RSA Secret-Key Challenge

High Quality Content by WIKIPEDIA articles! The RSA Secret-Key Challenge was a series of cryptographic contests that were started by RSA Laboratories on January 28, 1997 with the intent of helping to demonstrate the relative security of different encryption algorithms. The RSA Secret-Key Challenge is no longer active. For each contest, RSA had posted on its website a block of ciphertext and the random initialization vector used for encryption. To win, a contestant would have had to break the code by finding the original plaintext and the cryptographic key that will generate the posted ciphertext from the plaintext. The challenge consisted of one DES contest and twelve contests based around the block cipher RC5.