JT/T 809加密算法,加密解密为同一算法 Java实现

Const unsigned uint32_t M1 =A; Const unsigned uint32_t IA1 =B; Const unsigned uint32_t IC1 =C; Void encrypt(uint32_t key, unsigned char* buffer, uint32_t size ) { uint32_t idx = 0; if( 0 = = key ) { key = 1; } uint32_t mkey = M1; if (0 = = mkey ) { mkey = 1; } while( idx < size ) { key = IA1 * ( key % mkey ) + IC1; buffer[idx++] ^= (unsigned char)((key>>20)&0xFF); } }