Elliptic curve cryptography (ECC) is an approach to public-key cryptography based on the algebraic structure of elliptic curves over finite fields. One of the main benefits in comparison with non-ECC cryptography [..] is the same level of security provided by keys of smaller size. from its Wikipedia entry 2015-11-05

https://arstechnica.com/security/2013/10/a-relatively-easy-to-understand-primer-on-elliptic-curve-cryptography/

GnuPG 2.1 supports ECC.

Function Protocol Curve OpenPGP spec. Library dependency Token
Signature ECDSA NIST ECC: P-256 RFC6637 Gnuk 1.2
Signature ECDSA NIST ECC: P-384 RFC6637
Signature ECDSA NIST ECC: P-521 RFC6637
Signature ECDSA ECC Brainpool: brainpoolP256r1
Signature ECDSA ECC Brainpool: brainpoolP384r1
Signature ECDSA ECC Brainpool: brainpoolP512r1
Signature ECDSA SECG: secp256k1 libgcrypt 1.7 Gnuk 1.2
Signature EdDSA RFC8032: Ed25519 RFC4880bis draft Gnuk 1.2
Encryption ECDH NIST ECC: P-256 RFC6637 Gnuk 1.2
Encryption ECDH NIST ECC: P-384 RFC6637
Encryption ECDH NIST ECC: P-521 RFC6637
Encryption ECDH ECC Brainpool: brainpoolP256r1
Encryption ECDH ECC Brainpool: brainpoolP384r1
Encryption ECDH ECC Brainpool: brainpoolP512r1
Encryption ECDH SECG: secp256k1 libgcrypt 1.7 Gnuk 1.2
Encryption ECDH RFC7748: Curve25519 libgcrypt 1.7 Gnuk 1.2

ECC (last edited 2017-08-12 23:10:42 by Olf)