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Message Authentication
Message authentication ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Authentication functions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
 
Message Authentication codes  ( MAC) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
MAC attacks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
MAC attack to find Key ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Mac attack without finding key ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
MAC requirements ,[object Object],[object Object],[object Object]
MAC based on DES
HASH functions ,[object Object],[object Object],[object Object],[object Object],[object Object]
Requirements of Hash function ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
 
What is Birthday attack? ,[object Object],[object Object],[object Object],[object Object]
Birthday Attack ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
More on Birthday attacker ,[object Object],[object Object],[object Object],[object Object],[object Object]
MD5
MD5 processing steps ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
Step 4 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
 
SHA-1
SHA-1 processing steps ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
 
 

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Message Authentication