blake2: backport changes to blake2s

[openssl.git] / crypto / include / internal / bn_int.h

diff --git a/crypto/include/internal/bn_int.h b/crypto/include/internal/bn_int.h
index e7fd8992f4f1c39217dce84417f1a3e5ae16ee3b..66e34ec5b882b99a4ae5b5ca1d4c7b2cf44309b2 100644 (file)
--- a/crypto/include/internal/bn_int.h
+++ b/crypto/include/internal/bn_int.h
@@ -1,7 +1,7 @@
 /*
- * Copyright 2014-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2014-2018 The OpenSSL Project Authors. All Rights Reserved.
  *
- * Licensed under the OpenSSL license (the "License").  You may not use
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
@@ -47,7 +47,7 @@ BN_ULONG *bn_get_words(const BIGNUM *a);
  * Set the internal data words in a to point to words which contains size
  * elements. The BN_FLG_STATIC_DATA flag is set
  */
-void bn_set_static_words(BIGNUM *a, BN_ULONG *words, int size);
+void bn_set_static_words(BIGNUM *a, const BN_ULONG *words, int size);
 
 /*
  * Copy words into the BIGNUM |a|, reallocating space as necessary.
@@ -58,18 +58,33 @@ void bn_set_static_words(BIGNUM *a, BN_ULONG *words, int size);
  * |num_words| is int because bn_expand2 takes an int. This is an internal
  * function so we simply trust callers not to pass negative values.
  */
-int bn_set_words(BIGNUM *a, BN_ULONG *words, int num_words);
+int bn_set_words(BIGNUM *a, const BN_ULONG *words, int num_words);
 
 /*
  * Some BIGNUM functions assume most significant limb to be non-zero, which
  * is customarily arranged by bn_correct_top. Output from below functions
  * is not processed with bn_correct_top, and for this reason it may not be
  * returned out of public API. It may only be passed internally into other
- * functions known to support non-minimal or zero-padded BIGNUMs.
+ * functions known to support non-minimal or zero-padded BIGNUMs. Even
+ * though the goal is to facilitate constant-time-ness, not each subroutine
+ * is constant-time by itself. They all have pre-conditions, consult source
+ * code...
  */
 int bn_mul_mont_fixed_top(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
                           BN_MONT_CTX *mont, BN_CTX *ctx);
 int bn_to_mont_fixed_top(BIGNUM *r, const BIGNUM *a, BN_MONT_CTX *mont,
                          BN_CTX *ctx);
+int bn_from_mont_fixed_top(BIGNUM *r, const BIGNUM *a, BN_MONT_CTX *mont,
+                           BN_CTX *ctx);
+int bn_mod_add_fixed_top(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                         const BIGNUM *m);
+int bn_mod_sub_fixed_top(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                         const BIGNUM *m);
+int bn_mul_fixed_top(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx);
+int bn_sqr_fixed_top(BIGNUM *r, const BIGNUM *a, BN_CTX *ctx);
+int bn_lshift_fixed_top(BIGNUM *r, const BIGNUM *a, int n);
+int bn_rshift_fixed_top(BIGNUM *r, const BIGNUM *a, int n);
+int bn_div_fixed_top(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m,
+                     const BIGNUM *d, BN_CTX *ctx);
 
 #endif