volume_id: hfs - calculate proper uuid

1 files changed, 30 insertions, 0 deletions

diff --git a/extras/volume_id/lib/md5.h b/extras/volume_id/lib/md5.h
new file mode 100644
index 0000000000..3d7bd39a57
--- /dev/null
+++ b/extras/volume_id/lib/md5.h
@@ -0,0 +1,30 @@
+/* 
+ * MD5 Message Digest Algorithm (RFC1321).
+ *
+ * Derived from cryptoapi implementation, originally based on the
+ * public domain implementation written by Colin Plumb in 1993.
+ *
+ * Copyright (c) Cryptoapi developers.
+ * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option) 
+ * any later version.
+ *
+ */
+
+#define MD5_DIGEST_SIZE		16
+#define MD5_HMAC_BLOCK_SIZE	64
+#define MD5_BLOCK_WORDS		16
+#define MD5_HASH_WORDS		4
+
+struct md5_ctx {
+	uint32_t hash[MD5_HASH_WORDS];
+	uint32_t block[MD5_BLOCK_WORDS];
+	uint64_t byte_count;
+};
+
+extern void md5_init(struct md5_ctx *mctx);
+extern void md5_update(struct md5_ctx *mctx, const uint8_t *data, unsigned int len);
+extern void md5_final(struct md5_ctx *mctx, uint8_t *out);