$NetBSD: openssl-genrsa.1,v 1.1 2024/07/12 21:01:08 christos Exp $
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Title "OPENSSL-GENRSA 1"
way too many mistakes in technical documents.
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Automatically generated by Pod::Man 5.01 (Pod::Simple 3.43)
Standard preamble:
========================================================================
..
.... \*(C` and \*(C' are quotes in nroff, nothing in troff, for use with C<>.
. ds C` "" . ds C' "" 'br\} . ds C` . ds C' 'br\}
Escape single quotes in literal strings from groff's Unicode transform.
If the F register is >0, we'll generate index entries on stderr for
titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
entries marked with X<> in POD. Of course, you'll have to process the
output yourself in some meaningful fashion.
Avoid warning from groff about undefined register 'F'.
.. .nr rF 0 . if \nF \{\ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . if !\nF==2 \{\ . nr % 0 . nr F 2 . \} . \} .\} .rr rF ========================================================================
Title "OPENSSL-GENRSA 1"
OPENSSL-GENRSA 1 2024-07-11 3.0.14 OpenSSL
For nroff, turn off justification. Always turn off hyphenation; it makesway too many mistakes in technical documents.
NAME
openssl-genrsa - generate an RSA private key
SYNOPSIS
Header "SYNOPSIS" \fBopenssl genrsa
[-help]
[-out filename]
[-passout arg]
[-aes128]
[-aes192]
[-aes256]
[-aria128]
[-aria192]
[-aria256]
[-camellia128]
[-camellia192]
[-camellia256]
[-des]
[-des3]
[-idea]
[-F4]
[-f4]
[-3]
[-primes num]
[-verbose]
[-traditional]
[-rand files]
[-writerand file]
[-engine id]
[-provider name]
[-provider-path path]
[-propquery propq]
[numbits]
DESCRIPTION
Header "DESCRIPTION" This command generates an RSA private key.
OPTIONS
Header "OPTIONS" -help 4
Item "-help" Print out a usage message.
"-out filename" 4
Item "-out filename" Output the key to the specified file. If this argument is not specified then
standard output is used.
"-passout arg" 4
Item "-passout arg" The output file password source. For more information about the format
see openssl-passphrase-options\|(1).
"-aes128, -aes192, -aes256, -aria128, -aria192, -aria256, -camellia128, -camellia192, -camellia256, -des, -des3, -idea" 4
Item "-aes128, -aes192, -aes256, -aria128, -aria192, -aria256, -camellia128, -camellia192, -camellia256, -des, -des3, -idea" These options encrypt the private key with specified
cipher before outputting it. If none of these options is
specified no encryption is used. If encryption is used a pass phrase is prompted
for if it is not supplied via the -passout argument.
"-F4, -f4, -3" 4
Item "-F4, -f4, -3" The public exponent to use, either 65537 or 3. The default is 65537.
The -3 option has been deprecated.
"-primes num" 4
Item "-primes num" Specify the number of primes to use while generating the RSA key. The num
parameter must be a positive integer that is greater than 1 and less than 16.
If num is greater than 2, then the generated key is called a 'multi-prime'
RSA key, which is defined in RFC 8017.
-verbose 4
Item "-verbose" Print extra details about the operations being performed.
-traditional 4
Item "-traditional" Write the key using the traditional PKCS#1 format instead of the PKCS#8 format.
"-rand files, -writerand file" 4
Item "-rand files, -writerand file" See "Random State Options" in openssl\|(1) for details.
"-engine id" 4
Item "-engine id" See "Engine Options" in openssl\|(1).
This option is deprecated.
"-provider name" 4
Item "-provider name" 0
"-provider-path path" 4
Item "-provider-path path" "-propquery propq" 4
Item "-propquery propq" See "Provider Options" in openssl\|(1), provider\|(7), and property\|(7).
numbits 4
Item "numbits" The size of the private key to generate in bits. This must be the last option
specified. The default is 2048 and values less than 512 are not allowed.
NOTES
Header "NOTES" RSA private key generation essentially involves the generation of two or more
prime numbers. When generating a private key various symbols will be output to
indicate the progress of the generation. A . represents each number which
has passed an initial sieve test, + means a number has passed a single
round of the Miller-Rabin primality test, * means the current prime starts
a regenerating progress due to some failed tests. A newline means that the number
has passed all the prime tests (the actual number depends on the key size).
Because key generation is a random process the time taken to generate a key may vary somewhat. But in general, more primes lead to less generation time of a key.
"SEE ALSO"
Header "SEE ALSO" \fBopenssl\|(1),
\fBopenssl-genpkey\|(1),
\fBopenssl-gendsa\|(1)
COPYRIGHT
Header "COPYRIGHT" Copyright 2000-2023 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the Apache License 2.0 (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 <https://www.openssl.org/source/license.html>.