44 lines
849 B
C++
44 lines
849 B
C++
#ifndef Sha1_h
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#define Sha1_h
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#include <inttypes.h>
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#include "Print.h"
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#define HASH_LENGTH 20
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#define BLOCK_LENGTH 64
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union _buffer {
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uint8_t b[BLOCK_LENGTH];
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uint32_t w[BLOCK_LENGTH/4];
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};
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union _state {
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uint8_t b[HASH_LENGTH];
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uint32_t w[HASH_LENGTH/4];
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};
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class Sha1Class : public Print
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{
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public:
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void init(void);
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void initHmac(const uint8_t* secret, int secretLength);
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uint8_t* result(void);
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uint8_t* resultHmac(void);
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virtual size_t write(uint8_t);
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using Print::write;
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private:
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void pad();
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void addUncounted(uint8_t data);
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void hashBlock();
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uint32_t rol32(uint32_t number, uint8_t bits);
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_buffer buffer;
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uint8_t bufferOffset;
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_state state;
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uint32_t byteCount;
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uint8_t keyBuffer[BLOCK_LENGTH];
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uint8_t innerHash[HASH_LENGTH];
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};
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extern Sha1Class Sha1;
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#endif
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