sync code with last improvements from OpenBSD
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22 changed files with 1201 additions and 743 deletions
260
lib/libcrypto/man/EVP_CIPHER_CTX_ctrl.3
Normal file
260
lib/libcrypto/man/EVP_CIPHER_CTX_ctrl.3
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.\" $OpenBSD: EVP_CIPHER_CTX_ctrl.3,v 1.1 2023/08/31 17:27:41 schwarze Exp $
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.\" full merge up to: OpenSSL 5211e094 Nov 11 14:39:11 2014 -0800
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.\"
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.\" This file is a derived work.
|
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.\" The changes are covered by the following Copyright and license:
|
||||
.\"
|
||||
.\" Copyright (c) 2018, 2023 Ingo Schwarze <schwarze@openbsd.org>
|
||||
.\" Copyright (c) 2018 Damien Miller <djm@openbsd.org>
|
||||
.\"
|
||||
.\" Permission to use, copy, modify, and distribute this software for any
|
||||
.\" purpose with or without fee is hereby granted, provided that the above
|
||||
.\" copyright notice and this permission notice appear in all copies.
|
||||
.\"
|
||||
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
||||
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
||||
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
||||
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
||||
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
||||
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||
.\"
|
||||
.\" The original file was written by Dr. Stephen Henson <steve@openssl.org>.
|
||||
.\" Copyright (c) 2000, 2001, 2016 The OpenSSL Project.
|
||||
.\" All rights reserved.
|
||||
.\"
|
||||
.\" Redistribution and use in source and binary forms, with or without
|
||||
.\" modification, are permitted provided that the following conditions
|
||||
.\" are met:
|
||||
.\"
|
||||
.\" 1. Redistributions of source code must retain the above copyright
|
||||
.\" notice, this list of conditions and the following disclaimer.
|
||||
.\"
|
||||
.\" 2. Redistributions in binary form must reproduce the above copyright
|
||||
.\" notice, this list of conditions and the following disclaimer in
|
||||
.\" the documentation and/or other materials provided with the
|
||||
.\" distribution.
|
||||
.\"
|
||||
.\" 3. All advertising materials mentioning features or use of this
|
||||
.\" software must display the following acknowledgment:
|
||||
.\" "This product includes software developed by the OpenSSL Project
|
||||
.\" for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
|
||||
.\"
|
||||
.\" 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
||||
.\" endorse or promote products derived from this software without
|
||||
.\" prior written permission. For written permission, please contact
|
||||
.\" openssl-core@openssl.org.
|
||||
.\"
|
||||
.\" 5. Products derived from this software may not be called "OpenSSL"
|
||||
.\" nor may "OpenSSL" appear in their names without prior written
|
||||
.\" permission of the OpenSSL Project.
|
||||
.\"
|
||||
.\" 6. Redistributions of any form whatsoever must retain the following
|
||||
.\" acknowledgment:
|
||||
.\" "This product includes software developed by the OpenSSL Project
|
||||
.\" for use in the OpenSSL Toolkit (http://www.openssl.org/)"
|
||||
.\"
|
||||
.\" THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
||||
.\" EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
|
||||
.\" ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||||
.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||||
.\" OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd $Mdocdate: August 31 2023 $
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.Dt EVP_CIPHER_CTX_CTRL 3
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.Os
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.Sh NAME
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.Nm EVP_CIPHER_CTX_ctrl ,
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.Nm EVP_CIPHER_CTX_set_padding ,
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.Nm EVP_CIPHER_CTX_set_key_length ,
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.Nm EVP_CIPHER_CTX_key_length ,
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.Nm EVP_CIPHER_key_length ,
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.Nm EVP_CIPHER_CTX_iv_length ,
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.Nm EVP_CIPHER_iv_length ,
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.Nm EVP_CIPHER_CTX_set_iv ,
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.Nm EVP_CIPHER_CTX_get_iv
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.Nd configure EVP cipher contexts
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.Sh SYNOPSIS
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.In openssl/evp.h
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.Ft int
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.Fo EVP_CIPHER_CTX_ctrl
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.Fa "EVP_CIPHER_CTX *ctx"
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.Fa "int type"
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.Fa "int arg"
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.Fa "void *ptr"
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.Fc
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.Ft int
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.Fo EVP_CIPHER_CTX_set_padding
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.Fa "EVP_CIPHER_CTX *x"
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.Fa "int padding"
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.Fc
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.Ft int
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.Fo EVP_CIPHER_CTX_set_key_length
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.Fa "EVP_CIPHER_CTX *x"
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.Fa "int keylen"
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.Fc
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.Ft int
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.Fo EVP_CIPHER_CTX_key_length
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.Fa "const EVP_CIPHER_CTX *ctx"
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.Fc
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.Ft int
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.Fo EVP_CIPHER_key_length
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.Fa "const EVP_CIPHER *e"
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.Fc
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.Ft int
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.Fo EVP_CIPHER_CTX_iv_length
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.Fa "const EVP_CIPHER_CTX *ctx"
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.Fc
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.Ft int
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.Fo EVP_CIPHER_iv_length
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.Fa "const EVP_CIPHER *e"
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.Fc
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.Ft int
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.Fo EVP_CIPHER_CTX_set_iv
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.Fa "EVP_CIPHER_CTX *ctx"
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.Fa "const unsigned char *iv"
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.Fa "size_t len"
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.Fc
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.Ft int
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.Fo EVP_CIPHER_CTX_get_iv
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.Fa "const EVP_CIPHER_CTX *ctx"
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.Fa "unsigned char *iv"
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.Fa "size_t len"
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.Fc
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.Sh DESCRIPTION
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.Fn EVP_CIPHER_CTX_ctrl
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allows various cipher specific parameters to be determined and set.
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Currently only the RC2 effective key length can be set.
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.Pp
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.Fn EVP_CIPHER_CTX_set_padding
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enables or disables padding.
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This function should be called after the context is set up for
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encryption or decryption with
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.Xr EVP_EncryptInit_ex 3 ,
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.Xr EVP_DecryptInit_ex 3 ,
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or
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.Xr EVP_CipherInit_ex 3 .
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By default encryption operations are padded using standard block padding
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and the padding is checked and removed when decrypting.
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If the
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.Fa padding
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parameter is zero, then no padding is performed, the total amount of data
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encrypted or decrypted must then be a multiple of the block size or an
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error will occur.
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.Pp
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.Fn EVP_CIPHER_CTX_set_key_length
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sets the key length of the cipher ctx.
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If the cipher is a fixed length cipher, then attempting to set the key
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length to any value other than the fixed value is an error.
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.Pp
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.Fn EVP_CIPHER_CTX_key_length
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and
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.Fn EVP_CIPHER_key_length
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return the key length of a cipher when passed an
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.Vt EVP_CIPHER_CTX
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or
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.Vt EVP_CIPHER
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structure.
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The constant
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.Dv EVP_MAX_KEY_LENGTH
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is the maximum key length for all ciphers.
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Note: although
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.Fn EVP_CIPHER_key_length
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is fixed for a given cipher, the value of
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.Fn EVP_CIPHER_CTX_key_length
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may be different for variable key length ciphers.
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.Pp
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.Fn EVP_CIPHER_CTX_iv_length
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and
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.Fn EVP_CIPHER_iv_length
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return the IV length of a cipher when passed an
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.Vt EVP_CIPHER_CTX
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or
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.Vt EVP_CIPHER .
