On Fri, 25 Jul 2025 00:42:56 GMT, Anthony Scarpino <ascarp...@openjdk.org> 
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
>
> src/java.base/share/classes/com/sun/crypto/provider/RSACipherAdaptor.java 
> line 37:
> 
>> 35: import java.security.InvalidAlgorithmParameterException;
>> 36: import java.security.InvalidParameterException;
>> 37: import java.security.ProviderException;
> 
> not used

Yes, will remove.

> src/java.base/share/classes/com/sun/crypto/provider/RSACipherAdaptor.java 
> line 43:
> 
>> 41: import javax.crypto.BadPaddingException;
>> 42: import javax.crypto.IllegalBlockSizeException;
>> 43: import javax.crypto.NoSuchPaddingException;
> 
> not used

Yes, will remove.

> src/java.base/share/classes/sun/security/util/CryptoAlgorithmConstraints.java 
> line 36:
> 
>> 34: import java.util.Set;
>> 35: import java.util.concurrent.ConcurrentHashMap;
>> 36: import sun.security.util.KnownOIDs;
> 
> This import isn't needed since `KnownOIDs` in the same package.

True, will remove.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/26377#discussion_r2241204330
PR Review Comment: https://git.openjdk.org/jdk/pull/26377#discussion_r2241206569
PR Review Comment: https://git.openjdk.org/jdk/pull/26377#discussion_r2241202560

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