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

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);

DESCRIPTION

       The RC2 encryption algorithm for EVP.

       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.

       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.

NOTES

       Developers should be aware of the negative performance implications of calling these  functions  multiple
       times and should consider using EVP_CIPHER_fetch(3) with EVP_CIPHER-RC2(7) instead.  See "Performance" in
       crypto(7) for further information.

RETURN VALUES

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

SEE ALSO

       evp(7), EVP_EncryptInit(3), EVP_CIPHER_meth_new(3)

COPYRIGHT

       Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the Apache License 2.0 (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
       <https://www.openssl.org/source/license.html>.

3.0.13                                             2025-02-05                                  EVP_RC2_CBC(3SSL)