103 lines
4.7 KiB
C
103 lines
4.7 KiB
C
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/*
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* Copyright (c) 2013, Kenneth MacKay
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* All rights reserved.
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* Copyright (c) 2017, NVIDIA Corporation. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _CRYPTO_ECC_H
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#define _CRYPTO_ECC_H
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#include <crypto/ecc.h>
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#include "ecc_curve_defs.h"
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const struct ecc_curve *ecc_get_curve(unsigned int curve_id);
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struct ecc_point *ecc_alloc_point(unsigned int ndigits);
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void ecc_free_point(struct ecc_point *p);
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void vli_clear(u64 *vli, unsigned int ndigits);
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bool vli_is_zero(const u64 *vli, unsigned int ndigits);
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unsigned int vli_num_digits(const u64 *vli, unsigned int ndigits);
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unsigned int vli_num_bits(const u64 *vli, unsigned int ndigits);
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void vli_set(u64 *dest, const u64 *src, unsigned int ndigits);
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void vli_copy_to_buf(u8 *dst_buf, unsigned int buf_len,
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const u64 *src_vli, unsigned int ndigits);
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void vli_copy_from_buf(u64 *dst_vli, unsigned int ndigits,
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const u8 *src_buf, unsigned int buf_len);
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int vli_cmp(const u64 *left, const u64 *right, unsigned int ndigits);
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u64 vli_lshift(u64 *result, const u64 *in, unsigned int shift,
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unsigned int ndigits);
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void vli_rshift1(u64 *vli, unsigned int ndigits);
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u64 vli_add(u64 *result, const u64 *left, const u64 *right,
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unsigned int ndigits);
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u64 vli_sub(u64 *result, const u64 *left, const u64 *right,
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unsigned int ndigits);
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void vli_mult(u64 *result, const u64 *left, const u64 *right,
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unsigned int ndigits);
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void vli_square(u64 *result, const u64 *left, unsigned int ndigits);
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void vli_mod_add(u64 *result, const u64 *left, const u64 *right,
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const u64 *mod, unsigned int ndigits);
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void vli_mod_sub(u64 *result, const u64 *left, const u64 *right,
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const u64 *mod, unsigned int ndigits);
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void vli_mod(u64 *result, const u64 *input, const u64 *mod,
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unsigned int ndigits);
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void vli_print(char *vli_name, const u64 *vli, unsigned int ndigits);
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void vli_mod_mult(u64 *result, const u64 *left, const u64 *right,
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const u64 *mod, unsigned int ndigits);
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bool vli_mmod_fast(u64 *result, u64 *product,
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const u64 *curve_prime, unsigned int ndigits);
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void vli_mod_mult_fast(u64 *result, const u64 *left, const u64 *right,
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const u64 *curve_prime, unsigned int ndigits);
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void vli_mod_square_fast(u64 *result, const u64 *left,
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const u64 *curve_prime, unsigned int ndigits);
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void vli_mod_inv(u64 *result, const u64 *input, const u64 *mod,
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unsigned int ndigits);
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bool ecc_point_is_zero(const struct ecc_point *point);
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void ecc_point_double_jacobian(u64 *x1, u64 *y1, u64 *z1,
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u64 *curve_prime, unsigned int ndigits);
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void ecc_point_add(u64 *x1, u64 *y1, u64 *x2, u64 *y2, u64 *curve_prime,
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unsigned int ndigits);
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void ecc_point_mult(struct ecc_point *result,
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const struct ecc_point *point, const u64 *scalar,
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u64 *initial_z, u64 *curve_prime,
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unsigned int ndigits);
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void ecc_swap_digits(const u64 *in, u64 *out, unsigned int ndigits);
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/**
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* ecc_is_key_valid() - Validate a given ECC private key
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*
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* @curve_id: id representing the curve to use
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* @ndigits: curve number of digits
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* @private_key: private key to be used for the given curve
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* @private_key_len: private key len
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*
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* Returns 0 if the key is acceptable, a negative value otherwise
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*/
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int ecc_is_key_valid(unsigned int curve_id, unsigned int ndigits,
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const u8 *private_key, unsigned int private_key_len);
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int ecc_is_pub_key_valid(unsigned int curve_id, unsigned int ndigits,
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const u8 *pub_key, unsigned int pub_key_len);
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#endif /* _CRYPTO_ECC_H */
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