In cryptography , the EFF DES cracker ( nicknamed `` Deep Crack '' ) is a machine built by the Electronic Frontier Foundation ( EFF ) in 1998 , to perform a brute force search of DES cipher 's key space -- that is , to decrypt an encrypted message by trying every possible key .
In cryptography , the EFF DES cracker ( nicknamed `` Deep Crack '' ) is a machine built by the Electronic Frontier Foundation ( EFF ) to perform a brute force search of DES cipher 's key space -- that is , to decrypt an encrypted message by trying every possible key .