From 92ba5f5b7310567bad614a8269a306a126216bda Mon Sep 17 00:00:00 2001
From: Dmitry Kasatkin <d.kasatkin@samsung.com>
Date: Mon, 6 Oct 2014 16:52:12 +0100
Subject: [PATCH] KEYS: use swapped SKID for performing partial matching
Earlier KEYS code used pure subject key identifiers (fingerprint)
for searching keys. Latest merged code removed that and broke
compatibility with integrity subsytem signatures and original
format of module signatures.
This patch returns back partial matching on SKID.
Reported-by: Dmitry Kasatkin <d.kasatkin@samsung.com>
Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com>
Signed-off-by: David Howells <dhowells@redhat.com>
---
crypto/asymmetric_keys/x509_cert_parser.c | 12 ++++++------
crypto/asymmetric_keys/x509_parser.h | 6 +++---
2 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/crypto/asymmetric_keys/x509_cert_parser.c b/crypto/asymmetric_keys/x509_cert_parser.c
index 393706f33fa54..a668d90302d38 100644
--- a/crypto/asymmetric_keys/x509_cert_parser.c
+++ b/crypto/asymmetric_keys/x509_cert_parser.c
@@ -437,9 +437,9 @@ int x509_process_extension(void *context, size_t hdrlen,
ctx->cert->raw_skid_size = vlen;
ctx->cert->raw_skid = v;
- kid = asymmetric_key_generate_id(v, vlen,
- ctx->cert->raw_subject,
- ctx->cert->raw_subject_size);
+ kid = asymmetric_key_generate_id(ctx->cert->raw_subject,
+ ctx->cert->raw_subject_size,
+ v, vlen);
if (IS_ERR(kid))
return PTR_ERR(kid);
ctx->cert->skid = kid;
@@ -493,9 +493,9 @@ int x509_process_extension(void *context, size_t hdrlen,
v += (sub + 2);
}
- kid = asymmetric_key_generate_id(v, vlen,
- ctx->cert->raw_issuer,
- ctx->cert->raw_issuer_size);
+ kid = asymmetric_key_generate_id(ctx->cert->raw_issuer,
+ ctx->cert->raw_issuer_size,
+ v, vlen);
if (IS_ERR(kid))
return PTR_ERR(kid);
pr_debug("authkeyid %*phN\n", kid->len, kid->data);
diff --git a/crypto/asymmetric_keys/x509_parser.h b/crypto/asymmetric_keys/x509_parser.h
index 3f0f0f0816215..3dfe6b5d6f0b9 100644
--- a/crypto/asymmetric_keys/x509_parser.h
+++ b/crypto/asymmetric_keys/x509_parser.h
@@ -19,9 +19,9 @@ struct x509_certificate {
struct public_key_signature sig; /* Signature parameters */
char *issuer; /* Name of certificate issuer */
char *subject; /* Name of certificate subject */
- struct asymmetric_key_id *id; /* Issuer + serial number */
- struct asymmetric_key_id *skid; /* Subject key identifier */
- struct asymmetric_key_id *authority; /* Authority key identifier */
+ struct asymmetric_key_id *id; /* Serial number + issuer */
+ struct asymmetric_key_id *skid; /* Subject + subjectKeyId (optional) */
+ struct asymmetric_key_id *authority; /* Authority key identifier (optional) */
struct tm valid_from;
struct tm valid_to;
const void *tbs; /* Signed data */
--
2.39.5