Ours Goes to 11 (or at least to 7)
Originally by Luther Martin, Chief Security Architect, Voltage Security
Since the members of SHA-2 family of hash functions are clearly better than the venerable SHA-1 hash function, a hypothetical SHA-7 hash function must be even better. Perhaps a full seven times better than SHA-1 and 3.5 times better than any of the SHA-2 options. It turns out that you don’t have to wait as long as you might think for this. If it takes NIST roughly five years for each step in the evolution of the Secure Hash Standard (FIPS 180 to FIPS 180-1 to FIPS 180-2, etc.), you might expect to have to wait an additional 20 years or so for SHA-7.
Luckily, such a hash function already exists! It was apparently developed by a researcher funded by the Italian government. You can read about it here.
Here’s how this particular hash function is described:
The new encryption algorithm SHA-7 was developed to solve the problem of uniqueness of digital documents added inside the new digital code of Public Administration in Italy.
The encryption SHA-7 allows to generate a unique “message digest” of the content of a message in relation to the system of communication and transmission that is used.
SHA-7 is more robust than the existing standard SHA-2 by decreasing the probability of collision of over 3 million times in less than the incorruptible and invulnerable SHA-2. However, it is four times faster than the latter, being made with fewer cycles of permutation encryption.
In the current state of the SHA-7 method, turns out to be the cryptographic algorithm safer and faster in the world.
SHA-7 adheres to the international standard “Secure Has Standard” FIPS-PUB 180-3 and RFC3174, introducing a variant that can increase the permutations up to 3,628,800 more combinations than SHA-2, but using a computation time of only 1,644 ms, which is four times faster than SHA-2.
The new encryption algorithm SHA-7 is used to attest to the legal value of the content of the registered letter, innovating in the forensic field compared to existing limits until now.
The innovation of encryption SHA-7 solves in a general way the possibility to certify the content of messages sent in the legal notices.
And although I’m not quite sure how SHA-7 can follow the FIPS 180-3 standard while being different from the existing FIPS 180-3 standard, but maybe that would become clear if I managed to find the time to read and understand the SHA-7 standard.