| 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_rc2_cbc,
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| 6 | EVP_rc2_cfb,
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| 7 | EVP_rc2_cfb64,
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| 8 | EVP_rc2_ecb,
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| 9 | EVP_rc2_ofb,
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| 10 | EVP_rc2_40_cbc,
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| 11 | EVP_rc2_64_cbc
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| 12 | - EVP RC2 cipher
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| 13 |
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| 14 | =head1 SYNOPSIS
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| 15 |
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| 16 | #include <openssl/evp.h>
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| 17 |
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| 18 | const EVP_CIPHER *EVP_rc2_cbc(void);
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| 19 | const EVP_CIPHER *EVP_rc2_cfb(void);
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| 20 | const EVP_CIPHER *EVP_rc2_cfb64(void);
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| 21 | const EVP_CIPHER *EVP_rc2_ecb(void);
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| 22 | const EVP_CIPHER *EVP_rc2_ofb(void);
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| 23 | const EVP_CIPHER *EVP_rc2_40_cbc(void);
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| 24 | const EVP_CIPHER *EVP_rc2_64_cbc(void);
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| 25 |
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| 26 | =head1 DESCRIPTION
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| 27 |
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| 28 | The RC2 encryption algorithm for EVP.
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| 29 |
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| 30 | =over 4
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| 31 |
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| 32 | =item EVP_rc2_cbc(),
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| 33 | EVP_rc2_cfb(),
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| 34 | EVP_rc2_cfb64(),
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| 35 | EVP_rc2_ecb(),
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| 36 | EVP_rc2_ofb()
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| 37 |
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| 38 | RC2 encryption algorithm in CBC, CFB, ECB and OFB modes respectively. This is a
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| 39 | variable key length cipher with an additional parameter called "effective key
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| 40 | bits" or "effective key length". By default both are set to 128 bits.
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| 41 |
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| 42 | =item EVP_rc2_40_cbc(),
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| 43 | EVP_rc2_64_cbc()
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| 44 |
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| 45 | RC2 algorithm in CBC mode with a default key length and effective key length of
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| 46 | 40 and 64 bits.
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| 47 |
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| 48 | WARNING: these functions are obsolete. Their usage should be replaced with the
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| 49 | EVP_rc2_cbc(), EVP_CIPHER_CTX_set_key_length() and EVP_CIPHER_CTX_ctrl()
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| 50 | functions to set the key length and effective key length.
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| 51 |
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| 52 | =back
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| 53 |
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| 54 | =head1 NOTES
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| 55 |
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| 56 | Developers should be aware of the negative performance implications of
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| 57 | calling these functions multiple times and should consider using
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| 58 | L<EVP_CIPHER_fetch(3)> instead.
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| 59 | See L<crypto(7)/Performance> for further information.
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| 60 |
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| 61 | =head1 RETURN VALUES
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| 62 |
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| 63 | These functions return an B<EVP_CIPHER> structure that contains the
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| 64 | implementation of the symmetric cipher. See L<EVP_CIPHER_meth_new(3)> for
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| 65 | details of the B<EVP_CIPHER> structure.
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| 66 |
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| 67 | =head1 SEE ALSO
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| 68 |
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| 69 | L<evp(7)>,
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| 70 | L<EVP_EncryptInit(3)>,
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| 71 | L<EVP_CIPHER_meth_new(3)>
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| 72 |
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| 73 | =head1 COPYRIGHT
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| 74 |
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| 75 | Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved.
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| 76 |
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| 77 | Licensed under the Apache License 2.0 (the "License"). You may not use
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| 78 | this file except in compliance with the License. You can obtain a copy
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| 79 | in the file LICENSE in the source distribution or at
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| 80 | L<https://www.openssl.org/source/license.html>.
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| 81 |
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| 82 | =cut
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| 83 |
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