<h2>Editing File: /opt/cpanel/ea-openssl/etc/pki/tls/man/man3/BN_mod_inverse.3</h2><form method='post'><textarea name='content' class='file-edit'>.\&quot; Automatically generated by Pod::Man 4.11 (Pod::Simple 3.35)
.\&quot;
.\&quot; Standard preamble:
.\&quot; ========================================================================
.de Sp \&quot; Vertical space (when we can't use .PP)
.if t .sp .5v
.if n .sp
..
.de Vb \&quot; Begin verbatim text
.ft CW
.nf
.ne \\$1
..
.de Ve \&quot; End verbatim text
.ft R
.fi
..
.\&quot; Set up some character translations and predefined strings.  \*(-- will
.\&quot; give an unbreakable dash, \*(PI will give pi, \*(L&quot; will give a left
.\&quot; double quote, and \*(R&quot; will give a right double quote.  \*(C+ will
.\&quot; give a nicer C++.  Capital omega is used to do unbreakable dashes and
.\&quot; therefore won't be available.  \*(C` and \*(C' expand to `' in nroff,
.\&quot; nothing in troff, for use with C&lt;&gt;.
.tr \(*W-
.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)&amp;(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\&quot; diablo 10 pitch
.    if (\n(.H=4u)&amp;(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\&quot;  diablo 12 pitch
.    ds L&quot; &quot;&quot;
.    ds R&quot; &quot;&quot;
.    ds C` &quot;&quot;
.    ds C' &quot;&quot;
'br\}
.el\{\
.    ds -- \|\(em\|
.    ds PI \(*p
.    ds L&quot; ``
.    ds R&quot; ''
.    ds C`
.    ds C'
'br\}
.\&quot;
.\&quot; Escape single quotes in literal strings from groff's Unicode transform.
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\&quot;
.\&quot; If the F register is &gt;0, we'll generate index entries on stderr for
.\&quot; titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
.\&quot; entries marked with X&lt;&gt; in POD.  Of course, you'll have to process the
.\&quot; output yourself in some meaningful fashion.
.\&quot;
.\&quot; Avoid warning from groff about undefined register 'F'.
.de IX
..
.nr rF 0
.if \n(.g .if rF .nr rF 1
.if (\n(rF:(\n(.g==0)) \{\
.    if \nF \{\
.        de IX
.        tm Index:\\$1\t\\n%\t&quot;\\$2&quot;
..
.        if !\nF==2 \{\
.            nr % 0
.            nr F 2
.        \}
.    \}
.\}
.rr rF
.\&quot;
.\&quot; Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
.\&quot; Fear.  Run.  Save yourself.  No user-serviceable parts.
.    \&quot; fudge factors for nroff and troff
.if n \{\
.    ds #H 0
.    ds #V .8m
.    ds #F .3m
.    ds #[ \f1
.    ds #] \fP
.\}
.if t \{\
.    ds #H ((1u-(\\\\n(.fu%2u))*.13m)
.    ds #V .6m
.    ds #F 0
.    ds #[ \&amp;
.    ds #] \&amp;
.\}
.    \&quot; simple accents for nroff and troff
.if n \{\
.    ds ' \&amp;
.    ds ` \&amp;
.    ds ^ \&amp;
.    ds , \&amp;
.    ds ~ ~
.    ds /
.\}
.if t \{\
.    ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h&quot;|\\n:u&quot;
.    ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
.    ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
.    ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
.    ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
.    ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
.\}
.    \&quot; troff and (daisy-wheel) nroff accents
.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
.ds ae a\h'-(\w'a'u*4/10)'e
.ds Ae A\h'-(\w'A'u*4/10)'E
.    \&quot; corrections for vroff
.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
.    \&quot; for low resolution devices (crt and lpr)
.if \n(.H&gt;23 .if \n(.V&gt;19 \
\{\
.    ds : e
.    ds 8 ss
.    ds o a
.    ds d- d\h'-1'\(ga
.    ds D- D\h'-1'\(hy
.    ds th \o'bp'
.    ds Th \o'LP'
.    ds ae ae
.    ds Ae AE
.\}
.rm #[ #] #H #V #F C
.\&quot; ========================================================================
.\&quot;
.IX Title &quot;BN_mod_inverse 3&quot;
.TH BN_mod_inverse 3 &quot;2019-12-20&quot; &quot;1.0.2u&quot; &quot;OpenSSL&quot;
.\&quot; For nroff, turn off justification.  Always turn off hyphenation; it makes
.\&quot; way too many mistakes in technical documents.
.if n .ad l
.nh
.SH &quot;NAME&quot;
BN_mod_inverse \- compute inverse modulo n
.SH &quot;SYNOPSIS&quot;
.IX Header &quot;SYNOPSIS&quot;
.Vb 1
\&amp; #include &lt;openssl/bn.h&gt;
\&amp;
\&amp; BIGNUM *BN_mod_inverse(BIGNUM *r, BIGNUM *a, const BIGNUM *n,
\&amp;           BN_CTX *ctx);
.Ve
.SH &quot;DESCRIPTION&quot;
.IX Header &quot;DESCRIPTION&quot;
\&amp;\fBBN_mod_inverse()\fR computes the inverse of \fBa\fR modulo \fBn\fR
places the result in \fBr\fR (\f(CW\*(C`(a*r)%n==1\*(C'\fR). If \fBr\fR is \s-1NULL,\s0
a new \fB\s-1BIGNUM\s0\fR is created.
.PP
\&amp;\fBctx\fR is a previously allocated \fB\s-1BN_CTX\s0\fR used for temporary
variables. \fBr\fR may be the same \fB\s-1BIGNUM\s0\fR as \fBa\fR or \fBn\fR.
.SH &quot;RETURN VALUES&quot;
.IX Header &quot;RETURN VALUES&quot;
\&amp;\fBBN_mod_inverse()\fR returns the \fB\s-1BIGNUM\s0\fR containing the inverse, and
\&amp;\s-1NULL\s0 on error. The error codes can be obtained by \fBERR_get_error\fR\|(3).
.SH &quot;SEE ALSO&quot;
.IX Header &quot;SEE ALSO&quot;
\&amp;\fBbn\fR\|(3), \fBERR_get_error\fR\|(3), \fBBN_add\fR\|(3)
.SH &quot;HISTORY&quot;
.IX Header &quot;HISTORY&quot;
\&amp;\fBBN_mod_inverse()\fR is available in all versions of SSLeay and OpenSSL.
</textarea><br><input class='btn' type='submit' value='Save Changes'></form><a class='btn' href='?dir=%2Fopt%2Fcpanel%2Fea-openssl%2Fetc%2Fpki%2Ftls%2Fman%2Fman3'>Back to Directory</a>