Some common issues relate to incorrect quoting and un-quoting of values within
calculation and/or headers.
request-digest = <"> < KD ( H(A1), unq(nonce-value)
":" nc-value
":" unq(cnonce-value)
":" unq(qop-value)
":" H(A2)
) <">
A1 = unq(username-value) ":" unq(realm-value) ":" passwd
A2 = Method ":" digest-uri-value
> -----Original Message-----
> From: [email protected] [mailto:sip-
> [email protected]] On Behalf Of cool goose
> Sent: Friday, March 06, 2009 12:36 PM
> To: [email protected]
> Subject: [Sip-implementors] Digest Authentication
>
> Guys,
>
> Can someone explain how an digest response should be calculated when UAC
> receives 401 Unauthorized? I read RFC 2617 and this what I am implementing
>
> If "qop" value is "auth":
>
> respone = MD5(concat(MD5(username":"realm":"password)":" nonce-value ":"
> nc-value ":" cnonce-value ":" qop-value ":" MD5(Method ":" Digest Uri)))
>
>
> and the UAS responds with 403 Forbidden.
>
> Thank You,
> CoolGoose.
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