MetadataProvider and update

Brent Putman putmanb at
Thu May 11 20:32:18 EDT 2017

On 5/11/17 7:23 PM, Tom Scavo wrote:
> On Thu, May 11, 2017 at 7:00 PM, Brent Putman <putmanb at> wrote:
>> However as they mention in JWS [1], it's trivial to implement base64url in
>> terms of using existing base64 routines + a bit of search/replace.  So for
>> example a little wrapper script around the base64 cli tool would probably do
>> the trick.
>> [1]
> Are you suggesting the following:
> 1. Apply base64
> 2. Translate '/' and '+' characters
Dont't forget:

3. Strip trailing '='.

That's for encoding.

Decoding is just the reverse order.  Have to do a little modular
arithmetic to add the appropriate number of '=' padding at the end.

> The latter could be done with the tr command, I suppose.

Or perl, sed, or other things that can act as unix cmdline filters.  Or
wrap the whole base64 call with perl, python, etc.

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