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