AES-256 encryption is virtually uncrackable using any brute-force method. It would take millions of years to break it using the current computing technology and capabilities. However, no encryption standard or system is completely secure.Hackers may not be able to brute force your AES 256 algorithm, but they don't give up that fast. They can (and will) still be able to try and: Gain access to your AES 256 cryptographic keys. Leverage side-channel attacks such as mining leaked information.There is only one known unbreakable cryptographic system, the one-time pad, which is not generally possible to use because of the difficulties involved in exchanging one-time pads without their being compromised. So any encryption algorithm can be compared to the perfect algorithm, the one-time pad.

What is the hardest encryption to break : AES 256-bit encryption is the strongest and most robust encryption standard that is commercially available today. While it is theoretically true that AES 256-bit encryption is harder to crack than AES 128-bit encryption, AES 128-bit encryption has never been cracked.

## Has anyone cracked AES 256

AES cannot be broken with brute-force attacks. However, no encryption system is 100% secure. There have been instances where attempts to break the encryption were made. A related-key attack was identified in 2009 where the hacker attempted to crack the code with cryptanalysis.

Does 512 bit encryption exist : To be precise, it uses key sizes of 128, 192 and 256 bits and a single block size of 128 bits. However, Rijndael is not defined for key sizes larger than 256 bits, so AES-512 is not likely to ever exist; you'd have to change the algorithm significantly. Surprisingly it is not more secure than AES 256.

Military-Grade Unbreakable Encryption

Some hail AES-256 as unbreakable through brute force, but the truth lies in the enormity of time and computational power required. While theoretically crackable with extraordinary resources, it would take around 10 to 18 years to breach AES-256 encryption.

AES256 is currently quantum resistant, and will remain so until quantum computers become at least an order-of-magnitude more powerful than the current cutting-edge technology in quantum computing.

## Is there any encryption method that Cannot be broken

The only encryption technique that cannot be broken by brute force is the one-time-pad (OTP). The reason is very simple: A brute force attack would generate all the possible messages and the attacker would be unable to decipher which is the one that was sent.The new algorithm (AES-512) uses input block size and key size of 512-bits which makes it more resistant to cryptanalysis with tolerated area increase.256-bit encryption is so strong that it's also resistant to attacks from a Supercomputer. In case you don't know about them, supercomputers are computers that can break down huge tasks into multiple smaller chunks and work on them simultaneously with large number of processing cores that they have.

Hackers can break encryption to access the data using a number of different methods. The most common method is stealing the encryption key itself. Another common way is intercepting the data either before it has been encrypted by the sender or after it has been decrypted by the recipient.

How long does AES 256 take to crack : With the right quantum computer, AES-128 would take about 2.61*10^12 years to crack, while AES-256 would take 2.29*10^32 years. For reference, the universe is currently about 1.38×10^10 years old, so cracking AES-128 with a quantum computer would take about 200 times longer than the universe has existed.

Has AES 512 been cracked : All computers + supercomputers in the world combine to crack AES 512, it would take more than 77 billion years to do so. Even then, there is no guarantee that decryption would happen successfully!

## Has 128-bit encryption ever been cracked

As shown above, even with a supercomputer, it would take 1 billion billion years to crack the 128-bit AES key using brute force attack. This is more than the age of the universe (13.75 billion years).

AES256 is currently quantum resistant, and will remain so until quantum computers become at least an order-of-magnitude more powerful than the current cutting-edge technology in quantum computing.With the right quantum computer, AES-128 would take about 2.61*10^12 years to crack, while AES-256 would take 2.29*10^32 years. For reference, the universe is currently about 1.38×10^10 years old, so cracking AES-128 with a quantum computer would take about 200 times longer than the universe has existed.

How fast can quantum computers break AES-256 : With quantum computing quickly becoming a reality, it has been estimated in a research paper by Kryptera that these computers capable of more than “6,600 logical, error-corrected qubits would be required” to significantly impact AES-256.