On Apache/2.4.6 (CentOS)
Under GNU General Public License
2025-06-23 22:12 @127.0.0.1 CrawledBy Wget/1.21.2
BN_BLINDING_new(3) OpenSSL BN_BLINDING_new(3)
NAME
BN_BLINDING_new, BN_BLINDING_free, BN_BLINDING_update, BN_BLINDING_convert,
BN_BLINDING_invert, BN_BLINDING_convert_ex, BN_BLINDING_invert_ex,
BN_BLINDING_get_thread_id, BN_BLINDING_set_thread_id, BN_BLINDING_thread_id,
BN_BLINDING_get_flags, BN_BLINDING_set_flags, BN_BLINDING_create_param - blinding related
BIGNUM functions.
SYNOPSIS
#include <openssl/bn.h>
BN_BLINDING *BN_BLINDING_new(const BIGNUM *A, const BIGNUM *Ai,
BIGNUM *mod);
void BN_BLINDING_free(BN_BLINDING *b);
int BN_BLINDING_update(BN_BLINDING *b,BN_CTX *ctx);
int BN_BLINDING_convert(BIGNUM *n, BN_BLINDING *b, BN_CTX *ctx);
int BN_BLINDING_invert(BIGNUM *n, BN_BLINDING *b, BN_CTX *ctx);
int BN_BLINDING_convert_ex(BIGNUM *n, BIGNUM *r, BN_BLINDING *b,
BN_CTX *ctx);
int BN_BLINDING_invert_ex(BIGNUM *n, const BIGNUM *r, BN_BLINDING *b,
BN_CTX *ctx);
#ifndef OPENSSL_NO_DEPRECATED
unsigned long BN_BLINDING_get_thread_id(const BN_BLINDING *);
void BN_BLINDING_set_thread_id(BN_BLINDING *, unsigned long);
#endif
CRYPTO_THREADID *BN_BLINDING_thread_id(BN_BLINDING *);
unsigned long BN_BLINDING_get_flags(const BN_BLINDING *);
void BN_BLINDING_set_flags(BN_BLINDING *, unsigned long);
BN_BLINDING *BN_BLINDING_create_param(BN_BLINDING *b,
const BIGNUM *e, BIGNUM *m, BN_CTX *ctx,
int (*bn_mod_exp)(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx),
BN_MONT_CTX *m_ctx);
DESCRIPTION
BN_BLINDING_new() allocates a new BN_BLINDING structure and copies the A and Ai values
into the newly created BN_BLINDING object.
BN_BLINDING_free() frees the BN_BLINDING structure.
BN_BLINDING_update() updates the BN_BLINDING parameters by squaring the A and Ai or, after
specific number of uses and if the necessary parameters are set, by re-creating the
blinding parameters.
BN_BLINDING_convert_ex() multiplies n with the blinding factor A. If r is not NULL a copy
the inverse blinding factor Ai will be returned in r (this is useful if a RSA object is
shared among several threads). BN_BLINDING_invert_ex() multiplies n with the inverse
blinding factor Ai. If r is not NULL it will be used as the inverse blinding.
BN_BLINDING_convert() and BN_BLINDING_invert() are wrapper functions for
BN_BLINDING_convert_ex() and BN_BLINDING_invert_ex() with r set to NULL.
BN_BLINDING_thread_id() provides access to the CRYPTO_THREADID object within the
BN_BLINDING structure. This is to help users provide proper locking if needed for multi-
threaded use. The "thread id" object of a newly allocated BN_BLINDING structure is
initialised to the thread id in which BN_BLINDING_new() was called.
BN_BLINDING_get_flags() returns the BN_BLINDING flags. Currently there are two supported
flags: BN_BLINDING_NO_UPDATE and BN_BLINDING_NO_RECREATE. BN_BLINDING_NO_UPDATE inhibits
the automatic update of the BN_BLINDING parameters after each use and
BN_BLINDING_NO_RECREATE inhibits the automatic re-creation of the BN_BLINDING parameters
after a fixed number of uses (currently 32). In newly allocated BN_BLINDING objects no
flags are set. BN_BLINDING_set_flags() sets the BN_BLINDING parameters flags.
BN_BLINDING_create_param() creates new BN_BLINDING parameters using the exponent e and the
modulus m. bn_mod_exp and m_ctx can be used to pass special functions for exponentiation
(normally BN_mod_exp_mont() and BN_MONT_CTX).
RETURN VALUES
BN_BLINDING_new() returns the newly allocated BN_BLINDING structure or NULL in case of an
error.
BN_BLINDING_update(), BN_BLINDING_convert(), BN_BLINDING_invert(),
BN_BLINDING_convert_ex() and BN_BLINDING_invert_ex() return 1 on success and 0 if an error
occurred.
BN_BLINDING_thread_id() returns a pointer to the thread id object within a BN_BLINDING
object.
BN_BLINDING_get_flags() returns the currently set BN_BLINDING flags (a unsigned long
value).
BN_BLINDING_create_param() returns the newly created BN_BLINDING parameters or NULL on
error.
SEE ALSO
bn(3)
HISTORY
BN_BLINDING_thread_id was first introduced in OpenSSL 1.0.0, and it deprecates
BN_BLINDING_set_thread_id and BN_BLINDING_get_thread_id.
BN_BLINDING_convert_ex, BN_BLINDIND_invert_ex, BN_BLINDING_get_thread_id,
BN_BLINDING_set_thread_id, BN_BLINDING_set_flags, BN_BLINDING_get_flags and
BN_BLINDING_create_param were first introduced in OpenSSL 0.9.8
AUTHOR
Nils Larsch for the OpenSSL project (http://www.openssl.org).
1.0.2k 2017-01-26 BN_BLINDING_new(3)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache/2.4.6 (CentOS)
Under GNU General Public License
2025-06-23 22:12 @127.0.0.1 CrawledBy Wget/1.21.2