Missing low level information ?

[sbernard31]

I'm implementing SenML Cbor and I need to check that some data are encoded in a specific way.

Eg. rfc8428§6. CBOR Representation (application/senml+cbor):

o For JSON Numbers, the CBOR representation can use integers,
floating-point numbers, or decimal fractions (CBOR Tag 4);
however, a representation SHOULD be chosen such that when the CBOR
value is converted to an IEEE double-precision, floating-point
value, it has exactly the same value as the original JSON Number
converted to that form. For the version number, only an unsigned
integer is allowed.

o Characters in the String Value are encoded using a text string
with a definite length (major type 3). Octets in the Data Value
are encoded using a byte string with a definite length (major type
2).

...

o For streaming SenSML in CBOR representation, the array containing
the records SHOULD be a CBOR array with an indefinite length; for
non-streaming SenML, an array with a definite length MUST be used.

Unless I missed something it is very impossible to check that ?