[Enhancement] Do some code optimization[AuthTokenUtils]

[Alonexc]

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• I had searched in the issues and found no similar issues.

Enhancement Request

located at:
eventmesh-security-plugin/eventmesh-security-auth-token/src/main/java/org/apache/eventmesh/auth/token/impl/auth/AuthTokenUtils.java
analysis and explanation:
a. The logic of "authTokenByPublicKey" and "helloTaskAuthTokenByPublicKey" method in lines "54-87" and "99-132" is the same, so it can be extracted as one method.
b. Variable 'validationKeyBytes' initializer 'new byte[0]' is redundant.[line 66,111]
c. Argument 'publicKeyUrl' might be null.[line 68,113]

d. 'if' statement can be simplified.[line 146]

e. The "{}" is redundant.[line 90,134]

Describe the solution you'd like

a. Repeat the logic code extracted as a method.
b. Remove redundant initializers.
c. Use 'Objects.requireNonNull()' to avoid an NPE.

d. Replace this if-then-else statement by a single return statement

e. Remove the extra "{}".

Are you willing to submit PR?

• Yes I am willing to submit a PR!

[himansh295]

@Alonexc @xwm1992 @kyooosukedn Can I work on this issue?

[Alonexc]

@himansh295 Currently there are pr submissions, you can look at other issues.

[github-actions]

It has been 90 days since the last activity on this issue. Apache EventMesh values the voices of the community. Please don't hesitate to share your latest insights on this matter at any time, as the community is more than willing to engage in discussions regarding the development and optimization directions of this feature.

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[yangsl960702]

请问该问题已经有人解决了吗，如果没有，我可以做尝试吗