How many layers of encryption standards are defined by NIST?

NIST, or the National Institute of Standards and Technology, has defined four layers of encryption standards known as the Cryptographic Standards and Guidelines. These layers encompass various aspects of cryptography, including but not limited to encryption algorithms, key management, and digital signatures. The established standards help ensure the confidentiality, integrity, and authenticity of data across various systems and applications.

By having multiple layers, NIST provides a comprehensive framework that addresses varying requirements and complexities of data security. This layered approach allows organizations to adopt appropriate standards depending on their specific security needs and use cases, significantly enhancing the overall security posture in digital communications and data storage.