1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (C) 2019 Microsoft Corporation.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Author: Jaskaran Singh Khurana <jaskarankhurana@linux.microsoft.com>
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun #ifndef DM_VERITY_SIG_VERIFICATION_H
9*4882a593Smuzhiyun #define DM_VERITY_SIG_VERIFICATION_H
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #define DM_VERITY_ROOT_HASH_VERIFICATION "DM Verity Sig Verification"
12*4882a593Smuzhiyun #define DM_VERITY_ROOT_HASH_VERIFICATION_OPT_SIG_KEY "root_hash_sig_key_desc"
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun struct dm_verity_sig_opts {
15*4882a593Smuzhiyun unsigned int sig_size;
16*4882a593Smuzhiyun u8 *sig;
17*4882a593Smuzhiyun };
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun #ifdef CONFIG_DM_VERITY_VERIFY_ROOTHASH_SIG
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun #define DM_VERITY_ROOT_HASH_VERIFICATION_OPTS 2
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun int verity_verify_root_hash(const void *data, size_t data_len,
24*4882a593Smuzhiyun const void *sig_data, size_t sig_len);
25*4882a593Smuzhiyun bool verity_verify_is_sig_opt_arg(const char *arg_name);
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun int verity_verify_sig_parse_opt_args(struct dm_arg_set *as, struct dm_verity *v,
28*4882a593Smuzhiyun struct dm_verity_sig_opts *sig_opts,
29*4882a593Smuzhiyun unsigned int *argc, const char *arg_name);
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun void verity_verify_sig_opts_cleanup(struct dm_verity_sig_opts *sig_opts);
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun #else
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun #define DM_VERITY_ROOT_HASH_VERIFICATION_OPTS 0
36*4882a593Smuzhiyun
verity_verify_root_hash(const void * data,size_t data_len,const void * sig_data,size_t sig_len)37*4882a593Smuzhiyun static inline int verity_verify_root_hash(const void *data, size_t data_len,
38*4882a593Smuzhiyun const void *sig_data, size_t sig_len)
39*4882a593Smuzhiyun {
40*4882a593Smuzhiyun return 0;
41*4882a593Smuzhiyun }
42*4882a593Smuzhiyun
verity_verify_is_sig_opt_arg(const char * arg_name)43*4882a593Smuzhiyun static inline bool verity_verify_is_sig_opt_arg(const char *arg_name)
44*4882a593Smuzhiyun {
45*4882a593Smuzhiyun return false;
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun
verity_verify_sig_parse_opt_args(struct dm_arg_set * as,struct dm_verity * v,struct dm_verity_sig_opts * sig_opts,unsigned int * argc,const char * arg_name)48*4882a593Smuzhiyun static inline int verity_verify_sig_parse_opt_args(struct dm_arg_set *as,
49*4882a593Smuzhiyun struct dm_verity *v, struct dm_verity_sig_opts *sig_opts,
50*4882a593Smuzhiyun unsigned int *argc, const char *arg_name)
51*4882a593Smuzhiyun {
52*4882a593Smuzhiyun return -EINVAL;
53*4882a593Smuzhiyun }
54*4882a593Smuzhiyun
verity_verify_sig_opts_cleanup(struct dm_verity_sig_opts * sig_opts)55*4882a593Smuzhiyun static inline void verity_verify_sig_opts_cleanup(struct dm_verity_sig_opts *sig_opts)
56*4882a593Smuzhiyun {
57*4882a593Smuzhiyun }
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun #endif /* CONFIG_DM_VERITY_VERIFY_ROOTHASH_SIG */
60*4882a593Smuzhiyun #endif /* DM_VERITY_SIG_VERIFICATION_H */
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