AWS Key Management Service (AWS KMS) lets you create KMS keys that can be used to generate and verify Hash-Based Message Authentication Code (HMACs). HMACs are a powerful cryptographic building block that incorporates secret key material within a hash function to create a unique keyed message authentication code.
HMACs can provide a fast way to tokenize or sign data such as Web API requests, credit card numbers, bank routing information, or personally identifiable information (PII). Because HMACs utilize symmetric cryptography, they are typically higher performance than signing algorithms that use asymmetric cryptography like RSA or ECC. HMACs are commonly used in several Internet standards and communication protocols such as JSON Web Tokens (JWT).
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Publisher: Amazon Web Services
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