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132 .TH SPEED 1 "2018-09-11" "1.1.1" "OpenSSL"
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134 .\" way too many mistakes in technical documents.
138 openssl\-speed, speed \- test library performance
140 .IX Header "SYNOPSIS"
141 \&\fBopenssl speed\fR
147 [\fB\-rand file...\fR]
148 [\fB\-writerand file\fR]
150 [\fB\-seconds num\fR]
154 .IX Header "DESCRIPTION"
155 This command is used to test the performance of cryptographic algorithms.
156 To see the list of supported algorithms, use the \fIlist \-\-digest\-commands\fR
157 or \fIlist \-\-cipher\-commands\fR command. The global \s-1CSPRNG\s0 is denoted by
158 the \fIrand\fR algorithm name.
163 Print out a usage message.
164 .IP "\fB\-engine id\fR" 4
165 .IX Item "-engine id"
166 Specifying an engine (by its unique \fBid\fR string) will cause \fBspeed\fR
167 to attempt to obtain a functional reference to the specified engine,
168 thus initialising it if needed. The engine will then be set as the default
169 for all available algorithms.
170 .IP "\fB\-elapsed\fR" 4
172 When calculating operations\- or bytes-per-second, use wall-clock time
173 instead of \s-1CPU\s0 user time as divisor. It can be useful when testing speed
175 .IP "\fB\-evp algo\fR" 4
177 Use the specified cipher or message digest algorithm via the \s-1EVP\s0 interface.
178 If \fBalgo\fR is an \s-1AEAD\s0 cipher, then you can pass <\-aead> to benchmark a
179 TLS-like sequence. And if \fBalgo\fR is a multi-buffer capable cipher, e.g.
180 aes\-128\-cbc\-hmac\-sha1, then \fB\-mb\fR will time multi-buffer operation.
181 .IP "\fB\-decrypt\fR" 4
183 Time the decryption instead of encryption. Affects only the \s-1EVP\s0 testing.
184 .IP "\fB\-rand file...\fR" 4
185 .IX Item "-rand file..."
186 A file or files containing random data used to seed the random number
188 Multiple files can be specified separated by an OS-dependent character.
189 The separator is \fB;\fR for MS-Windows, \fB,\fR for OpenVMS, and \fB:\fR for
191 .IP "[\fB\-writerand file\fR]" 4
192 .IX Item "[-writerand file]"
193 Writes random data to the specified \fIfile\fR upon exit.
194 This can be used with a subsequent \fB\-rand\fR flag.
195 .IP "\fB\-primes num\fR" 4
196 .IX Item "-primes num"
197 Generate a \fBnum\fR\-prime \s-1RSA\s0 key and use it to run the benchmarks. This option
198 is only effective if \s-1RSA\s0 algorithm is specified to test.
199 .IP "\fB\-seconds num\fR" 4
200 .IX Item "-seconds num"
201 Run benchmarks for \fBnum\fR seconds.
202 .IP "\fB\-bytes num\fR" 4
203 .IX Item "-bytes num"
204 Run benchmarks on \fBnum\fR\-byte buffers. Affects ciphers, digests and the \s-1CSPRNG.\s0
205 .IP "\fB[zero or more test algorithms]\fR" 4
206 .IX Item "[zero or more test algorithms]"
207 If any options are given, \fBspeed\fR tests those algorithms, otherwise a
208 pre-compiled grand selection is tested.
210 .IX Header "COPYRIGHT"
211 Copyright 2000\-2018 The OpenSSL Project Authors. All Rights Reserved.
213 Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use
214 this file except in compliance with the License. You can obtain a copy
215 in the file \s-1LICENSE\s0 in the source distribution or at
216 <https://www.openssl.org/source/license.html>.