Hello,
I have a doubt regarding the PER encoding of Information Object
Values.
FUNCTION ::= CLASS {
&ArgumentType,
&ResultType DEFAULT NULL,
&Errors ERROR NULL,
&Code INTEGER UNIQUE
}
The Above definition of FUNCTION is from the ASN.1 book by Olivier
Dubission.
funct1 FUNCTION ::= {
&ArgumentType SEQUENCE {a INTEGER, b INTEGER},
&ResultType INTEGER,
&Code 1
}
funct2 FUNCTION ::= {
&ArgumentType CHOICE {a INTEGER, b INTEGER},
&ResultType INTEGER,
&Code 2
}
MyFunction{FUNCTION:funct } ::= SEQUENCE {
opcode FUNCTION.&Code({funct}),
argument FUNCTION.&ArgumentType({funct} {@Opcode})
}
Is it true that argument field in MyFunction is encoded as an OpenType (ie)
Length encoding followed by the encoding of either SEQUENCE or INTEGER
depending on Opcode.
So Can I rewrite MyFunction as follows
MyFunction ::= SEQUENCE {
opcode INTEGER,
argument OCTET STRING
}
Thanks
krishna
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