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This publication explores the use of asymmetric cryptography in Zero Trust. Asymmetric cryptography provides an industry-standard, secure method to establish identity, authenticate entities, maintain data integrity, and control access without requiring any explicit trust. Therefore, it aligns well with the core principles of Zero Trust: Never Trust, Always Verify and Least Privilege.

When considering Zero Trust, asymmetric cryptography is particularly useful for authentication and data protection. For authentication, asymmetric cryptography is integral to Public-Key Infrastructure (PKI), utilizing digital signatures to authenticate users and devices. For data protection, asymmetric cryptography is integral in key exchange to establish the symmetric key for data encryption. 

When implementing asymmetric cryptography, it's important to consider factors such as security strength, computational cost, and key size. Additionally, robust key management practices, encompassing generation, distribution, storage, and revocation, are crucial for maintaining cryptographic integrity. Moreover, seamless integration with Identity and Access Management (IAM) systems is essential for efficient authentication and authorization processes.

 

Readers will come to understand how asymmetric cryptography is a powerful enabler for Zero Trust. Its ability to establish secure communications, verify identities, and ensure data protection, clearly supports Zero Trust objectives.