OpenSSL

Cryptography and SSL/TLS Toolkit

EVP_mdc2

NAME

EVP_mdc2 - MDC-2 For EVP

SYNOPSIS

#include <openssl/evp.h>

const EVP_MD *EVP_mdc2(void);

DESCRIPTION

MDC-2 (Modification Detection Code 2 or Meyer-Schilling) is a cryptographic hash function based on a block cipher. This implementation is only available with the legacy provider.

EVP_mdc2()

The MDC-2DES algorithm of using MDC-2 with the DES block cipher. It produces a 128-bit output from a given input.

NOTES

Developers should be aware of the negative performance implications of calling this function multiple times and should consider using EVP_MD_fetch(3) with EVP_MD-MDC2(7) instead. See "Performance" in crypto(7) for further information.

RETURN VALUES

These functions return a EVP_MD structure that contains the implementation of the message digest. See EVP_MD_meth_new(3) for details of the EVP_MD structure.

CONFORMING TO

ISO/IEC 10118-2:2000 Hash-Function 2, with DES as the underlying block cipher.

SEE ALSO

evp(7), provider(7), EVP_DigestInit(3)

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Licensed under the Apache License 2.0 (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at https://www.openssl.org/source/license.html.