It’s believed the AES-256 is vulnerable if an attacker can access a user's key. This is why AES is just one aspect of keeping data secure.
There has yet to be a single instance of AES-256 ever being hacked into, at least non ever documented, but that hasn't been for a lack of trying.
The first crack attempts at AES was in 2011, against AES-128 encryption where a biclique attack was used. Biclique is around four times faster at attacking encryption than the standard brute force attack seen most often. It failed.
However a team of Microsoft and Dutch researchers have released a report detailing a theoretical attack on the Advanced Encryption Standard (AES).
The attack, to be presented in early December, utilizes a complex process known as biclique analysis that advances a technique that originally targeted just hashing algorithms.
I also want to address the elephant in the room, which is ‘military-grade’ doesn’t actually exist. At least not in the terms “average handy thinks it is”
The US military uses the military-grade AES encryption algorithm on two fronts. The first being secret (unclassified) information is specific to AES-128.
The second is for top-secret (classified) information, which uses AES-256. Whenever information is handled on both levels through a single entity, AES-256 is adopted as the standard AES encryption algorithm.
Encryption is basically chopping up information into something incoherent.
Military-grade encryption is AES-256, which differs from AES-128 and AES-192 by having a larger key size in the AES encryption algorithm.
Essentially, AES-256 uses more processing power to encrypt and decrypt information making it more difficult for intruders to crack.
But lets be honest, It would take upwards of a billion years for an attack to force its way through a 126-bit key, let alone AES-128. So long as the data encryption has been implemented properly, there is no known attack that would compromise the protection afforded by AES.
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from hacking: security in practice https://ift.tt/xJjO2PQ
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