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It will return zero if the cipher does not use an IV.
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The constant
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.Dv EVP_MAX_IV_LENGTH
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is the maximum IV length for all ciphers.
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.Pp
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.Fn EVP_CIPHER_CTX_set_iv
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and
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.Fn EVP_CIPHER_CTX_get_iv
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set and retrieve the IV for an
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.Vt EVP_CIPHER_CTX ,
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respectively.
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In both cases, the specified IV length must exactly equal the expected
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IV length for the context as returned by
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.Fn EVP_CIPHER_CTX_iv_length .
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.Sh RETURN VALUES
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.Fn EVP_CIPHER_CTX_ctrl
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usually returns 1 for success, 0 for failure, or \-1 if the
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.Fa type
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is not supported by the
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.Fa ctx ,
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but there may be exceptions for some
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.Fa type
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arguments.
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.Pp
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.Fn EVP_CIPHER_CTX_set_padding
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always returns 1.
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.Pp
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.Fn EVP_CIPHER_CTX_set_key_length ,
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.Fn EVP_CIPHER_CTX_set_iv ,
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and
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.Fn EVP_CIPHER_CTX_get_iv
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return 1 for success or 0 for failure.
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.Pp
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.Fn EVP_CIPHER_CTX_key_length
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and
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.Fn EVP_CIPHER_key_length
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return the key length.
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.Pp
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.Fn EVP_CIPHER_CTX_iv_length
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and
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.Fn EVP_CIPHER_iv_length
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return the IV length or zero if the cipher does not use an IV.
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.Sh SEE ALSO
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.Xr evp 3 ,
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.Xr EVP_CIPHER_nid 3 ,
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.Xr EVP_EncryptInit 3
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.Sh HISTORY
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.Fn EVP_CIPHER_CTX_key_length ,
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.Fn EVP_CIPHER_key_length ,
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.Fn EVP_CIPHER_CTX_iv_length ,
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and
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.Fn EVP_CIPHER_iv_length
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first appeared in SSLeay 0.6.5 and have been available since
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.Ox 2.4 .
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.Pp
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.Fn EVP_CIPHER_CTX_ctrl
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and
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.Fn EVP_CIPHER_CTX_set_key_length
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first appeared in OpenSSL 0.9.6 and have been available since
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.Ox 2.9 .
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.Pp
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.Fn EVP_CIPHER_CTX_set_padding
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first appeared in OpenSSL 0.9.7 and has been available since
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.Ox 3.2 .
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.Pp
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.Fn EVP_CIPHER_CTX_set_iv
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and
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.Fn EVP_CIPHER_CTX_get_iv
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first appeared in LibreSSL 2.8.1 and have been available since
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.Ox 6.4 .
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.Sh BUGS
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.Dv EVP_MAX_KEY_LENGTH
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and
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.Dv EVP_MAX_IV_LENGTH
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only refer to the internal ciphers with default key lengths.
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If custom ciphers exceed these values, the results are unpredictable.
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This is because it has become standard practice to define a generic key
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as a fixed unsigned char array containing
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.Dv EVP_MAX_KEY_LENGTH
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bytes.
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228
lib/libcrypto/man/EVP_CIPHER_CTX_set_flags.3
Normal file
228
lib/libcrypto/man/EVP_CIPHER_CTX_set_flags.3
Normal file
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@ -0,0 +1,228 @@
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.\" $OpenBSD: EVP_CIPHER_CTX_set_flags.3,v 1.1 2023/08/31 17:27:41 schwarze Exp $
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.\" full merge up to: OpenSSL 5211e094 Nov 11 14:39:11 2014 -0800
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.\"
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||||
.\" This file is a derived work.
|
||||
.\" The changes are covered by the following Copyright and license:
|
||||
.\"
|
||||
.\" Copyright (c) 2019 Ingo Schwarze <schwarze@openbsd.org>
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||||
.\"
|
||||
.\" Permission to use, copy, modify, and distribute this software for any
|
||||
.\" purpose with or without fee is hereby granted, provided that the above
|
||||
.\" copyright notice and this permission notice appear in all copies.
|
||||
.\"
|
||||
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
||||
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
||||
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
||||
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
||||
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
||||
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||
.\"
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||||
.\" The original file was written by Dr. Stephen Henson <steve@openssl.org>
|
||||
.\" and Patrick Steuer <patrick.steuer@de.ibm.com>.
|
||||
.\" Copyright (c) 2000, 2017 The OpenSSL Project.
|
||||
.\" All rights reserved.
|
||||
.\"
|
||||
.\" Redistribution and use in source and binary forms, with or without
|
||||
.\" modification, are permitted provided that the following conditions
|
||||
.\" are met:
|
||||
.\"
|
||||
.\" 1. Redistributions of source code must retain the above copyright
|
||||
.\" notice, this list of conditions and the following disclaimer.
|
||||
.\"
|
||||
.\" 2. Redistributions in binary form must reproduce the above copyright
|
||||
.\" notice, this list of conditions and the following disclaimer in
|
||||
.\" the documentation and/or other materials provided with the
|
||||
.\" distribution.
|
||||
.\"
|
||||
.\" 3. All advertising materials mentioning features or use of this
|
||||
.\" software must display the following acknowledgment:
|
||||
.\" "This product includes software developed by the OpenSSL Project
|
||||
.\" for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
|
||||
.\"
|
||||
.\" 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
||||
.\" endorse or promote products derived from this software without
|
||||
.\" prior written permission. For written permission, please contact
|
||||
.\" openssl-core@openssl.org.
|
||||
.\"
|
||||
.\" 5. Products derived from this software may not be called "OpenSSL"
|
||||
.\" nor may "OpenSSL" appear in their names without prior written
|
||||
.\" permission of the OpenSSL Project.
|
||||
.\"
|
||||
.\" 6. Redistributions of any form whatsoever must retain the following
|
||||
.\" acknowledgment:
|
||||
.\" "This product includes software developed by the OpenSSL Project
|
||||
.\" for use in the OpenSSL Toolkit (http://www.openssl.org/)"
|
||||
.\"
|
||||
.\" THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
||||
.\" EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
|
||||
.\" ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||||
.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||||
.\" OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
.\"
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||||
.Dd $Mdocdate: August 31 2023 $
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.Dt EVP_CIPHER_CTX_SET_FLAGS 3
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.Os
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.Sh NAME
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.Nm EVP_CIPHER_CTX_set_flags ,
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.Nm EVP_CIPHER_CTX_clear_flags ,
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.Nm EVP_CIPHER_CTX_test_flags ,
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.Nm EVP_CIPHER_CTX_rand_key ,
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.Nm EVP_CIPHER_param_to_asn1 ,
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.Nm EVP_CIPHER_asn1_to_param ,
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.Nm EVP_CIPHER_CTX_get_app_data ,
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.Nm EVP_CIPHER_CTX_set_app_data
|
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.Nd unusual EVP cipher context configuration
|
||||
.Sh SYNOPSIS
|
||||
.In openssl/evp.h
|
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.Ft void
|
||||
.Fo EVP_CIPHER_CTX_set_flags
|
||||
.Fa "EVP_CIPHER_CTX *ctx"
|
||||
.Fa "int flags"
|
||||
.Fc
|
||||
.Ft void
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||||
.Fo EVP_CIPHER_CTX_clear_flags
|
||||
.Fa "EVP_CIPHER_CTX *ctx"
|
||||
.Fa "int flags"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_CTX_test_flags
|
||||
.Fa "EVP_CIPHER_CTX *ctx"
|
||||
.Fa "int flags"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_CTX_rand_key
|
||||
.Fa "EVP_CIPHER_CTX *ctx"
|
||||
.Fa "unsigned char *key"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_param_to_asn1
|
||||
.Fa "EVP_CIPHER_CTX *c"
|
||||
.Fa "ASN1_TYPE *type"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_asn1_to_param
|
||||
.Fa "EVP_CIPHER_CTX *c"
|
||||
.Fa "ASN1_TYPE *type"
|
||||
.Fc
|
||||
.Ft void *
|
||||
.Fo EVP_CIPHER_CTX_get_app_data
|
||||
.Fa "const EVP_CIPHER_CTX *ctx"
|
||||
.Fc
|
||||
.Ft void
|
||||
.Fo EVP_CIPHER_CTX_set_app_data
|
||||
.Fa "const EVP_CIPHER_CTX *ctx"
|
||||
.Fa "void *data"
|
||||
.Fc
|
||||
.Sh DESCRIPTION
|
||||
.Fn EVP_CIPHER_CTX_set_flags
|
||||
enables the given
|
||||
.Fa flags
|
||||
in
|
||||
.Fa ctx .
