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.\" ========================================================================
.\"
.IX Title "OPENSSL-SPEED 1ossl"
.TH OPENSSL-SPEED 1ossl "2025-09-30" "3.5.4" "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 \- test library performance
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\fBopenssl speed\fR
[\fB\-help\fR]
[\fB\-config\fR \fIfilename\fR]
[\fB\-elapsed\fR]
[\fB\-evp\fR \fIalgo\fR]
[\fB\-hmac\fR \fIalgo\fR]
[\fB\-cmac\fR \fIalgo\fR]
[\fB\-mb\fR]
[\fB\-aead\fR]
[\fB\-kem\-algorithms\fR]
[\fB\-signature\-algorithms\fR]
[\fB\-multi\fR \fInum\fR]
[\fB\-async_jobs\fR \fInum\fR]
[\fB\-misalign\fR \fInum\fR]
[\fB\-decrypt\fR]
[\fB\-primes\fR \fInum\fR]
[\fB\-seconds\fR \fInum\fR]
[\fB\-bytes\fR \fInum\fR]
[\fB\-mr\fR]
[\fB\-mlock\fR]
[\fB\-testmode\fR]
[\fB\-rand\fR \fIfiles\fR]
[\fB\-writerand\fR \fIfile\fR]
[\fB\-engine\fR \fIid\fR]
[\fB\-provider\fR \fIname\fR]
[\fB\-provider\-path\fR \fIpath\fR]
[\fB\-provparam\fR \fI[name:]key=value\fR]
[\fB\-propquery\fR \fIpropq\fR]
[\fIalgorithm\fR ...]
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This command is used to test the performance of cryptographic algorithms.
.SH "OPTIONS"
.IX Header "OPTIONS"
.IP "\fB\-help\fR" 4
.IX Item "-help"
Print out a usage message.
.IP "\fB\-config\fR \fIfilename\fR" 4
.IX Item "-config filename"
Specifies the configuration file to use.
Optional; for a description of the default value,
see \*(L"\s-1COMMAND SUMMARY\*(R"\s0 in \fBopenssl\fR\|(1).
.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\fR \fIalgo\fR" 4
.IX Item "-evp algo"
Use the specified cipher or message digest algorithm via the \s-1EVP\s0 interface.
If \fIalgo\fR is an \s-1AEAD\s0 cipher, then you can pass \fB\-aead\fR to benchmark a
TLS-like sequence. And if \fIalgo\fR is a multi-buffer capable cipher, e.g.
aes\-128\-cbc\-hmac\-sha1, then \fB\-mb\fR will time multi-buffer operation.
.Sp
To see the algorithms supported with this option, use
\&\f(CW\*(C`openssl list \-digest\-algorithms\*(C'\fR or \f(CW\*(C`openssl list \-cipher\-algorithms\*(C'\fR
command.
.IP "\fB\-multi\fR \fInum\fR" 4
.IX Item "-multi num"
Run multiple operations in parallel.
.IP "\fB\-async_jobs\fR \fInum\fR" 4
.IX Item "-async_jobs num"
Enable async mode and start specified number of jobs.
.IP "\fB\-misalign\fR \fInum\fR" 4
.IX Item "-misalign num"
Misalign the buffers by the specified number of bytes.
.IP "\fB\-hmac\fR \fIdigest\fR" 4
.IX Item "-hmac digest"
Time the \s-1HMAC\s0 algorithm using the specified message digest.
.IP "\fB\-cmac\fR \fIcipher\fR" 4
.IX Item "-cmac cipher"
Time the \s-1CMAC\s0 algorithm using the specified cipher e.g.
\&\f(CW\*(C`openssl speed \-cmac aes128\*(C'\fR.
.IP "\fB\-decrypt\fR" 4
.IX Item "-decrypt"
Time the decryption instead of encryption. Affects only the \s-1EVP\s0 testing.
