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MD2, MD5, MD2_Init, MD2_Update, MD2_Final, MD5_Init, MD5_Update, MD5_Final ? MD2 and MD5 hash functions |
#include <openssl/md2.h> unsigned char *MD2(const unsigned char *d, unsigned long n, unsigned char *md); void MD2_Init(MD2_CTX *c); void MD2_Update(MD2_CTX *c, const unsigned char *data, unsigned long len); void MD2_Final(unsigned char *md, MD2_CTX *c); #include <openssl/md5.h> unsigned char *MD5(const unsigned char *d, unsigned long n, unsigned char *md); void MD5_Init(MD5_CTX *c); void MD5_Update(MD5_CTX *c, const void *data, unsigned long len); void MD5_Final(unsigned char *md, MD5_CTX *c); |
MD2 and MD5 are cryptographic hash functions with a 128 bit output. MD2() and MD5() compute the MD2 and MD5 message digest of the n bytes at d and place it in md (which must have space for MD2_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. MD5_Init(), MD5_Update() and MD5_Final() are analogous using an MD5_CTX structure. Applications should use the higher level functions EVP_DigestInit(3) etc. instead of calling the hash functions directly. |
MD2 and MD5 are recommended only for compatibility with existing applications. In new applications, SHA?1 or RIPEMD?160 should be preferred. |
MD2() and MD5() return pointers to the hash value. MD2_Init(), MD2_Update() MD2_Final(), MD5_Init(), MD5_Update() and MD5_Final() do not return values. |
RFC 1319, RFC 1321 |
sha(3), ripemd(3), EVP_DigestInit(3) |
MD2(), MD2_Init(), MD2_Update() MD2_Final(), MD5(), MD5_Init(), MD5_Update() and MD5_Final() are available in all versions of SSLeay and OpenSSL. MD5_Final - MD2 and MD5 hash functions" |