libsignal/swift/Sources/LibSignalClient/zkgroup/ServerZkProfileOperations.swift

//
// Copyright 2020-2022 Signal Messenger, LLC.
// SPDX-License-Identifier: AGPL-3.0-only
//

import Foundation
import SignalFfi

public class ServerZkProfileOperations {

  let serverSecretParams: ServerSecretParams

  public init(serverSecretParams: ServerSecretParams) {
    self.serverSecretParams = serverSecretParams
  }

  public func issueExpiringProfileKeyCredential(profileKeyCredentialRequest: ProfileKeyCredentialRequest, userId: Aci, profileKeyCommitment: ProfileKeyCommitment, expiration: UInt64) throws -> ExpiringProfileKeyCredentialResponse {
    return try issueExpiringProfileKeyCredential(randomness: Randomness.generate(), profileKeyCredentialRequest: profileKeyCredentialRequest, userId: userId, profileKeyCommitment: profileKeyCommitment, expiration: expiration)
  }

  public func issueExpiringProfileKeyCredential(randomness: Randomness, profileKeyCredentialRequest: ProfileKeyCredentialRequest, userId: Aci, profileKeyCommitment: ProfileKeyCommitment, expiration: UInt64) throws -> ExpiringProfileKeyCredentialResponse {
    return try serverSecretParams.withUnsafePointerToSerialized { serverSecretParams in
      try randomness.withUnsafePointerToBytes { randomness in
        try profileKeyCredentialRequest.withUnsafePointerToSerialized { request in
          try userId.withPointerToFixedWidthBinary { userId in
            try profileKeyCommitment.withUnsafePointerToSerialized { commitment in
              try invokeFnReturningSerialized {
                signal_server_secret_params_issue_expiring_profile_key_credential_deterministic($0, serverSecretParams, randomness, request, userId, commitment, expiration)
              }
            }
          }
        }
      }
    }
  }

  public func verifyProfileKeyCredentialPresentation(
    groupPublicParams: GroupPublicParams,
    profileKeyCredentialPresentation: ProfileKeyCredentialPresentation,
    now: Date = Date()
  ) throws {
    try serverSecretParams.withUnsafePointerToSerialized { serverSecretParams in
      try groupPublicParams.withUnsafePointerToSerialized { groupPublicParams in
        try profileKeyCredentialPresentation.withUnsafeBorrowedBuffer { presentation in
          try checkError(signal_server_secret_params_verify_profile_key_credential_presentation(serverSecretParams, groupPublicParams, presentation, UInt64(now.timeIntervalSince1970)))
        }
      }
    }
  }

}