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Diffstat (limited to 'secure/lib/libcrypto/man/BN_bn2bin.3')
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diff --git a/secure/lib/libcrypto/man/BN_bn2bin.3 b/secure/lib/libcrypto/man/BN_bn2bin.3 new file mode 100644 index 0000000..4535d20 --- /dev/null +++ b/secure/lib/libcrypto/man/BN_bn2bin.3 @@ -0,0 +1,233 @@ +.\" Automatically generated by Pod::Man version 1.15 +.\" Thu May 9 13:16:23 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 \fBret\fR is +\&\s-1NULL\s0, a new \fB\s-1BIGNUM\s0\fR is created. +.PP +\&\fIBN_bn2hex()\fR and \fIBN_bn2dec()\fR return printable strings containing the +hexadecimal and decimal encoding of \fBa\fR respectively. For negative +numbers, the string is prefaced with a leading '\-'. The string must be +freed later using \fIOPENSSL_free()\fR. +.PP +\&\fIBN_hex2bn()\fR converts the string \fBstr\fR containing a hexadecimal number +to a \fB\s-1BIGNUM\s0\fR and stores it in **\fBbn\fR. If *\fBbn\fR is \s-1NULL\s0, a new +\&\fB\s-1BIGNUM\s0\fR is created. If \fBbn\fR is \s-1NULL\s0, it only computes the number's +length in hexadecimal digits. If the string starts with '\-', the +number is negative. \fIBN_dec2bn()\fR is the same using the decimal system. +.PP +\&\fIBN_print()\fR and \fIBN_print_fp()\fR write the hexadecimal encoding of \fBa\fR, +with a leading '\-' for negative numbers, to the \fB\s-1BIO\s0\fR or \fB\s-1FILE\s0\fR +\&\fBfp\fR. +.PP +\&\fIBN_bn2mpi()\fR and \fIBN_mpi2bn()\fR convert \fB\s-1BIGNUM\s0\fRs from and to a format +that consists of the number's length in bytes represented as a 3\-byte +big-endian number, and the number itself in big-endian format, where +the most significant bit signals a negative number (the representation +of numbers with the \s-1MSB\s0 set is prefixed with null byte). +.PP +\&\fIBN_bn2mpi()\fR stores the representation of \fBa\fR at \fBto\fR, where \fBto\fR +must be large enough to hold the result. The size can be determined by +calling BN_bn2mpi(\fBa\fR, \s-1NULL\s0). +.PP +\&\fIBN_mpi2bn()\fR converts the \fBlen\fR bytes long representation at \fBs\fR to +a \fB\s-1BIGNUM\s0\fR and stores it at \fBret\fR, or in a newly allocated \fB\s-1BIGNUM\s0\fR +if \fBret\fR is \s-1NULL\s0. +.SH "RETURN VALUES" +.IX Header "RETURN VALUES" +\&\fIBN_bn2bin()\fR returns the length of the big-endian number placed at \fBto\fR. +\&\fIBN_bin2bn()\fR returns the \fB\s-1BIGNUM\s0\fR, \s-1NULL\s0 on error. +.PP +\&\fIBN_bn2hex()\fR and \fIBN_bn2dec()\fR return a null-terminated string, or \s-1NULL\s0 +on error. \fIBN_hex2bn()\fR and \fIBN_dec2bn()\fR return the number's length in +hexadecimal or decimal digits, and 0 on error. +.PP +\&\fIBN_print_fp()\fR and \fIBN_print()\fR return 1 on success, 0 on write errors. +.PP +\&\fIBN_bn2mpi()\fR returns the length of the representation. \fIBN_mpi2bn()\fR +returns the \fB\s-1BIGNUM\s0\fR, and \s-1NULL\s0 on error. +.PP +The error codes can be obtained by ERR_get_error(3). +.SH "SEE ALSO" +.IX Header "SEE ALSO" +bn(3), err(3), BN_zero(3), +ASN1_INTEGER_to_BN(3), +BN_num_bytes(3) +.SH "HISTORY" +.IX Header "HISTORY" +\&\fIBN_bn2bin()\fR, \fIBN_bin2bn()\fR, \fIBN_print_fp()\fR and \fIBN_print()\fR are available +in all versions of SSLeay and OpenSSL. +.PP +\&\fIBN_bn2hex()\fR, \fIBN_bn2dec()\fR, \fIBN_hex2bn()\fR, \fIBN_dec2bn()\fR, \fIBN_bn2mpi()\fR and +\&\fIBN_mpi2bn()\fR were added in SSLeay 0.9.0. |
