mdc2 - 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(3openssl) OpenSSL mdc2(3openssl) NAME MDC2, MDC2_Init, MDC2_Update, MDC2_Final - MDC2 hash function SYNOPSIS #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); DESCRIPTION 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. RETURN VALUES MDC2() returns a pointer to the hash value. MDC2_Init(), MDC2_Update() and MDC2_Final() return 1 for success, 0 otherwise. CONFORMING TO ISO/IEC 10118-2, with DES ATTRIBUTES See attributes(7) for descriptions of the following attributes: +---------------+--------------------------+ |ATTRIBUTE TYPE | ATTRIBUTE VALUE | +---------------+--------------------------+ |Availability | library/security/openssl | +---------------+--------------------------+ |Stability | Pass-through uncommitted | +---------------+--------------------------+ SEE ALSO sha(3), EVP_DigestInit(3) HISTORY MDC2(), MDC2_Init(), MDC2_Update() and MDC2_Final() are available since SSLeay 0.8. NOTES Source code for open source software components in Oracle Solaris can be found at https://www.oracle.com/downloads/opensource/solaris-source- code-downloads.html. This software was built from source available at https://github.com/oracle/solaris-userland. The original community source was downloaded from https://www.openssl.org/source/openssl-1.0.2ze.tar.gz. Further information about this software can be found on the open source community website at https://www.openssl.org/. 1.0.2ze 2022-05-03 mdc2(3openssl)