|
||||
.Fn EVP_CIPHER_CTX_clear_flags
|
||||
disables the given
|
||||
.Fa flags
|
||||
in
|
||||
.Fa ctx .
|
||||
.Fn EVP_CIPHER_CTX_test_flags
|
||||
checks whether any of the given
|
||||
.Fa flags
|
||||
are currently set in
|
||||
.Fa ctx ,
|
||||
returning the subset of the
|
||||
.Fa flags
|
||||
that are set, or 0 if none of them are set.
|
||||
Currently, the only supported cipher context flag is
|
||||
.Dv EVP_CIPHER_CTX_FLAG_WRAP_ALLOW ;
|
||||
see
|
||||
.Xr EVP_aes_128_wrap 3
|
||||
for details.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_CTX_rand_key
|
||||
generates a random key of the appropriate length based on the cipher
|
||||
context.
|
||||
The
|
||||
.Vt EVP_CIPHER
|
||||
can provide its own random key generation routine to support keys
|
||||
of a specific form.
|
||||
The
|
||||
.Fa key
|
||||
argument must point to a buffer at least as big as the value returned by
|
||||
.Xr EVP_CIPHER_CTX_key_length 3 .
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_param_to_asn1
|
||||
sets the ASN.1
|
||||
.Vt AlgorithmIdentifier
|
||||
parameter based on the passed cipher.
|
||||
This will typically include any parameters and an IV.
|
||||
The cipher IV (if any) must be set when this call is made.
|
||||
This call should be made before the cipher is actually "used" (before any
|
||||
.Xr EVP_EncryptUpdate 3
|
||||
or
|
||||
.Xr EVP_DecryptUpdate 3
|
||||
calls, for example).
|
||||
This function may fail if the cipher does not have any ASN.1 support.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_asn1_to_param
|
||||
sets the cipher parameters based on an ASN.1
|
||||
.Vt AlgorithmIdentifier
|
||||
parameter.
|
||||
The precise effect depends on the cipher.
|
||||
In the case of RC2, for example, it will set the IV and effective
|
||||
key length.
|
||||
This function should be called after the base cipher type is set but
|
||||
before the key is set.
|
||||
For example
|
||||
.Xr EVP_CipherInit 3
|
||||
will be called with the IV and key set to
|
||||
.Dv NULL ,
|
||||
.Fn EVP_CIPHER_asn1_to_param
|
||||
will be called and finally
|
||||
.Xr EVP_CipherInit 3
|
||||
again with all parameters except the key set to
|
||||
.Dv NULL .
|
||||
It is possible for this function to fail if the cipher does not
|
||||
have any ASN.1 support or the parameters cannot be set (for example
|
||||
the RC2 effective key length is not supported).
|
||||
.Sh RETURN VALUES
|
||||
.Fn EVP_CIPHER_CTX_rand_key
|
||||
return 1 for success or 0 for failure.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_param_to_asn1
|
||||
and
|
||||
.Fn EVP_CIPHER_asn1_to_param
|
||||
return greater than zero for success and zero or a negative number
|
||||
for failure.
|
||||
.Sh SEE ALSO
|
||||
.Xr evp 3 ,
|
||||
.Xr EVP_CIPHER_CTX_ctrl 3 ,
|
||||
.Xr EVP_CIPHER_CTX_get_cipher_data 3 ,
|
||||
.Xr EVP_CIPHER_nid 3 ,
|
||||
.Xr EVP_EncryptInit 3
|
||||
.Sh HISTORY
|
||||
.Fn EVP_CIPHER_CTX_set_app_data
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_get_app_data
|
||||
first appeared in SSLeay 0.8.0.
|
||||
.Fn EVP_CIPHER_param_to_asn1
|
||||
and
|
||||
.Fn EVP_CIPHER_asn1_to_param
|
||||
first appeared in SSLeay 0.9.0.
|
||||
These functions have been available since
|
||||
.Ox 2.4 .
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_CTX_rand_key
|
||||
first appeared in OpenSSL 0.9.8 and has been available since
|
||||
.Ox 4.5 .
|
||||
.Sh BUGS
|
||||
The ASN.1 code is incomplete (and sometimes inaccurate).
|
||||
It has only been tested for certain common S/MIME ciphers
|
||||
(RC2, DES, triple DES) in CBC mode.
|
||||
215
lib/libcrypto/man/EVP_CIPHER_nid.3
Normal file
215
lib/libcrypto/man/EVP_CIPHER_nid.3
Normal file
|
|
@ -0,0 +1,215 @@
|
|||
.\" $OpenBSD: EVP_CIPHER_nid.3,v 1.1 2023/08/31 17:27:41 schwarze Exp $
|
||||
.\" full merge up to: OpenSSL 5211e094 Nov 11 14:39:11 2014 -0800
|
||||
.\"
|
||||
.\" This file is a derived work.
|
||||
.\" The changes are covered by the following Copyright and license:
|
||||
.\"
|
||||
.\" Copyright (c) 2018 Ingo Schwarze <schwarze@openbsd.org>
|
||||
.\"
|
||||
.\" Permission to use, copy, modify, and distribute this software for any
|
||||
.\" purpose with or without fee is hereby granted, provided that the above
|
||||
.\" copyright notice and this permission notice appear in all copies.
|
||||
.\"
|
||||
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
||||
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
||||
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
||||
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
||||
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
||||
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||
.\"
|
||||
.\" The original file was written by Dr. Stephen Henson <steve@openssl.org>.
|
||||
.\" Copyright (c) 2000 The OpenSSL Project. All rights reserved.
|
||||
.\"
|
||||
.\" Redistribution and use in source and binary forms, with or without
|
||||
.\" modification, are permitted provided that the following conditions
|
||||
.\" are met:
|
||||
.\"
|
||||
.\" 1. Redistributions of source code must retain the above copyright
|
||||
.\" notice, this list of conditions and the following disclaimer.
