You must have heard a lot about encoding and decoding… Exactly this is what Encryption and Decryption are… Encryption is a process that encodes data so that only those people who I will give permission, will be able to decode and get the actual meaning. It helps us when two systems or two software are communicating. It helps in keeping the data confidential and vice versa Decryption is a method that decodes the encrypted data to readable form.
Encryption and Decryption, both, always have a key which can be used in encoding data and decoding data.
*symmetric encryption have one key it use same key for encoding and decoding data
**Asymmetric encryption have two separate key i.e. public key (used to encrypt data) and private key (used to decode data)
Types of encryption;
Let us learn about the 4 types of encryption-
1.Advanced Encryption Standard(AES) – AES can encrypt only fixed size blocks of data. For eg: 128bit, 192bit, 256bit . In this case, if I need to encrypt a file or a message which is 1kb(kilobit) then we have to break 1kb data in bit and one by one we have to encrypt all data. If we are using 256bit, then we have to divide our data to 4 decipher and we have to encrypt that.
2.Rivest-Shamir-Adleman(RSA):- RSA is a asymmetric type encryption which is basically used in digital signature
3.Triple Data Encryption Standard(TripleDes):- TripleDes is encrypting data using a 56bit key for three times to each data block. It is basically used in mobile pin,atm pin,unix password etc.
4.Twofish:- Twofish ciphers data blocks of 128 bits. Twofish always encrypts data in 16 rounds regardless of the key size. Though it works slower than AES, the Twofish encryption method is used in encrypting files and folders.
So now that you have learnt the encryption and decryption processes well, the next follow up article based on this topic will be updated soon.
