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文件: /usr/local/src/openssl-1.1.1w/doc/man3/EVP_des.pod
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=pod =head1 NAME EVP_des_cbc, EVP_des_cfb, EVP_des_cfb1, EVP_des_cfb8, EVP_des_cfb64, EVP_des_ecb, EVP_des_ofb, EVP_des_ede, EVP_des_ede_cbc, EVP_des_ede_cfb, EVP_des_ede_cfb64, EVP_des_ede_ecb, EVP_des_ede_ofb, EVP_des_ede3, EVP_des_ede3_cbc, EVP_des_ede3_cfb, EVP_des_ede3_cfb1, EVP_des_ede3_cfb8, EVP_des_ede3_cfb64, EVP_des_ede3_ecb, EVP_des_ede3_ofb, EVP_des_ede3_wrap - EVP DES cipher =head1 SYNOPSIS =for comment generic #include <openssl/evp.h> const EVP_CIPHER *EVP_ciphername(void) I<EVP_ciphername> is used a placeholder for any of the described cipher functions, such as I<EVP_des_cbc>. =head1 DESCRIPTION The DES encryption algorithm for EVP. =over 4 =item EVP_des_cbc(), EVP_des_ecb(), EVP_des_cfb(), EVP_des_cfb1(), EVP_des_cfb8(), EVP_des_cfb64(), EVP_des_ofb() DES in CBC, ECB, CFB with 64-bit shift, CFB with 1-bit shift, CFB with 8-bit shift and OFB modes. =item EVP_des_ede(), EVP_des_ede_cbc(), EVP_des_ede_cfb(), EVP_des_ede_cfb64(), EVP_des_ede_ecb(), EVP_des_ede_ofb() Two key triple DES in ECB, CBC, CFB with 64-bit shift and OFB modes. =item EVP_des_ede3(), EVP_des_ede3_cbc(), EVP_des_ede3_cfb(), EVP_des_ede3_cfb1(), EVP_des_ede3_cfb8(), EVP_des_ede3_cfb64(), EVP_des_ede3_ecb(), EVP_des_ede3_ofb() Three-key triple DES in ECB, CBC, CFB with 64-bit shift, CFB with 1-bit shift, CFB with 8-bit shift and OFB modes. =item EVP_des_ede3_wrap() Triple-DES key wrap according to RFC 3217 Section 3. =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
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