Import BSDDB 4.7.25 (as of svn r89086)

dbinc/crypto.h

@@ -0,0 +1,85 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1996,2008 Oracle.  All rights reserved.
+ *
+ * $Id: crypto.h 63573 2008-05-23 21:43:21Z trent.nelson $
+ */
+
+#ifndef	_DB_CRYPTO_H_
+#define	_DB_CRYPTO_H_
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+/*
+ * !!!
+ * These are the internal representations of the algorithm flags.
+ * They are used in both the DB_CIPHER structure and the CIPHER
+ * structure so we can tell if users specified both passwd and alg
+ * correctly.
+ *
+ * CIPHER_ANY is used when an app joins an existing env but doesn't
+ * know the algorithm originally used.  This is only valid in the
+ * DB_CIPHER structure until we open and can set the alg.
+ */
+/*
+ * We store the algorithm in an 8-bit field on the meta-page.  So we
+ * use a numeric value, not bit fields.
+ * now we are limited to 8 algorithms before we cannot use bits and
+ * need numeric values.  That should be plenty.  It is okay for the
+ * CIPHER_ANY flag to go beyond that since that is never stored on disk.
+ */
+
+/*
+ * This structure is per-process, not in shared memory.
+ */
+struct __db_cipher {
+	u_int	(*adj_size) __P((size_t));
+	int	(*close) __P((ENV *, void *));
+	int	(*decrypt) __P((ENV *, void *, void *, u_int8_t *, size_t));
+	int	(*encrypt) __P((ENV *, void *, void *, u_int8_t *, size_t));
+	int	(*init) __P((ENV *, DB_CIPHER *));
+
+	u_int8_t mac_key[DB_MAC_KEY];	/* MAC key. */
+	void	*data;			/* Algorithm-specific information */
+
+#define	CIPHER_AES	1		/* AES algorithm */
+	u_int8_t	alg;		/* Algorithm used - See above */
+	u_int8_t	spare[3];	/* Spares */
+
+#define	CIPHER_ANY	0x00000001	/* Only for DB_CIPHER */
+	u_int32_t	flags;		/* Other flags */
+};
+
+#ifdef HAVE_CRYPTO
+
+#include "crypto/rijndael/rijndael-api-fst.h"
+
+/*
+ * Shared ciphering structure
+ * No mutex needed because all information is read-only after creation.
+ */
+typedef struct __cipher {
+	roff_t		passwd;		/* Offset to shared passwd */
+	size_t		passwd_len;	/* Length of passwd */
+	u_int32_t	flags;		/* Algorithm used - see above */
+} CIPHER;
+
+#define	DB_AES_KEYLEN	128	/* AES key length */
+#define	DB_AES_CHUNK	16	/* AES byte unit size */
+
+typedef struct __aes_cipher {
+	keyInstance	decrypt_ki;	/* Decryption key instance */
+	keyInstance	encrypt_ki;	/* Encryption key instance */
+	u_int32_t	flags;		/* AES-specific flags */
+} AES_CIPHER;
+
+#include "dbinc_auto/crypto_ext.h"
+#endif /* HAVE_CRYPTO */
+
+#if defined(__cplusplus)
+}
+#endif
+#endif /* !_DB_CRYPTO_H_ */