1 files changed, 74 insertions, 0 deletions
diff --git a/include/crypto/backport-public_key.h b/include/crypto/backport-public_key.h
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+++ b/include/crypto/backport-public_key.h
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+/* Asymmetric public-key algorithm definitions
+ *
+ * See Documentation/crypto/asymmetric-keys.txt
+ *
+ * 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.
+ */
+
+#ifndef _LINUX_PUBLIC_KEY_H
+#define _LINUX_PUBLIC_KEY_H
+
+/*
+ * Cryptographic data for the public-key subtype of the asymmetric key type.
+ *
+ * Note that this may include private part of the key as well as the public
+ * part.
+ */
+struct public_key {
+	void *key;
+	u32 keylen;
+	const char *id_type;
+	const char *pkey_algo;
+};
+
+extern void public_key_free(struct public_key *key);
+
+/*
+ * Public key cryptography signature data
+ */
+struct public_key_signature {
+	struct asymmetric_key_id *auth_ids[2];
+	u8 *s;			/* Signature */
+	u32 s_size;		/* Number of bytes in signature */
+	u8 *digest;
+	u8 digest_size;		/* Number of bytes in digest */
+	const char *pkey_algo;
+	const char *hash_algo;
+};
+
+extern void public_key_signature_free(struct public_key_signature *sig);
+
+extern struct asymmetric_key_subtype public_key_subtype;
+
+struct key;
+struct key_type;
+union key_payload;
+
+extern int restrict_link_by_signature(struct key *dest_keyring,
+				      const struct key_type *type,
+				      const union key_payload *payload,
+				      struct key *trust_keyring);
+
+extern int restrict_link_by_key_or_keyring(struct key *dest_keyring,
+					   const struct key_type *type,
+					   const union key_payload *payload,
+					   struct key *trusted);
+
+extern int restrict_link_by_key_or_keyring_chain(struct key *trust_keyring,
+						 const struct key_type *type,
+						 const union key_payload *payload,
+						 struct key *trusted);
+
+extern int verify_signature(const struct key *key,
+			    const struct public_key_signature *sig);
+
+int public_key_verify_signature(const struct public_key *pkey,
+				const struct public_key_signature *sig);
+
+#endif /* _LINUX_PUBLIC_KEY_H */