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_ECOSDSA 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 "ECOSDSA" 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 ecosdsa_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, ECOSDSA); 34 } 35 36 /* 37 * Helper providing ECOSDSA 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 ecosdsa_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 * ECOSDSA signature initialization function. Returns 0 on success, -1 on 51 * error. 52 */ 53 int _ecosdsa_sign_init(struct ec_sign_context *ctx) 54 { 55 return __ecsdsa_sign_init(ctx, ECOSDSA, 1); 56 } 57 58 /* ECOSDSA signature update function. Returns 0 on success, -1 on error. */ 59 int _ecosdsa_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 /* 66 * ECOSDSA signature finalization function. Returns 0 on success, -1 on error. 67 */ 68 int _ecosdsa_sign_finalize(struct ec_sign_context *ctx, u8 *sig, u8 siglen) 69 { 70 return __ecsdsa_sign_finalize(ctx, sig, siglen); 71 } 72 73 /* ECOSDSA verify initialization function. Returns 0 on success, -1 on error. */ 74 int _ecosdsa_verify_init(struct ec_verify_context *ctx, 75 const u8 *sig, u8 siglen) 76 { 77 return __ecsdsa_verify_init(ctx, sig, siglen, ECOSDSA, 1); 78 } 79 80 /* ECOSDSA verify update function. Returns 0 on success, -1 on error. */ 81 int _ecosdsa_verify_update(struct ec_verify_context *ctx, 82 const u8 *chunk, u32 chunklen) 83 { 84 return __ecsdsa_verify_update(ctx, chunk, chunklen); 85 } 86 87 /* ECOSDSA verify finalization function. Returns 0 on success, -1 on error. */ 88 int _ecosdsa_verify_finalize(struct ec_verify_context *ctx) 89 { 90 return __ecsdsa_verify_finalize(ctx); 91 } 92 93 #else /* WITH_SIG_ECOSDSA */ 94 95 /* 96 * Dummy definition to avoid the empty translation unit ISO C warning 97 */ 98 typedef int dummy; 99 #endif /* WITH_SIG_ECOSDSA */ 100