792cb4ee8d
The maximum key length for rc5 is 2040 bits so we should not attempt to use keys longer than this. Issue found by OSS-Fuzz and Guido Vranken. Reviewed-by: Paul Dale <paul.dale@oracle.com> (Merged from https://github.com/openssl/openssl/pull/8834)
82 lines
2 KiB
Text
82 lines
2 KiB
Text
=pod
|
|
|
|
=head1 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
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#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)
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
The RC5 encryption algorithm for EVP.
|
|
|
|
=over 4
|
|
|
|
=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()
|
|
|
|
RC5 encryption algorithm in CBC, CFB, ECB and OFB modes respectively. This is a
|
|
variable key length cipher with an additional "number of rounds" parameter. By
|
|
default the key length is set to 128 bits and 12 rounds. Alternative key lengths
|
|
can be set using L<EVP_CIPHER_CTX_set_key_length(3)>. The maximum key length is
|
|
2040 bits.
|
|
|
|
The following rc5 specific I<ctrl>s are supported (see
|
|
L<EVP_CIPHER_CTX_ctrl(3)>).
|
|
|
|
=over 4
|
|
|
|
=item EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_SET_RC5_ROUNDS, rounds, NULL)
|
|
|
|
Sets the number of rounds to B<rounds>. This must be one of RC5_8_ROUNDS,
|
|
RC5_12_ROUNDS or RC5_16_ROUNDS.
|
|
|
|
=item EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GET_RC5_ROUNDS, 0, &rounds)
|
|
|
|
Stores the number of rounds currently configured in B<*rounds> where B<*rounds>
|
|
is an int.
|
|
|
|
=back
|
|
|
|
=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 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
|
|
L<https://www.openssl.org/source/license.html>.
|
|
|
|
=cut
|
|
|