serialize
Serialize the EncryptionSession to a string. This is for advanced use. May be used to keep sessions in a cache. WARNING: a user could use this cache to work around being revoked. Use with caution. WARNING: if the cache is accessible to another user, they could use it to decrypt messages they are not supposed to have access to. Make sure only the current user in question can access this cache, for example by encrypting it.
Return
Returns the serialized encryption session as a String.
Throws
| SealdException |