MDC2, MDC2_Init, MDC2_Update, MDC2_Final - MDC2 hash function
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.
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
The following functions may be used if the message is not completely stored in
initializes a MDC2_CTX
can be called repeatedly with chunks of the message to be
hashed ( len
bytes at data
places the message digest in md
, which must have
space for MDC2_DIGEST_LENGTH == 16 bytes of output, and erases the
Applications should use the higher level functions EVP_DigestInit(3)
instead of calling the hash functions directly.
returns a pointer to the hash value.
return 1 for
success, 0 otherwise.
ISO/IEC 10118-2, with DES
are available since SSLeay 0.8.