[Cryptography] Is ASN.1 still the thing?

[James A. Donald]

On 11/14/2017 12:30 PM, Nico Williams wrote:
> In any case, we've learned not to depend on canonical encodings, so
> canonical encodings are neither here nor there.  We just don't build
> protocols/applications that require repeatable canonical encodings.

I rather think we do depend on repeatable canonical encoding - I want 
separate code bases on separate machines to generate the equivalent 
checksum for the same transaction, so that they will know it is the same 
transaction, and the only value that I derive from ASN.1 is canonical 
per, so that I can define a canonical checksum for a data structure that 
is likely to be internally different on different machines with 
different compilers.

I can get that trivially from XRD, but getting it from ASN.1 seems to 
require proprietary tools with arcane licensing requirements that need a 
room full of lawyers.

I cannot find an open source tool that generates canonical per.

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