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