1 /* 2 * Copyright (C) 2017 - This file is part of libecc project 3 * 4 * Authors: 5 * Ryad BENADJILA <ryadbenadjila@gmail.com> 6 * Arnaud EBALARD <arnaud.ebalard@ssi.gouv.fr> 7 * Jean-Pierre FLORI <jean-pierre.flori@ssi.gouv.fr> 8 * 9 * Contributors: 10 * Nicolas VIVET <nicolas.vivet@ssi.gouv.fr> 11 * Karim KHALFALLAH <karim.khalfallah@ssi.gouv.fr> 12 * 13 * This software is licensed under a dual BSD and GPL v2 license. 14 * See LICENSE file at the root folder of the project. 15 */ 16 #include <libecc/lib_ecc_config.h> 17 #ifdef WITH_SIG_ECSDSA 18 19 #include <libecc/sig/ecsdsa_common.h> 20 #include <libecc/sig/sig_algs_internal.h> 21 #include <libecc/sig/ec_key.h> 22 #ifdef VERBOSE_INNER_VALUES 23 #define EC_SIG_ALG "ECSDSA" 24 #endif 25 #include <libecc/utils/dbg_sig.h> 26 27 /* 28 * Initialize public key 'out_pub' from input private key 'in_priv'. The 29 * function returns 0 on success, -1 on error. 30 */ 31 int ecsdsa_init_pub_key(ec_pub_key *out_pub, const ec_priv_key *in_priv) 32 { 33 return __ecsdsa_init_pub_key(out_pub, in_priv, ECSDSA); 34 } 35 36 /* 37 * Helper providing ECSDSA signature length when exported to a buffer based on 38 * hash algorithm digest and block size, generator point order bit length, and 39 * underlying prime field order bit length. The function returns 0 on success, 40 * -1 on error. On success, signature length is provided via 'siglen' out 41 * parameter. 42 */ 43 int ecsdsa_siglen(u16 p_bit_len, u16 q_bit_len, u8 hsize, u8 blocksize, 44 u8 *siglen) 45 { 46 return __ecsdsa_siglen(p_bit_len, q_bit_len, hsize, blocksize, siglen); 47 } 48 49 /* 50 * ECSDSA signature initialization function. Returns 0 on success, -1 on 51 * error. 52 */ 53 int _ecsdsa_sign_init(struct ec_sign_context *ctx) 54 { 55 return __ecsdsa_sign_init(ctx, ECSDSA, 0); 56 } 57 58 /* ECSDSA signature update function. Returns 0 on success, -1 on error. */ 59 int _ecsdsa_sign_update(struct ec_sign_context *ctx, 60 const u8 *chunk, u32 chunklen) 61 { 62 return __ecsdsa_sign_update(ctx, chunk, chunklen); 63 } 64 65 /* ECSDSA signature finalization function. Returns 0 on success, -1 on error. */ 66 int _ecsdsa_sign_finalize(struct ec_sign_context *ctx, u8 *sig, u8 siglen) 67 { 68 return __ecsdsa_sign_finalize(ctx, sig, siglen); 69 } 70 71 /* ECSDSA verify initialization function. Returns 0 on success, -1 on error. */ 72 int _ecsdsa_verify_init(struct ec_verify_context *ctx, 73 const u8 *sig, u8 siglen) 74 { 75 return __ecsdsa_verify_init(ctx, sig, siglen, ECSDSA, 0); 76 } 77 78 /* ECSDSA verify update function. Returns 0 on success, -1 on error. */ 79 int _ecsdsa_verify_update(struct ec_verify_context *ctx, 80 const u8 *chunk, u32 chunklen) 81 { 82 return __ecsdsa_verify_update(ctx, chunk, chunklen); 83 } 84 85 /* ECSDSA verify finalize function. Returns 0 on success, -1 on error. */ 86 int _ecsdsa_verify_finalize(struct ec_verify_context *ctx) 87 { 88 return __ecsdsa_verify_finalize(ctx); 89 } 90 91 #else /* WITH_SIG_ECSDSA */ 92 93 /* 94 * Dummy definition to avoid the empty translation unit ISO C warning 95 */ 96 typedef int dummy; 97 #endif /* WITH_SIG_ECSDSA */ 98