summaryrefslogtreecommitdiff
path: root/crypto/asymmetric_keys/pkcs7_parser.h
diff options
context:
space:
mode:
authorDavid Howells <dhowells@redhat.com>2014-07-01 16:40:19 +0100
committerDavid Howells <dhowells@redhat.com>2014-07-08 13:49:56 +0100
commit2e3fadbf730fd0d13c891d5e555af3e7f39ca3f4 (patch)
tree8618dea8bfd135a9e81650adc3080883410fd30e /crypto/asymmetric_keys/pkcs7_parser.h
parentace0107a3936774e9da2c30cbdc99ad13c103c10 (diff)
downloadlinux-2e3fadbf730fd0d13c891d5e555af3e7f39ca3f4.tar.gz
PKCS#7: Implement a parser [RFC 2315]
Implement a parser for a PKCS#7 signed-data message as described in part of RFC 2315. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Vivek Goyal <vgoyal@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'crypto/asymmetric_keys/pkcs7_parser.h')
-rw-r--r--crypto/asymmetric_keys/pkcs7_parser.h61
1 files changed, 61 insertions, 0 deletions
diff --git a/crypto/asymmetric_keys/pkcs7_parser.h b/crypto/asymmetric_keys/pkcs7_parser.h
new file mode 100644
index 000000000000..d25f4d15370f
--- /dev/null
+++ b/crypto/asymmetric_keys/pkcs7_parser.h
@@ -0,0 +1,61 @@
+/* PKCS#7 crypto data parser internal definitions
+ *
+ * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#include <linux/oid_registry.h>
+#include <crypto/pkcs7.h>
+#include "x509_parser.h"
+
+#define kenter(FMT, ...) \
+ pr_devel("==> %s("FMT")\n", __func__, ##__VA_ARGS__)
+#define kleave(FMT, ...) \
+ pr_devel("<== %s()"FMT"\n", __func__, ##__VA_ARGS__)
+
+struct pkcs7_signed_info {
+ struct pkcs7_signed_info *next;
+ struct x509_certificate *signer; /* Signing certificate (in msg->certs) */
+ unsigned index;
+ bool trusted;
+
+ /* Message digest - the digest of the Content Data (or NULL) */
+ const void *msgdigest;
+ unsigned msgdigest_len;
+
+ /* Authenticated Attribute data (or NULL) */
+ unsigned authattrs_len;
+ const void *authattrs;
+
+ /* Issuing cert serial number and issuer's name */
+ const void *raw_serial;
+ unsigned raw_serial_size;
+ unsigned raw_issuer_size;
+ const void *raw_issuer;
+
+ /* Message signature.
+ *
+ * This contains the generated digest of _either_ the Content Data or
+ * the Authenticated Attributes [RFC2315 9.3]. If the latter, one of
+ * the attributes contains the digest of the the Content Data within
+ * it.
+ */
+ struct public_key_signature sig;
+};
+
+struct pkcs7_message {
+ struct x509_certificate *certs; /* Certificate list */
+ struct x509_certificate *crl; /* Revocation list */
+ struct pkcs7_signed_info *signed_infos;
+
+ /* Content Data (or NULL) */
+ enum OID data_type; /* Type of Data */
+ size_t data_len; /* Length of Data */
+ size_t data_hdrlen; /* Length of Data ASN.1 header */
+ const void *data; /* Content Data (or 0) */
+};