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BN_CTX_new(3) OpenSSL BN_CTX_new(3)
BN_CTX_new, BN_CTX_init, BN_CTX_free - allocate and free
void BN_CTX_init(BN_CTX *c);
void BN_CTX_free(BN_CTX *c);
A BN_CTX is a structure that holds BIGNUM temporary vari-
ables 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.
BN_CTX_new() allocates and initializes a BN_CTX structure.
BN_CTX_init() initializes an existing uninitialized
BN_CTX_free() frees the components of the BN_CTX, and if
it was created by BN_CTX_new(), also the structure itself.
If BN_CTX_start(3) has been used on the BN_CTX,
BN_CTX_end(3) must be called before the BN_CTX may be
freed by BN_CTX_free().
BN_CTX_new() returns a pointer to the BN_CTX. If the allo-
cation fails, it returns NULL and sets an error code that
can be obtained by ERR_get_error(3).
BN_CTX_init() and BN_CTX_free() have no return values.
bn(3), ERR_get_error(3), BN_add(3), BN_CTX_start(3)
BN_CTX_new() and BN_CTX_free() are available in all ver-
sions on SSLeay and OpenSSL. BN_CTX_init() was added in
0.9.7c 2002-09-25 BN_CTX_new(3)
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Created with the man page lookup class by Andrew Collington,