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An XOR algorithm can encrypt an email address, sending the result reversible and without affecting the performance of servers. It is not the most secure encryption, but there are some tricks we can do. XOR is not an expensive algorithm to process, so we can split the text into parts and encrypt them with different keys. We're talking about adding one layer of security where none exists! The first element consists of five characters. Once the key is encrypted, we can reuse it as a portion of this hash as a secure key. This is also a guarantee that if the database is leaked, it will not be clearly demonstrated.