1 files changed, 79 insertions, 0 deletions
diff --git a/sys/dev/random/hash.c b/sys/dev/random/hash.c
new file mode 100644
index 0000000..b6bf4b2
--- /dev/null
+++ b/sys/dev/random/hash.c
@@ -0,0 +1,79 @@
+/*-
+ * Copyright (c) 2000 Mark R V Murray
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer
+ *    in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+
+#include <crypto/rijndael/rijndael.h>
+#include <crypto/sha2/sha2.h>
+
+#include <dev/random/hash.h>
+
+/* initialise the hash */
+void
+yarrow_hash_init(struct yarrowhash *context)
+{
+	SHA256_Init(&context->sha);
+}
+
+/* iterate the hash */
+void
+yarrow_hash_iterate(struct yarrowhash *context, void *data, size_t size)
+{
+	SHA256_Update(&context->sha, data, size);
+}
+
+/* Conclude by returning the hash in the supplied /buf/ which must be
+ * KEYSIZE bytes long.
+ */
+void
+yarrow_hash_finish(struct yarrowhash *context, void *buf)
+{
+	SHA256_Final(buf, &context->sha);
+}
+
+/* Initialise the encryption routine by setting up the key schedule
+ * from the supplied /data/ which must be KEYSIZE bytes of binary
+ * data.
+ */
+void
+yarrow_encrypt_init(struct yarrowkey *context, void *data)
+{
+	rijndael_cipherInit(&context->cipher, MODE_CBC, NULL);
+	rijndael_makeKey(&context->key, DIR_ENCRYPT, KEYSIZE*8, data);
+}
+
+/* Encrypt the supplied data using the key schedule preset in the context.
+ * KEYSIZE bytes are encrypted from /d_in/ to /d_out/.
+ */
+void
+yarrow_encrypt(struct yarrowkey *context, void *d_in, void *d_out)
+{
+	rijndael_blockEncrypt(&context->cipher, &context->key, d_in,
+	    KEYSIZE*8, d_out);
+}