Diff for "ECC" - GnuPG wiki

Differences between revisions 24 and 25

Background:

"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.", ECC at Wikipedia, 2015-11-05

Arstechnica: A relatively easy to understand primer on Elliptic Curve Cryptography

GnuPG supports ECC since version 2.1.

Table of ECC supported functions:

Function	Protocol	Curve	OpenPGP specification	Libgcrypt dependency	Gnuk-based token support
Signature	ECDSA	NIST ECC: P-256	RFC6637, RFC4880bis draft		Gnuk >= 1.2.0
Signature	ECDSA	NIST ECC: P-384	RFC6637, RFC4880bis draft
Signature	ECDSA	NIST ECC: P-521	RFC6637, RFC4880bis draft
Signature	ECDSA	ECC Brainpool: brainpoolP256r1	RFC4880bis draft
Signature	ECDSA	ECC Brainpool: brainpoolP384r1
Signature	ECDSA	ECC Brainpool: brainpoolP512r1	RFC4880bis draft
Signature	ECDSA	SECG: secp256k1		libgcrypt >= 1.7.0	Gnuk >= 1.2.0
Signature	EdDSA	RFC8032: Ed25519	RFC4880bis draft		Gnuk >= 1.2.0
Encryption	ECDH	NIST ECC: P-256	RFC6637, RFC4880bis draft		Gnuk >= 1.2.0
Encryption	ECDH	NIST ECC: P-384	RFC6637, RFC4880bis draft
Encryption	ECDH	NIST ECC: P-521	RFC6637, RFC4880bis draft
Encryption	ECDH	ECC Brainpool: brainpoolP256r1	RFC4880bis draft
Encryption	ECDH	ECC Brainpool: brainpoolP384r1
Encryption	ECDH	ECC Brainpool: brainpoolP512r1	RFC4880bis draft
Encryption	ECDH	SECG: secp256k1		libgcrypt >= 1.7.0	Gnuk >= 1.2.0
Encryption	ECDH	RFC7748: Curve25519	RFC4880bis draft	libgcrypt >= 1.7.0	Gnuk >= 1.2.0

-  ⇤ ← Revision 24 as of 2017-10-07 10:32:45 → 
  Size: 5692
  Editor: Olf
  Comment:
+   ← Revision 25 as of 2017-10-20 20:12:02 → ⇥
  Size: 5800
  Editor: Olf
  Comment: Linked English Brainpool document, describing its curve parameter creation
-Deletions are marked like this.
+Additions are marked like this.
 Line 19:
-| Signature | [[https://en.wikipedia.org/wiki/Elliptic_Curve_DSA|ECDSA]] | [[http://www.ecc-brainpool.org/download.htm|ECC Brainpool]]: **[[https://tools.ietf.org/html/rfc5639|brainpoolP256r1]]** | [[https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis|RFC4880bis draft]] |            |        |
| Signature | [[https://en.wikipedia.org/wiki/Elliptic_Curve_DSA|ECDSA]] | [[http://www.ecc-brainpool.org/download.htm|ECC Brainpool]]: **[[https://tools.ietf.org/html/rfc5639|brainpoolP384r1]]** |   |         |        |
| Signature | [[https://en.wikipedia.org/wiki/Elliptic_Curve_DSA|ECDSA]] | [[http://www.ecc-brainpool.org/download.htm|ECC Brainpool]]: **[[https://tools.ietf.org/html/rfc5639|brainpoolP512r1]]** | [[https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis|RFC4880bis draft]] |        |        |
+| Signature | [[https://en.wikipedia.org/wiki/Elliptic_Curve_DSA|ECDSA]] | [[http://www.ecc-brainpool.org/download/Domain-parameters.pdf|ECC Brainpool]]: **[[https://tools.ietf.org/html/rfc5639|brainpoolP256r1]]** | [[https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis|RFC4880bis draft]] |            |        |
| Signature | [[https://en.wikipedia.org/wiki/Elliptic_Curve_DSA|ECDSA]] | [[http://www.ecc-brainpool.org/download/Domain-parameters.pdf|ECC Brainpool]]: **[[https://tools.ietf.org/html/rfc5639|brainpoolP384r1]]** |   |         |        |
| Signature | [[https://en.wikipedia.org/wiki/Elliptic_Curve_DSA|ECDSA]] | [[http://www.ecc-brainpool.org/download/Domain-parameters.pdf|ECC Brainpool]]: **[[https://tools.ietf.org/html/rfc5639|brainpoolP512r1]]** | [[https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis|RFC4880bis draft]] |        |        |
 Line 27:
-| Encryption | [[https://en.wikipedia.org/wiki/ECDH|ECDH]] | [[http://www.ecc-brainpool.org/download.htm|ECC Brainpool]]: **[[https://tools.ietf.org/html/rfc5639|brainpoolP256r1]]** | [[https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis|RFC4880bis draft]] |         |        |
| Encryption | [[https://en.wikipedia.org/wiki/ECDH|ECDH]] | [[http://www.ecc-brainpool.org/download.htm|ECC Brainpool]]: **[[https://tools.ietf.org/html/rfc5639|brainpoolP384r1]]** |    |         |        |
| Encryption | [[https://en.wikipedia.org/wiki/ECDH|ECDH]] | [[http://www.ecc-brainpool.org/download.htm|ECC Brainpool]]: **[[https://tools.ietf.org/html/rfc5639|brainpoolP512r1]]** | [[https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis|RFC4880bis draft]] |         |        |
+| Encryption | [[https://en.wikipedia.org/wiki/ECDH|ECDH]] | [[http://www.ecc-brainpool.org/download/Domain-parameters.pdf|ECC Brainpool]]: **[[https://tools.ietf.org/html/rfc5639|brainpoolP256r1]]** | [[https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis|RFC4880bis draft]] |         |        |
| Encryption | [[https://en.wikipedia.org/wiki/ECDH|ECDH]] | [[http://www.ecc-brainpool.org/download/Domain-parameters.pdf|ECC Brainpool]]: **[[https://tools.ietf.org/html/rfc5639|brainpoolP384r1]]** |    |         |        |
| Encryption | [[https://en.wikipedia.org/wiki/ECDH|ECDH]] | [[http://www.ecc-brainpool.org/download/Domain-parameters.pdf|ECC Brainpool]]: **[[https://tools.ietf.org/html/rfc5639|brainpoolP512r1]]** | [[https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis|RFC4880bis draft]] |         |        |