Hello,

SUB:problem in RESPONCE finding in MD5 algorithm :-- 


I read document in RFC 1321 .But i have some ploblem i
don't understand in 

request-digest  =<"> < KD ( H(A1), unq(nonce-value)
":" H(A2) ) ><">

request-digest  = "KD(H(A1),unq(nonce-value) ":" H(A2)
)"

A1 = unq(username-value) ":" unq(realm-value) ":"
passwd

A2 = Method ":" digest-uri-value

what is  KD? and H?

weather This  equation is correct or not ?

KD(H(A1), unq(nonce-value) ":" H(A2)) = MD5(H(A1),
unq(nonce-value) ":" H(A2))



Here i am sending parameters for responce finding..

user name :2005
password :2005
realm="sip.vsnl.com", nonce="3e152daa", algorithm=MD5
uri="sip:sip.vsnl.com"

request-digest  = "KD(H(A1),unq(nonce-value) ":" H(A2)
)"

A1 = unq(username-value) ":" unq(realm-value) ":"
passwd

A2 = Method ":" digest-uri-value

A1=2005:sip.vsnl.com:2005
A1=2e4016ae5add9b99591266a8c5a2d3fb

A2=sip:sip.vsnl.com
A2=5ee9c2fbd152c8695137824741a0997e


responce =    H(A1:nonce:A2)

responce=  "58e98374e7fc54cfd1124d22533afb13"   is not
correct

actual value of
response="62a12f415d91cb87ae0beac440de5cd4"


How i can get correct value of Responce?
Is there any modifications are required in above
equation.


please provide solution for above problem..

Thankig you
krishna




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