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Diffstat (limited to 'src/libs/3rdparty/botan/src/lib/filters/filters.h')
-rw-r--r-- | src/libs/3rdparty/botan/src/lib/filters/filters.h | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/src/libs/3rdparty/botan/src/lib/filters/filters.h b/src/libs/3rdparty/botan/src/lib/filters/filters.h new file mode 100644 index 0000000000..b4aee12078 --- /dev/null +++ b/src/libs/3rdparty/botan/src/lib/filters/filters.h @@ -0,0 +1,227 @@ +/* +* Filters +* (C) 1999-2007,2015 Jack Lloyd +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#ifndef BOTAN_FILTERS_H_ +#define BOTAN_FILTERS_H_ + +#include <botan/basefilt.h> +#include <botan/key_filt.h> +#include <botan/data_snk.h> +#include <botan/pipe.h> + +#if defined(BOTAN_HAS_STREAM_CIPHER) + #include <botan/stream_cipher.h> +#endif + +#if defined(BOTAN_HAS_HASH) + #include <botan/hash.h> +#endif + +#if defined(BOTAN_HAS_MAC) + #include <botan/mac.h> +#endif + +#if defined(BOTAN_HAS_CODEC_FILTERS) + #include <botan/b64_filt.h> + #include <botan/hex_filt.h> +#endif + +namespace Botan { + +#if defined(BOTAN_HAS_STREAM_CIPHER) + +/** +* Stream Cipher Filter +*/ +class BOTAN_PUBLIC_API(2,0) StreamCipher_Filter final : public Keyed_Filter + { + public: + + std::string name() const override { return m_cipher->name(); } + + /** + * Write input data + * @param input data + * @param input_len length of input in bytes + */ + void write(const uint8_t input[], size_t input_len) override; + + bool valid_iv_length(size_t iv_len) const override + { return m_cipher->valid_iv_length(iv_len); } + + /** + * Set the initialization vector for this filter. + * @param iv the initialization vector to set + */ + void set_iv(const InitializationVector& iv) override + { + m_cipher->set_iv(iv.begin(), iv.length()); + } + + /** + * Set the key of this filter. + * @param key the key to set + */ + void set_key(const SymmetricKey& key) override { m_cipher->set_key(key); } + + Key_Length_Specification key_spec() const override { return m_cipher->key_spec(); } + + /** + * Construct a stream cipher filter. + * @param cipher a cipher object to use + */ + explicit StreamCipher_Filter(StreamCipher* cipher); + + /** + * Construct a stream cipher filter. + * @param cipher a cipher object to use + * @param key the key to use inside this filter + */ + StreamCipher_Filter(StreamCipher* cipher, const SymmetricKey& key); + + /** + * Construct a stream cipher filter. + * @param cipher the name of the desired cipher + */ + explicit StreamCipher_Filter(const std::string& cipher); + + /** + * Construct a stream cipher filter. + * @param cipher the name of the desired cipher + * @param key the key to use inside this filter + */ + StreamCipher_Filter(const std::string& cipher, const SymmetricKey& key); + private: + secure_vector<uint8_t> m_buffer; + std::unique_ptr<StreamCipher> m_cipher; + }; +#endif + +#if defined(BOTAN_HAS_HASH) + +/** +* Hash Filter. +*/ +class BOTAN_PUBLIC_API(2,0) Hash_Filter final : public Filter + { + public: + void write(const uint8_t input[], size_t len) override { m_hash->update(input, len); } + void end_msg() override; + + std::string name() const override { return m_hash->name(); } + + /** + * Construct a hash filter. + * @param hash the hash function to use + * @param len the output length of this filter. Leave the default + * value 0 if you want to use the full output of the hashfunction + * hash. Otherwise, specify a smaller value here so that the + * output of the hash algorithm will be cut off. + */ + Hash_Filter(HashFunction* hash, size_t len = 0) : + m_hash(hash), m_out_len(len) {} + + /** + * Construct a hash filter. + * @param request the name of the hash algorithm to use + * @param len the output length of this filter. Leave the default + * value 0 if you want to use the full output of the hashfunction + * hash. Otherwise, specify a smaller value here so that the + * output of the hash algorithm will be cut off. + */ + Hash_Filter(const std::string& request, size_t len = 0); + + private: + std::unique_ptr<HashFunction> m_hash; + const size_t m_out_len; + }; +#endif + +#if defined(BOTAN_HAS_MAC) + +/** +* MessageAuthenticationCode Filter. +*/ +class BOTAN_PUBLIC_API(2,0) MAC_Filter final : public Keyed_Filter + { + public: + void write(const uint8_t input[], size_t len) override { m_mac->update(input, len); } + void end_msg() override; + + std::string name() const override { return m_mac->name(); } + + /** + * Set the key of this filter. + * @param key the key to set + */ + void set_key(const SymmetricKey& key) override { m_mac->set_key(key); } + + Key_Length_Specification key_spec() const override { return m_mac->key_spec(); } + + /** + * Construct a MAC filter. The MAC key will be left empty. + * @param mac the MAC to use + * @param out_len the output length of this filter. Leave the default + * value 0 if you want to use the full output of the + * MAC. Otherwise, specify a smaller value here so that the + * output of the MAC will be cut off. + */ + MAC_Filter(MessageAuthenticationCode* mac, + size_t out_len = 0) : + m_mac(mac), + m_out_len(out_len) + { + } + + /** + * Construct a MAC filter. + * @param mac the MAC to use + * @param key the MAC key to use + * @param out_len the output length of this filter. Leave the default + * value 0 if you want to use the full output of the + * MAC. Otherwise, specify a smaller value here so that the + * output of the MAC will be cut off. + */ + MAC_Filter(MessageAuthenticationCode* mac, + const SymmetricKey& key, + size_t out_len = 0) : + m_mac(mac), + m_out_len(out_len) + { + m_mac->set_key(key); + } + + /** + * Construct a MAC filter. The MAC key will be left empty. + * @param mac the name of the MAC to use + * @param len the output length of this filter. Leave the default + * value 0 if you want to use the full output of the + * MAC. Otherwise, specify a smaller value here so that the + * output of the MAC will be cut off. + */ + MAC_Filter(const std::string& mac, size_t len = 0); + + /** + * Construct a MAC filter. + * @param mac the name of the MAC to use + * @param key the MAC key to use + * @param len the output length of this filter. Leave the default + * value 0 if you want to use the full output of the + * MAC. Otherwise, specify a smaller value here so that the + * output of the MAC will be cut off. + */ + MAC_Filter(const std::string& mac, const SymmetricKey& key, + size_t len = 0); + private: + std::unique_ptr<MessageAuthenticationCode> m_mac; + const size_t m_out_len; + }; +#endif + +} + +#endif |