); + context->Message_Block[125] = (uint8_t)(context->Length_Low >> 16); + context->Message_Block[126] = (uint8_t)(context->Length_Low >> 8); + context->Message_Block[127] = (uint8_t)(context->Length_Low); +#endif /* USE_32BIT_ONLY */ + + SHA384_512ProcessMessageBlock(context); +} + +/* + * SHA384_512ResultN + * + * Description: + * This helper function will return the 384-bit or 512-bit message + * digest into the Message_Digest array provided by the caller. + * NOTE: + * The first octet of hash is stored in the element with index 0, + * the last octet of hash in the element with index 47/63. + * + * Parameters: + * context: [in/out] + * The context to use to calculate the SHA hash. + * Message_Digest[ ]: [out] + * Where the digest is returned. + * HashSize: [in] + * The size of the hash, either 48 or 64. + * + * Returns: + * sha Error Code. + * + */ +static int SHA384_512ResultN(SHA512Context *context, + uint8_t Message_Digest[ ], int HashSize) +{ + int i; +#ifdef USE_32BIT_ONLY + int i2; +#endif /* USE_32BIT_ONLY */ + + if (!context) return shaNull; + if (!Message_Digest) return shaNull; + if (context->Corrupted) return context->Corrupted; + + if (!context->Computed) + SHA384_512Finalize(context, 0x80); + +#ifdef USE_32BIT_ONLY + for (i = i2 = 0; i < HashSize; ) { + Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2]>>24); + Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2]>>16); + Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2]>>8); + Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2++]); + Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2]>>24); + Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2]>>16); + Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2]>>8); + Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2++]); + } +#else /* !USE_32BIT_ONLY */ + for (i = 0; i < HashSize; ++i) + Message_Digest[i] = (uint8_t) + (context->Intermediate_Hash[i>>3] >> 8 * ( 7 - ( i % 8 ) )); +#endif /* USE_32BIT_ONLY */ + + return shaSuccess; +} -- cgit v1.2.3