Encryption vs Decryption
Summary: Difference Between Encryption and Decryption is that Encryption is the process of converting readable data into unreadable characters to prevent unauthorized access. You treat encrypted data just like any other data. While the Process of converting encoded/encrypted text into a form that is readable and understandable by humans or computers is known as Decryption.
Encryption is the process of converting readable data into unreadable characters to prevent unauthorized access. You treat encrypted data just like any other data. That is, you can store it or send it in an e-mail message. To read the data, the recipient must decrypt, or decipher, it into a readable form.
In the encryption process, the unencrypted, readable data is called plaintext. The encrypted (scrambled) data is called ciphertext. An encryption algorithm is a set of steps that can convert readable plaintext into unreadable ciphertext. Encryption programs typically use more than one encryption algorithm, along with an encryption key. An encryption key is a programmed formula that the originator of the data uses to encrypt the plaintext and the recipient of the data uses to decrypt the ciphertext.
Some operating systems and e-mail programs allow you to encrypt the contents of files and messages that are stored on your computer. You also can purchase an encryption program, such as Pretty Good Privacy (PGP). A digital signature is an encrypted code that a person, Web site, or organization attaches to an electronic message to verify the identity of the message sender. Digital signatures often are used to ensure that an impostor is not participating in an Internet transaction. That is, digital signatures help to prevent e-mail forgery. A digital signature also can verify that the content of a message has not changed.
Many Web browsers and Web sites use encryption. A Web site that uses encryption techniques to secure its data is known as a secure site. Secure sites often use digital certificates. A digital certificate is a notice that guarantees a user or a Web site is legitimate. A certificate authority (CA) is an authorized person or a company that issues and verifies digital certificates. Users apply for a digital certificate from a CA. The digital certificate typically contains information such as the user’s name, the issuing CA’s name and signature, and the serial number of the certificate. The information in a digital certificate is encrypted.
The Process of converting encoded/encrypted text into a form that is readable and understandable by humans or computers is known as Decryption. Decryption refers to the method of un-encrypting the text manually or by using codes and keys. Data is encrypted to safe information from stealing, and some major companies also encrypt data to keep their trade secrets secure. Then to view this data, you need to decrypt the data by using decryption process. You need to enter passphrase or key to view data and if you don’t have the key, you may need to decrypt this by using algorithms and cracking it.