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Title "OPENSSL-RAND 1ossl"
OPENSSL-RAND 1ossl "2023-09-22" "3.0.11" "OpenSSL"
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"NAME"
openssl-rand - generate pseudo-random bytes
"SYNOPSIS"
Header "SYNOPSIS" \fBopenssl rand [-help] [-out file] [-base64] [-hex] [-engine id] [-rand files] [-writerand file] [-provider name] [-provider-path path] [-propquery propq] \fInum
"DESCRIPTION"
Header "DESCRIPTION" This command generates num random bytes using a cryptographically secure pseudo random number generator (\s-1CSPRNG\s0).

The random bytes are generated using the RAND_bytes\|(3) function, which provides a security level of 256 bits, provided it managed to seed itself successfully from a trusted operating system entropy source. Otherwise, the command will fail with a nonzero error code. For more details, see RAND_bytes\|(3), \s-1RAND\s0\|(7), and \s-1EVP_RAND\s0\|(7).

"OPTIONS"
Header "OPTIONS"
"-help" 4
Item "-help" Print out a usage message.
"-out file" 4
Item "-out file" Write to file instead of standard output.
"-base64" 4
Item "-base64" Perform base64 encoding on the output.
"-hex" 4
Item "-hex" Show the output as a hex string.
"-engine id" 4
Item "-engine id" See \*(L"Engine Options\*(R" in openssl\|(1). This option is deprecated.
"-rand files, -writerand file" 4
Item "-rand files, -writerand file" See \*(L"Random State Options\*(R" in openssl\|(1) for details.
"-provider name" 4
Item "-provider name"

0

"-provider-path path" 4
Item "-provider-path path"
"-propquery propq" 4
Item "-propquery propq"

See \*(L"Provider Options\*(R" in openssl\|(1), provider\|(7), and property\|(7).

"SEE ALSO"
Header "SEE ALSO" \fBopenssl\|(1), \fBRAND_bytes\|(3), \s-1RAND\s0\|(7), \s-1EVP_RAND\s0\|(7)
"HISTORY"
Header "HISTORY" The -engine option was deprecated in OpenSSL 3.0.
"COPYRIGHT"
Header "COPYRIGHT" Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved.

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>.