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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>.