What encryption protocol is widely approved for encrypting data at rest in the public cloud?

AES-256, or Advanced Encryption Standard with a 256-bit key length, is widely recognized and approved for encrypting data at rest in the public cloud due to its strong security features. AES is a symmetric encryption algorithm, meaning it uses the same key for both encryption and decryption, which provides efficient processing and scalability in cloud environments. Its 256-bit key length offers a high level of security, making it resistant to brute-force attacks and suitable for protecting sensitive data.

Many industry standards and regulatory frameworks endorse AES-256 as a best practice for data protection. This consensus further establishes AES-256 as a reliable choice for organizations seeking to secure their data in cloud environments, as it meets compliance requirements across various sectors.

Additionally, its widespread adoption in both government and industry, including applications requiring high levels of security, cements its reputation as a go-to encryption standard for data at rest, particularly within public cloud infrastructures.