DES - Data Encryption Standard
wikipedia: Data Encryption Standard 56 bit key
- August 27, 1974
- (1997) 96 Days - RSA DES Challenge
- (1998-02) 41 Days - RSA DES Challenge II-1
- (07-1998) 56 Hours - RSA DES Challenge II-2 - Cost $250,000 - Winnings $10,000
- (01-1999) 22 Hours 15 Minutes - RSA DES Challenge III
- EFF Deep Crack + distribited.net - 250,000 DES engines
aka: TDES or 3DES
wikipedia: Triple DES -- Effective key strenght (112 bits) -- uses 3 - 56 bit keys - for a key length 168 bit key
- Published 1998 ANSI X9.52 - CBCM mode - Triple-DES - Multiple encryption
- Published 1999 FIPS PUB 46-3
AES - Advanced Encryption Standard
wikipedia: Advanced Encryption Standard 128, 192 and 256 bit keys
wikipedia: NIST AES Process
- September 12, 1997
- Rijndael, developed by a Swedish team, is more computationally efficient than 3DES by a wide margin and supports key lengths of 128, 192 and 256 bits.
- The cipher was developed by two Belgian cryptographers, Joan Daemen and Vincent Rijmen, and submitted to the AES selection process under the name "Rijndael", a portmanteau of the names of the inventors.
- 2003 - National Institute of Standards and Technology (NIST)
- all key lengths are secure enough for classified information
- 128 key length is sufficient to protect up to the SECRET level.
- 192 or 256 key lengths are required for TOP SECRET level.
Note: Rijndael is Pronounced “Rhine Dahl”
- December 14, 1977
- The algorithm was publicly described in 1977 by Ron Rivest, Adi Shamir, and Leonard Adleman at MIT; the letters RSA are the initials of their surnames, listed in the same order as on the paper.
- NIST considers a 1024 bit key effective throught 2010
- NIST recommends a minimum key size of 2048 through 2030