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=pod

=head1 NAME

EVP_rc2_cbc,
EVP_rc2_cfb,
EVP_rc2_cfb64,
EVP_rc2_ecb,
EVP_rc2_ofb,
EVP_rc2_40_cbc,
EVP_rc2_64_cbc
- EVP RC2 cipher

=head1 SYNOPSIS

 #include <openssl/evp.h>

 const EVP_CIPHER *EVP_rc2_cbc(void)
 const EVP_CIPHER *EVP_rc2_cfb(void)
 const EVP_CIPHER *EVP_rc2_cfb64(void)
 const EVP_CIPHER *EVP_rc2_ecb(void)
 const EVP_CIPHER *EVP_rc2_ofb(void)
 const EVP_CIPHER *EVP_rc2_40_cbc(void)
 const EVP_CIPHER *EVP_rc2_64_cbc(void)

=head1 DESCRIPTION

The RC2 encryption algorithm for EVP.

=over 4

=item EVP_rc2_cbc(),
EVP_rc2_cfb(),
EVP_rc2_cfb64(),
EVP_rc2_ecb(),
EVP_rc2_ofb()

RC2 encryption algorithm in CBC, CFB, ECB and OFB modes respectively. This is a
variable key length cipher with an additional parameter called "effective key
bits" or "effective key length". By default both are set to 128 bits.

=item EVP_rc2_40_cbc(),
EVP_rc2_64_cbc()

RC2 algorithm in CBC mode with a default key length and effective key length of
40 and 64 bits.

WARNING: these functions are obsolete. Their usage should be replaced with the
EVP_rc2_cbc(), EVP_CIPHER_CTX_set_key_length() and EVP_CIPHER_CTX_ctrl()
functions to set the key length and effective key length.

=back

=head1 RETURN VALUES

These functions return an B<EVP_CIPHER> structure that contains the
implementation of the symmetric cipher. See L<EVP_CIPHER_meth_new(3)> for
details of the B<EVP_CIPHER> structure.

=head1 SEE ALSO

L<evp(7)>,
L<EVP_EncryptInit(3)>,
L<EVP_CIPHER_meth_new(3)>

=head1 COPYRIGHT

Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the OpenSSL license (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<https://www.openssl.org/source/license.html>.

=cut