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NAMEBN_CTX_new, BN_CTX_secure_new, BN_CTX_free - allocate and free BN_CTX structures
SYNOPSIS#include <openssl/bn.h> BN_CTX *BN_CTX_new(void); BN_CTX *BN_CTX_secure_new(void); void BN_CTX_free(BN_CTX *c);
DESCRIPTIONA BN_CTX is a structure that holds BIGNUM temporary variables used by library functions. Since dynamic memory allocation to create BIGNUMs is rather expensive when used in conjunction with repeated subroutine calls, the BN_CTX structure is used.
A given BN_CTX must only be used by a single thread of execution. No locking is performed, and the internal pool allocator will not properly handle multiple threads of execution.
RETURN VALUES
REMOVED FUNCTIONALITYvoid BN_CTX_init(BN_CTX *c);
BN_CTX *ctx; ctx = BN_CTX_new(); if (!ctx) /* error */ ... BN_CTX_free(ctx);
SEE ALSOERR_get_error(3), BN_add(3), BN_CTX_start(3)
HISTORY
COPYRIGHTCopyright 2000-2017 The OpenSSL Project Authors. All Rights Reserved. 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 https://www.openssl.org/source/license.html. |
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