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Encryption is the conversion of data into a form, called a ciphertext, that cannot be easily understood by unauthorized people. Decryption is the process of converting encrypted data back into its original form, so it can be understood.
Advanced Encryption Standard - AES
In cryptography, the Advanced Encryption Standard - AES, also known as Rijndael, is a symmetric-key encryption standard adopted by the U.S. government. AES was announced by National Institute of Standards and Technology (NIST) as U.S. FIPS PUB 197 (FIPS 197) on November 26, 2001 after a five-year standardization process. It became effective as a Federal government standard on May 26, 2002.
The AES ciphers have been analyzed extensively and are now used worldwide, it has also become the industry standard for protecting personal and commercial information.
Twofish
In cryptography, Twofish is a symmetric key block cipher with a block size of 128 bits and key sizes up to 256 bits. Twofish was designed by Bruce Schneier, John Kelsey, Doug Whiting, David Wagner, Chris Hall, and Niels Ferguson; published in 1998. It was one of the five finalists of the Advanced Encryption Standard contest, but was not selected for standardization. Twofish is related to the earlier block cipher Blowfish.
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