Diff for "ECC" - GnuPG wiki

Differences between revisions 1 and 16 (spanning 15 versions)

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 2.1 supports ECC.

Table of ECC supported functions:

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

-  ⇤ ← Revision 1 as of 2015-11-05 16:49:55 → 
  Size: 498
  Editor: bernhard
  Comment: created
+   ← Revision 16 as of 2017-08-24 21:10:00 → ⇥
  Size: 4744
  Editor: Olf
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 1:
-//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 [[https://en.wikipedia.org/wiki/Elliptic_curve_cryptography|Wikipedia]] 2015-11-05
+=== Background: ===
-Line 7:
+Line 3:
-http://arstechnica.com/security/2013/10/a-relatively-easy-to-understand-primer-on-elliptic-curve-cryptography/1/
+* //"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."//, 
[[https://en.wikipedia.org/wiki/Elliptic_curve_cryptography|ECC at Wikipedia]], 2015-11-05

* [[https://arstechnica.com/security/2013/10/a-relatively-easy-to-understand-primer-on-elliptic-curve-cryptography/|Arstechnica: A relatively easy to understand primer on Elliptic Curve Cryptography]]

* GnuPG 2.1 supports ECC. 


=== Table of ECC supported functions: ===

|= Function |= Protocol |= Curve |= OpenPGP spec. |= Library dependency |=Token |
| 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]] |           |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-384]]** | [[https://tools.ietf.org/html/rfc6637|RFC6637]] |           |        |
| 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-521]]** | [[https://tools.ietf.org/html/rfc6637|RFC6637]] |           |        |
| 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]]** |   |            |        |
| 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]]** |   |        |        |
| 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]] |           |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-384]]** | [[https://tools.ietf.org/html/rfc6637|RFC6637]] |           |        |
| 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-521]]** | [[https://tools.ietf.org/html/rfc6637|RFC6637]] |           |        |
| Encryption | [[https://en.wikipedia.org/wiki/ECDH|ECDH]] | [[http://www.ecc-brainpool.org/download.htm|ECC Brainpool]]: **[[https://tools.ietf.org/html/rfc5639|brainpoolP256r1]]** |    |         |        |
| 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]]** |    |         |        |
| 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]]** |         |libgcrypt 1.7|Gnuk 1.2|