The code_challenge and code_challenge_method parameter names predate calling 
the spec PKCE.  

Given that some of us deployed early versions of PKCE in products and 
opensource to mitigate the problem before the spec was completed we decided not 
to rename the parameter names from code_verifier_method to 
pkce_verifier_method.  

For consistency we should stick with code_verifier_methods_supported in 
discovery.

John B.

> On Jan 21, 2016, at 3:12 AM, William Denniss <[email protected]> wrote:
> 
> "code_challenge_methods_supported" definitely works for me.
> 
> Any objections to moving forward with that? I would like to update our 
> discovery doc shortly.
> 
> On Thu, Jan 21, 2016 at 1:37 PM, Nat Sakimura <[email protected] 
> <mailto:[email protected]>> wrote:
> Ah, OK. That's actually reasonable. 
> 
> 2016年1月21日(木) 9:31 nov matake <[email protected] <mailto:[email protected]>>:
> I prefer “code_challenge_methods_supported”, since the registered parameter 
> name is “code_challenge_method”, not “pkce_method".
> 
>> On Jan 19, 2016, at 11:58, William Denniss <[email protected] 
>> <mailto:[email protected]>> wrote:
>> 
>> Seems like we agree this should be added. How should it look?
>> 
>> Two ideas:
>> 
>> "code_challenge_methods_supported": ["plain", "S256"]
>> 
>> or
>> 
>> "pkce_methods_supported": ["plain", "S256"]
>> 
>> 
>> 
>> On Wed, Jan 6, 2016 at 9:59 AM, Torsten Lodderstedt <[email protected] 
>> <mailto:[email protected]>> wrote:
>> +1
>> 
>> 
>> Am 06.01.2016 um 18:25 schrieb William Denniss:
>>> +1
>>> 
>>> On Wed, Jan 6, 2016 at 6:40 AM, John Bradley <[email protected] 
>>> <mailto:[email protected]>> wrote:
>>> Good point.  Now that PKCE is a RFC we should add it to discovery.
>>> 
>>> John B.
>>> > On Jan 6, 2016, at 9:29 AM, Vladimir Dzhuvinov <[email protected] 
>>> > <mailto:[email protected]>> wrote:
>>> >
>>> > I just noticed PKCE support is missing from the discovery metadata.
>>> >
>>> > Is it a good idea to add it?
>>> >
>>> > Cheers,
>>> >
>>> > Vladimir
>>> >
>>> > --
>>> > Vladimir Dzhuvinov
>>> >
>>> >
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