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What is the difference between encryption and a digest?
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Since encryption is two-way, the data can be decrypted so it is readable again. Hashing, on the other hand, is one-way, meaning the plaintext is scrambled into a unique digest, through the use of a salt, that cannot be decrypted.
The original information can be easily retrieved if we know the encryption key and algorithm used for encryption. It is more secure in comparison to encryption. It is less secure in comparison to hashing.
The result of applying a hash function to information; also called a message digest. The output of a hash function (e.g., hash(data) = digest).
The various encryption types. The three major encryption types are DES, AES, and RSA.
Encryption takes a plain text and converts it to an encrypted text using a key and an encryption algorithm. The resulting encrypted text can later be decrypted (by using the same key and algorithm).
A digest takes a plain text and generates a hashcode which can be used to verify if the plain text is unmodified but cannot be used to decrypt the original text from the hash value.
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Encryption conceals the contents of the plaintext, while a digest is a special kind of hash that acts as a sort of fingerprint for the data. If the message digest is encrypted with a private key, this can be used as a digital signature to ensure that it came from a particular source.
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