fixed checksum calc error in get usn

analogdevicesinc · Jun 20, 2024 · 3a2465d · 3a2465d
1 parent 2a9b954
commit 3a2465d
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Showing 4 changed files with 15 additions and 4 deletions.
diff --git a/Libraries/PeriphDrivers/Source/SYS/sys_me12.c b/Libraries/PeriphDrivers/Source/SYS/sys_me12.c
@@ -103,10 +103,12 @@ int MXC_SYS_GetUSN(uint8_t *usn, uint8_t *checksum)
         // Set NULL Key
         MXC_AES_SetExtKey((const void *)aes_key, MXC_AES_128BITS);
 
+        uint8_t usn_copy[MXC_SYS_USN_LEN] = {0}; 
+        memcpy(usn_copy, usn, MXC_SYS_USN_LEN);
         // Compute Checksum
         mxc_aes_req_t aes_req;
         aes_req.length = MXC_SYS_USN_CHECKSUM_LEN / 4;
-        aes_req.inputData = (uint32_t *)usn;
+        aes_req.inputData = (uint32_t *)usn_copy;
         aes_req.resultData = (uint32_t *)check_csum;
         aes_req.keySize = MXC_AES_128BITS;
         aes_req.encryption = MXC_AES_ENCRYPT_EXT_KEY;

diff --git a/Libraries/PeriphDrivers/Source/SYS/sys_me15.c b/Libraries/PeriphDrivers/Source/SYS/sys_me15.c
@@ -110,10 +110,13 @@ int MXC_SYS_GetUSN(uint8_t *usn, uint8_t *checksum)
         // Set NULL Key
         MXC_AES_SetExtKey((const void *)aes_key, MXC_AES_128BITS);
 
+        uint8_t usn_copy[MXC_SYS_USN_LEN] = {0}; 
+        memcpy(usn_copy, usn, MXC_SYS_USN_LEN);
+
         // Compute Checksum
         mxc_aes_req_t aes_req;
         aes_req.length = MXC_SYS_USN_CHECKSUM_LEN / 4;
-        aes_req.inputData = (uint32_t *)usn;
+        aes_req.inputData = (uint32_t *)usn_copy;
         aes_req.resultData = (uint32_t *)check_csum;
         aes_req.keySize = MXC_AES_128BITS;
         aes_req.encryption = MXC_AES_ENCRYPT_EXT_KEY;

diff --git a/Libraries/PeriphDrivers/Source/SYS/sys_me17.c b/Libraries/PeriphDrivers/Source/SYS/sys_me17.c
@@ -105,10 +105,13 @@ int MXC_SYS_GetUSN(uint8_t *usn, uint8_t *checksum)
         // Set NULL Key
         MXC_AES_SetExtKey((const void *)aes_key, MXC_AES_128BITS);
 
+        uint8_t usn_copy[MXC_SYS_USN_LEN] = {0}; 
+        memcpy(usn_copy, usn, MXC_SYS_USN_LEN);
+
         // Compute Checksum
         mxc_aes_req_t aes_req;
         aes_req.length = MXC_SYS_USN_CHECKSUM_LEN / 4;
-        aes_req.inputData = (uint32_t *)usn;
+        aes_req.inputData = (uint32_t *)usn_copy;
         aes_req.resultData = (uint32_t *)check_csum;
         aes_req.keySize = MXC_AES_128BITS;
         aes_req.encryption = MXC_AES_ENCRYPT_EXT_KEY;

diff --git a/Libraries/PeriphDrivers/Source/SYS/sys_me21.c b/Libraries/PeriphDrivers/Source/SYS/sys_me21.c
@@ -102,10 +102,13 @@ int MXC_SYS_GetUSN(uint8_t *usn, uint8_t *checksum)
         // Set NULL Key
         MXC_AES_SetExtKey((const void *)aes_key, MXC_AES_128BITS);
 
+        uint8_t usn_copy[MXC_SYS_USN_LEN] = {0}; 
+        memcpy(usn_copy, usn, MXC_SYS_USN_LEN);
+
         // Compute Checksum
         mxc_aes_req_t aes_req;
         aes_req.length = MXC_SYS_USN_CHECKSUM_LEN / 4;
-        aes_req.inputData = (uint32_t *)usn;
+        aes_req.inputData = (uint32_t *)usn_copy;
         aes_req.resultData = (uint32_t *)check_csum;
         aes_req.keySize = MXC_AES_128BITS;
         aes_req.encryption = MXC_AES_ENCRYPT_EXT_KEY;