Data encryption algorithm(edit)
- 1. Name: Hussain Almohammadi Course: Networks and Information Security Assignment: Data Encryption Algorithm Instructor’s Name: Ibraheem aledane
- 2. Introduction: I will write about Data Encryption Algorithms, and how it is important in communication. Also, I will write about some of algorithms, and some useful features, also will explain the strongest and weakness encryption. Data encryption algorithms: Encryption algorithms are used in computer communications and used FTP transfer. So, the transfer is going to be secured. When we use algorithms in the transfer, so the file will be translated to meaningless text, then the file will be transferred like that the computer that receives the data will use a key to translate the text to the it is original form. If the file is delay before gets to the computer target, so it is not usable or another word it is encrypted. Here are some used algorithms: DES/3DES or TripleDES: This is called Data Encryption Standard which the government of US used in 70s.This type mostly is used in ATM machine in order to encrypt PINs , and helps to encrypt password in UNIX. TripleDES is a new version and it is more secure method of encryption, also the data is encrypted three times, and use a unique key for at least one version. Blowfish: No payment is required to use it, and it was developed by Bruce Schneier and introduced in 1993.
- 3. AES Advanced Encryption Standard it uses the Rijndael block cipher approved by the National Institute of Standards and Technology (NIST). AES was originated by cryptographers Joan Daemen and Vincent Rijmen and replaced DES as the U.S. Government encryption technique in 2000. Twofish Twofish is kind of a block cipher developed by Counterpane Labs. It had been one of five Advanced Encryption Standard (AES) also it is an open source. IDEA This type used in Pretty Good Privacy (PGP) Version 2 also it is an option algorithm in OpenPGP. MD5 Professor Ronald Riverst who developed MD5.MD5 is used to create digital signatures. The old version is MD4 algorithm. SHA 1 SHA 1 is like MD5.SHA 1 might be used instead of MD5 because it has more security. HMAC This type is like MD5 and SHA 1, sometimes we can call it MD5 or SHA 1. RSA Security RC4 RC4 is a variable key size stream cipher based on the use of a random permutation. RC5 This is a parameterized algorithm with a variable block, key size and number of rounds.
- 4. RC6 This an evolution of RC5, it is also a parameterized algorithm that has variable block, key and a number of rounds. This algorithm has integer multiplication and 4 bit working registers. Cipher algorithm. A mechanism is used to encrypt or decrypt a message. Ciphertext. The result of encrypting message generated by cipher algorithm. CTR, Counter. Encryption mode. Decryption. The cipher algorithm will recognize encrypted message by the process. Encryption. The cipher algorithm will not recognize encrypted message by the process. Plaintext. An unencrypted message. Private key. (RFC 2828) used for asymmetric cryptography. A public key cryptosystem is a key of a user's key pair that is known only by that user. Public key A public key which encrypts a message. A public key cryptosystem is a key of a user's key pair that is publicly known.
- 5. Public key encryption. Two keys are used. A public key is used to encrypt the message and a secret private key to decrypt the message. Secret key. It is a single secret key that is used to encrypt and decrypt a message. Stream cipher. is process the data a bit or a byte at a time with a key resulting in a randomized ciphertext or plaintext. Symmetric encryption algorithm. The encryption and the decryption may be the same. Here are some preconfigure data encryption algorithm. These are used to decrypt SOAP messages: WSS API URI WSSDecryption.AES128 (the default value) http://www.w3.org/2001/04/xmlenc#aes128 -cbc WSSDecryption.AES192 http://www.w3.org/2001/04/xmlenc#aes192 -cbc WSSDecryption.AES256 http://www.w3.org/2001/04/xmlenc#aes256 -cbc WSSDecryption.TRIPLE_DES http://www.w3.org/2001/04/xmlenc#tripled es-cbc
- 6. Supported pre-configured key encryption algorithms. The algorithms are used to decrypt SOAP messages: WSS API URI WSSDecryption.KW_AES128 http://www.w3.org/2001/04/xmlenc#kw- aes128 WSSDecryption.KW_AES192 http://www.w3.org/2001/04/xmlenc#kw- aes192 WSSDecryption.KW_AES256 http://www.w3.org/2001/04/xmlenc#kw- aes256 WSSDecryption.KW_RSA_OAEP (the default value) http://www.w3.org/2001/04/xmlenc#rsa- oaep-mgf1p WSSDecryption.KW_RSA15 http://www.w3.org/2001/04/xmlenc#rsa- 1_5 WSSDecryption.KW_TRIPLE_DES http://www.w3.org/2001/04/xmlenc#kw- tripledes
- 7. Strong and weak encryption: Not all the algorithm are the same quality some of them are better than the others. Here is a useful video to watch. https://www.youtube.com/watch?v=h7QwYjZ0sz0 Concluding: Data encrypting algorithms are extremely important for saving data and insure the security by data encrypting algorithms we gain high security and availability. There are some types we only have to know how to use them properly.
- 8. MyCrypto.net. (n.d.). Encryption algorithms. Retrieved October 25, 2006, from http://www.mycrypto.net/encryption/crypto_algorithms.html Webopedia. (2006). What is encryption algorithm? A Word Definition From the Webopedia Computer Dictionary. Jupitermedia Corporation. Retrieved October 25, 2006, from http://www.webopedia.com/TERM/E/encryption_algorithm.html http://networksorcery.com/enp/data/encryption.htm https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.we bsphere.nd.multiplatform.doc/ae/rwbs_wssdecryptalgorithms.html