Import OpenSSL 1.1.0f

crypto/include/internal/bn_int.h

@@ -0,0 +1,82 @@
+/*
+ * Copyright 2014-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (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
+ */
+
+#ifndef HEADER_BN_INT_H
+# define HEADER_BN_INT_H
+
+# include <openssl/bn.h>
+# include <limits.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+BIGNUM *bn_wexpand(BIGNUM *a, int words);
+BIGNUM *bn_expand2(BIGNUM *a, int words);
+
+void bn_correct_top(BIGNUM *a);
+
+/*
+ * Determine the modified width-(w+1) Non-Adjacent Form (wNAF) of 'scalar'.
+ * This is an array r[] of values that are either zero or odd with an
+ * absolute value less than 2^w satisfying scalar = \sum_j r[j]*2^j where at
+ * most one of any w+1 consecutive digits is non-zero with the exception that
+ * the most significant digit may be only w-1 zeros away from that next
+ * non-zero digit.
+ */
+signed char *bn_compute_wNAF(const BIGNUM *scalar, int w, size_t *ret_len);
+
+int bn_get_top(const BIGNUM *a);
+
+void bn_set_top(BIGNUM *a, int top);
+
+int bn_get_dmax(const BIGNUM *a);
+
+/* Set all words to zero */
+void bn_set_all_zero(BIGNUM *a);
+
+/*
+ * Copy the internal BIGNUM words into out which holds size elements (and size
+ * must be bigger than top)
+ */
+int bn_copy_words(BN_ULONG *out, const BIGNUM *in, int size);
+
+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);
+
+/*
+ * Copy words into the BIGNUM |a|, reallocating space as necessary.
+ * The negative flag of |a| is not modified.
+ * Returns 1 on success and 0 on failure.
+ */
+/*
+ * |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);
+
+size_t bn_sizeof_BIGNUM(void);
+
+/*
+ * Return element el from an array of BIGNUMs starting at base (required
+ * because callers do not know the size of BIGNUM at compilation time)
+ */
+BIGNUM *bn_array_el(BIGNUM *base, int el);
+
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif