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67 bytes added ,  15:49, 12 August 2017
Line 592: Line 592:  
   
 
   
 
  // fuc5 crypt cxset instruction
 
  // fuc5 crypt cxset instruction
  // Set crypto transfer mode
+
  // The next 2 xfer instructions will be overridden
  *(u32 *)cx = 0x02;
+
// and target changes from DMA to crypto
 +
  cxset(0x02);
 
   
 
   
  u32 xfer_size_flag = 0x00060000;
+
  u32 crypt_reg_flag = 0x00060000;
 
  u32 blob2_hash_addr = key_buf + 0x30;
 
  u32 blob2_hash_addr = key_buf + 0x30;
 
   
 
   
  // Transfer data from/to Falcon
+
  // Transfer data to crypto register c6
  xdst(0, (blob2_hash_addr | xfer_size_flag));
+
  xdst(0, (blob2_hash_addr | crypt_reg_flag));
 
 
 
 
 
  // Wait for all data loads/stores to finish
 
  // Wait for all data loads/stores to finish
Line 605: Line 606:  
   
 
   
 
  // Save previous cauth value
 
  // Save previous cauth value
  u32 cauth_old = *(u32 *)cauth;
+
  u32 c_old = cauth_old;
 
   
 
   
 
  // fuc5 crypt cauth instruction
 
  // fuc5 crypt cauth instruction
 
  // Set auth_addr to blob2_virt_addr and auth_size to blob2_size
 
  // Set auth_addr to blob2_virt_addr and auth_size to blob2_size
  *(u32 *)cauth = ((blob2_virt_addr >> 0x08) | (blob2_size << 0x10));
+
  cauth((blob2_virt_addr >> 0x08) | (blob2_size << 0x10));
 
   
 
   
 
  u32 hovi_key_addr = 0;
 
  u32 hovi_key_addr = 0;
Line 630: Line 631:  
  memset(key_buf, 0, 0x7C);
 
  memset(key_buf, 0, 0x7C);
 
   
 
   
 +
// fuc5 crypt cauth instruction
 
  // Restore previous cauth value
 
  // Restore previous cauth value
  *(u32 *)cauth = cauth_old;
+
  cauth(c_old);
 
   
 
   
 
  return res;
 
  return res;

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