1=pod 2 3=head1 NAME 4 5EVP_md5 6- MD5 For EVP 7 8=head1 SYNOPSIS 9 10 #include <openssl/evp.h> 11 12 const EVP_MD *EVP_md5(void); 13 14=head1 DESCRIPTION 15 16MD5 is a cryptographic hash function standardized in RFC 1321 and designed by 17Ronald Rivest. 18 19The CMU Software Engineering Institute considers MD5 unsuitable for further 20use since its security has been severely compromised. 21 22=over 4 23 24=item EVP_md5() 25 26The MD5 algorithm which produces a 128-bit output from a given input. 27 28=item EVP_md5_sha1() 29 30A hash algorithm of SSL v3 that combines MD5 with SHA-1 as decirbed in RFC 316101. 32 33WARNING: this algorithm is not intended for non-SSL usage. 34 35=back 36 37 38=head1 RETURN VALUES 39 40These functions return a B<EVP_MD> structure that contains the 41implementation of the symmetric cipher. See L<EVP_MD_meth_new(3)> for 42details of the B<EVP_MD> structure. 43 44=head1 CONFORMING TO 45 46IETF RFC 1321. 47 48=head1 SEE ALSO 49 50L<evp(7)>, 51L<EVP_DigestInit(3)> 52 53=head1 COPYRIGHT 54 55Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved. 56 57Licensed under the OpenSSL license (the "License"). You may not use 58this file except in compliance with the License. You can obtain a copy 59in the file LICENSE in the source distribution or at 60L<https://www.openssl.org/source/license.html>. 61 62=cut 63 64