X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/3685f89cbd6c524c91b41bd41bd3db038b3f1b43..ae3340a0fb04bf8f8b8c874e0859d7d0886e2db1:/common/polarssl/libpcrypto.c

diff --git a/common/polarssl/libpcrypto.c b/common/polarssl/libpcrypto.c
new file mode 100644
index 00000000..032c3a18
--- /dev/null
+++ b/common/polarssl/libpcrypto.c
@@ -0,0 +1,44 @@
+//-----------------------------------------------------------------------------
+// Copyright (C) 2018 Merlok
+//
+// This code is licensed to you under the terms of the GNU GPL, version 2 or,
+// at your option, any later version. See the LICENSE.txt file for the text of
+// the license.
+//-----------------------------------------------------------------------------
+// crypto commands
+//-----------------------------------------------------------------------------
+
+#include "polarssl/libpcrypto.h"
+#include <polarssl/aes.h>
+
+int aes_encode(uint8_t *iv, uint8_t *key, uint8_t *input, uint8_t *output, int length){
+	uint8_t iiv[16] = {0};
+	if (iv)
+		memcpy(iiv, iv, 16);
+	
+	aes_context aes;
+	aes_init(&aes);
+	if (aes_setkey_enc(&aes, key, 128))
+		return 1;
+	if (aes_crypt_cbc(&aes, AES_ENCRYPT, length, iiv, input, output))
+		return 2;
+	aes_free(&aes);
+
+	return 0;
+}
+
+int aes_decode(uint8_t *iv, uint8_t *key, uint8_t *input, uint8_t *output, int length){
+	uint8_t iiv[16] = {0};
+	if (iv)
+		memcpy(iiv, iv, 16);
+	
+	aes_context aes;
+	aes_init(&aes);
+	if (aes_setkey_dec(&aes, key, 128))
+		return 1;
+	if (aes_crypt_cbc(&aes, AES_DECRYPT, length, iiv, input, output))
+		return 2;
+	aes_free(&aes);
+
+	return 0;
+}
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