=pod =head1 NAME EVP_md5, EVP_md5_sha1 - MD5 For EVP =head1 SYNOPSIS #include const EVP_MD *EVP_md5(void); const EVP_MD *EVP_md5_sha1(void); =head1 DESCRIPTION MD5 is a cryptographic hash function standardized in RFC 1321 and designed by Ronald Rivest. The CMU Software Engineering Institute considers MD5 unsuitable for further use since its security has been severely compromised. =over 4 =item EVP_md5() The MD5 algorithm which produces a 128-bit output from a given input. =item EVP_md5_sha1() A hash algorithm of SSL v3 that combines MD5 with SHA-1 as decirbed in RFC 6101. WARNING: this algorithm is not intended for non-SSL usage. =back =head1 RETURN VALUES These functions return a B structure that contains the implementation of the symmetric cipher. See L for details of the B structure. =head1 CONFORMING TO IETF RFC 1321. =head1 SEE ALSO L, L =head1 COPYRIGHT Copyright 2017-2018 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 L. =cut