From: Jonathan McDowell <noodles@earth.li>
Date: Thu, 5 Mar 2015 15:27:14 +0000 (+0000)
Subject: Add additional ECC OIDs
X-Git-Tag: onak-0.4.6~12
X-Git-Url: http://the.earth.li/gitweb/?p=onak.git;a=commitdiff_plain;h=a8fdcdb2112c5cdb795818fe5a6c9e4261713d90

Add additional ECC OIDs

In addition to the 3 NIST curves add Ed25519, the 3 brainpool curves and
secp256k1 (as used in Bitcoin).
---

diff --git a/keyindex.c b/keyindex.c
index 4dbb074..a26d458 100644
--- a/keyindex.c
+++ b/keyindex.c
@@ -94,7 +94,20 @@ unsigned int keylength(struct openpgp_packet *keydata)
 		case OPENPGP_PKALGO_EC:
 		case OPENPGP_PKALGO_ECDSA:
 			/* Elliptic curve key size is based on OID */
-			if ((keydata->data[6] == 8) &&
+			/* Ed25519 / 1.3.6.1.4.1.11591.15.1 */
+			if ((keydata->data[6] == 9) &&
+					(keydata->data[7] == 0x2B) &&
+					(keydata->data[8] == 0x06) &&
+					(keydata->data[9] == 0x01) &&
+					(keydata->data[10] == 0x04) &&
+					(keydata->data[11] == 0x01) &&
+					(keydata->data[12] == 0xDA) &&
+					(keydata->data[13] == 0x47) &&
+					(keydata->data[14] == 0x0F) &&
+					(keydata->data[15] == 0x01)) {
+				length = 256;
+			/* nistp256 / 1.2.840.10045.3.1.7 */
+			} else if ((keydata->data[6] == 8) &&
 					(keydata->data[7] == 0x2A) &&
 					(keydata->data[8] == 0x86) &&
 					(keydata->data[9] == 0x48) &&
@@ -104,6 +117,7 @@ unsigned int keylength(struct openpgp_packet *keydata)
 					(keydata->data[13] == 0x01) &&
 					(keydata->data[14] == 0x07)) {
 				length = 256;
+			/* nistp384 / 1.3.132.0.34 */
 			} else if ((keydata->data[6] == 5) &&
 					(keydata->data[7] == 0x2B) &&
 					(keydata->data[8] == 0x81) &&
@@ -111,6 +125,7 @@ unsigned int keylength(struct openpgp_packet *keydata)
 					(keydata->data[10] == 0x00) &&
 					(keydata->data[11] == 0x22)) {
 				length = 384;
+			/* nistp521 / 1.3.132.0.35 */
 			} else if ((keydata->data[6] == 5) &&
 					(keydata->data[7] == 0x2B) &&
 					(keydata->data[8] == 0x81) &&
@@ -118,6 +133,50 @@ unsigned int keylength(struct openpgp_packet *keydata)
 					(keydata->data[10] == 0x00) &&
 					(keydata->data[11] == 0x23)) {
 				length = 521;
+			/* brainpoolP256r1 / 1.3.36.3.3.2.8.1.1.7 */
+			} else if ((keydata->data[6] == 9) &&
+					(keydata->data[7] == 0x2B) &&
+					(keydata->data[8] == 0x24) &&
+					(keydata->data[9] == 0x03) &&
+					(keydata->data[10] == 0x03) &&
+					(keydata->data[11] == 0x02) &&
+					(keydata->data[12] == 0x08) &&
+					(keydata->data[13] == 0x01) &&
+					(keydata->data[14] == 0x01) &&
+					(keydata->data[15] == 0x07)) {
+				length = 256;
+			/* brainpoolP384r1 / 1.3.36.3.3.2.8.1.1.11 */
+			} else if ((keydata->data[6] == 9) &&
+					(keydata->data[7] == 0x2B) &&
+					(keydata->data[8] == 0x24) &&
+					(keydata->data[9] == 0x03) &&
+					(keydata->data[10] == 0x03) &&
+					(keydata->data[11] == 0x02) &&
+					(keydata->data[12] == 0x08) &&
+					(keydata->data[13] == 0x01) &&
+					(keydata->data[14] == 0x01) &&
+					(keydata->data[15] == 0x0B)) {
+				length = 384;
+			/* brainpoolP512r1 / 1.3.36.3.3.2.8.1.1.13 */
+			} else if ((keydata->data[6] == 9) &&
+					(keydata->data[7] == 0x2B) &&
+					(keydata->data[8] == 0x24) &&
+					(keydata->data[9] == 0x03) &&
+					(keydata->data[10] == 0x03) &&
+					(keydata->data[11] == 0x02) &&
+					(keydata->data[12] == 0x08) &&
+					(keydata->data[13] == 0x01) &&
+					(keydata->data[14] == 0x01) &&
+					(keydata->data[15] == 0x0D)) {
+				length = 512;
+			/* secp256k1 / 1.3.132.0.10 */
+			} else if ((keydata->data[6] == 5) &&
+					(keydata->data[7] == 0x2B) &&
+					(keydata->data[8] == 0x81) &&
+					(keydata->data[9] == 0x04) &&
+					(keydata->data[10] == 0x00) &&
+					(keydata->data[11] == 0x0A)) {
+				length = 256;
 			} else {
 				logthing(LOGTHING_ERROR,
 					"Unknown elliptic curve size");