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93b151a75f
All callers of the SHA1 code are C++. Might just as well use a C++ like interface. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
36 lines
930 B
C++
36 lines
930 B
C++
/*
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* SHA1 routine optimized to do word accesses rather than byte accesses,
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* and to avoid unnecessary copies into the context array.
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*
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* This was initially based on the Mozilla SHA1 implementation, although
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* none of the original Mozilla code remains.
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*/
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#ifndef SHA1_H
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#define SHA1_H
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#ifdef __cplusplus
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#include <array>
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#include <string>
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struct SHA1
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{
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SHA1();
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void update(const void *dataIn, unsigned long len);
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void update(const std::string &s);
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// Note: the hash() functions change state. Call only once.
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std::array<unsigned char, 20> hash();
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uint32_t hash_uint32(); // Return first 4 bytes of hash interpreted
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// as little-endian unsigned integer.
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private:
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unsigned long long size;
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unsigned int H[5];
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unsigned int W[16];
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};
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/* Helper function that calculates an SHA1 has and returns the first 4 bytes as uint32_t */
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uint32_t SHA1_uint32(const void *dataIn, unsigned long len);
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#endif
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#endif // SHA1_H
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