1. Secure Execution Crypto Microprocessor
Abdel-Karim R. Al Tamimi

2. Contents What is secure execution ? What are the benefits ?
Implementation
Assembler
Questions ?
Abdel-Karim R. Al Tamimi

3. What is Secure Execution ?
Wants to Update
Sensors’ Code
010
110
Enc Code
Enc Code
Enc Code
Enc Code
Enc Code
110
011
001
Abdel-Karim R. Al Tamimi

4. Security down to instruction level. Every instruction is encrypted.
What are the benefits?
Security down to instruction level.
Every instruction is encrypted.
Built-in encryption capabilities.
Output can be encrypted
Effective software registration.
I need new software
Encrypted
Software
Description
Machine ID
Decrypt
&
Execute
Abdel-Karim R. Al Tamimi

5. Implementation Flow of data Decryption stage Encryption stage
Encrypted
Instruction
Encrypted
results
Encrypted Results
128-bit Instructions
32-bit Instructions
Results
Using
Rijndael
(AES)
Using
Rijndael
(AES)
Abdel-Karim R. Al Tamimi

6. Implementation   32-bit data 1010 1001 128-bit Enc. Data 32-bit
Abdel-Karim R. Al Tamimi

7. Abdel-Karim R. Al Tamimi

8. Question ?
Questions ?
Abdel-Karim R. Al Tamimi