GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
CentOS 5.6 |
|
 |
MDC2_Update(3ssl) |
 |
MDC2, MDC2_Init, MDC2_Update, MDC2_Final − MDC2 hash function
#include <openssl/mdc2.h>
unsigned char *MDC2(const unsigned char *d, unsigned long n,
unsigned char *md);
int MDC2_Init(MDC2_CTX *c);
int MDC2_Update(MDC2_CTX *c, const unsigned char *data,
unsigned long len);
int MDC2_Final(unsigned char *md, MDC2_CTX *c);
MDC2 is a method to construct hash functions with 128 bit output from block ciphers. These functions are an implementation of MDC2 with DES .
MDC2 () computes the MDC2 message digest of the n bytes at d and places it in md (which must have space for MDC2_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:
MDC2_Init() initializes a MDC2_CTX structure.
MDC2_Update() can be called repeatedly with chunks of the message to be hashed (len bytes at data).
MDC2_Final() places the message digest in md, which must have space for MDC2_DIGEST_LENGTH == 16 bytes of output, and erases the MDC2_CTX .
Applications should use the higher level functions EVP_DigestInit(3) etc. instead of calling the hash functions directly.
MDC2 () returns a pointer to the hash value.
MDC2_Init(), MDC2_Update() and MDC2_Final() return 1 for success, 0 otherwise.
ISO/IEC 10118−2, with DES
sha(3), EVP_DigestInit(3)
MDC2 (), MDC2_Init(), MDC2_Update() and MDC2_Final() are available since SSLeay 0.8.
|
MDC2_Update(3ssl) | |