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authorpeterbell10 <peterbell10@live.co.uk>2017-08-30 16:00:06 +0200
committerTiger Wang <ziwei.tiger@outlook.com>2017-08-30 16:00:06 +0200
commit84941bcc9f25cbe3fd3b2604080d0a1cfd8fbaa7 (patch)
treeaa1648c2ba260b8576673677435481d371eec7b0 /src/mbedTLS++/AesCfb128Encryptor.cpp
parentUpdate core plugins to latest version (#3951) (diff)
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Diffstat (limited to 'src/mbedTLS++/AesCfb128Encryptor.cpp')
-rw-r--r--src/mbedTLS++/AesCfb128Encryptor.cpp55
1 files changed, 55 insertions, 0 deletions
diff --git a/src/mbedTLS++/AesCfb128Encryptor.cpp b/src/mbedTLS++/AesCfb128Encryptor.cpp
new file mode 100644
index 000000000..11582fc19
--- /dev/null
+++ b/src/mbedTLS++/AesCfb128Encryptor.cpp
@@ -0,0 +1,55 @@
+
+// AesCfb128Encryptor.cpp
+
+// Implements the cAesCfb128Encryptor class encrypting data using AES CFB-128
+
+#include "Globals.h"
+#include "AesCfb128Encryptor.h"
+
+
+
+
+
+cAesCfb128Encryptor::cAesCfb128Encryptor(void):
+ m_IsValid(false)
+{
+ mbedtls_aes_init(&m_Aes);
+}
+
+
+
+
+
+cAesCfb128Encryptor::~cAesCfb128Encryptor()
+{
+ // Clear the leftover in-memory data, so that they can't be accessed by a backdoor
+ mbedtls_aes_free(&m_Aes);
+}
+
+
+
+
+
+void cAesCfb128Encryptor::Init(const Byte a_Key[16], const Byte a_IV[16])
+{
+ ASSERT(!IsValid()); // Cannot Init twice
+
+ memcpy(m_IV, a_IV, 16);
+ mbedtls_aes_setkey_enc(&m_Aes, a_Key, 128);
+ m_IsValid = true;
+}
+
+
+
+
+
+void cAesCfb128Encryptor::ProcessData(Byte * a_EncryptedOut, const Byte * a_PlainIn, size_t a_Length)
+{
+ ASSERT(IsValid()); // Must Init() first
+ mbedtls_aes_crypt_cfb8(&m_Aes, MBEDTLS_AES_ENCRYPT, a_Length, m_IV, a_PlainIn, a_EncryptedOut);
+}
+
+
+
+
+