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-=pod
-
-=head1 NAME
-
-MDC2, MDC2_Init, MDC2_Update, MDC2_Final - MDC2 hash function
-
-=head1 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);
-
-=head1 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 B<n>
-bytes at B<d> and places it in B<md> (which must have space for
-MDC2_DIGEST_LENGTH == 16 bytes of output). If B<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 B<MDC2_CTX> structure.
-
-MDC2_Update() can be called repeatedly with chunks of the message to
-be hashed (B<len> bytes at B<data>).
-
-MDC2_Final() places the message digest in B<md>, which must have space
-for MDC2_DIGEST_LENGTH == 16 bytes of output, and erases the B<MDC2_CTX>.
-
-Applications should use the higher level functions
-L<EVP_DigestInit(3)|EVP_DigestInit(3)> etc. instead of calling the
-hash functions directly.
-
-=head1 RETURN VALUES
-
-MDC2() returns a pointer to the hash value.
-
-MDC2_Init(), MDC2_Update() and MDC2_Final() return 1 for success, 0 otherwise.
-
-=head1 CONFORMING TO
-
-ISO/IEC 10118-2, with DES
-
-=head1 SEE ALSO
-
-L<sha(3)|sha(3)>, L<EVP_DigestInit(3)|EVP_DigestInit(3)>
-
-=head1 HISTORY
-
-MDC2(), MDC2_Init(), MDC2_Update() and MDC2_Final() are available since
-SSLeay 0.8.
-
-=cut