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Fri, November 7, 2025

AWS KMS Adds Ed25519 (EdDSA) Support for Signatures

🔐 AWS Key Management Service (KMS) now supports the Edwards-curve Digital Signature Algorithm (EdDSA) using the Ed25519 curve. You can create asymmetric KMS keys or data key pairs to sign and verify EdDSA signatures, benefiting from 128-bit security equivalent to NIST P-256, faster signing, and compact 64‑byte signatures and 32‑byte public keys. This capability is available in all AWS Regions, including GovCloud and China.

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