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135 .\" ========================================================================
136 .\"
137 .IX Title "RAND 1"
138 .TH RAND 1 "2009-07-19" "1.0.1n" "OpenSSL"
139 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
140 .\" way too many mistakes in technical documents.
141 .if n .ad l
142 .nh
143 .SH "NAME"
144 rand \- generate pseudo\-random bytes
145 .SH "LIBRARY"
146 libcrypto, -lcrypto
147 .SH "SYNOPSIS"
148 .IX Header "SYNOPSIS"
149 \&\fBopenssl rand\fR
150 [\fB\-out\fR \fIfile\fR]
151 [\fB\-rand\fR \fIfile(s)\fR]
152 [\fB\-base64\fR]
153 [\fB\-hex\fR]
154 \&\fInum\fR
155 .SH "DESCRIPTION"
156 .IX Header "DESCRIPTION"
157 The \fBrand\fR command outputs \fInum\fR pseudo-random bytes after seeding
158 the random number generator once. As in other \fBopenssl\fR command
159 line tools, \s-1PRNG\s0 seeding uses the file \fI\f(CI$HOME\fI/\fR\fB.rnd\fR or \fB.rnd\fR
160 in addition to the files given in the \fB\-rand\fR option. A new
161 \&\fI\f(CI$HOME\fI\fR/\fB.rnd\fR or \fB.rnd\fR file will be written back if enough
162 seeding was obtained from these sources.
163 .SH "OPTIONS"
164 .IX Header "OPTIONS"
165 .IP "\fB\-out\fR \fIfile\fR" 4
166 .IX Item "-out file"
167 Write to \fIfile\fR instead of standard output.
168 .IP "\fB\-rand\fR \fIfile(s)\fR" 4
169 .IX Item "-rand file(s)"
170 Use specified file or files or \s-1EGD\s0 socket (see \fIRAND_egd\fR\|(3))
171 for seeding the random number generator.
172 Multiple files can be specified separated by a OS-dependent character.
173 The separator is \fB;\fR for MS-Windows, \fB,\fR for OpenVMS, and \fB:\fR for
174 all others.
175 .IP "\fB\-base64\fR" 4
176 .IX Item "-base64"
177 Perform base64 encoding on the output.
178 .IP "\fB\-hex\fR" 4
179 .IX Item "-hex"
180 Show the output as a hex string.
181 .SH "SEE ALSO"
182 .IX Header "SEE ALSO"
183 \&\fIRAND_bytes\fR\|(3)