Re: difference between RFC 1423 and X.509

> Nada-
>
> I think you may be confusing the object identifier for the algorithm
> with the object identifier for the ASN.1 module in which the algorithm
> is defined.
>
> The object identifier that you have cited above is for the
> "AlgorithmObjectIdentfiers" ASN.1 *module* which appears in X.509
> ANNEX H and defines the "rsa" algorithm.
>
> Looking in X.509 ANNEX H and in X.501 ANNEX B (which defines the
> "algorithm" object identifier) the "rsa" object identifier is defined
> as:
>
>    rsa OBJECT IDENTIFIER ::= {encryptionAlgorithm 1}
>    encryptionAlgorithm OBJECT IDENTIFIER ::= {algorithm 1}
>    algorithm OBJECT IDENTIFIER ::= {ds 8}
>    ds OBJECT IDENTIFIER ::= {joint-iso-ccitt ds(5)}
>
> If you put all these definitions together, you'll get the object
> identifier which is cited in RFC 1423.
>
> -DB



David,

Thank you for your explanation. I agree with you, I mixed up things.

Nada