openssl-speed, speed - test library performance
] [ -engine id
] [ -elapsed
] [ -decrypt
] [ -rand file...
] [ -writerand
] [ -primes num
] [ -seconds num
] [ -bytes num
This command is used to test the performance of cryptographic algorithms. To see
the list of supported algorithms, use the list --digest-commands
command. The global CSPRNG is denoted by the
- Print out a usage message.
- -engine id
- Specifying an engine (by its unique id string) will
cause speed 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.
- When calculating operations- or bytes-per-second, use
wall-clock time instead of CPU user time as divisor. It can be useful when
testing speed of hardware engines.
- -evp algo
- Use the specified cipher or message digest algorithm via
the EVP interface. If algo is an AEAD cipher, then you can pass
<-aead> to benchmark a TLS-like sequence. And if algo is a
multi-buffer capable cipher, e.g. aes-128-cbc-hmac-sha1, then -mb
will time multi-buffer operation.
- Time the decryption instead of encryption. Affects only the
- -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 ; for MS-Windows, ,
for OpenVMS, and : for all others.
- [-writerand file]
- Writes random data to the specified file upon exit.
This can be used with a subsequent -rand flag.
- -primes num
- Generate a num-prime RSA key and use it to run the
benchmarks. This option is only effective if RSA algorithm is specified to
- -seconds num
- Run benchmarks for num seconds.
- -bytes num
- Run benchmarks on num-byte buffers. Affects ciphers,
digests and the CSPRNG.
- [zero or more test algorithms]
- If any options are given, speed tests those
algorithms, otherwise a pre-compiled grand selection is tested.
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Licensed under the OpenSSL license (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