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Import OpenSSL 1.1.0f

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Steve Dower
2017-09-07 16:27:43 -07:00
committed by Steve Dower
parent ccd3ab4aff
commit f4b81cb7c9
3340 changed files with 325158 additions and 557542 deletions
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55
doc/crypto/BN_bn2bin.pod
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@@ -2,16 +2,22 @@
=head1 NAME
BN_bn2bin, BN_bin2bn, BN_bn2hex, BN_bn2dec, BN_hex2bn, BN_dec2bn,
BN_print, BN_print_fp, BN_bn2mpi, BN_mpi2bn - format conversions
BN_bn2binpad,
BN_bn2bin, BN_bin2bn, BN_bn2lebinpad, BN_lebin2bn, BN_bn2hex, BN_bn2dec,
BN_hex2bn, BN_dec2bn, BN_print, BN_print_fp, BN_bn2mpi,
BN_mpi2bn - format conversions
=head1 SYNOPSIS
#include <openssl/bn.h>
int BN_bn2bin(const BIGNUM *a, unsigned char *to);
int BN_bn2binpad(const BIGNUM *a, unsigned char *to, int tolen);
BIGNUM *BN_bin2bn(const unsigned char *s, int len, BIGNUM *ret);
int BN_bn2lebinpad(const BIGNUM *a, unsigned char *to, int tolen);
BIGNUM *BN_lebin2bn(const unsigned char *s, int len, BIGNUM *ret);
char *BN_bn2hex(const BIGNUM *a);
char *BN_bn2dec(const BIGNUM *a);
int BN_hex2bn(BIGNUM **a, const char *str);
@@ -29,20 +35,28 @@ BN_bn2bin() converts the absolute value of B<a> into big-endian form
and stores it at B<to>. B<to> must point to BN_num_bytes(B<a>) bytes of
memory.
BN_bn2binpad() also converts the absolute value of B<a> into big-endian form
and stores it at B<to>. B<tolen> indicates the length of the output buffer
B<to>. The result is padded with zeroes if necessary. If B<tolen> is less than
BN_num_bytes(B<a>) an error is returned.
BN_bin2bn() converts the positive integer in big-endian form of length
B<len> at B<s> into a B<BIGNUM> and places it in B<ret>. If B<ret> is
NULL, a new B<BIGNUM> is created.
BN_bn2lebinpad() and BN_bin2lbn() are identical to BN_bn2binpad() and
BN_bin2bn() except the buffer is in little-endian format.
BN_bn2hex() and BN_bn2dec() return printable strings containing the
hexadecimal and decimal encoding of B<a> respectively. For negative
numbers, the string is prefaced with a leading '-'. The string must be
freed later using OPENSSL_free().
BN_hex2bn() converts the string B<str> containing a hexadecimal number
to a B<BIGNUM> and stores it in **B<bn>. If *B<bn> is NULL, a new
B<BIGNUM> is created. If B<bn> is NULL, it only computes the number's
length in hexadecimal digits. If the string starts with '-', the
number is negative.
BN_hex2bn() takes as many characters as possible from the string B<str>,
including the leading character '-' which means negative, to form a valid
hexadecimal number representation and converts them to a B<BIGNUM> and
stores it in **B<bn>. If *B<bn> is NULL, a new B<BIGNUM> is created. If
B<bn> is NULL, it only computes the length of valid representation.
A "negative zero" is converted to zero.
BN_dec2bn() is the same using the decimal system.
@@ -69,29 +83,34 @@ if B<ret> is NULL.
BN_bn2bin() returns the length of the big-endian number placed at B<to>.
BN_bin2bn() returns the B<BIGNUM>, NULL on error.
BN_bn2binpad() returns the number of bytes written or -1 if the supplied
buffer is too small.
BN_bn2hex() and BN_bn2dec() return a null-terminated string, or NULL
on error. BN_hex2bn() and BN_dec2bn() return the number's length in
hexadecimal or decimal digits, and 0 on error.
on error. BN_hex2bn() and BN_dec2bn() return the the length of valid
representation in hexadecimal or decimal digits, and 0 on error, in which
case no new B<BIGNUM> will be created.
BN_print_fp() and BN_print() return 1 on success, 0 on write errors.
BN_bn2mpi() returns the length of the representation. BN_mpi2bn()
returns the B<BIGNUM>, and NULL on error.
The error codes can be obtained by L<ERR_get_error(3)|ERR_get_error(3)>.
The error codes can be obtained by L<ERR_get_error(3)>.
=head1 SEE ALSO
L<bn(3)|bn(3)>, L<ERR_get_error(3)|ERR_get_error(3)>, L<BN_zero(3)|BN_zero(3)>,
L<ASN1_INTEGER_to_BN(3)|ASN1_INTEGER_to_BN(3)>,
L<BN_num_bytes(3)|BN_num_bytes(3)>
L<ERR_get_error(3)>, L<BN_zero(3)>,
L<ASN1_INTEGER_to_BN(3)>,
L<BN_num_bytes(3)>
=head1 HISTORY
=head1 COPYRIGHT
BN_bn2bin(), BN_bin2bn(), BN_print_fp() and BN_print() are available
in all versions of SSLeay and OpenSSL.
Copyright 2000-2017 The OpenSSL Project Authors. All Rights Reserved.
BN_bn2hex(), BN_bn2dec(), BN_hex2bn(), BN_dec2bn(), BN_bn2mpi() and
BN_mpi2bn() were added in SSLeay 0.9.0.
Licensed under the OpenSSL license (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
L<https://www.openssl.org/source/license.html>.
=cut