5 #ifndef BITCOIN_CRYPTO_SHA1_H     6 #define BITCOIN_CRYPTO_SHA1_H    16     unsigned char buf[64];
    23     CSHA1& 
Write(
const unsigned char* data, 
size_t len);
    28 #endif // BITCOIN_CRYPTO_SHA1_H CSHA1 & Write(const unsigned char *data, size_t len)
 
void Finalize(unsigned char hash[OUTPUT_SIZE])
 
static const size_t OUTPUT_SIZE