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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
       BN_CTX structures


        BN_CTX *BN_CTX_new(void);

        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
       SSLeay 0.9.1b.

0.9.7c                      2002-09-25              BN_CTX_new(3)

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