RFR: 8255552: Add DES/3DES/MD5 to jdk.security.legacyAlgorithms [v6]

[Weijun Wang]

On Tue, 3 May 2022 14:54:05 GMT, Hai-May Chao <hchao at openjdk.org> wrote:

>> Please review these changes to add DES/3DES/MD5 to `jdk.security.legacyAlgorithms` security property, and to add the legacy algorithm constraint checking to `keytool` commands that are associated with secret key entries stored in the keystore. These `keytool` commands are -genseckey, -importpass, -list, and -importkeystore. As a result, `keytool` will be able to generate warnings when it detects that the secret key based algorithms and PBE based Mac and cipher algorithms are weak. Also removes the "This algorithm will be disabled in a future update.” from the existing warnings for the asymmetric keys/certificates.
>> Will also file a CSR.
>
> Hai-May Chao has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Update per review comments

I found a keytool bug. It prints out "PBEWithMD5AndDES" no matter what key algorithm is used in `keytool -importpass`. Together with the code change here, it means a warning will always be shown even if we choose a strong algorithm. https://bugs.openjdk.java.net/browse/JDK-8286069 filed.

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PR: https://git.openjdk.java.net/jdk/pull/8300