beginning of `communication.cc`

1 files changed, 58 insertions, 0 deletions

diff --git a/src/crypto.hh b/src/crypto.hh
new file mode 100644
index 0000000..e90996c
--- /dev/null
+++ b/src/crypto.hh
@@ -0,0 +1,58 @@
+#ifndef TIBIA_CRYPTO_HH_
+#define TIBIA_CRYPTO_HH_ 1
+
+#include "common.hh"
+
+// TODO(fusion): We might want to scrap this implementation and use OpenSSL instead.
+
+struct vlong_flex_unit{
+    uint32 n;
+    uint32 *a;
+    uint32 z;
+};
+
+struct vlong_value: vlong_flex_unit {
+    uint32 share;
+};
+
+struct vlong{
+    vlong_value *value;
+    int negative;
+};
+
+struct vlong_montgomery{
+    vlong R;
+    vlong R1;
+    vlong m;
+    vlong n1;
+    vlong T;
+    vlong k;
+    uint32 N;
+};
+
+struct TRSAPrivateKey{
+	TRSAPrivateKey(void);
+	~TRSAPrivateKey(void);
+	void decrypt(uint8 *Data); // single 128 bytes block
+
+	// DATA
+	// =================
+    vlong m_PrimeP;
+    vlong m_PrimeQ;
+    vlong m_U;
+    vlong m_DP;
+    vlong m_DQ;
+};
+
+struct TXTEASymmetricKey{
+	TXTEASymmetricKey(void);
+	~TXTEASymmetricKey(void);
+	void encrypt(uint8 *Data); // single 8 bytes block
+	void decrypt(uint8 *Data); // single 8 bytes block
+
+	// DATA
+	// =================
+	uint32 m_SymmetricKey[4];
+};
+
+#endif //TIBIA_CRYPTO_HH_