diff options
author | David Howells <dhowells@redhat.com> | 2018-10-09 17:47:07 +0100 |
---|---|---|
committer | James Morris <james.morris@microsoft.com> | 2018-10-26 09:30:46 +0100 |
commit | 5a30771832aab228e0863e414f9182f86797429e (patch) | |
tree | a1b1ebd8134f0c0d853d3102f1212f2601a53789 /crypto/asymmetric_keys/asymmetric_type.c | |
parent | 00d60fd3b93219ea854220f0fd264b86398cbc53 (diff) |
KEYS: Provide missing asymmetric key subops for new key type ops [ver #2]
Provide the missing asymmetric key subops for new key type ops. This
include query, encrypt, decrypt and create signature. Verify signature
already exists. Also provided are accessor functions for this:
int query_asymmetric_key(const struct key *key,
struct kernel_pkey_query *info);
int encrypt_blob(struct kernel_pkey_params *params,
const void *data, void *enc);
int decrypt_blob(struct kernel_pkey_params *params,
const void *enc, void *data);
int create_signature(struct kernel_pkey_params *params,
const void *data, void *enc);
The public_key_signature struct gains an encoding field to carry the
encoding for verify_signature().
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Marcel Holtmann <marcel@holtmann.org>
Reviewed-by: Marcel Holtmann <marcel@holtmann.org>
Reviewed-by: Denis Kenzior <denkenz@gmail.com>
Tested-by: Denis Kenzior <denkenz@gmail.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
Diffstat (limited to 'crypto/asymmetric_keys/asymmetric_type.c')
-rw-r--r-- | crypto/asymmetric_keys/asymmetric_type.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/crypto/asymmetric_keys/asymmetric_type.c b/crypto/asymmetric_keys/asymmetric_type.c index 26539e9a8bda..69a0788a7de5 100644 --- a/crypto/asymmetric_keys/asymmetric_type.c +++ b/crypto/asymmetric_keys/asymmetric_type.c @@ -18,6 +18,7 @@ #include <linux/slab.h> #include <linux/ctype.h> #include <keys/system_keyring.h> +#include <keys/user-type.h> #include "asymmetric_keys.h" MODULE_LICENSE("GPL"); @@ -538,6 +539,45 @@ out: return ret; } +int asymmetric_key_eds_op(struct kernel_pkey_params *params, + const void *in, void *out) +{ + const struct asymmetric_key_subtype *subtype; + struct key *key = params->key; + int ret; + + pr_devel("==>%s()\n", __func__); + + if (key->type != &key_type_asymmetric) + return -EINVAL; + subtype = asymmetric_key_subtype(key); + if (!subtype || + !key->payload.data[0]) + return -EINVAL; + if (!subtype->eds_op) + return -ENOTSUPP; + + ret = subtype->eds_op(params, in, out); + + pr_devel("<==%s() = %d\n", __func__, ret); + return ret; +} + +static int asymmetric_key_verify_signature(struct kernel_pkey_params *params, + const void *in, const void *in2) +{ + struct public_key_signature sig = { + .s_size = params->in2_len, + .digest_size = params->in_len, + .encoding = params->encoding, + .hash_algo = params->hash_algo, + .digest = (void *)in, + .s = (void *)in2, + }; + + return verify_signature(params->key, &sig); +} + struct key_type key_type_asymmetric = { .name = "asymmetric", .preparse = asymmetric_key_preparse, @@ -548,6 +588,9 @@ struct key_type key_type_asymmetric = { .destroy = asymmetric_key_destroy, .describe = asymmetric_key_describe, .lookup_restriction = asymmetric_lookup_restriction, + .asym_query = query_asymmetric_key, + .asym_eds_op = asymmetric_key_eds_op, + .asym_verify_signature = asymmetric_key_verify_signature, }; EXPORT_SYMBOL_GPL(key_type_asymmetric); |