openssl (3.1.3)
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VersionsEVP_MDC2(3ossl) OpenSSL EVP_MDC2(3ossl)
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) 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)
COPYRIGHT
Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved.
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>.
3.1.3 2023-09-19 EVP_MDC2(3ossl)
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) 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)
COPYRIGHT
Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved.
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>.
3.1.3 2023-09-19 EVP_MDC2(3ossl)