Add abstraction for managing pools of certified keys. - #1978
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Add an abstraction for managing pools of keys generated locally in a secure area and certified by a certifying authority: - In `CertifiedKeyManager`, implement a key pool manager backed by any `SecureArea` and `Storage` implementation. Support batch certification of locally generated keys, configurable proactive replenishment threshold (`replenishThresholdFraction`, defaulting to 50%), configurable key retirement threshold (`refreshThresholdFraction`, defaulting to two thirds of certificate validity), resilient offline operation by retaining the last valid key during network outages, and self-healing cleanup of stale keys removed from the underlying secure area. - Expose `CertifiedKeyManager.createWithSingleKeyCertifier()` to support single-key certification callbacks without JVM method signature clashes. - In `CertifiedKeyManagerTest`, add comprehensive multiplatform unit tests covering happy path retrieval, batch replenishment, key expiration, offline degradation, stale key cleanup, single-key certifier factory creation, pool clearing, and custom threshold configurations. Fixes #1977. Test: Ran ./gradlew :multipaz:jvmTest Test: Ran ./gradlew :multipaz:assemble Test: Ran ./gradlew detekt Signed-off-by: David Zeuthen <zeuthen@gmail.com>
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Add an abstraction for managing pools of keys generated locally in a secure area and certified by a certifying authority:
CertifiedKeyManager, implement a key pool manager backed by anySecureAreaandStorageimplementation. Support batch certification of locally generated keys, proactive replenishment when the pool of fresh keys falls below 50%, proactive key retirement after two thirds of certificate validity, resilient offline operation by retaining the last valid key during network outages, and self-healing cleanup of stale keys removed from the underlying secure area.CertifiedKeyManager.createWithSingleKeyCertifier()to support single-key certification callbacks without JVM method signature clashes.CertifiedKeyManagerTest, add comprehensive multiplatform unit tests covering happy path retrieval, batch replenishment, key expiration, offline degradation, stale key cleanup, single-key certifier factory creation, and pool clearing.Fixes #1977.
Test: Ran ./gradlew :multipaz:jvmTest
Test: Ran ./gradlew :multipaz:assemble
Test: Ran ./gradlew detekt