Acceptance Criteria

In libmongocrypt

• Add the following new methods to the ClientEncryption class
  • deleteKey(id: Binary): DeleteResult
  • getKey(id: Binary): Optional<Document>
  • getKeys(): Iterable<Document>
  • addKeyAltName(id: Binary, keyAltName: String): Optional<Document>
  • removeKeyAltName(id: Binary, keyAltName: String): Optional<Document>
    • Implement the functionality with a single update that uses an aggregation expression (NODE-4312)
  • getKeyByAltName(keyAltName: String): Optional<Document>

In the driver

• Unskip unified csfle tests for each of the following methods:
  • deleteKey(id: Binary): DeleteResult
  • getKey(id: Binary): Optional<Document>
  • getKeys(): Iterable<Document>
  • addKeyAltName(id: Binary, keyAltName: String): Optional<Document>
  • removeKeyAltName(id: Binary, keyAltName: String): Optional<Document>
  • getKeyByAltName(keyAltName: String): Optional<Document>

References

• The ClientEncryption API is documented here.
• Anna has completed the work to add support for custom key material and rewrapManyDataKey here
• mongosh has implemented support for these methods in the shell.  Their implementation can serve as a reference, available here]

Additional AC

• Investigate triggering our driver's tests from libmongocrypt 
• If this turns out to be too much effort for this work, file a ticket