SHA256_Init

- NAME
- SYNOPSIS
- DESCRIPTION
- RETURN VALUES
- CONFORMING TO
- SEE ALSO
- COPYRIGHT

# NAME

SHA1, SHA1_Init, SHA1_Update, SHA1_Final, SHA224, SHA224_Init, SHA224_Update, SHA224_Final, SHA256, SHA256_Init, SHA256_Update, SHA256_Final, SHA384, SHA384_Init, SHA384_Update, SHA384_Final, SHA512, SHA512_Init, SHA512_Update, SHA512_Final - Secure Hash Algorithm

# SYNOPSIS

     #include <openssl/sha.h>

     int SHA1_Init(SHA_CTX *c);
     int SHA1_Update(SHA_CTX *c, const void *data, size_t len);
     int SHA1_Final(unsigned char *md, SHA_CTX *c);
     unsigned char *SHA1(const unsigned char *d, size_t n,
          unsigned char *md);

     int SHA224_Init(SHA256_CTX *c);
     int SHA224_Update(SHA256_CTX *c, const void *data, size_t len);
     int SHA224_Final(unsigned char *md, SHA256_CTX *c);
     unsigned char *SHA224(const unsigned char *d, size_t n,
          unsigned char *md);

     int SHA256_Init(SHA256_CTX *c);
     int SHA256_Update(SHA256_CTX *c, const void *data, size_t len);
     int SHA256_Final(unsigned char *md, SHA256_CTX *c);
     unsigned char *SHA256(const unsigned char *d, size_t n,
          unsigned char *md);

     int SHA384_Init(SHA512_CTX *c);
     int SHA384_Update(SHA512_CTX *c, const void *data, size_t len);
     int SHA384_Final(unsigned char *md, SHA512_CTX *c);
     unsigned char *SHA384(const unsigned char *d, size_t n,
          unsigned char *md);

     int SHA512_Init(SHA512_CTX *c);
     int SHA512_Update(SHA512_CTX *c, const void *data, size_t len);
     int SHA512_Final(unsigned char *md, SHA512_CTX *c);
     unsigned char *SHA512(const unsigned char *d, size_t n,
          unsigned char *md);

# DESCRIPTION

Applications should use the higher level functions RETURN VALUES

SHA1(), SHA224(), SHA256(), SHA384() and SHA512() return a pointer to the hash value.

SHA1_Init(), SHA1_Update() and SHA1_Final() and equivalent SHA224, SHA256, SHA384 and SHA512 functions return 1 for success, 0 otherwise.

# CONFORMING TO

US Federal Information Processing Standard FIPS PUB 180-4 (Secure Hash Standard), ANSI X9.30

# SEE ALSO

COPYRIGHT

Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at https://www.openssl.org/source/license.html.