Added XTEA and Pearson Hashing.

Improved message encryption for RF24.
2018-09-22 22:05:53 +02:00
parent 15351cdd5b
commit b37cd045d5
12 changed files with 270 additions and 7 deletions
@@ -0,0 +1,29 @@
+#ifndef XTEA_H_
+#define XTEA_H_
+
+#include <stdint.h> 
+ 
+
+#define XTEA_CYCLES 32
+
+
+class XTEA {
+public:
+	void setKey(void* key);
+
+	void setIV(void* iv);
+	void setIV(uint32_t ivh, uint32_t ivl);
+
+	void cbc_encrypt(void *dest, const void *plain, uint16_t nr_blocks);
+	void cbc_decrypt(void *dest, const void *cipher, uint16_t nr_blocks);
+
+	void encrypt_block(void *dest, const void *block);
+	void decrypt_block(void *dest, const void *block);
+
+private:
+	uint8_t _key[16] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10 };
+	uint8_t _vector[8] = {0};
+};
+
+
+#endif /*XTEA_H_*/