Mfp commands (#698)

[proxmark3-svn] / common / polarssl / libpcrypto.c

diff --git a/common/polarssl/libpcrypto.c b/common/polarssl/libpcrypto.c
new file mode 100644 (file)
index 0000000..032c3a1
--- /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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