Diff for "ECC" - GnuPG wiki

Differences between revisions 21 and 22

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	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 21 as of 2017-10-07 07:19:08 → 
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  Editor: Olf
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+   ← Revision 22 as of 2017-10-07 10:13:18 → ⇥
  Size: 5678
  Editor: Olf
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 16:
-| Signature | [[https://en.wikipedia.org/wiki/Elliptic_Curve_DSA|ECDSA]] | [[https://beta.csrc.nist.gov/Projects/Elliptic-Curve-Cryptography|NIST ECC]]: **[[http://csrc.nist.gov/groups/ST/toolkit/documents/dss/NISTReCur.pdf|P-256]]** | [[https://tools.ietf.org/html/rfc6637|RFC6637]], [[https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis|RFC4880bis draft]] |           |Gnuk 1.2|
+| Signature | [[https://en.wikipedia.org/wiki/Elliptic_Curve_DSA|ECDSA]] | [[https://beta.csrc.nist.gov/Projects/Elliptic-Curve-Cryptography|NIST ECC]]: **[[http://csrc.nist.gov/groups/ST/toolkit/documents/dss/NISTReCur.pdf|P-256]]** | [[https://tools.ietf.org/html/rfc6637|RFC6637]], [[https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis|RFC4880bis draft]] |           |Gnuk >= 1.2.0|
 Line 22:
-| Signature | [[https://en.wikipedia.org/wiki/Elliptic_Curve_DSA|ECDSA]] | [[http://www.secg.org/|SECG]]: **[[http://www.secg.org/sec2-v2.pdf|secp256k1]]** |         |libgcrypt 1.7|Gnuk 1.2|
| Signature | [[https://en.wikipedia.org/wiki/EdDSA|EdDSA]] | [[https://tools.ietf.org/html/rfc8032|RFC8032]]: **[[https://tools.ietf.org/html/rfc8032#section-5.1|Ed25519]]** | [[https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis|RFC4880bis draft]] |           |Gnuk 1.2|
| Encryption | [[https://en.wikipedia.org/wiki/ECDH|ECDH]] | [[https://beta.csrc.nist.gov/Projects/Elliptic-Curve-Cryptography|NIST ECC]]: **[[http://csrc.nist.gov/groups/ST/toolkit/documents/dss/NISTReCur.pdf|P-256]]** | [[https://tools.ietf.org/html/rfc6637|RFC6637]], [[https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis|RFC4880bis draft]] |           |Gnuk 1.2|
+| Signature | [[https://en.wikipedia.org/wiki/Elliptic_Curve_DSA|ECDSA]] | [[http://www.secg.org/|SECG]]: **[[http://www.secg.org/sec2-v2.pdf|secp256k1]]** |         |libgcrypt >= 1.7.0|Gnuk >= 1.2.0|
| Signature | [[https://en.wikipedia.org/wiki/EdDSA|EdDSA]] | [[https://tools.ietf.org/html/rfc8032|RFC8032]]: **[[https://tools.ietf.org/html/rfc8032#section-5.1|Ed25519]]** | [[https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis|RFC4880bis draft]] |           |Gnuk >= 1.2.0|
| Encryption | [[https://en.wikipedia.org/wiki/ECDH|ECDH]] | [[https://beta.csrc.nist.gov/Projects/Elliptic-Curve-Cryptography|NIST ECC]]: **[[http://csrc.nist.gov/groups/ST/toolkit/documents/dss/NISTReCur.pdf|P-256]]** | [[https://tools.ietf.org/html/rfc6637|RFC6637]], [[https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis|RFC4880bis draft]] |           |Gnuk >= 1.2.0|
 Line 30:
-| Encryption | [[https://en.wikipedia.org/wiki/ECDH|ECDH]] | [[http://www.secg.org/|SECG]]: **[[http://www.secg.org/sec2-v2.pdf|secp256k1]]** |         |libgcrypt 1.7|Gnuk 1.2|
| Encryption | [[https://en.wikipedia.org/wiki/ECDH|ECDH]] | [[https://tools.ietf.org/html/rfc7748|RFC7748]]: **[[https://tools.ietf.org/html/rfc7748#section-4.1|Curve25519]]** | [[https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis|RFC4880bis draft]] |libgcrypt 1.7|Gnuk 1.2|
+| Encryption | [[https://en.wikipedia.org/wiki/ECDH|ECDH]] | [[http://www.secg.org/|SECG]]: **[[http://www.secg.org/sec2-v2.pdf|secp256k1]]** |         |libgcrypt >= 1.7.0|Gnuk >= 1.2.0|
| Encryption | [[https://en.wikipedia.org/wiki/ECDH|ECDH]] | [[https://tools.ietf.org/html/rfc7748|RFC7748]]: **[[https://tools.ietf.org/html/rfc7748#section-4.1|Curve25519]]** | [[https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis|RFC4880bis draft]] |libgcrypt >= 1.7.0|Gnuk >= 1.2.0|