|
||||
.\"
|
||||
.\" 2. Redistributions in binary form must reproduce the above copyright
|
||||
.\" notice, this list of conditions and the following disclaimer in
|
||||
.\" the documentation and/or other materials provided with the
|
||||
.\" distribution.
|
||||
.\"
|
||||
.\" 3. All advertising materials mentioning features or use of this
|
||||
.\" software must display the following acknowledgment:
|
||||
.\" "This product includes software developed by the OpenSSL Project
|
||||
.\" for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
|
||||
.\"
|
||||
.\" 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
||||
.\" endorse or promote products derived from this software without
|
||||
.\" prior written permission. For written permission, please contact
|
||||
.\" openssl-core@openssl.org.
|
||||
.\"
|
||||
.\" 5. Products derived from this software may not be called "OpenSSL"
|
||||
.\" nor may "OpenSSL" appear in their names without prior written
|
||||
.\" permission of the OpenSSL Project.
|
||||
.\"
|
||||
.\" 6. Redistributions of any form whatsoever must retain the following
|
||||
.\" acknowledgment:
|
||||
.\" "This product includes software developed by the OpenSSL Project
|
||||
.\" for use in the OpenSSL Toolkit (http://www.openssl.org/)"
|
||||
.\"
|
||||
.\" THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
||||
.\" EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
|
||||
.\" ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||||
.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||||
.\" OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
.\"
|
||||
.Dd $Mdocdate: August 31 2023 $
|
||||
.Dt EVP_CIPHER_NID 3
|
||||
.Os
|
||||
.Sh NAME
|
||||
.Nm EVP_CIPHER_nid ,
|
||||
.Nm EVP_CIPHER_CTX_nid ,
|
||||
.Nm EVP_CIPHER_type ,
|
||||
.Nm EVP_CIPHER_CTX_type ,
|
||||
.Nm EVP_CIPHER_block_size ,
|
||||
.Nm EVP_CIPHER_CTX_block_size ,
|
||||
.Nm EVP_CIPHER_flags ,
|
||||
.Nm EVP_CIPHER_CTX_flags ,
|
||||
.Nm EVP_CIPHER_mode ,
|
||||
.Nm EVP_CIPHER_CTX_mode
|
||||
.Nd inspect EVP_CIPHER objects
|
||||
.Sh SYNOPSIS
|
||||
.In openssl/evp.h
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_nid
|
||||
.Fa "const EVP_CIPHER *e"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_CTX_nid
|
||||
.Fa "const EVP_CIPHER_CTX *ctx"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_type
|
||||
.Fa "const EVP_CIPHER *ctx"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_CTX_type
|
||||
.Fa "const EVP_CIPHER_CTX *ctx"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_block_size
|
||||
.Fa "const EVP_CIPHER *e"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_CTX_block_size
|
||||
.Fa "const EVP_CIPHER_CTX *ctx"
|
||||
.Fc
|
||||
.Ft unsigned long
|
||||
.Fo EVP_CIPHER_flags
|
||||
.Fa "const EVP_CIPHER *e"
|
||||
.Fc
|
||||
.Ft unsigned long
|
||||
.Fo EVP_CIPHER_CTX_flags
|
||||
.Fa "const EVP_CIPHER_CTX *ctx"
|
||||
.Fc
|
||||
.Ft unsigned long
|
||||
.Fo EVP_CIPHER_mode
|
||||
.Fa "const EVP_CIPHER *e"
|
||||
.Fc
|
||||
.Ft unsigned long
|
||||
.Fo EVP_CIPHER_CTX_mode
|
||||
.Fa "const EVP_CIPHER_CTX *ctx"
|
||||
.Fc
|
||||
.Sh DESCRIPTION
|
||||
.Fn EVP_CIPHER_nid
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_nid
|
||||
return the NID of a cipher when passed an
|
||||
.Vt EVP_CIPHER
|
||||
or
|
||||
.Vt EVP_CIPHER_CTX
|
||||
structure.
|
||||
The actual NID value is an internal value which may not have a
|
||||
corresponding OBJECT IDENTIFIER.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_type
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_type
|
||||
return the type of the passed cipher or context.
|
||||
This "type" is the actual NID of the cipher OBJECT IDENTIFIER as such it
|
||||
ignores the cipher parameters and 40-bit RC2 and 128-bit RC2 have the
|
||||
same NID.
|
||||
If the cipher does not have an object identifier or does not
|
||||
have ASN.1 support, this function will return
|
||||
.Dv NID_undef .
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_block_size
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_block_size
|
||||
return the block size of a cipher when passed an
|
||||
.Vt EVP_CIPHER
|
||||
or
|
||||
.Vt EVP_CIPHER_CTX
|
||||
structure.
|
||||
The constant
|
||||
.Dv EVP_MAX_BLOCK_LENGTH
|
||||
is also the maximum block length for all ciphers.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_mode
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_mode
|
||||
return the block cipher mode:
|
||||
.Dv EVP_CIPH_ECB_MODE ,
|
||||
.Dv EVP_CIPH_CBC_MODE ,
|
||||
.Dv EVP_CIPH_CFB_MODE ,
|
||||
.Dv EVP_CIPH_OFB_MODE ,
|
||||
.Dv EVP_CIPH_CTR_MODE ,
|
||||
or
|
||||
.Dv EVP_CIPH_XTS_MODE .
|
||||
If the cipher is a stream cipher then
|
||||
.Dv EVP_CIPH_STREAM_CIPHER
|
||||
is returned.
|
||||
.Sh RETURN VALUES
|
||||
.Fn EVP_CIPHER_nid
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_nid
|
||||
return a NID.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_type
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_type
|
||||
return the NID of the cipher's OBJECT IDENTIFIER or
|
||||
.Dv NID_undef
|
||||
if it has no defined OBJECT IDENTIFIER.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_block_size
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_block_size
|
||||
return the block size.
|
||||
.Sh SEE ALSO
|
||||
.Xr evp 3 ,
|
||||
.Xr EVP_CIPHER_CTX_ctrl 3 ,
|
||||
.Xr EVP_EncryptInit 3
|
||||
.Sh HISTORY
|
||||
.Fn EVP_CIPHER_type ,
|
||||
.Fn EVP_CIPHER_CTX_type ,
|
||||
.Fn EVP_CIPHER_block_size ,
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_block_size
|
||||
first appeared in SSLeay 0.6.5.
|
||||
.Fn EVP_CIPHER_nid
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_nid
|
||||
first appeared in SSLeay 0.8.0.
|
||||
All these functions have been available since
|
||||
.Ox 2.4 .
