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Diffstat (limited to 'secure/lib/libcrypto/man/BN_rand.3')
| -rw-r--r-- | secure/lib/libcrypto/man/BN_rand.3 | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/secure/lib/libcrypto/man/BN_rand.3 b/secure/lib/libcrypto/man/BN_rand.3 new file mode 100644 index 0000000..40d6621 --- /dev/null +++ b/secure/lib/libcrypto/man/BN_rand.3 @@ -0,0 +1,196 @@ +.\" Automatically generated by Pod::Man version 1.15 +.\" Thu May 9 13:16:43 2002 +.\" +.\" Standard preamble: +.\" ====================================================================== +.de Sh \" Subsection heading +.br +.if t .Sp +.ne 5 +.PP +\fB\\$1\fR +.PP +.. +.de Sp \" Vertical space (when we can't use .PP) +.if t .sp .5v +.if n .sp +.. +.de Ip \" List item +.br +.ie \\n(.$>=3 .ne \\$3 +.el .ne 3 +.IP "\\$1" \\$2 +.. +.de Vb \" Begin verbatim text +.ft CW +.nf +.ne \\$1 +.. +.de Ve \" End verbatim text +.ft R + +.fi +.. +.\" Set up some character translations and predefined strings. \*(-- will +.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left +.\" double quote, and \*(R" will give a right double quote. | will give a +.\" real vertical bar. \*(C+ will give a nicer C++. Capital omega is used +.\" to do unbreakable dashes and therefore won't be available. \*(C` and +.\" \*(C' expand to `' in nroff, nothing in troff, for use with C<> +.tr \(*W-|\(bv\*(Tr +.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' +.ie n \{\ +. ds -- \(*W- +. ds PI pi +. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch +. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch +. ds L" "" +. ds R" "" +. ds C` "" +. ds C' "" +'br\} +.el\{\ +. ds -- \|\(em\| +. ds PI \(*p +. ds L" `` +. ds R" '' +'br\} +.\" +.\" If the F register is turned on, we'll generate index entries on stderr +.\" for titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and +.\" index entries marked with X<> in POD. Of course, you'll have to process +.\" the output yourself in some meaningful fashion. +.if \nF \{\ +. de IX +. tm Index:\\$1\t\\n%\t"\\$2" +.. +. nr % 0 +. rr F +.\} +.\" +.\" For nroff, turn off justification. Always turn off hyphenation; it +.\" makes way too many mistakes in technical documents. +.hy 0 +.if n .na +.\" +.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2). +.\" Fear. Run. Save yourself. 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If \fBtop\fR is \-1, the +most significant bit of the random number can be zero. If \fBtop\fR is 0, +it is set to 1, and if \fBtop\fR is 1, the two most significant bits of +the number will be set to 1, so that the product of two such random +numbers will always have 2*\fBbits\fR length. If \fBbottom\fR is true, the +number will be odd. +.PP +\&\fIBN_pseudo_rand()\fR does the same, but pseudo-random numbers generated by +this function are not necessarily unpredictable. They can be used for +non-cryptographic purposes and for certain purposes in cryptographic +protocols, but usually not for key generation etc. +.PP +\&\fIBN_rand_range()\fR generates a cryptographically strong pseudo-random +number \fBrnd\fR in the range 0 <lt>= \fBrnd\fR < \fBrange\fR. +\&\fIBN_pseudo_rand_range()\fR does the same, but is based on \fIBN_pseudo_rand()\fR, +and hence numbers generated by it are not necessarily unpredictable. +.PP +The \s-1PRNG\s0 must be seeded prior to calling \fIBN_rand()\fR or \fIBN_rand_range()\fR. +.SH "RETURN VALUES" +.IX Header "RETURN VALUES" +The functions return 1 on success, 0 on error. +The error codes can be obtained by ERR_get_error(3). +.SH "SEE ALSO" +.IX Header "SEE ALSO" +bn(3), err(3), rand(3), +RAND_add(3), RAND_bytes(3) +.SH "HISTORY" +.IX Header "HISTORY" +\&\fIBN_rand()\fR is available in all versions of SSLeay and OpenSSL. +\&\fIBN_pseudo_rand()\fR was added in OpenSSL 0.9.5. The \fBtop\fR == \-1 case +and the function \fIBN_rand_range()\fR were added in OpenSSL 0.9.6a. +\&\fIBN_pseudo_rand_range()\fR was added in OpenSSL 0.9.6c. |
