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Diffstat (limited to 'secure/lib/libcrypto/man/BN_add.3')
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diff --git a/secure/lib/libcrypto/man/BN_add.3 b/secure/lib/libcrypto/man/BN_add.3 new file mode 100644 index 0000000..ade8c30 --- /dev/null +++ b/secure/lib/libcrypto/man/BN_add.3 @@ -0,0 +1,243 @@ +.\" Automatically generated by Pod::Man version 1.15 +.\" Thu May 9 13:16:18 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++. 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Either of \fBdv\fR and \fBrem\fR may +be \s-1NULL\s0, in which case the respective value is not returned. +For division by powers of 2, use \fIBN_rshift\fR\|(3). +.PP +\&\fIBN_sqr()\fR takes the square of \fBa\fR and places the result in \fBr\fR +(\f(CW\*(C`r=a^2\*(C'\fR). \fBr\fR and \fBa\fR may be the same \fB\s-1BIGNUM\s0\fR. +This function is faster than BN_mul(r,a,a). +.PP +\&\fIBN_mod()\fR find the remainder of \fBa\fR divided by \fBm\fR and places it in +\&\fBrem\fR (\f(CW\*(C`rem=a%m\*(C'\fR). +.PP +\&\fIBN_mod_mul()\fR multiplies \fBa\fR by \fBb\fR and finds the remainder when +divided by \fBm\fR (\f(CW\*(C`r=(a*b)%m\*(C'\fR). \fBr\fR may be the same \fB\s-1BIGNUM\s0\fR as \fBa\fR +or \fBb\fR. For a more efficient algorithm, see +BN_mod_mul_montgomery(3); for repeated +computations using the same modulus, see BN_mod_mul_reciprocal(3). +.PP +\&\fIBN_exp()\fR raises \fBa\fR to the \fBp\fR\-th power and places the result in \fBr\fR +(\f(CW\*(C`r=a^p\*(C'\fR). This function is faster than repeated applications of +\&\fIBN_mul()\fR. +.PP +\&\fIBN_mod_exp()\fR computes \fBa\fR to the \fBp\fR\-th power modulo \fBm\fR (\f(CW\*(C`r=a^p % +m\*(C'\fR). This function uses less time and space than \fIBN_exp()\fR. +.PP +\&\fIBN_gcd()\fR computes the greatest common divisor of \fBa\fR and \fBb\fR and +places the result in \fBr\fR. \fBr\fR may be the same \fB\s-1BIGNUM\s0\fR as \fBa\fR or +\&\fBb\fR. +.PP +For all functions, \fBctx\fR is a previously allocated \fB\s-1BN_CTX\s0\fR used for +temporary variables; see BN_CTX_new(3). +.PP +Unless noted otherwise, the result \fB\s-1BIGNUM\s0\fR must be different from +the arguments. +.SH "RETURN VALUES" +.IX Header "RETURN VALUES" +For all functions, 1 is returned for success, 0 on error. The return +value should always be checked (e.g., \f(CW\*(C`if (!BN_add(r,a,b)) goto err;\*(C'\fR). +The error codes can be obtained by ERR_get_error(3). +.SH "SEE ALSO" +.IX Header "SEE ALSO" +bn(3), err(3), BN_CTX_new(3), +BN_add_word(3), BN_set_bit(3) +.SH "HISTORY" +.IX Header "HISTORY" +\&\fIBN_add()\fR, \fIBN_sub()\fR, \fIBN_div()\fR, \fIBN_sqr()\fR, \fIBN_mod()\fR, \fIBN_mod_mul()\fR, +\&\fIBN_mod_exp()\fR and \fIBN_gcd()\fR are available in all versions of SSLeay and +OpenSSL. The \fBctx\fR argument to \fIBN_mul()\fR was added in SSLeay +0.9.1b. \fIBN_exp()\fR appeared in SSLeay 0.9.0. |