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_flags ,
|
||||
.Fn EVP_CIPHER_CTX_flags ,
|
||||
.Fn EVP_CIPHER_mode ,
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_mode
|
||||
first appeared in OpenSSL 0.9.6 and have been available since
|
||||
.Ox 2.9 .
|
||||
|
|
@ -1,4 +1,4 @@
|
|||
.\" $OpenBSD: EVP_EncryptInit.3,v 1.47 2023/08/26 15:01:56 schwarze Exp $
|
||||
.\" $OpenBSD: EVP_EncryptInit.3,v 1.48 2023/08/31 17:27:41 schwarze Exp $
|
||||
.\" full merge up to: OpenSSL 5211e094 Nov 11 14:39:11 2014 -0800
|
||||
.\" EVP_bf_cbc.pod EVP_cast5_cbc.pod EVP_idea_cbc.pod EVP_rc2_cbc.pod
|
||||
.\" 7c6d372a Nov 20 13:20:01 2018 +0000
|
||||
|
|
@ -69,7 +69,7 @@
|
|||
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||||
.\" OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
.\"
|
||||
.Dd $Mdocdate: August 26 2023 $
|
||||
.Dd $Mdocdate: August 31 2023 $
|
||||
.Dt EVP_ENCRYPTINIT 3
|
||||
.Os
|
||||
.Sh NAME
|
||||
|
|
@ -96,37 +96,10 @@
|
|||
.Nm EVP_CipherFinal ,
|
||||
.Nm EVP_Cipher ,
|
||||
.Nm EVP_CIPHER_CTX_encrypting ,
|
||||
.Nm EVP_CIPHER_CTX_set_flags ,
|
||||
.Nm EVP_CIPHER_CTX_clear_flags ,
|
||||
.Nm EVP_CIPHER_CTX_test_flags ,
|
||||
.Nm EVP_CIPHER_CTX_set_padding ,
|
||||
.Nm EVP_CIPHER_CTX_set_key_length ,
|
||||
.Nm EVP_CIPHER_CTX_ctrl ,
|
||||
.Nm EVP_CIPHER_CTX_rand_key ,
|
||||
.Nm EVP_get_cipherbyname ,
|
||||
.Nm EVP_get_cipherbynid ,
|
||||
.Nm EVP_get_cipherbyobj ,
|
||||
.Nm EVP_CIPHER_nid ,
|
||||
.Nm EVP_CIPHER_block_size ,
|
||||
.Nm EVP_CIPHER_key_length ,
|
||||
.Nm EVP_CIPHER_iv_length ,
|
||||
.Nm EVP_CIPHER_flags ,
|
||||
.Nm EVP_CIPHER_mode ,
|
||||
.Nm EVP_CIPHER_type ,
|
||||
.Nm EVP_CIPHER_CTX_cipher ,
|
||||
.Nm EVP_CIPHER_CTX_nid ,
|
||||
.Nm EVP_CIPHER_CTX_block_size ,
|
||||
.Nm EVP_CIPHER_CTX_key_length ,
|
||||
.Nm EVP_CIPHER_CTX_iv_length ,
|
||||
.Nm EVP_CIPHER_CTX_get_iv ,
|
||||
.Nm EVP_CIPHER_CTX_set_iv ,
|
||||
.Nm EVP_CIPHER_CTX_get_app_data ,
|
||||
.Nm EVP_CIPHER_CTX_set_app_data ,
|
||||
.Nm EVP_CIPHER_CTX_type ,
|
||||
.Nm EVP_CIPHER_CTX_flags ,
|
||||
.Nm EVP_CIPHER_CTX_mode ,
|
||||
.Nm EVP_CIPHER_param_to_asn1 ,
|
||||
.Nm EVP_CIPHER_asn1_to_param ,
|
||||
.Nm EVP_enc_null ,
|
||||
.Nm EVP_idea_cbc ,
|
||||
.Nm EVP_idea_ecb ,
|
||||
|
|
@ -294,43 +267,6 @@
|
|||
.Fo EVP_CIPHER_CTX_encrypting
|
||||
.Fa "const EVP_CIPHER_CTX *ctx"
|
||||
.Fc
|
||||
.Ft void
|
||||
.Fo EVP_CIPHER_CTX_set_flags
|
||||
.Fa "EVP_CIPHER_CTX *ctx"
|
||||
.Fa "int flags"
|
||||
.Fc
|
||||
.Ft void
|
||||
.Fo EVP_CIPHER_CTX_clear_flags
|
||||
.Fa "EVP_CIPHER_CTX *ctx"
|
||||
.Fa "int flags"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_CTX_test_flags
|
||||
.Fa "EVP_CIPHER_CTX *ctx"
|
||||
.Fa "int flags"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_CTX_set_padding
|
||||
.Fa "EVP_CIPHER_CTX *x"
|
||||
.Fa "int padding"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_CTX_set_key_length
|
||||
.Fa "EVP_CIPHER_CTX *x"
|
||||
.Fa "int keylen"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_CTX_ctrl
|
||||
.Fa "EVP_CIPHER_CTX *ctx"
|
||||
.Fa "int type"
|
||||
.Fa "int arg"
|
||||
.Fa "void *ptr"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_CTX_rand_key
|
||||
.Fa "EVP_CIPHER_CTX *ctx"
|
||||
.Fa "unsigned char *key"
|
||||
.Fc
|
||||
.Ft const EVP_CIPHER *
|
||||
.Fo EVP_get_cipherbyname
|
||||
.Fa "const char *name"
|
||||
|
|
@ -343,97 +279,10 @@
|
|||
.Fo EVP_get_cipherbyobj
|
||||
.Fa "const ASN1_OBJECT *a"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_nid
|
||||
.Fa "const EVP_CIPHER *e"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_block_size
|
||||
.Fa "const EVP_CIPHER *e"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_key_length
|
||||
.Fa "const EVP_CIPHER *e"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_iv_length
|
||||
.Fa "const EVP_CIPHER *e"
|
||||
.Fc
|
||||
.Ft unsigned long
|
||||
.Fo EVP_CIPHER_flags
|
||||
.Fa "const EVP_CIPHER *e"
|
||||
.Fc
|
||||
.Ft unsigned long
|
||||
.Fo EVP_CIPHER_mode
|
||||
.Fa "const EVP_CIPHER *e"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_type
|
||||
.Fa "const EVP_CIPHER *ctx"
|
||||
.Fc
|
||||
.Ft const EVP_CIPHER *
|
||||
.Fo EVP_CIPHER_CTX_cipher
|
||||
.Fa "const EVP_CIPHER_CTX *ctx"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_CTX_nid
|
||||
.Fa "const EVP_CIPHER_CTX *ctx"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_CTX_block_size
|
||||
.Fa "const EVP_CIPHER_CTX *ctx"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_CTX_key_length
|
||||
.Fa "const EVP_CIPHER_CTX *ctx"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_CTX_iv_length
|
||||
.Fa "const EVP_CIPHER_CTX *ctx"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_CTX_get_iv
|
||||
.Fa "const EVP_CIPHER_CTX *ctx"
|
||||
.Fa "unsigned char *iv"
|
||||
.Fa "size_t len"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_CTX_set_iv
|
||||
.Fa "EVP_CIPHER_CTX *ctx"
|
||||
.Fa "const unsigned char *iv"
|
||||
.Fa "size_t len"
|
||||
.Fc
|
||||
.Ft void *
|
||||
.Fo EVP_CIPHER_CTX_get_app_data
|
||||
.Fa "const EVP_CIPHER_CTX *ctx"
|
||||
.Fc
|
||||
.Ft void
|
||||
.Fo EVP_CIPHER_CTX_set_app_data
|
||||
.Fa "const EVP_CIPHER_CTX *ctx"
|
||||
.Fa "void *data"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_CTX_type
|
||||
.Fa "const EVP_CIPHER_CTX *ctx"
|
||||
.Fc
|
||||
.Ft unsigned long
|
||||
.Fo EVP_CIPHER_CTX_flags
|
||||
.Fa "const EVP_CIPHER_CTX *ctx"
|
||||
.Fc
|
||||
.Ft unsigned long
|
||||
.Fo EVP_CIPHER_CTX_mode
|
||||
.Fa "const EVP_CIPHER_CTX *ctx"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_param_to_asn1
|
||||
.Fa "EVP_CIPHER_CTX *c"
|
||||
.Fa "ASN1_TYPE *type"
|
||||
.Fc
|
||||
.Ft int
|
||||
.Fo EVP_CIPHER_asn1_to_param
|
||||
.Fa "EVP_CIPHER_CTX *c"
|
||||
.Fa "ASN1_TYPE *type"
|
||||
.Fc
|
||||
.Sh DESCRIPTION
|
||||
The EVP cipher routines are a high level interface to certain symmetric
|
||||
ciphers.