.IP "\fB\-mb\fR" 4
.IX Item "-mb"
Enable multi-block mode on EVP-named cipher.
.IP "\fB\-aead\fR" 4
.IX Item "-aead"
Benchmark EVP-named \s-1AEAD\s0 cipher in TLS-like sequence.
.IP "\fB\-kem\-algorithms\fR" 4
.IX Item "-kem-algorithms"
Benchmark \s-1KEM\s0 algorithms: key generation, encapsulation, decapsulation.
.IP "\fB\-signature\-algorithms\fR" 4
.IX Item "-signature-algorithms"
Benchmark signature algorithms: key generation, signature, verification.
.IP "\fB\-primes\fR \fInum\fR" 4
.IX Item "-primes num"
Generate a \fInum\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\fR \fInum\fR" 4
.IX Item "-seconds num"
Run benchmarks for \fInum\fR seconds.
.IP "\fB\-bytes\fR \fInum\fR" 4
.IX Item "-bytes num"
Run benchmarks on \fInum\fR\-byte buffers. Affects ciphers, digests and the \s-1CSPRNG.\s0
The limit on the size of the buffer is \s-1INT_MAX\s0 \- 64 bytes, which for a 32\-bit
int would be 2147483583 bytes.
.IP "\fB\-mr\fR" 4
.IX Item "-mr"
Produce the summary in a mechanical, machine-readable, format.
.IP "\fB\-mlock\fR" 4
.IX Item "-mlock"
Lock memory into \s-1RAM\s0 for more deterministic measurements.
.IP "\fB\-testmode\fR" 4
.IX Item "-testmode"
Runs the speed command in testmode. Runs only 1 iteration of each algorithm test
regardless of any \fB\-seconds\fR value. In the event that any operation fails then
the speed command will return with a failure result.
.IP "\fB\-rand\fR \fIfiles\fR, \fB\-writerand\fR \fIfile\fR" 4
.IX Item "-rand files, -writerand file"
See \*(L"Random State Options\*(R" in \fBopenssl\fR\|(1) for details.
.IP "\fB\-engine\fR \fIid\fR" 4
.IX Item "-engine id"
See \*(L"Engine Options\*(R" in \fBopenssl\fR\|(1).
This option is deprecated.
.IP "\fB\-provider\fR \fIname\fR" 4
.IX Item "-provider name"
.PD 0
.IP "\fB\-provider\-path\fR \fIpath\fR" 4
.IX Item "-provider-path path"
.IP "\fB\-provparam\fR \fI[name:]key=value\fR" 4
.IX Item "-provparam [name:]key=value"
.IP "\fB\-propquery\fR \fIpropq\fR" 4
.IX Item "-propquery propq"
.PD
See \*(L"Provider Options\*(R" in \fBopenssl\fR\|(1), \fBprovider\fR\|(7), and \fBproperty\fR\|(7).
.IP "\fIalgorithm\fR ..." 4
.IX Item "algorithm ..."
If any \fIalgorithm\fR is given, then those algorithms are tested, otherwise a
pre-compiled grand selection is tested.
.SH "BUGS"
.IX Header "BUGS"
The \fIalgorithm\fR can be selected only from a pre-compiled subset of things
that the \f(CW\*(C`openssl speed\*(C'\fR command knows about. To test any additional digest
or cipher algorithm supported by OpenSSL use the \f(CW\*(C`\-evp\*(C'\fR option.
.PP
There is no way to test the speed of any additional public key algorithms
supported by third party providers with the \f(CW\*(C`openssl speed\*(C'\fR command.
.SH "HISTORY"
.IX Header "HISTORY"
The \fB\-engine\fR option was deprecated in OpenSSL 3.0.
.PP
\&\s-1DSA512\s0 was removed in OpenSSL 3.2.
.PP
The \fB\-testmode\fR option was added in OpenSSL 3.4.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2000\-2024 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the Apache License 2.0 (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>.
