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Date Published: October 2019
Comments Due: January 29, 2020 (public comment period is CLOSED)
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NIST is proposing updates to its standards on digital signatures and elliptic curve cryptography to align with existing and emerging industry standards. As part of these updates, NIST is proposing to adopt two new elliptic curves, Ed25519 and Ed448, for use with EdDSA. EdDSA is a deterministic elliptic curve signature scheme currently specified in the Internet Research Task Force (IRTF) RFC 8032, Edwards-Curve Digital Signature Algorithm. NIST further proposes adopting a deterministic variant of ECDSA, which is currently specified in RFC 6979, Deterministic Usage of the Digital Signature Algorithm and Elliptic Curve Digital Signature Algorithm. Finally, based on feedback received on the adoption of the current elliptic curve standards, the draft standards deprecate curves over binary fields due to their limited use by industry. The proposed digital signature algorithms are included in Draft FIPS 186-5, Digital Signature Standard (DSS).
NIST-recommended elliptic curves, previously specified in FIPS 186-4 Appendix D, are now included in Draft Special Publication (SP) 800-186, Recommendations for Discrete Logarithm-Based Cryptography: Elliptic Curve Domain Parameters.
NIST requests comments on the set of recommended and allowed elliptic curves included in Draft NIST SP 800-186. In particular, NIST requests feedback on the use of these curves by industry, and industry’s need for additional elliptic curve specifications to meet security or customer requirements.
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