|
||||
|
|
@ -492,7 +341,7 @@ and
|
|||
objects used by
|
||||
.Fa in
|
||||
and any application specific data set with
|
||||
.Fn EVP_CIPHER_CTX_set_app_data
|
||||
.Xr EVP_CIPHER_CTX_set_app_data 3
|
||||
are not copied and
|
||||
.Fa out
|
||||
will point to the same three objects.
|
||||
|
|
@ -507,7 +356,7 @@ If the bit
|
|||
.Dv EVP_CIPH_CUSTOM_COPY
|
||||
has been set with
|
||||
.Xr EVP_CIPHER_meth_set_flags 3 ,
|
||||
.Fn EVP_CIPHER_CTX_ctrl
|
||||
.Xr EVP_CIPHER_CTX_ctrl 3
|
||||
is called at the end with arguments
|
||||
.Fa in ,
|
||||
.Dv EVP_CTRL_COPY ,
|
||||
|
|
@ -690,123 +539,6 @@ structure when passed a cipher name, a NID or an
|
|||
.Vt ASN1_OBJECT
|
||||
structure.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_nid
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_nid
|
||||
return the NID of a cipher when passed an
|
||||
.Vt EVP_CIPHER
|
||||
or
|
||||
.Vt EVP_CIPHER_CTX
|
||||
structure.
|
||||
The actual NID value is an internal value which may not have a
|
||||
corresponding OBJECT IDENTIFIER.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_CTX_set_flags
|
||||
enables the given
|
||||
.Fa flags
|
||||
in
|
||||
.Fa ctx .
|
||||
.Fn EVP_CIPHER_CTX_clear_flags
|
||||
disables the given
|
||||
.Fa flags
|
||||
in
|
||||
.Fa ctx .
|
||||
.Fn EVP_CIPHER_CTX_test_flags
|
||||
checks whether any of the given
|
||||
.Fa flags
|
||||
are currently set in
|
||||
.Fa ctx ,
|
||||
returning the subset of the
|
||||
.Fa flags
|
||||
that are set, or 0 if none of them are set.
|
||||
Currently, the only supported cipher context flag is
|
||||
.Dv EVP_CIPHER_CTX_FLAG_WRAP_ALLOW ;
|
||||
see
|
||||
.Xr EVP_aes_128_wrap 3
|
||||
for details.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_CTX_set_padding
|
||||
enables or disables padding.
|
||||
This function should be called after the context is set up for
|
||||
encryption or decryption with
|
||||
.Fn EVP_EncryptInit_ex ,
|
||||
.Fn EVP_DecryptInit_ex ,
|
||||
or
|
||||
.Fn EVP_CipherInit_ex .
|
||||
By default encryption operations are padded using standard block padding
|
||||
and the padding is checked and removed when decrypting.
|
||||
If the
|
||||
.Fa padding
|
||||
parameter is zero, then no padding is performed, the total amount of data
|
||||
encrypted or decrypted must then be a multiple of the block size or an
|
||||
error will occur.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_key_length
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_key_length
|
||||
return the key length of a cipher when passed an
|
||||
.Vt EVP_CIPHER
|
||||
or
|
||||
.Vt EVP_CIPHER_CTX
|
||||
structure.
|
||||
The constant
|
||||
.Dv EVP_MAX_KEY_LENGTH
|
||||
is the maximum key length for all ciphers.
|
||||
Note: although
|
||||
.Fn EVP_CIPHER_key_length
|
||||
is fixed for a given cipher, the value of
|
||||
.Fn EVP_CIPHER_CTX_key_length
|
||||
may be different for variable key length ciphers.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_CTX_set_key_length
|
||||
sets the key length of the cipher ctx.
|
||||
If the cipher is a fixed length cipher, then attempting to set the key
|
||||
length to any value other than the fixed value is an error.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_iv_length
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_iv_length
|
||||
return the IV length of a cipher when passed an
|
||||
.Vt EVP_CIPHER
|
||||
or
|
||||
.Vt EVP_CIPHER_CTX .
|
||||
It will return zero if the cipher does not use an IV.
|
||||
The constant
|
||||
.Dv EVP_MAX_IV_LENGTH
|
||||
is the maximum IV length for all ciphers.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_CTX_get_iv
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_set_iv
|
||||
will respectively retrieve and set the IV for an
|
||||
.Vt EVP_CIPHER_CTX .
|
||||
In both cases, the specified IV length must exactly equal the expected
|
||||
IV length for the context as returned by
|
||||
.Fn EVP_CIPHER_CTX_iv_length .
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_block_size
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_block_size
|
||||
return the block size of a cipher when passed an
|
||||
.Vt EVP_CIPHER
|
||||
or
|
||||
.Vt EVP_CIPHER_CTX
|
||||
structure.
|
||||
The constant
|
||||
.Dv EVP_MAX_BLOCK_LENGTH
|
||||
is also the maximum block length for all ciphers.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_type
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_type
|
||||
return the type of the passed cipher or context.
|
||||
This "type" is the actual NID of the cipher OBJECT IDENTIFIER as such it
|
||||
ignores the cipher parameters and 40-bit RC2 and 128-bit RC2 have the
|
||||
same NID.
|
||||
If the cipher does not have an object identifier or does not
|
||||
have ASN.1 support, this function will return
|
||||
.Dv NID_undef .
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_CTX_cipher
|
||||
returns the
|
||||
.Vt EVP_CIPHER
|
||||
|
|
@ -814,72 +546,6 @@ structure when passed an
|
|||
.Vt EVP_CIPHER_CTX
|
||||
structure.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_mode
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_mode
|
||||
return the block cipher mode:
|
||||
.Dv EVP_CIPH_ECB_MODE ,
|
||||
.Dv EVP_CIPH_CBC_MODE ,
|
||||
.Dv EVP_CIPH_CFB_MODE ,
|
||||
.Dv EVP_CIPH_OFB_MODE ,
|
||||
.Dv EVP_CIPH_CTR_MODE ,
|
||||
or
|
||||
.Dv EVP_CIPH_XTS_MODE .
|
||||
If the cipher is a stream cipher then
|
||||
.Dv EVP_CIPH_STREAM_CIPHER
|
||||
is returned.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_param_to_asn1
|
||||
sets the ASN.1
|
||||
.Vt AlgorithmIdentifier
|
||||
parameter based on the passed cipher.
|
||||
This will typically include any parameters and an IV.
|
||||
The cipher IV (if any) must be set when this call is made.
|
||||
This call should be made before the cipher is actually "used" (before any
|
||||
.Fn EVP_EncryptUpdate
|
||||
or
|
||||
.Fn EVP_DecryptUpdate
|
||||
calls, for example).
|
||||
This function may fail if the cipher does not have any ASN.1 support.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_asn1_to_param
|
||||
sets the cipher parameters based on an ASN.1
|
||||
.Vt AlgorithmIdentifier
|
||||
parameter.
|
||||
The precise effect depends on the cipher.
|
||||
In the case of RC2, for example, it will set the IV and effective
|
||||
key length.
|
||||
This function should be called after the base cipher type is set but
|
||||
before the key is set.
|
||||
For example
|
||||
.Fn EVP_CipherInit
|
||||
will be called with the IV and key set to
|
||||
.Dv NULL ,
|
||||
.Fn EVP_CIPHER_asn1_to_param
|
||||
will be called and finally
|
||||
.Fn EVP_CipherInit
|
||||
again with all parameters except the key set to
|
||||
.Dv NULL .
|
||||
It is possible for this function to fail if the cipher does not
|
||||
have any ASN.1 support or the parameters cannot be set (for example
|
||||
the RC2 effective key length is not supported).
