[Cryptography] Nu supr unbrakable cripto

[Christian Huitema]

On Thursday, December 31, 2015 8:01 AM, Bill Cox wrote:
>...
> The basic strategy is to create a crypto grade hash function, and 
> then turn that into a crypto-grade symmetric-key encryption
> algorithm.  

If the hash function uses the Merkle–Damgård construction, isn't that going full circle? Create a hash function from a symmetric encryption algorithm, and then create a symmetric encryption algorithm from the hash function?

-- Christian Huitema