digsig.c (ed32f8d42cee118b075e4372a55c7739a11094b2) digsig.c (39b07096364a42c516415d5f841069e885234e61)
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2011 Intel Corporation
4 *
5 * Author:
6 * Dmitry Kasatkin <dmitry.kasatkin@intel.com>
7 */
8

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34};
35
36#ifdef CONFIG_IMA_KEYRINGS_PERMIT_SIGNED_BY_BUILTIN_OR_SECONDARY
37#define restrict_link_to_ima restrict_link_by_builtin_and_secondary_trusted
38#else
39#define restrict_link_to_ima restrict_link_by_builtin_trusted
40#endif
41
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2011 Intel Corporation
4 *
5 * Author:
6 * Dmitry Kasatkin <dmitry.kasatkin@intel.com>
7 */
8

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34};
35
36#ifdef CONFIG_IMA_KEYRINGS_PERMIT_SIGNED_BY_BUILTIN_OR_SECONDARY
37#define restrict_link_to_ima restrict_link_by_builtin_and_secondary_trusted
38#else
39#define restrict_link_to_ima restrict_link_by_builtin_trusted
40#endif
41
42int integrity_digsig_verify(const unsigned int id, const char *sig, int siglen,
43 const char *digest, int digestlen)
42static struct key *integrity_keyring_from_id(const unsigned int id)
44{
43{
45 if (id >= INTEGRITY_KEYRING_MAX || siglen < 2)
46 return -EINVAL;
44 if (id >= INTEGRITY_KEYRING_MAX)
45 return ERR_PTR(-EINVAL);
47
48 if (!keyring[id]) {
49 keyring[id] =
50 request_key(&key_type_keyring, keyring_name[id], NULL);
51 if (IS_ERR(keyring[id])) {
52 int err = PTR_ERR(keyring[id]);
53 pr_err("no %s keyring: %d\n", keyring_name[id], err);
54 keyring[id] = NULL;
46
47 if (!keyring[id]) {
48 keyring[id] =
49 request_key(&key_type_keyring, keyring_name[id], NULL);
50 if (IS_ERR(keyring[id])) {
51 int err = PTR_ERR(keyring[id]);
52 pr_err("no %s keyring: %d\n", keyring_name[id], err);
53 keyring[id] = NULL;
55 return err;
54 return ERR_PTR(err);
56 }
57 }
58
55 }
56 }
57
58 return keyring[id];
59}
60
61int integrity_digsig_verify(const unsigned int id, const char *sig, int siglen,
62 const char *digest, int digestlen)
63{
64 struct key *keyring;
65
66 if (siglen < 2)
67 return -EINVAL;
68
69 keyring = integrity_keyring_from_id(id);
70 if (IS_ERR(keyring))
71 return PTR_ERR(keyring);
72
59 switch (sig[1]) {
60 case 1:
61 /* v1 API expect signature without xattr type */
73 switch (sig[1]) {
74 case 1:
75 /* v1 API expect signature without xattr type */
62 return digsig_verify(keyring[id], sig + 1, siglen - 1,
63 digest, digestlen);
76 return digsig_verify(keyring, sig + 1, siglen - 1, digest,
77 digestlen);
64 case 2:
78 case 2:
65 return asymmetric_verify(keyring[id], sig, siglen,
66 digest, digestlen);
79 return asymmetric_verify(keyring, sig, siglen, digest,
80 digestlen);
67 }
68
69 return -EOPNOTSUPP;
70}
71
81 }
82
83 return -EOPNOTSUPP;
84}
85
86int integrity_modsig_verify(const unsigned int id, const struct modsig *modsig)
87{
88 struct key *keyring;
89
90 keyring = integrity_keyring_from_id(id);
91 if (IS_ERR(keyring))
92 return PTR_ERR(keyring);
93
94 return ima_modsig_verify(keyring, modsig);
95}
96
72static int __init __integrity_init_keyring(const unsigned int id,
73 key_perm_t perm,
74 struct key_restriction *restriction)
75{
76 const struct cred *cred = current_cred();
77 int err = 0;
78
79 keyring[id] = keyring_alloc(keyring_name[id], KUIDT_INIT(0),

--- 99 unchanged lines hidden --- 		97static int __init __integrity_init_keyring(const unsigned int id,
98 key_perm_t perm,
99 struct key_restriction *restriction)
100{
101 const struct cred *cred = current_cred();
102 int err = 0;
103
104 keyring[id] = keyring_alloc(keyring_name[id], KUIDT_INIT(0),

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