RE: Re: key usage - key encipherment or data encipherment

[<diegofv@xxxxxxxxxxx>]

IMO password or PIN is also considered as a secret key,
then which applications or protocols are demanding the dataEncipherment 
bit?

Thanks

Diego

----- Mensaje Original -----
Remitente: Russ Housley housley@xxxxxxxxxxxx
Destinatario: ietf-pkix@xxxxxxxx
Fecha: Jueves, Mayo 12, 2005 9:21pm
Asunto: Re: key usage - key encipherment or data encipherment

>
>     The keyEncipherment bit is asserted when the subject public 
>key is
>     used for enciphering private or secret keys, i.e., for key 
>transport.      For example, this bit shall be set when a RSA public 
>key is to be
>     used for encrypting a symmetric content-decryption key or an
>     asymmetric private key.
>
>    The dataEncipherment bit is asserted when the subject public key
>    is used for directly enciphering raw user data without the use of
>    an intermediate symmetric cipher. Note that the use of this
>    bit is extremely uncommon; almost all applications use
>    key transport or key agreement to establish a symmetric key.
>