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//opt/alt/openssl11/share/man/man1/speed.1ssl

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.\" ========================================================================
.\"
.IX Title "SPEED 1"
.TH SPEED 1 "2022-06-21" "1.1.1p" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
openssl\-speed, speed \- test library performance
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\fBopenssl speed\fR
[\fB\-help\fR]
[\fB\-engine id\fR]
[\fB\-elapsed\fR]
[\fB\-evp algo\fR]
[\fB\-decrypt\fR]
[\fB\-rand file...\fR]
[\fB\-writerand file\fR]
[\fB\-primes num\fR]
[\fB\-seconds num\fR]
[\fB\-bytes num\fR]
[\fBalgorithm...\fR]
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This command is used to test the performance of cryptographic algorithms.
To see the list of supported algorithms, use the \fIlist \-\-digest\-commands\fR
or \fIlist \-\-cipher\-commands\fR command. The global \s-1CSPRNG\s0 is denoted by
the \fIrand\fR algorithm name.
.SH "OPTIONS"
.IX Header "OPTIONS"
.IP "\fB\-help\fR" 4
.IX Item "-help"
Print out a usage message.
.IP "\fB\-engine id\fR" 4
.IX Item "-engine id"
Specifying an engine (by its unique \fBid\fR string) will cause \fBspeed\fR
to attempt to obtain a functional reference to the specified engine,
thus initialising it if needed. The engine will then be set as the default
for all available algorithms.
.IP "\fB\-elapsed\fR" 4
.IX Item "-elapsed"
When calculating operations\- or bytes-per-second, use wall-clock time
instead of \s-1CPU\s0 user time as divisor. It can be useful when testing speed
of hardware engines.
.IP "\fB\-evp algo\fR" 4
.IX Item "-evp algo"
Use the specified cipher or message digest algorithm via the \s-1EVP\s0 interface.
If \fBalgo\fR is an \s-1AEAD\s0 cipher, then you can pass <\-aead> to benchmark a
TLS-like sequence. And if \fBalgo\fR is a multi-buffer capable cipher, e.g.
aes\-128\-cbc\-hmac\-sha1, then \fB\-mb\fR will time multi-buffer operation.
.IP "\fB\-decrypt\fR" 4
.IX Item "-decrypt"
Time the decryption instead of encryption. Affects only the \s-1EVP\s0 testing.
.IP "\fB\-rand file...\fR" 4
.IX Item "-rand file..."
A file or files containing random data used to seed the random number
generator.
Multiple files can be specified separated by an OS-dependent character.
The separator is \fB;\fR for MS-Windows, \fB,\fR for OpenVMS, and \fB:\fR for
all others.
.IP "[\fB\-writerand file\fR]" 4
.IX Item "[-writerand file]"
Writes random data to the specified \fIfile\fR upon exit.
This can be used with a subsequent \fB\-rand\fR flag.
.IP "\fB\-primes num\fR" 4
.IX Item "-primes num"
Generate a \fBnum\fR\-prime \s-1RSA\s0 key and use it to run the benchmarks. This option
is only effective if \s-1RSA\s0 algorithm is specified to test.
.IP "\fB\-seconds num\fR" 4
.IX Item "-seconds num"
Run benchmarks for \fBnum\fR seconds.
.IP "\fB\-bytes num\fR" 4
.IX Item "-bytes num"
Run benchmarks on \fBnum\fR\-byte buffers. Affects ciphers, digests and the \s-1CSPRNG.\s0
.IP "\fB[zero or more test algorithms]\fR" 4
.IX Item "[zero or more test algorithms]"
If any options are given, \fBspeed\fR tests those algorithms, otherwise a
pre-compiled grand selection is tested.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2000\-2018 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>.