change key for a new round of experiments

c8_remote/include/bootrom_addr.h

@@ -7,6 +7,9 @@
 
 /* Crypto */
 #define ADDR_HARDWARE_AES                   0x100000f0c
+#define ADDR_GET_RANDOM                     0x1000113e0
+#define ADDR_GET_ENTROPY                    0x1000013d4
+#define ADDR_SHA1                           0x10000cc90
 
 /* Timing */
 #define ADDR_CLOCK_GATE                     0x100009d4c

c8_remote/lib/payload/include/bootrom_func.h

@@ -14,6 +14,21 @@ static inline int hardware_aes(unsigned long long cmd,
     return ((BOOTROM_FUNC_I) ADDR_HARDWARE_AES)(cmd, src, dst, len, opts, key, iv);
 }
 
+static inline int get_random(void *buf, int len)
+{
+    return ((BOOTROM_FUNC_I) ADDR_GET_RANDOM)(buf, len);
+}
+
+static inline unsigned int get_entropy()
+{
+    return ((BOOTROM_FUNC_I) ADDR_GET_ENTROPY)();
+}
+
+static inline void sha1(void *src, int len, void *dst)
+{
+    return ((BOOTROM_FUNC_V) ADDR_SHA1)(src, len, dst);
+}
+
 /* Timing */
 static inline int clock_gate(int device, int power)
 {

c8_remote/main.c

@@ -369,7 +369,7 @@ DEV_PTR_T aes_sw_bernstein(struct pwned_device *dev)
 
     unsigned char data[16];
     unsigned char key[16];
-    memset(key, 0, 16);
+    memset(key, 0x1, 16);
 
     if(IS_CHECKM8_FAIL(open_device_session(dev)))
     {