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_CTX_ctrl
|
||||
allows various cipher specific parameters to be determined and set.
|
||||
Currently only the RC2 effective key length can be set.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_CTX_rand_key
|
||||
generates a random key of the appropriate length based on the cipher
|
||||
context.
|
||||
The
|
||||
.Vt EVP_CIPHER
|
||||
can provide its own random key generation routine to support keys
|
||||
of a specific form.
|
||||
The
|
||||
.Fa key
|
||||
argument must point to a buffer at least as big as the value returned by
|
||||
.Fn EVP_CIPHER_CTX_key_length .
|
||||
.Pp
|
||||
Where possible the EVP interface to symmetric ciphers should be
|
||||
used in preference to the low level interfaces.
|
||||
This is because the code then becomes transparent to the cipher used and
|
||||
|
|
@ -938,8 +604,6 @@ for failure.
|
|||
.Fn EVP_CIPHER_CTX_reset ,
|
||||
.Fn EVP_CIPHER_CTX_cleanup ,
|
||||
.Fn EVP_CIPHER_CTX_copy ,
|
||||
.Fn EVP_CIPHER_CTX_get_iv ,
|
||||
.Fn EVP_CIPHER_CTX_set_iv ,
|
||||
.Fn EVP_EncryptInit_ex ,
|
||||
.Fn EVP_EncryptUpdate ,
|
||||
.Fn EVP_EncryptFinal_ex ,
|
||||
|
|
@ -955,10 +619,8 @@ for failure.
|
|||
.Fn EVP_DecryptFinal ,
|
||||
.Fn EVP_CipherInit ,
|
||||
.Fn EVP_CipherFinal ,
|
||||
.Fn EVP_Cipher ,
|
||||
.Fn EVP_CIPHER_CTX_set_key_length ,
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_rand_key
|
||||
.Fn EVP_Cipher
|
||||
return 1 for success or 0 for failure.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_CTX_encrypting
|
||||
|
|
@ -967,18 +629,6 @@ returns 1 if
|
|||
is initialized for encryption or 0 otherwise, in which case
|
||||
it may be uninitialized or initialized for decryption.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_CTX_set_padding
|
||||
always returns 1.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_CTX_ctrl
|
||||
usually returns 1 for success, 0 for failure, or \-1 if the
|
||||
.Fa type
|
||||
is not supported by the
|
||||
.Fa ctx ,
|
||||
but there may be exceptions for some
|
||||
.Fa type
|
||||
arguments.
|
||||
.Pp
|
||||
.Fn EVP_get_cipherbyname ,
|
||||
.Fn EVP_get_cipherbynid ,
|
||||
and
|
||||
|
|
@ -989,43 +639,10 @@ structure or
|
|||
.Dv NULL
|
||||
on error.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_nid
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_nid
|
||||
return a NID.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_block_size
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_block_size
|
||||
return the block size.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_key_length
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_key_length
|
||||
return the key length.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_iv_length
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_iv_length
|
||||
return the IV length or zero if the cipher does not use an IV.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_type
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_type
|
||||
return the NID of the cipher's OBJECT IDENTIFIER or
|
||||
.Dv NID_undef
|
||||
if it has no defined OBJECT IDENTIFIER.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_CTX_cipher
|
||||
returns an
|
||||
.Vt EVP_CIPHER
|
||||
structure.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_param_to_asn1
|
||||
and
|
||||
.Fn EVP_CIPHER_asn1_to_param
|
||||
return greater than zero for success and zero or a negative number
|
||||
for failure.
|
||||
.Sh CIPHER LISTING
|
||||
All algorithms have a fixed key length unless otherwise stated.
|
||||
.Bl -tag -width Ds
|
||||
|
|
@ -1064,9 +681,9 @@ RC2 algorithm in CBC mode with a default key length and effective key
|
|||
length of 40 and 64 bits.
|
||||
These are obsolete and new code should use
|
||||
.Fn EVP_rc2_cbc ,
|
||||
.Fn EVP_CIPHER_CTX_set_key_length ,
|
||||
.Xr EVP_CIPHER_CTX_set_key_length 3 ,
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_ctrl
|
||||
.Xr EVP_CIPHER_CTX_ctrl 3
|
||||
to set the key length and effective key length.
|
||||
.It Xo
|
||||
.Fn EVP_bf_cbc ,
|
||||
|
|
@ -1310,7 +927,10 @@ do_crypt(FILE *in, FILE *out, int do_encrypt)
|
|||
.Xr EVP_aes_128_cbc 3 ,
|
||||
.Xr EVP_camellia_128_cbc 3 ,
|
||||
.Xr EVP_chacha20 3 ,
|
||||
.Xr EVP_CIPHER_CTX_ctrl 3 ,
|
||||
.Xr EVP_CIPHER_CTX_get_cipher_data 3 ,
|
||||
.Xr EVP_CIPHER_CTX_set_flags 3 ,
|
||||
.Xr EVP_CIPHER_nid 3 ,
|
||||
.Xr EVP_des_cbc 3 ,
|
||||
.Xr EVP_OpenInit 3 ,
|
||||
.Xr EVP_rc4 3 ,
|
||||
|
|
@ -1339,16 +959,7 @@ first appeared in SSLeay 0.5.1.
|
|||
and
|
||||
.Fn EVP_rc2_ofb
|
||||
first appeared in SSLeay 0.5.2.
|
||||
.Fn EVP_Cipher ,
|
||||
.Fn EVP_CIPHER_block_size ,
|
||||
.Fn EVP_CIPHER_key_length ,
|
||||
.Fn EVP_CIPHER_iv_length ,
|
||||
.Fn EVP_CIPHER_type ,
|
||||
.Fn EVP_CIPHER_CTX_block_size ,
|
||||
.Fn EVP_CIPHER_CTX_key_length ,
|
||||
.Fn EVP_CIPHER_CTX_iv_length ,
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_type
|
||||
.Fn EVP_Cipher
|
||||
first appeared in SSLeay 0.6.5.
|
||||
.Fn EVP_bf_cbc ,
|
||||
.Fn EVP_bf_ecb ,
|
||||
|
|
@ -1358,20 +969,13 @@ and
|
|||
first appeared in SSLeay 0.6.6.
