On Wed, 30 Jul 2025 07:25:57 GMT, Valerie Peng <[email protected]> wrote:
>> This enhancement introduces a new security property
>> "jdk.crypto.disabledAlgorithms" which can be leveraged to disable algorithms
>> for JCE/JCA crypto services. For now, only Cipher, KeyStore, MessageDigest,
>> and Signature services support this new security property. The support can
>> be expanded later to cover more services if needed. Note that this security
>> property is meant to disable algorithms irrespective of providers. If the
>> algorithm is found to be disabled, it will be rejected before reaching out
>> to provider(s) for the corresponding implementation(s).
>>
>> A few implementation notes:
>> 1) The specified security property value is lazily loaded and all changes
>> after it's been loaded are ignored. Invalid entries, e.g. wrong syntax, are
>> ignored and removed. The algorithm name check is case-insensitive. If a
>> disabled algorithm is known to has an object identifier (oid) by JDK, this
>> oid and its aliases is also added to the disabled services.
>> 2) The algorithm name checking impl is based on the
>> sun.security.util.AlgorithmConstraints class, but without the decomposing
>> and different constraints.
>> 3) The hardwiring of NONEwithRSA signature to RSA/ECB/PKCS1Padding cipher in
>> java.security.Signature class is removed. Instead, this is moved to the
>> provider level, i.e. SunJCE and SunPKCS11 provider are changed to claim the
>> NONEwithRSA signature support. Disabling one will not affect the other.
>>
>> CSR will be filed once the review is wrapping up.
>>
>> Thanks~
>> Valerie
>
> Valerie Peng has updated the pull request incrementally with one additional
> commit since the last revision:
>
> Address review comments from Sean and Tony.
src/java.base/share/conf/security/java.security line 784:
> 782: #
> 783: # The syntax of the disabled services string is described as follows:
> 784: # "DisabledService {, DisabledService}"
`DisabledService` looks rather confusing in this context, should we replace it
with `DisabledAlgorithm`?
src/java.base/share/conf/security/java.security line 796:
> 794: #
> 795: # The "AlgorithmName" is the standard algorithm name of the disabled
> 796: # service. See the Java Security Standard Algorithm Names Specification
s/service/algorithm
-------------
PR Review Comment: https://git.openjdk.org/jdk/pull/26377#discussion_r2243425468
PR Review Comment: https://git.openjdk.org/jdk/pull/26377#discussion_r2243426986
