Encryption Methods

Encryption is a technique for transforming information on a computer in a way that it becomes unreadable. So if someone gained the access to a computer they won’t be able to do anything with the data except if they have complex, expensive software or the original data key. One of the first people among the history that used encryption are Egyptians and they used hieroglyphs language. 

There are many different methods of encrypting the data such as...

• Hashing

• Hashing creates a unique, fixed-length signature for a message or data set. Each “hash” is unique to a specific message, so minor changes to that message would be easy to track. Once data is encrypted using hashing, it cannot be reversed or deciphered. Hashing, then, though not technically an encryption method as such, is still useful for proving data hasn’t been tampered with.

• Symmetric methods Symmetric encryption is also known as private-key cryptography, and is called so because the key used to encrypt and decrypt the message must remain secure, because anyone with access to it can decrypt the data. Using this method, a sender encrypts the data with one key, sends the data (the ciphertext) and then the receiver uses the key to decrypt the data.

• Asymmetric methods
• Asymmetric encryption, or public-key cryptography, is different than the previous method because it uses two keys for encryption or decryption (it has the potential to be more secure as such). With this method, a public key is freely available to everyone and is used to encrypt messages, and a different, private key is used by the recipient to decrypt messages.