3-DES and SHA-1-HMAC

Discussion in 'Cisco' started by Marco, Oct 23, 2003.

  1. Marco

    Marco Guest

    I have a problem.

    I' m using IPSEC with SECURE SERVER built-in policy.

    This policy use 3DES and SHA-1-HMAC.

    I need to know if 3DES use 112 effective bits o 168 effective bits?

    I read something but I' m not sure that refers to this policy...

    And I think that SHA-1-HMAC use 160 bits without cut to 96 bits.

    (If I have SHA-1-HMAC-t the output value have t bits - t > 80. But I
    don' t find anything of sure about this windows policy)

    Can anybody help me?

    Marco
     
    Marco, Oct 23, 2003
    #1
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