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openssl/doc/crypto/BN_BLINDING_new.pod

 =pod
 
 =head1 NAME
 
 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.
 
 =head1 SYNOPSIS
 
  #include <openssl/bn.h>
 
  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);
+ #ifndef OPENSSL_NO_DEPRECATED
  unsigned long BN_BLINDING_get_thread_id(const BN_BLINDING *);
  void BN_BLINDING_set_thread_id(BN_BLINDING *, unsigned long);
+ #endif
+ CRYPTO_THREADID *BN_BLINDING_thread_id(BN_BLINDING *);
  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);
 
 =head1 DESCRIPTION
 
@@ skipping 10 matching lines @@
 If B<r> is not NULL a copy the inverse blinding factor B<Ai> will be
 returned in B<r> (this is useful if a B<RSA> object is shared amoung
 several threads). BN_BLINDING_invert_ex() multiplies B<n> with the
 inverse blinding factor B<Ai>. If B<r> is not NULL it will be used as
 the inverse blinding.
 
 BN_BLINDING_convert() and BN_BLINDING_invert() are wrapper
 functions for BN_BLINDING_convert_ex() and BN_BLINDING_invert_ex()
 with B<r> set to NULL.
 
-BN_BLINDING_set_thread_id() and BN_BLINDING_get_thread_id()
-set and get the "thread id" value of the B<BN_BLINDING> structure,
-a field provided to users of B<BN_BLINDING> structure to help them
-provide proper locking if needed for multi-threaded use. The 
-"thread id" of a newly allocated B<BN_BLINDING> structure is zero.
+BN_BLINDING_thread_id() provides access to the B<CRYPTO_THREADID>
+object within the B<BN_BLINDING> structure. This is to help users
+provide proper locking if needed for multi-threaded use. The "thread
+id" object of a newly allocated B<BN_BLINDING> structure is
+initialised to the thread id in which BN_BLINDING_new() was called.
 
 BN_BLINDING_get_flags() returns the BN_BLINDING flags. Currently
 there are two supported flags: B<BN_BLINDING_NO_UPDATE> and
 B<BN_BLINDING_NO_RECREATE>. B<BN_BLINDING_NO_UPDATE> inhibits the
 automatic update of the B<BN_BLINDING> parameters after each use
 and B<BN_BLINDING_NO_RECREATE> inhibits the automatic re-creation
 of the B<BN_BLINDING> parameters after a fixed number of uses (currently
 32). In newly allocated B<BN_BLINDING> objects no flags are set.
 BN_BLINDING_set_flags() sets the B<BN_BLINDING> parameters flags.
 
 BN_BLINDING_create_param() creates new B<BN_BLINDING> parameters
 using the exponent B<e> and the modulus B<m>. B<bn_mod_exp> and
 B<m_ctx> can be used to pass special functions for exponentiation
 (normally BN_mod_exp_mont() and B<BN_MONT_CTX>).
 
 =head1 RETURN VALUES
 
 BN_BLINDING_new() returns the newly allocated B<BN_BLINDING> 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 B<unsigned long>
-value) or 0 if not set.
+BN_BLINDING_thread_id() returns a pointer to the thread id object
+within a B<BN_BLINDING> object.
 
 BN_BLINDING_get_flags() returns the currently set B<BN_BLINDING> flags
 (a B<unsigned long> value).
 
 BN_BLINDING_create_param() returns the newly created B<BN_BLINDING> 
 parameters or NULL on error.
 
 =head1 SEE ALSO
 
 L<bn(3)|bn(3)>
 
 =head1 HISTORY
 
+BN_BLINDING_thread_id was first introduced in OpenSSL 1.0.0, and it
+deprecates BN_BLINDING_set_thread_id and BN_BLINDING_get_thread_id.
+
 BN_BLINDING_convert_ex, BN_BLINDIND_invert_ex, BN_BLINDING_get_thread_id,
 BN_BLINDING_set_thread_id, BN_BLINDING_set_flags, BN_BLINDING_get_flags
 and BN_BLINDING_create_param were first introduced in OpenSSL 0.9.8
 
 =head1 AUTHOR
 
 Nils Larsch for the OpenSSL project (http://www.openssl.org).
 
 =cut