128 Bit. Moores law says that computers get twice as fast every 2 years. It is one of the most secure encryption methods used in most modern encryption algorithms and technologies.
Saying that it is a 128-bit integer is telling us its size. While in the past there was a need to address more memory the current 64-bit CPUs can handle so much RAM that you cant even imagine. It is not that simple at all.
Moores law says that.
Also that data has to come from somewhere and go somewhere so there would need to be similarly large registers cache other memory etc for the wide ALU to be used effectively. Your 128-bit key is still 19 bits longer which multiplies the time by 500000. Redirected from 128 bit encryption In cryptography key size key length or key space is the number of bits in a key used by a cryptographic algorithm such as a cipher. The most immediate and correct answer is 128 bits.