1     Scope 
 2     References 
 3     Terms and definitions       
 4     Abbreviations and acronyms        
 5     Conventions     
 6     Secure password-based authentication protocol with key exchange (SPAK)         
        6.1     Problems of plaintext password-based authentication          
        6.2     Operational procedure of SPAK    
        6.3     Basic characteristics of SPAK       
 7     Requirements for SPAK  
        7.1     Framework requirement     
        7.2     Protocol requirement         
 8     Criteria for choosing a suitable SPAK      
Annex A – SPAK framework requirements    
Appendix I – Comparison of existing SPAKs in terms of performance  and underlying PKC    
Appendix II – Comparison of existing SPAK protocols in terms of several requirements