Home | History | Annotate | Line # | Download | only in man 
 $NetBSD: EVP_MAC-Siphash.7,v 1.5 2026/04/08 17:06:43 christos Exp $

 -*- mode: troff; coding: utf-8 -*-
 Automatically generated by Pod::Man v6.0.2 (Pod::Simple 3.45)

 Standard preamble:
 ========================================================================
..

..


..
 \*(C` and \*(C' are quotes in nroff, nothing in troff, for use with C<>.
. ds C` ""
. ds C' ""
'br\}
. ds C`
. ds C'
'br\}

 Escape single quotes in literal strings from groff's Unicode transform.

 If the F register is >0, we'll generate index entries on stderr for
 titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
 entries marked with X<> in POD. Of course, you'll have to process the
 output yourself in some meaningful fashion.

 Avoid warning from groff about undefined register 'F'.
..
.nr rF 0
. if \nF \{\
. de IX
. tm Index:\\$1\t\\n%\t"\\$2"
..
. if !\nF==2 \{\
. nr % 0
. nr F 2
. \}
. \}
.\}
.rr rF

 Required to disable full justification in groff 1.23.0.
 ========================================================================

 Title "EVP_MAC-SIPHASH 7" 
 EVP_MAC-SIPHASH 7 2026-04-07 3.5.6 OpenSSL
 For nroff, turn off justification. Always turn off hyphenation; it makes
 way too many mistakes in technical documents.
.nh

 NAME
EVP_MAC-Siphash - The Siphash EVP_MAC implementation

 DESCRIPTION
 Header "DESCRIPTION" Support for computing Siphash MACs through the EVP_MAC API.

 Identity
 Subsection "Identity" This implementation is identified with this name and properties, to be
used with EVP_MAC_fetch():

 """SIPHASH"", ""provider=default""" 4
 Item """SIPHASH"", ""provider=default""" 
 "Supported parameters"
 Subsection "Supported parameters" The general description of these parameters can be found in
"PARAMETERS" in EVP_MAC\|(3).


All these parameters can be set with EVP_MAC_CTX_set_params().
Furthermore, the "size" parameter can be retrieved with
\fBEVP_MAC_CTX_get_params(), or with EVP_MAC_CTX_get_mac_size().
The length of the "size" parameter should not exceed that of a size_t.

 """key"" (OSSL_MAC_PARAM_KEY) <octet string>" 4
 Item """key"" (OSSL_MAC_PARAM_KEY) <octet string>" Sets the MAC key.
Setting this parameter is identical to passing a key to EVP_MAC_init\|(3).

 """size"" (OSSL_MAC_PARAM_SIZE) <unsigned integer>" 4
 Item """size"" (OSSL_MAC_PARAM_SIZE) <unsigned integer>" Sets the MAC size.

 """c-rounds"" (OSSL_MAC_PARAM_C_ROUNDS) <unsigned integer>" 4
 Item """c-rounds"" (OSSL_MAC_PARAM_C_ROUNDS) <unsigned integer>" Specifies the number of rounds per message block. By default this is 2.

 """d-rounds"" (OSSL_MAC_PARAM_D_ROUNDS) <unsigned integer>" 4
 Item """d-rounds"" (OSSL_MAC_PARAM_D_ROUNDS) <unsigned integer>" Specifies the number of finalisation rounds. By default this is 4.

 "SEE ALSO"
 Header "SEE ALSO" \fBEVP_MAC_CTX_get_params\|(3), EVP_MAC_CTX_set_params\|(3),
"PARAMETERS" in EVP_MAC\|(3), OSSL_PARAM\|(3)

 COPYRIGHT
 Header "COPYRIGHT" Copyright 2018-2021 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>.