RFR[11] JDK-8146293 "Add Support for RSA-PSS Signature Algorithm as in PKCS#1 v2.2"

Sean Mullan sean.mullan at oracle.com
Wed Apr 18 18:25:32 UTC 2018


On 4/18/18 12:52 PM, Xuelei Fan wrote:
> The algorithm name decomposer implementation for algorithm restrictions 
> depends on the pattern:
>     <digest>with<encryption>
> 
> Using the same "encryption" name for signature and PKCS#1 could be 
> easier for applications if there is a need  to decompose the algorithms.

Hmm, so do you mean this is a problem if you specify the signature 
algorithm as "RSA-PSS" and require that the digest algorithm be 
specified as a parameter to the API? Or something else? Not sure I 
understand you but I have a feeling you are raising a good point ...

--Sean

> 
> Xuelei
> 
> On 4/16/2018 11:40 AM, Sean Mullan wrote:
>> On 4/13/18 3:25 PM, Bradford Wetmore wrote:
>>> SunRsaSignEntries.java
>>> ----------------------
>>> 145:  Where did you come up with this convention for your aliases?
>>>
>>>      SHA1withRSA-PSS
>>>
>>> I see Bouncy Castle[1] and Android[2] are both using:
>>>
>>>      SHA*withRSA/PSS
>>>      RSASSA-PSS (name from PKCS#1)
>>>
>>> [1] 
>>> https://github.com/bcgit/bc-java/blob/master/prov/src/main/java/org/bouncycastle/jcajce/provider/asymmetric/RSA.java 
>>>
>>> [2] https://developer.android.com/reference/java/security/Signature.html
>>>
>>> but we have neither style.
>>
>> Since these standard names have not yet been defined, we don't 
>> necessarily have to be consistent, but I don't see a good enough 
>> reason for us to name them differently, so to help with compatibility 
>> I would go with the names above.
>>
>> --Sean


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