128-Bit Encryption

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What Does 128-Bit Encryption Mean?

128-bit encryption is a data/file encryption technique that uses a 128-bit key to encrypt and decrypt data or files.

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It is one of the most secure encryption methods used in most modern encryption algorithms. Even some of the best VPN providers use it.. 128-bit encryption is considered to be logically unbreakable.

Techopedia Explains 128-Bit Encryption

128-bit encryption primarily refers to the length of the encryption or decryption key. It is considered secure because it would take massive computation and virtually thousands of years to be cracked. For example, it would take 2128 different combinations to break the encryption key, which is out of reach for even the most powerful computers.

128-bit encryption is implemented in most network/Internet communications technologies such as in web browsers and websites. The Advanced Encryption Standard (AES) is a popular encryption algorithm that supports 128-bit encryption.

Although 128-bit encryption is considered unbreakable, some computational models and theories are expected to break or compete it in years to come.

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Margaret Rouse
Technology Expert
Margaret Rouse
Technology Expert

Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.