|
||||
.Fn EVP_CIPHER_CTX_cleanup ,
|
||||
.Fn EVP_get_cipherbyobj ,
|
||||
.Fn EVP_CIPHER_nid ,
|
||||
.Fn EVP_CIPHER_CTX_cipher ,
|
||||
.Fn EVP_CIPHER_CTX_nid ,
|
||||
.Fn EVP_CIPHER_CTX_get_app_data ,
|
||||
.Fn EVP_CIPHER_CTX_set_app_data ,
|
||||
and
|
||||
.Fn EVP_enc_null
|
||||
first appeared in SSLeay 0.8.0.
|
||||
.Fn EVP_get_cipherbynid
|
||||
first appeared in SSLeay 0.8.1.
|
||||
.Fn EVP_CIPHER_CTX_init ,
|
||||
.Fn EVP_CIPHER_param_to_asn1 ,
|
||||
and
|
||||
.Fn EVP_CIPHER_asn1_to_param
|
||||
.Fn EVP_CIPHER_CTX_init
|
||||
first appeared in SSLeay 0.9.0.
|
||||
All these functions have been available since
|
||||
.Ox 2.4 .
|
||||
|
|
@ -1379,30 +983,16 @@ All these functions have been available since
|
|||
.Fn EVP_rc2_40_cbc
|
||||
and
|
||||
.Fn EVP_rc2_64_cbc
|
||||
first appeared in SSL_eay 0.9.1.
|
||||
.Fn EVP_CIPHER_CTX_type
|
||||
first appeared in OpenSSL 0.9.3.
|
||||
These functions have been available since
|
||||
first appeared in SSLeay 0.9.1 and have been available since
|
||||
.Ox 2.6 .
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_CTX_set_key_length ,
|
||||
.Fn EVP_CIPHER_CTX_ctrl ,
|
||||
.Fn EVP_CIPHER_flags ,
|
||||
.Fn EVP_CIPHER_mode ,
|
||||
.Fn EVP_CIPHER_CTX_flags ,
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_mode
|
||||
first appeared in OpenSSL 0.9.6 and have been available since
|
||||
.Ox 2.9 .
|
||||
.Pp
|
||||
.Fn EVP_EncryptInit_ex ,
|
||||
.Fn EVP_EncryptFinal_ex ,
|
||||
.Fn EVP_DecryptInit_ex ,
|
||||
.Fn EVP_DecryptFinal_ex ,
|
||||
.Fn EVP_CipherInit_ex ,
|
||||
.Fn EVP_CipherFinal_ex ,
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_set_padding
|
||||
.Fn EVP_CipherFinal_ex
|
||||
first appeared in OpenSSL 0.9.7 and have been available since
|
||||
.Ox 3.2 .
|
||||
.Pp
|
||||
|
|
@ -1414,13 +1004,10 @@ and
|
|||
first appeared in OpenSSL 0.9.7e and have been available since
|
||||
.Ox 3.8 .
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_CTX_rand_key
|
||||
first appeared in OpenSSL 0.9.8.
|
||||
.Fn EVP_CIPHER_CTX_new
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_free
|
||||
first appeared in OpenSSL 0.9.8b.
|
||||
These functions have been available since
|
||||
first appeared in OpenSSL 0.9.8b and have been available since
|
||||
.Ox 4.5 .
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_CTX_copy
|
||||
|
|
@ -1435,27 +1022,7 @@ first appeared in OpenSSL 1.1.0 and has been available since
|
|||
.Fn EVP_CIPHER_CTX_encrypting
|
||||
first appeared in OpenSSL 1.1.0 and has been available since
|
||||
.Ox 6.4 .
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_CTX_get_iv
|
||||
and
|
||||
.Fn EVP_CIPHER_CTX_set_iv
|
||||
first appeared in LibreSSL 2.8.1 and have been available since
|
||||
.Ox 6.4 .
|
||||
.Sh BUGS
|
||||
.Dv EVP_MAX_KEY_LENGTH
|
||||
and
|
||||
.Dv EVP_MAX_IV_LENGTH
|
||||
only refer to the internal ciphers with default key lengths.
|
||||
If custom ciphers exceed these values, the results are unpredictable.
|
||||
This is because it has become standard practice to define a generic key
|
||||
as a fixed unsigned char array containing
|
||||
.Dv EVP_MAX_KEY_LENGTH
|
||||
bytes.
|
||||
.Pp
|
||||
The ASN.1 code is incomplete (and sometimes inaccurate).
|
||||
It has only been tested for certain common S/MIME ciphers
|
||||
(RC2, DES, triple DES) in CBC mode.
|
||||
.Pp
|
||||
.Fn EVP_CIPHER_CTX_copy
|
||||
may already have cleared the data in
|
||||
.Fa out
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
# $OpenBSD: Makefile,v 1.265 2023/08/30 00:58:57 tb Exp $
|
||||
# $OpenBSD: Makefile,v 1.266 2023/08/31 17:27:41 schwarze Exp $
|
||||
|
||||
.include <bsd.own.mk>
|
||||
|
||||
|
|
@ -164,9 +164,12 @@ MAN= \
|
|||
ESS_SIGNING_CERT_new.3 \
|
||||
EVP_AEAD_CTX_init.3 \
|
||||
EVP_BytesToKey.3 \
|
||||
EVP_CIPHER_CTX_ctrl.3 \
|
||||
EVP_CIPHER_CTX_get_cipher_data.3 \
|
||||
EVP_CIPHER_CTX_set_flags.3 \
|
||||
EVP_CIPHER_do_all.3 \
|
||||
EVP_CIPHER_meth_new.3 \
|
||||
EVP_CIPHER_nid.3 \
|
||||
EVP_DigestInit.3 \
|
||||
EVP_DigestSignInit.3 \
|
||||
EVP_DigestVerifyInit.3 \
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
.\" $OpenBSD: evp.3,v 1.21 2023/08/30 00:58:57 tb Exp $
|
||||
.\" $OpenBSD: evp.3,v 1.22 2023/08/31 17:27:41 schwarze Exp $
|
||||
.\" full merge up to: OpenSSL man7/evp 24a535ea Sep 22 13:14:20 2020 +0100
|
||||
.\"
|
||||
.\" This file was written by Ulf Moeller <ulf@openssl.org>,
|
||||
|
|
@ -51,7 +51,7 @@
|
|||
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||||
.\" OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
.\"
|
||||
.Dd $Mdocdate: August 30 2023 $
|
||||
.Dd $Mdocdate: August 31 2023 $
|
||||
.Dt EVP 3
|
||||
.Os
|
||||
.Sh NAME
|
||||
|
|
@ -199,9 +199,12 @@ operations are more efficient using the high-level interfaces.
|
|||
.Xr EVP_BytesToKey 3 ,
|
||||
.Xr EVP_camellia_128_cbc 3 ,
|
||||
.Xr EVP_chacha20 3 ,
|
||||
.Xr EVP_CIPHER_CTX_ctrl 3 ,
|
||||
.Xr EVP_CIPHER_CTX_get_cipher_data 3 ,
|
||||
.Xr EVP_CIPHER_CTX_set_flags 3 ,
|
||||
.Xr EVP_CIPHER_do_all 3 ,
|
||||
.Xr EVP_CIPHER_meth_new 3 ,
|
||||
.Xr EVP_CIPHER_nid 3 ,
|
||||
.Xr EVP_des_cbc 3 ,
|
||||
.Xr EVP_DigestInit 3 ,
|
||||
.Xr EVP_DigestSignInit 3 ,
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue