1 files changed, 80 insertions, 0 deletions
diff --git a/src/crypto/ecb.c b/src/crypto/ecb.c
new file mode 100644
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--- /dev/null
+++ b/src/crypto/ecb.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2009 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * 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 any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ * You can also choose to distribute this program under the terms of
+ * the Unmodified Binary Distribution Licence (as given in the file
+ * COPYING.UBDL), provided that you have satisfied its requirements.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+
+#include <assert.h>
+#include <ipxe/crypto.h>
+#include <ipxe/ecb.h>
+
+/** @file
+ *
+ * Electronic codebook (ECB)
+ *
+ */
+
+/**
+ * Encrypt data
+ *
+ * @v ctx		Context
+ * @v src		Data to encrypt
+ * @v dst		Buffer for encrypted data
+ * @v len		Length of data
+ * @v raw_cipher	Underlying cipher algorithm
+ */
+void ecb_encrypt ( void *ctx, const void *src, void *dst, size_t len,
+		   struct cipher_algorithm *raw_cipher ) {
+	size_t blocksize = raw_cipher->blocksize;
+
+	assert ( ( len % blocksize ) == 0 );
+
+	while ( len ) {
+		cipher_encrypt ( raw_cipher, ctx, src, dst, blocksize );
+		dst += blocksize;
+		src += blocksize;
+		len -= blocksize;
+	}
+}
+
+/**
+ * Decrypt data
+ *
+ * @v ctx		Context
+ * @v src		Data to decrypt
+ * @v dst		Buffer for decrypted data
+ * @v len		Length of data
+ * @v raw_cipher	Underlying cipher algorithm
+ */
+void ecb_decrypt ( void *ctx, const void *src, void *dst, size_t len,
+		   struct cipher_algorithm *raw_cipher ) {
+	size_t blocksize = raw_cipher->blocksize;
+
+	assert ( ( len % blocksize ) == 0 );
+
+	while ( len ) {
+		cipher_decrypt ( raw_cipher, ctx, src, dst, blocksize );
+		dst += blocksize;
+		src += blocksize;
+		len -= blocksize;
+	}
+}