AWS Security Blog

Tag: HMAC

How to protect HMACs inside AWS KMS

April 20, 2022: In the section “Use the HMAC key to encode a signed JWT,” we fixed an error in the code sample. Today AWS Key Management Service (AWS KMS) is introducing new APIs to generate and verify hash-based message authentication codes (HMACs) using the Federal Information Processing Standard (FIPS) 140-2 validated hardware security modules […]

Read More

How to Use the REST API to Encrypt S3 Objects by Using AWS KMS

AWS Key Management Service (AWS KMS) allows you to use keys under your control to encrypt data at rest stored in Amazon S3. The two primary methods for implementing this encryption are server-side encryption (SSE) and client-side encryption (CSE). Each method offers multiple interfaces and API options to choose from. In this blog post, I […]

Read More