mirror of https://github.com/openssl/openssl
84 lines
2.0 KiB
Plaintext
84 lines
2.0 KiB
Plaintext
=pod
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=head1 NAME
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EVP_rc2_cbc,
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EVP_rc2_cfb,
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EVP_rc2_cfb64,
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EVP_rc2_ecb,
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EVP_rc2_ofb,
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EVP_rc2_40_cbc,
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EVP_rc2_64_cbc
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- EVP RC2 cipher
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=head1 SYNOPSIS
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#include <openssl/evp.h>
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const EVP_CIPHER *EVP_rc2_cbc(void);
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const EVP_CIPHER *EVP_rc2_cfb(void);
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const EVP_CIPHER *EVP_rc2_cfb64(void);
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const EVP_CIPHER *EVP_rc2_ecb(void);
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const EVP_CIPHER *EVP_rc2_ofb(void);
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const EVP_CIPHER *EVP_rc2_40_cbc(void);
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const EVP_CIPHER *EVP_rc2_64_cbc(void);
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=head1 DESCRIPTION
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The RC2 encryption algorithm for EVP.
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=over 4
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=item EVP_rc2_cbc(),
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EVP_rc2_cfb(),
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EVP_rc2_cfb64(),
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EVP_rc2_ecb(),
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EVP_rc2_ofb()
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RC2 encryption algorithm in CBC, CFB, ECB and OFB modes respectively. This is a
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variable key length cipher with an additional parameter called "effective key
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bits" or "effective key length". By default both are set to 128 bits.
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=item EVP_rc2_40_cbc(),
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EVP_rc2_64_cbc()
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RC2 algorithm in CBC mode with a default key length and effective key length of
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40 and 64 bits.
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WARNING: these functions are obsolete. Their usage should be replaced with the
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EVP_rc2_cbc(), EVP_CIPHER_CTX_set_key_length() and EVP_CIPHER_CTX_ctrl()
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functions to set the key length and effective key length.
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=back
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=head1 NOTES
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Developers should be aware of the negative performance implications of
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calling these functions multiple times and should consider using
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L<EVP_CIPHER_fetch(3)> with L<EVP_CIPHER-RC2(7)> instead.
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See L<crypto(7)/Performance> for further information.
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=head1 RETURN VALUES
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These functions return an B<EVP_CIPHER> structure that contains the
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implementation of the symmetric cipher. See L<EVP_CIPHER_meth_new(3)> for
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details of the B<EVP_CIPHER> structure.
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=head1 SEE ALSO
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L<evp(7)>,
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L<EVP_EncryptInit(3)>,
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L<EVP_CIPHER_meth_new(3)>
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=head1 COPYRIGHT
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Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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