Embedded systems coursework 2.
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SHA1.h
00001 #ifndef SHA1_H 00002 #define SHA1_H 00003 00004 #include "HashAlgorithm.h" 00005 00006 00007 class SHA1 : public HashAlgorithm 00008 { 00009 public : 00010 00011 SHA1(); 00012 00013 virtual uint8_t outputSize() const; 00014 virtual void update(uint8_t *data, uint32_t length); 00015 virtual void finalize(uint8_t *hash); 00016 00017 static void computeHash(uint8_t *hash, uint8_t *data, uint32_t length); 00018 00019 private : 00020 static void computeBlock(uint32_t *h02, uint32_t *h12, uint32_t *h22, uint32_t *h32, uint32_t *h42, uint8_t *buffer); 00021 00022 uint32_t h0, h1, h2, h3, h4; 00023 uint32_t totalBufferLength; 00024 uint8_t buffer[64]; 00025 uint8_t bufferLength; 00026 }; 00027 00028 #endif
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