The techniques used for saving data is to change/replace it with some other symbol or text. There is a new thing that will compress the data this is called as OpenPGP.

It is like a hybrid system which changes the data in the compressed form and then decompress to get in the original form.

When we want to convert data in OpenPGP we need to compress it first. This will reduce the size of the data to be send and the traffic load on the network will get reduced.

Most cryptanalysis techniques exploit patterns found in the plaintext to crack the cipher. Compression reduces these patterns in the plaintext, thereby greatly enhancing resistance to cryptanalysis.
 

OpenPGP then creates a session key, which is a one-time-only secret key. This key is a random number generated from the random movements of your mouse and the keystrokes you type.

This session key works with a very secure, fast conventional encryption algorithm to encrypt the plaintext; the result is ciphertext. Once the data is encrypted, the session key is then encrypted to the recipient's public key. This public key-encrypted session key is transmitted along with the ciphertext to the recipient.

Decryption works in the reverse. The recipient's copy of OpenPGP uses his or her private key to recover the temporary session key, which OpenPGP then uses to decrypt the conventionally-encrypted ciphertext.

The combination of the two encryption methods combines the convenience of public key encryption with the speed of conventional encryption.

Conventional encryption is about 1, 000 times faster than public key encryption. Public key encryption in turn provides a solution to key distribution and data transmission issues.

Used together, performance and key distribution are improved without any sacrifice in security.