1 files changed, 94 insertions, 0 deletions
diff --git a/lib/keychain.h b/lib/keychain.h
new file mode 100644
index 0000000..be93275
--- /dev/null
+++ b/lib/keychain.h
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* key-chain for authentication.
+ * Copyright (C) 2000 Kunihiro Ishiguro
+ */
+
+#ifndef _ZEBRA_KEYCHAIN_H
+#define _ZEBRA_KEYCHAIN_H
+
+#include "qobj.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum keychain_hash_algo {
+	KEYCHAIN_ALGO_NULL,
+	KEYCHAIN_ALGO_MD5,
+	KEYCHAIN_ALGO_HMAC_SHA1,
+	KEYCHAIN_ALGO_HMAC_SHA256,
+	KEYCHAIN_ALGO_HMAC_SHA384,
+	KEYCHAIN_ALGO_HMAC_SHA512,
+	KEYCHAIN_ALGO_MAX
+};
+
+#define KEYCHAIN_MD5_HASH_SIZE 16
+#define KEYCHAIN_HMAC_SHA1_HASH_SIZE 20
+#define KEYCHAIN_HMAC_SHA256_HASH_SIZE 32
+#define KEYCHAIN_HMAC_SHA384_HASH_SIZE 48
+#define KEYCHAIN_HMAC_SHA512_HASH_SIZE 64
+#define KEYCHAIN_MAX_HASH_SIZE 64
+
+#define KEYCHAIN_ALGO_MD5_INTERNAL_BLK_SIZE 16
+#define KEYCHAIN_ALGO_SHA1_INTERNAL_BLK_SIZE 64
+#define KEYCHAIN_ALGO_SHA256_INTERNAL_BLK_SIZE 64
+#define KEYCHAIN_ALGO_SHA384_INTERNAL_BLK_SIZE 128
+#define KEYCHAIN_ALGO_SHA512_INTERNAL_BLK_SIZE 128
+#define KEYCHAIN_ALGO_MAX_INTERNAL_BLK_SIZE 128
+
+struct keychain_algo_info {
+	enum keychain_hash_algo key;
+	const char *name;
+	uint16_t length;
+	uint16_t block;
+	const char *desc;
+};
+
+extern const struct keychain_algo_info algo_info[];
+uint16_t keychain_get_block_size(enum keychain_hash_algo key);
+uint16_t keychain_get_hash_len(enum keychain_hash_algo key);
+const char *keychain_get_description(enum keychain_hash_algo key);
+struct keychain_algo_info
+keychain_get_hash_algo_info(enum keychain_hash_algo key);
+enum keychain_hash_algo keychain_get_algo_id_by_name(const char *name);
+const char *keychain_get_algo_name_by_id(enum keychain_hash_algo key);
+
+struct keychain {
+	char *name;
+
+	struct list *key;
+
+	QOBJ_FIELDS;
+};
+DECLARE_QOBJ_TYPE(keychain);
+
+struct key_range {
+	time_t start;
+	time_t end;
+
+	uint8_t duration;
+};
+
+struct key {
+	uint32_t index;
+
+	char *string;
+	enum keychain_hash_algo hash_algo;
+	struct key_range send;
+	struct key_range accept;
+
+	QOBJ_FIELDS;
+};
+DECLARE_QOBJ_TYPE(key);
+
+extern void keychain_init(void);
+extern struct keychain *keychain_lookup(const char *);
+extern struct key *key_lookup_for_accept(const struct keychain *, uint32_t);
+extern struct key *key_match_for_accept(const struct keychain *, const char *);
+extern struct key *key_lookup_for_send(const struct keychain *);
+const char *keychain_algo_str(enum keychain_hash_algo hash_algo);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _ZEBRA_KEYCHAIN_H */