libsignal/swift/Sources/LibSignalClient/zkgroup/ProfileKey.swift

//
// Copyright 2020-2021 Signal Messenger, LLC.
// SPDX-License-Identifier: AGPL-3.0-only
//

import Foundation
import SignalFfi

public class ProfileKey: ByteArray {

  public static let SIZE: Int = 32

  public required init(contents: [UInt8]) throws {
    try super.init(newContents: contents, expectedLength: ProfileKey.SIZE)
  }

  public func getCommitment(userId: Aci) throws -> ProfileKeyCommitment {
    return try withUnsafePointerToSerialized { contents in
      try userId.withPointerToFixedWidthBinary { userId in
        try invokeFnReturningSerialized {
          signal_profile_key_get_commitment($0, contents, userId)
        }
      }
    }
  }

  public func getProfileKeyVersion(userId: Aci) throws -> ProfileKeyVersion {
    return try withUnsafePointerToSerialized { contents in
      try userId.withPointerToFixedWidthBinary { userId in
        try invokeFnReturningSerialized {
          signal_profile_key_get_profile_key_version($0, contents, userId)
        }
      }
    }
  }

  public func deriveAccessKey() -> [UInt8] {
    return failOnError {
      try withUnsafePointerToSerialized { contents in
        try invokeFnReturningFixedLengthArray {
          signal_profile_key_derive_access_key($0, contents)
        }
      }
    }
  }

}