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);
 
CSHA1 & Write(const unsigned char *data, size_t len)
static const size_t OUTPUT_SIZE
void Finalize(unsigned char hash[OUTPUT_SIZE])