For entry level smartphones, Google announces a new encryption solution - Adiantum

By VARINDIA - 2019-02-10

For entry level smartphones, Google announces a new encryption solution - Adiantum

For cheaper entry level smartphones, Google has created a special encryption solution method called Adiantum, which would be an optional part of Android distributions going forward. Google has this new mode of storage encryption called Adiantum that is made specifically for devices that lack the capacity to use AES due to slower SoCs. Google says that Adiantum allows it to use the ChaCha stream cipher in a length-preserving mode that adapts ideas from AES-based proposals for length-preserving encryption, such as HCTR and HCH.

 

Adiantum is an innovation in cryptography, designed to make storage encryption more efficient for devices without cryptographic acceleration, ensure that all devices are encrypted, Google wrote in a security blog late on Thursday.

 

According to the post, low budget Android smartphones do not come with the processing power that is needed to run - Advanced Encryption Standard (AES) - which is the standard storage encryption Android uses. 

 

"Android runs on a wide range of devices including smart watches and TVs and in order to offer low cost options, device manufacturers sometimes use low-end processors which do not have hardware support for AES. We've been working to change this because we believe that encryption is for everyone," the post said. 

 

On cheaper Android devices, AES runs very slow, resulting in longer app-launch time, slowing of device and poor user experience. 

 

"Even though Adiantum is very new, we are in a position to have high confidence in its security. In our paper, we prove that it has good security properties," the post added. 

 

Google added the requirement and facilitation for encryption on most Android devices since 2015, with the roll-out of Android 6.0 Marshmallow. 

 

"Android device manufacturers can enable Adiantum for either full-disk or file-based encryption on devices with AES performance less than or equal to 50 megabit per second (MiB/sec) and launching with Android Pie," Google mentioned.

 




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