1=pod 2 3=head1 NAME 4 5EVP_des_cbc, 6EVP_des_cfb, 7EVP_des_cfb1, 8EVP_des_cfb8, 9EVP_des_cfb64, 10EVP_des_ecb, 11EVP_des_ofb, 12EVP_des_ede, 13EVP_des_ede_cbc, 14EVP_des_ede_cfb, 15EVP_des_ede_cfb64, 16EVP_des_ede_ecb, 17EVP_des_ede_ofb, 18EVP_des_ede3, 19EVP_des_ede3_cbc, 20EVP_des_ede3_cfb, 21EVP_des_ede3_cfb1, 22EVP_des_ede3_cfb8, 23EVP_des_ede3_cfb64, 24EVP_des_ede3_ecb, 25EVP_des_ede3_ofb, 26EVP_des_ede3_wrap 27- EVP DES cipher 28 29=head1 SYNOPSIS 30 31=for openssl generic 32 33 #include <openssl/evp.h> 34 35 const EVP_CIPHER *EVP_ciphername(void) 36 37I<EVP_ciphername> is used a placeholder for any of the described cipher 38functions, such as I<EVP_des_cbc>. 39 40=head1 DESCRIPTION 41 42The DES encryption algorithm for EVP. 43 44=over 4 45 46=item EVP_des_cbc(), 47EVP_des_ecb(), 48EVP_des_cfb(), 49EVP_des_cfb1(), 50EVP_des_cfb8(), 51EVP_des_cfb64(), 52EVP_des_ofb() 53 54DES in CBC, ECB, CFB with 64-bit shift, CFB with 1-bit shift, CFB with 8-bit 55shift and OFB modes. 56 57None of these algorithms are provided by the OpenSSL default provider. 58To use them it is necessary to load either the OpenSSL legacy provider or another 59implementation. 60 61=item EVP_des_ede(), 62EVP_des_ede_cbc(), 63EVP_des_ede_cfb(), 64EVP_des_ede_cfb64(), 65EVP_des_ede_ecb(), 66EVP_des_ede_ofb() 67 68Two key triple DES in ECB, CBC, CFB with 64-bit shift and OFB modes. 69 70=item EVP_des_ede3(), 71EVP_des_ede3_cbc(), 72EVP_des_ede3_cfb(), 73EVP_des_ede3_cfb1(), 74EVP_des_ede3_cfb8(), 75EVP_des_ede3_cfb64(), 76EVP_des_ede3_ecb(), 77EVP_des_ede3_ofb() 78 79Three-key triple DES in ECB, CBC, CFB with 64-bit shift, CFB with 1-bit shift, 80CFB with 8-bit shift and OFB modes. 81 82=item EVP_des_ede3_wrap() 83 84Triple-DES key wrap according to RFC 3217 Section 3. 85 86=back 87 88=head1 NOTES 89 90Developers should be aware of the negative performance implications of 91calling these functions multiple times and should consider using 92L<EVP_CIPHER_fetch(3)> with L<EVP_CIPHER-DES(7)> instead. 93See L<crypto(7)/Performance> for further information. 94 95=head1 RETURN VALUES 96 97These functions return an B<EVP_CIPHER> structure that contains the 98implementation of the symmetric cipher. See L<EVP_CIPHER_meth_new(3)> for 99details of the B<EVP_CIPHER> structure. 100 101=head1 SEE ALSO 102 103L<evp(7)>, 104L<EVP_EncryptInit(3)>, 105L<EVP_CIPHER_meth_new(3)> 106 107=head1 COPYRIGHT 108 109Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved. 110 111Licensed under the Apache License 2.0 (the "License"). You may not use 112this file except in compliance with the License. You can obtain a copy 113in the file LICENSE in the source distribution or at 114L<https://www.openssl.org/source/license.html>. 115 116=cut 117 118