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Diffstat (limited to 'comm/third_party/botan/src/lib/hash/mdx_hash/mdx_hash.h')
-rw-r--r-- | comm/third_party/botan/src/lib/hash/mdx_hash/mdx_hash.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/hash/mdx_hash/mdx_hash.h b/comm/third_party/botan/src/lib/hash/mdx_hash/mdx_hash.h new file mode 100644 index 0000000000..a061e9c8a3 --- /dev/null +++ b/comm/third_party/botan/src/lib/hash/mdx_hash/mdx_hash.h @@ -0,0 +1,73 @@ +/* +* MDx Hash Function +* (C) 1999-2008 Jack Lloyd +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#ifndef BOTAN_MDX_BASE_H_ +#define BOTAN_MDX_BASE_H_ + +#include <botan/hash.h> + +BOTAN_FUTURE_INTERNAL_HEADER(mdx_hash.h) + +namespace Botan { + +/** +* MDx Hash Function Base Class +*/ +class BOTAN_PUBLIC_API(2,0) MDx_HashFunction : public HashFunction + { + public: + /** + * @param block_length is the number of bytes per block, which must + * be a power of 2 and at least 8. + * @param big_byte_endian specifies if the hash uses big-endian bytes + * @param big_bit_endian specifies if the hash uses big-endian bits + * @param counter_size specifies the size of the counter var in bytes + */ + MDx_HashFunction(size_t block_length, + bool big_byte_endian, + bool big_bit_endian, + uint8_t counter_size = 8); + + size_t hash_block_size() const override final { return m_buffer.size(); } + protected: + void add_data(const uint8_t input[], size_t length) override final; + void final_result(uint8_t output[]) override final; + + /** + * Run the hash's compression function over a set of blocks + * @param blocks the input + * @param block_n the number of blocks + */ + virtual void compress_n(const uint8_t blocks[], size_t block_n) = 0; + + void clear() override; + + /** + * Copy the output to the buffer + * @param buffer to put the output into + */ + virtual void copy_out(uint8_t buffer[]) = 0; + + /** + * Write the count, if used, to this spot + * @param out where to write the counter to + */ + virtual void write_count(uint8_t out[]); + private: + const uint8_t m_pad_char; + const uint8_t m_counter_size; + const uint8_t m_block_bits; + const bool m_count_big_endian; + + uint64_t m_count; + secure_vector<uint8_t> m_buffer; + size_t m_position; + }; + +} + +#endif |