Flashnux

GNU/Linux man pages

Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :

ISBN : 978-2-7460-9712-4
EAN : 9782746097124
(Editions ENI)

GNU/Linux

CentOS 5.6

BN_clear(3ssl)
BN_new

BN_new

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
SEE ALSO
HISTORY

NAME

BN_new, BN_init, BN_clear, BN_free, BN_clear_free − allocate and free BIGNUMs

SYNOPSIS 

 #include <openssl/bn.h>
 BIGNUM *BN_new(void);
 void BN_init(BIGNUM *);
 void BN_clear(BIGNUM *a);
 void BN_free(BIGNUM *a);
 void BN_clear_free(BIGNUM *a);

DESCRIPTION

BN_new() allocates and initializes a BIGNUM structure. BN_init() initializes an existing uninitialized BIGNUM .

BN_clear() is used to destroy sensitive data such as keys when they are no longer needed. It erases the memory used by a and sets it to the value 0.

BN_free() frees the components of the BIGNUM , and if it was created by BN_new(), also the structure itself. BN_clear_free() additionally overwrites the data before the memory is returned to the system.

RETURN VALUES

BN_new() returns a pointer to the BIGNUM . If the allocation fails, it returns NULL and sets an error code that can be obtained by ERR_get_error(3).

BN_init(), BN_clear(), BN_free() and BN_clear_free() have no return values.

SEE ALSO

bn(3), ERR_get_error(3)

HISTORY

BN_new(), BN_clear(), BN_free() and BN_clear_free() are available in all versions on SSLeay and OpenSSL. BN_init() was added in SSLeay 0.9.1b.

BN_clear(3ssl)