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authorBradley T. Hughes <bradley.hughes@nokia.com>2012-02-03 12:28:13 +0100
committerQt by Nokia <qt-info@nokia.com>2012-02-27 22:24:00 +0100
commitb51296c06433d4923e4dcfd2bc104ae3ab67fb43 (patch)
treeb97cbca6a01d898bce4c93a0cee31687c04fef7a /src/corelib/tools
parentbc6ad75d18a029da363afc4f6007aefc7962a8ad (diff)
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 <lars.knoll@nokia.com>
Diffstat (limited to 'src/corelib/tools')
-rw-r--r--src/corelib/tools/qcryptographichash.cpp95
-rw-r--r--src/corelib/tools/qcryptographichash.h6
2 files changed, 98 insertions, 3 deletions
diff --git a/src/corelib/tools/qcryptographichash.cpp b/src/corelib/tools/qcryptographichash.cpp
index 164660f818..9c27af032f 100644
--- a/src/corelib/tools/qcryptographichash.cpp
+++ b/src/corelib/tools/qcryptographichash.cpp
@@ -46,8 +46,42 @@
#include "../../3rdparty/md4/md4.h"
#include "../../3rdparty/md4/md4.cpp"
#include "../../3rdparty/sha1/sha1.cpp"
+
+/*
+ These 2 functions replace macros of the same name in sha224-256.c and
+ sha384-512.c. Originally, these macros relied on a global static 'addTemp'
+ variable. We do not want this for 2 reasons:
+
+ 1. since we are including the sources directly, the declaration of the 2 conflict
+
+ 2. static variables are not thread-safe, we do not want multiple threads
+ computing a hash to corrupt one another
+*/
+// Header from rfc6234 without modifications
+#include "../../3rdparty/rfc6234/sha.h"
+static int SHA224_256AddLength(SHA256Context *context, unsigned int length);
+static int SHA384_512AddLength(SHA512Context *context, unsigned int length);
+
+// Sources from rfc6234, with 4 modifications:
+// sha224-256.c - commented out 'static uint32_t addTemp;' on line 68
+// sha224-256.c - appended 'M' to the SHA224_256AddLength macro on line 70
+#include "../../3rdparty/rfc6234/sha224-256.c"
+// sha384-512.c - commented out 'static uint64_t addTemp;' on line 302
+// sha384-512.c - appended 'M' to the SHA224_256AddLength macro on line 304
+#include "../../3rdparty/rfc6234/sha384-512.c"
+
#include <qiodevice.h>
+static inline int SHA224_256AddLength(SHA256Context *context, unsigned int length)
+{
+ uint32_t addTemp;
+ return SHA224_256AddLengthM(context, length);
+}
+static inline int SHA384_512AddLength(SHA512Context *context, unsigned int length)
+{
+ uint64_t addTemp;
+ return SHA384_512AddLengthM(context, length);
+}
QT_BEGIN_NAMESPACE
@@ -59,6 +93,10 @@ public:
MD5Context md5Context;
md4_context md4Context;
Sha1State sha1Context;
+ SHA224Context sha224Context;
+ SHA256Context sha256Context;
+ SHA384Context sha384Context;
+ SHA512Context sha512Context;
};
QByteArray result;
};
@@ -75,7 +113,7 @@ public:
QCryptographicHash can be used to generate cryptographic hashes of binary or text data.
- Currently MD4, MD5, and SHA-1 are supported.
+ Currently MD4, MD5, SHA-1, SHA-224, SHA-256, SHA-384, and SHA-512 are supported.
*/
/*!
@@ -83,7 +121,11 @@ public:
\value Md4 Generate an MD4 hash sum
\value Md5 Generate an MD5 hash sum
- \value Sha1 Generate an SHA1 hash sum
+ \value Sha1 Generate an SHA-1 hash sum
+ \value Sha224 Generate an SHA-224 hash sum
+ \value Sha256 Generate an SHA-256 hash sum
+ \value Sha384 Generate an SHA-384 hash sum
+ \value Sha512 Generate an SHA-512 hash sum
*/
/*!
@@ -119,6 +161,18 @@ void QCryptographicHash::reset()
case Sha1:
sha1InitState(&d->sha1Context);
break;
+ case Sha224:
+ SHA224Reset(&d->sha224Context);
+ break;
+ case Sha256:
+ SHA256Reset(&d->sha256Context);
+ break;
+ case Sha384:
+ SHA384Reset(&d->sha384Context);
+ break;
+ case Sha512:
+ SHA512Reset(&d->sha512Context);
+ break;
}
d->result.clear();
}
@@ -139,6 +193,18 @@ void QCryptographicHash::addData(const char *data, int length)
case Sha1:
sha1Update(&d->sha1Context, (const unsigned char *)data, length);
break;
+ case Sha224:
+ SHA224Input(&d->sha224Context, reinterpret_cast<const unsigned char *>(data), length);
+ break;
+ case Sha256:
+ SHA256Input(&d->sha256Context, reinterpret_cast<const unsigned char *>(data), length);
+ break;
+ case Sha384:
+ SHA384Input(&d->sha384Context, reinterpret_cast<const unsigned char *>(data), length);
+ break;
+ case Sha512:
+ SHA512Input(&d->sha512Context, reinterpret_cast<const unsigned char *>(data), length);
+ break;
}
d->result.clear();
}
@@ -201,6 +267,31 @@ QByteArray QCryptographicHash::result() const
d->result.resize(20);
sha1FinalizeState(&copy);
sha1ToHash(&copy, (unsigned char *)d->result.data());
+ break;
+ }
+ case Sha224: {
+ SHA224Context copy = d->sha224Context;
+ d->result.resize(SHA224HashSize);
+ SHA224Result(&copy, reinterpret_cast<unsigned char *>(d->result.data()));
+ break;
+ }
+ case Sha256:{
+ SHA256Context copy = d->sha256Context;
+ d->result.resize(SHA256HashSize);
+ SHA256Result(&copy, reinterpret_cast<unsigned char *>(d->result.data()));
+ break;
+ }
+ case Sha384:{
+ SHA384Context copy = d->sha384Context;
+ d->result.resize(SHA384HashSize);
+ SHA384Result(&copy, reinterpret_cast<unsigned char *>(d->result.data()));
+ break;
+ }
+ case Sha512:{
+ SHA512Context copy = d->sha512Context;
+ d->result.resize(SHA512HashSize);
+ SHA512Result(&copy, reinterpret_cast<unsigned char *>(d->result.data()));
+ break;
}
}
return d->result;
diff --git a/src/corelib/tools/qcryptographichash.h b/src/corelib/tools/qcryptographichash.h
index 59314e1963..2bfc03373a 100644
--- a/src/corelib/tools/qcryptographichash.h
+++ b/src/corelib/tools/qcryptographichash.h
@@ -58,7 +58,11 @@ public:
enum Algorithm {
Md4,
Md5,
- Sha1
+ Sha1,
+ Sha224,
+ Sha256,
+ Sha384,
+ Sha512
};
QCryptographicHash(Algorithm method);