Definitions: ref to X.680-9

One minor observation concerning the draft-dusse-smime-msg-05:

Section 1.3 ASN.1 definition should read as follows:  

ASN.1: Abstract Syntax Notation One, as defined in ITU-T X.680-3. 
(versus CCITT X.680-9)

But,

1) X.683 should not be referenced since parameterized types are not
used.

2) X.680-2 do not support anymore "ANY" or "ANY DEFINED BY".  These
notations were replaced by the information object class notation.  The
draft may be rewritten to align itself to X.680-2 (see below) or the
draft would indicate that ASN.1 is defined according to X.208.

Instead of having (see section A):

SMIMECapability ::= SEQUENCE {
    capabilityID OBJECT IDENTIFIER,
    parameters OPTIONAL ANY DEFINED BY capabilityID }  

the following would be used (according to X.680-2):

SMIMECapability ::= SEQUENCE {
    capabilityID CAPABILITY.&id ({SupportedCapabilities}),
    parameters CAPABILITY.&Parameter
({SupportedCapabilities}{(_at_)capabilityID}) }      

First, the following information object class would be defined:

CAPABILITY CLASS ::= {
        &id     OBJECT IDENTIFIER UNIQUE,
        &Parameter      
}
WITH SYNTAX
{
        ID      &id
        [PARAMETER &Parameter]
}

Each capability would then be defined:

RC2-CBC OBJECT IDENTIFIER ::=
    {iso(1) member-body(2) US(840) rsadsi(113549) encryptionAlgorithm(3)
2}

SMIMECapabilitiesParametersForRC2CBC ::= INTEGER

rc2-CBC CAPABILITY ::= {
        ID              RC2-CBC
        PARAMETER       SMIMECapabilitiesParametersForRC2CBC
}

an other example:

DES-CBC OBJECT IDENTIFIER ::=
    {iso(1) identified-organization(3) oiw(14) secsig(3) algorithm(2) 7}

des-cbc CAPABILITY ::= {
        ID              DES-CBC
-- no parameter
}

Finally, you would have something like:

SupportedCapabilities CAPABILITY ::= {rc2-CBC | des-cbc}  -- more
capabilities would exist...
-- 
Y. Theriault, Capt
Hardware Engineer
Project Management Office
Defence Message Handling System
Department of National Defence
phone:  995-6476
fax  :  995-6456
e-mail: aa862(_at_)issc(_dot_)debbs(_dot_)ndhq(_dot_)dnd(_dot_)ca