1. INTRODUCTION  
General Terms  
Keywords

2. SYMMETRIC ALGORITHMS  
2.1 Criteria  
2.1.1 Architecture  
2.1.2 Security  
2.1.3 Flexibility  
2.1.4 Scalability  
2.1.5 Limitations (Known Attacks)  
2.2 Assessment Methodology

3. ALGORITHM REVIEW  
3.1 Overview  
3.2 Architecture  
3.3 Security  
3.4 Scalability  
3.5 Flexibility  
3.6 Limitation  

4. COMPARATIVE ANALYSIS

5. CONCLUSION