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//opt/alt/openssl11/share/man/man3/EVP_rc5_32_12_16_ofb.3ssl
.\" Automatically generated by Pod::Man 2.27 (Pod::Simple 3.28) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. \*(C+ will .\" give a nicer C++. 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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" EVP_rc5_32_12_16_cbc, EVP_rc5_32_12_16_cfb, EVP_rc5_32_12_16_cfb64, EVP_rc5_32_12_16_ecb, EVP_rc5_32_12_16_ofb \&\- EVP RC5 cipher .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #include <openssl/evp.h> \& \& const EVP_CIPHER *EVP_rc5_32_12_16_cbc(void) \& const EVP_CIPHER *EVP_rc5_32_12_16_cfb(void) \& const EVP_CIPHER *EVP_rc5_32_12_16_cfb64(void) \& const EVP_CIPHER *EVP_rc5_32_12_16_ecb(void) \& const EVP_CIPHER *EVP_rc5_32_12_16_ofb(void) .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" The \s-1RC5\s0 encryption algorithm for \s-1EVP.\s0 .IP "\fIEVP_rc5_32_12_16_cbc()\fR, \fIEVP_rc5_32_12_16_cfb()\fR, \fIEVP_rc5_32_12_16_cfb64()\fR, \fIEVP_rc5_32_12_16_ecb()\fR, \fIEVP_rc5_32_12_16_ofb()\fR" 4 .IX Item "EVP_rc5_32_12_16_cbc(), EVP_rc5_32_12_16_cfb(), EVP_rc5_32_12_16_cfb64(), EVP_rc5_32_12_16_ecb(), EVP_rc5_32_12_16_ofb()" \&\s-1RC5\s0 encryption algorithm in \s-1CBC, CFB, ECB\s0 and \s-1OFB\s0 modes respectively. This is a variable key length cipher with an additional \*(L"number of rounds\*(R" parameter. By default the key length is set to 128 bits and 12 rounds. Alternative key lengths can be set using \fIEVP_CIPHER_CTX_set_key_length\fR\|(3). The maximum key length is 2040 bits. .Sp The following rc5 specific \fIctrl\fRs are supported (see \&\fIEVP_CIPHER_CTX_ctrl\fR\|(3)). .RS 4 .IP "EVP_CIPHER_CTX_ctrl(ctx, \s-1EVP_CTRL_SET_RC5_ROUNDS,\s0 rounds, \s-1NULL\s0)" 4 .IX Item "EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_SET_RC5_ROUNDS, rounds, NULL)" Sets the number of rounds to \fBrounds\fR. This must be one of \s-1RC5_8_ROUNDS, RC5_12_ROUNDS\s0 or \s-1RC5_16_ROUNDS.\s0 .IP "EVP_CIPHER_CTX_ctrl(ctx, \s-1EVP_CTRL_GET_RC5_ROUNDS, 0,\s0 &rounds)" 4 .IX Item "EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GET_RC5_ROUNDS, 0, &rounds)" Stores the number of rounds currently configured in \fB*rounds\fR where \fB*rounds\fR is an int. .RE .RS 4 .RE .SH "RETURN VALUES" .IX Header "RETURN VALUES" These functions return an \fB\s-1EVP_CIPHER\s0\fR structure that contains the implementation of the symmetric cipher. See \fIEVP_CIPHER_meth_new\fR\|(3) for details of the \fB\s-1EVP_CIPHER\s0\fR structure. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fIevp\fR\|(7), \&\fIEVP_EncryptInit\fR\|(3), \&\fIEVP_CIPHER_meth_new\fR\|(3) .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright 2017\-2019 The OpenSSL Project Authors. All Rights Reserved. .PP Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.
