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 */
ecosdsa_init_pub_key(ec_pub_key * out_pub,const ec_priv_key * in_priv)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 */
ecosdsa_siglen(u16 p_bit_len,u16 q_bit_len,u8 hsize,u8 blocksize,u8 * siglen)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 */
_ecosdsa_sign_init(struct ec_sign_context * ctx)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. */
_ecosdsa_sign_update(struct ec_sign_context * ctx,const u8 * chunk,u32 chunklen)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 */
_ecosdsa_sign_finalize(struct ec_sign_context * ctx,u8 * sig,u8 siglen)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. */
_ecosdsa_verify_init(struct ec_verify_context * ctx,const u8 * sig,u8 siglen)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. */
_ecosdsa_verify_update(struct ec_verify_context * ctx,const u8 * chunk,u32 chunklen)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. */
_ecosdsa_verify_finalize(struct ec_verify_context * ctx)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