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22 lines
636 B
C
22 lines
636 B
C
// Copyright 2007,2008 Segher Boessenkool <segher@kernel.crashing.org>
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// Licensed under the terms of the GNU GPL, version 2
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// http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
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#ifndef _TOOLS_H
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#define _TOOLS_H
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#include "sha1.h"
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// bignum
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int bn_compare(u8 *a, u8 *b, u32 n);
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void bn_sub_modulus(u8 *a, u8 *N, u32 n);
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void bn_add(u8 *d, u8 *a, u8 *b, u8 *N, u32 n);
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void bn_mul(u8 *d, u8 *a, u8 *b, u8 *N, u32 n);
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void bn_inv(u8 *d, u8 *a, u8 *N, u32 n); // only for prime N
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void bn_exp(u8 *d, u8 *a, u8 *N, u32 n, u8 *e, u32 en);
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void generate_ecdsa(u8 *R, u8 *S, u8 *k, u8 *hash);
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void ec_priv_to_pub(u8 *k, u8 *Q);
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#endif
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