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136 .TH PRIME 1 "2019-09-10" "1.1.1d" "OpenSSL"
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142 openssl\-prime, prime \- compute prime numbers
144 .IX Header "SYNOPSIS"
145 \&\fBopenssl prime\fR
154 .IX Header "DESCRIPTION"
155 The \fBprime\fR command checks if the specified numbers are prime.
157 If no numbers are given on the command line, the \fB\-generate\fR flag should
158 be used to generate primes according to the requirements specified by the
162 .IP "[\fB\-help\fR]" 4
164 Display an option summary.
165 .IP "[\fB\-hex\fR]" 4
168 .IP "[\fB\-generate\fR]" 4
169 .IX Item "[-generate]"
170 Generate a prime number.
171 .IP "[\fB\-bits num\fR]" 4
172 .IX Item "[-bits num]"
173 Generate a prime with \fBnum\fR bits.
174 .IP "[\fB\-safe\fR]" 4
176 When used with \fB\-generate\fR, generates a \*(L"safe\*(R" prime. If the number
177 generated is \fBn\fR, then check that \fB(n\-1)/2\fR is also prime.
178 .IP "[\fB\-checks num\fR]" 4
179 .IX Item "[-checks num]"
180 Perform the checks \fBnum\fR times to see that the generated number
181 is prime. The default is 20.
183 .IX Header "COPYRIGHT"
184 Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
186 Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use
187 this file except in compliance with the License. You can obtain a copy
188 in the file \s-1LICENSE\s0 in the source distribution or at
189 <https://www.openssl.org/source/license.html>.