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[MJARSIGNER-72] Parallel signing for increased speed #114

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Lennart Schedin opened MJARSIGNER-72 and commented

Background:

As of June 1 2023, a new industry standard mandates the storage of private keys used for code signing on external hardware devices. Refer to https://knowledge.digicert.com/general-information/new-private-key-storage-requirement-for-standard-code-signing-certificates-november-2022 for details. Various devices, from the Thales SafeNet USB eToken (about $30), Yubico YubiHSM 2 FIPS (about €1000) up to Thales Luna S700 Series (about €30000) can store these keys. Cloud-based HSM solutions (like DigiCert KeyLocker ($90/year)) also exist.

 

This ticket primarily targets HSM as a service but could benefit network attached HSM solutions as well.

 

Problem:

Using the jarsigner:sign goal it is possible to specify {}archiveDirectory{}, that points to a directory with many jar files. This is useful for signing every dependency the project has.

 

Using the DigiCert Keylocker HSM as a service I measured that it took 240 seconds to sign 128 jar files. I was in Sweden and the DigiCert Keylocker service is in USA. The response time of server is about 500 to 700 ms (without any login and without any signing).

 

I created a quick parallel hack (using the Linux command parallel) that used 8 threads and it took only 31 seconds. That is: for this specific HSM service it scales linearly with the number of threads used.

 

To implement:

I propose to implement a parallelization for maven-jarsigner-plugin that can be used when signing many jar files at once.

 

The configuration for this could be a new parameter named threadCount (with user property {}jarsigner.threadCount{}) with default to 1 (no parallelization).


Affects: 3.0.0

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enhancementNew feature or requestpriority:minorMinor loss of function, or other problem where easy workaround is present

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