MD2, MD4, MD5, MD2_Init, MD2_Update, MD2_Final, MD4_Init, MD4_Update, MD4_Final,
MD5_Init, MD5_Update, MD5_Final - MD2, MD4, and MD5 hash functions
#include <openssl/md2.h>
The following functions have been deprecated since OpenSSL 3.0, and can be
hidden entirely by defining
OPENSSL_API_COMPAT with a suitable version
value, see
openssl_user_macros(7):
unsigned char *MD2(const unsigned char *d, unsigned long n, unsigned char *md);
int MD2_Init(MD2_CTX *c);
int MD2_Update(MD2_CTX *c, const unsigned char *data, unsigned long len);
int MD2_Final(unsigned char *md, MD2_CTX *c);
#include <openssl/md4.h>
The following functions have been deprecated since OpenSSL 3.0, and can be
hidden entirely by defining
OPENSSL_API_COMPAT with a suitable version
value, see
openssl_user_macros(7):
unsigned char *MD4(const unsigned char *d, unsigned long n, unsigned char *md);
int MD4_Init(MD4_CTX *c);
int MD4_Update(MD4_CTX *c, const void *data, unsigned long len);
int MD4_Final(unsigned char *md, MD4_CTX *c);
#include <openssl/md5.h>
The following functions have been deprecated since OpenSSL 3.0, and can be
hidden entirely by defining
OPENSSL_API_COMPAT with a suitable version
value, see
openssl_user_macros(7):
unsigned char *MD5(const unsigned char *d, unsigned long n, unsigned char *md);
int MD5_Init(MD5_CTX *c);
int MD5_Update(MD5_CTX *c, const void *data, unsigned long len);
int MD5_Final(unsigned char *md, MD5_CTX *c);
All of the functions described on this page are deprecated. Applications should
instead use
EVP_DigestInit_ex(3),
EVP_DigestUpdate(3) and
EVP_DigestFinal_ex(3).
MD2, MD4, and MD5 are cryptographic hash functions with a 128 bit output.
MD2(),
MD4(), and
MD5() compute the MD2, MD4, and MD5
message digest of the
n bytes at
d and place it in
md
(which must have space for MD2_DIGEST_LENGTH == MD4_DIGEST_LENGTH ==
MD5_DIGEST_LENGTH == 16 bytes of output). If
md is NULL, the digest is
placed in a static array.
The following functions may be used if the message is not completely stored in
memory:
MD2_Init() initializes a
MD2_CTX structure.
MD2_Update() can be called repeatedly with chunks of the message to be
hashed (
len bytes at
data).
MD2_Final() places the message digest in
md, which must have space
for MD2_DIGEST_LENGTH == 16 bytes of output, and erases the
MD2_CTX.
MD4_Init(),
MD4_Update(),
MD4_Final(),
MD5_Init(),
MD5_Update(), and
MD5_Final() are analogous using an
MD4_CTX and
MD5_CTX structure.
Applications should use the higher level functions
EVP_DigestInit(3) etc.
instead of calling the hash functions directly.
MD2, MD4, and MD5 are recommended only for compatibility with existing
applications. In new applications, hashes from the SHA-2 or SHA-3 family
should be preferred.
MD2(),
MD4(), and
MD5() return pointers to the hash value.
MD2_Init(),
MD2_Update(),
MD2_Final(),
MD4_Init(),
MD4_Update(),
MD4_Final(),
MD5_Init(),
MD5_Update(), and
MD5_Final() return 1 for success, 0 otherwise.
RFC 1319, RFC 1320, RFC 1321
EVP_DigestInit(3),
EVP_MD-SHA2(7),
EVP_MD-SHA3(7)
All of these functions were deprecated in OpenSSL 3.0.
Copyright 2000-2023 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the Apache License 2.0 (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>.