Package org.signal.libsignal.messagebackup

Class MessageBackupKey

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description

    • Field Summary

      Fields 
      Modifier and Type Field Description

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description

    • Method Summary

      Modifier and Type Method Description
      static MessageBackupKey fromParts(Array<byte> hmacKey, Array<byte> aesKey) Constructs a MessageBackupKey from the individual keys that make it up.
      Array<byte> getHmacKey() An HMAC key used to sign a backup file.
      Array<byte> getAesKey() An AES-256-CBC key used to encrypt a backup file.

      • Methods inherited from class org.signal.libsignal.internal.NativeHandleGuard.SimpleOwner

        unsafeNativeHandleWithoutGuard

      • Methods inherited from class org.signal.libsignal.internal.NativeHandleGuard.Owner

        guard, guardedMap, guardedMapChecked, guardedRun, guardedRunChecked

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • MessageBackupKey

        MessageBackupKey(String accountEntropy, ServiceId.Aci aci)
        Derives a MessageBackupKey from the given account entropy pool.

      • MessageBackupKey

        MessageBackupKey(BackupKey backupKey, Array<byte> backupId)
        Derives a MessageBackupKey from a backup key and ID.

    • Method Detail

      • fromParts

         static MessageBackupKey fromParts(Array<byte> hmacKey, Array<byte> aesKey)

        Constructs a MessageBackupKey from the individual keys that make it up.

        Will throw an unchecked exception if the keys are the wrong length; you're expected to only use this with keys previously derived by this class (or its equivalent in another language).

      • getHmacKey

         Array<byte> getHmacKey()

        An HMAC key used to sign a backup file.

      • getAesKey

         Array<byte> getAesKey()

        An AES-256-CBC key used to encrypt a backup file.