1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright (c) 2020 Rockchip Electronics Co., Ltd. */ 3 4 #ifndef __RK_CRYPTO_BIGNUM_H__ 5 #define __RK_CRYPTO_BIGNUM_H__ 6 7 enum bignum_endian { 8 RK_BG_BIG_ENDIAN, 9 RK_BG_LITTILE_ENDIAN 10 }; 11 12 /** 13 * struct rk_bignum - crypto bignum struct. 14 */ 15 struct rk_bignum { 16 u32 n_words; 17 u32 *data; 18 }; 19 20 struct rk_bignum *rk_bn_alloc(u32 max_size); 21 void rk_bn_free(struct rk_bignum *bn); 22 int rk_bn_set_data(struct rk_bignum *bn, const u8 *data, u32 size, enum bignum_endian endian); 23 int rk_bn_get_data(const struct rk_bignum *bn, u8 *data, u32 size, enum bignum_endian endian); 24 u32 rk_bn_get_size(const struct rk_bignum *bn); 25 int rk_bn_highest_bit(const struct rk_bignum *src); 26 27 #endif 28