Manual Pages for UNIX Operating System command usage for man BN_BLINDING_get_flags

OpenSSL                                 BN_BLINDING_new(3openssl)



NNNNAAAAMMMMEEEE
     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_get_flags, BN_BLINDING_set_flags,
     BN_BLINDING_create_param - blinding related BIGNUM
     functions.

SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
      #include 

      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);
      unsigned long BN_BLINDING_get_thread_id(const BN_BLINDING *);
      void BN_BLINDING_set_thread_id(BN_BLINDING *, unsigned long);
      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);


DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
     BN_BLINDING_new() allocates a new BBBBNNNN_BBBBLLLLIIIINNNNDDDDIIIINNNNGGGG structure and
     copies the AAAA and AAAAiiii values into the newly created
     BBBBNNNN_BBBBLLLLIIIINNNNDDDDIIIINNNNGGGG object.

     BN_BLINDING_free() frees the BBBBNNNN_BBBBLLLLIIIINNNNDDDDIIIINNNNGGGG structure.

     BN_BLINDING_update() updates the BBBBNNNN_BBBBLLLLIIIINNNNDDDDIIIINNNNGGGG parameters by
     squaring the AAAA and AAAAiiii or, after specific number of uses and
     if the necessary parameters are set, by re-creating the
     blinding parameters.

     BN_BLINDING_convert_ex() multiplies nnnn with the blinding
     factor AAAA.  If rrrr is not NULL a copy the inverse blinding
     factor AAAAiiii will be returned in rrrr (this is useful if a RRRRSSSSAAAA
     object is shared amoung several threads).
     BN_BLINDING_invert_ex() multiplies nnnn with the inverse
     blinding factor AAAAiiii. If rrrr is not NULL it will be used as the
     inverse blinding.



26/Apr/2005            Last change: 0.9.8o                      1






OpenSSL                                 BN_BLINDING_new(3openssl)



     BN_BLINDING_convert() and BN_BLINDING_invert() are wrapper
     functions for BN_BLINDING_convert_ex() and
     BN_BLINDING_invert_ex() with rrrr set to NULL.

     BN_BLINDING_set_thread_id() and BN_BLINDING_get_thread_id()
     set and get the "thread id" value of the BBBBNNNN_BBBBLLLLIIIINNNNDDDDIIIINNNNGGGG
     structure, a field provided to users of BBBBNNNN_BBBBLLLLIIIINNNNDDDDIIIINNNNGGGG
     structure to help them provide proper locking if needed for
     multi-threaded use. The "thread id" of a newly allocated
     BBBBNNNN_BBBBLLLLIIIINNNNDDDDIIIINNNNGGGG structure is zero.

     BN_BLINDING_get_flags() returns the BN_BLINDING flags.
     Currently there are two supported flags:
     BBBBNNNN_BBBBLLLLIIIINNNNDDDDIIIINNNNGGGG_NNNNOOOO_UUUUPPPPDDDDAAAATTTTEEEE and BBBBNNNN_BBBBLLLLIIIINNNNDDDDIIIINNNNGGGG_NNNNOOOO_RRRREEEECCCCRRRREEEEAAAATTTTEEEE.
     BBBBNNNN_BBBBLLLLIIIINNNNDDDDIIIINNNNGGGG_NNNNOOOO_UUUUPPPPDDDDAAAATTTTEEEE inhibits the automatic update of the
     BBBBNNNN_BBBBLLLLIIIINNNNDDDDIIIINNNNGGGG parameters after each use and
     BBBBNNNN_BBBBLLLLIIIINNNNDDDDIIIINNNNGGGG_NNNNOOOO_RRRREEEECCCCRRRREEEEAAAATTTTEEEE inhibits the automatic re-creation
     of the BBBBNNNN_BBBBLLLLIIIINNNNDDDDIIIINNNNGGGG parameters after a fixed number of uses
     (currently 32). In newly allocated BBBBNNNN_BBBBLLLLIIIINNNNDDDDIIIINNNNGGGG objects no
     flags are set.  BN_BLINDING_set_flags() sets the BBBBNNNN_BBBBLLLLIIIINNNNDDDDIIIINNNNGGGG
     parameters flags.

     BN_BLINDING_create_param() creates new BBBBNNNN_BBBBLLLLIIIINNNNDDDDIIIINNNNGGGG
     parameters using the exponent eeee and the modulus mmmm.
     bbbbnnnn_mmmmoooodddd_eeeexxxxpppp and mmmm_ccccttttxxxx can be used to pass special functions
     for exponentiation (normally BN_mod_exp_mont() and
     BBBBNNNN_MMMMOOOONNNNTTTT_CCCCTTTTXXXX).

RRRREEEETTTTUUUURRRRNNNN VVVVAAAALLLLUUUUEEEESSSS
     BN_BLINDING_new() returns the newly allocated BBBBNNNN_BBBBLLLLIIIINNNNDDDDIIIINNNNGGGG
     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 occured.

     BN_BLINDING_get_thread_id() returns the thread id (a
     uuuunnnnssssiiiiggggnnnneeeedddd lllloooonnnngggg value) or 0 if not set.

     BN_BLINDING_get_flags() returns the currently set
     BBBBNNNN_BBBBLLLLIIIINNNNDDDDIIIINNNNGGGG flags (a uuuunnnnssssiiiiggggnnnneeeedddd lllloooonnnngggg value).

     BN_BLINDING_create_param() returns the newly created
     BBBBNNNN_BBBBLLLLIIIINNNNDDDDIIIINNNNGGGG parameters or NULL on error.

SSSSEEEEEEEE AAAALLLLSSSSOOOO
     bn(3)

HHHHIIIISSSSTTTTOOOORRRRYYYY
     BN_BLINDING_convert_ex, BN_BLINDIND_invert_ex,
     BN_BLINDING_get_thread_id, BN_BLINDING_set_thread_id,



26/Apr/2005            Last change: 0.9.8o                      2






OpenSSL                                 BN_BLINDING_new(3openssl)



     BN_BLINDING_set_flags, BN_BLINDING_get_flags and
     BN_BLINDING_create_param were first introduced in OpenSSL
     0.9.8

AAAAUUUUTTTTHHHHOOOORRRR
     Nils Larsch for the OpenSSL project
     (http://www.openssl.org).
















































26/Apr/2005            Last change: 0.9.8o                      3