handle RedDSA as EdDSA

libi2pd/Identity.cpp

@@ -77,6 +77,7 @@ namespace data
 					LogPrint (eLogError, "Identity: RSA signing key type ", (int)type, " is not supported");
 				break;
 				case SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519:
+				case SIGNING_KEY_TYPE_REDDSA_SHA512_ED25519:
 				{
 					size_t padding = 128 - i2p::crypto::EDDSA25519_PUBLIC_KEY_LENGTH; // 96 = 128 - 32
 					RAND_bytes (m_StandardIdentity.signingKey, padding);
@@ -331,6 +332,7 @@ namespace data
 			case SIGNING_KEY_TYPE_ECDSA_SHA512_P521:
 				return new i2p::crypto::ECDSAP521Verifier ();
 			case SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519:
+			case SIGNING_KEY_TYPE_REDDSA_SHA512_ED25519:
 				return new i2p::crypto::EDDSA25519Verifier ();
 			case SIGNING_KEY_TYPE_GOSTR3410_CRYPTO_PRO_A_GOSTR3411_256:
 				return new i2p::crypto::GOSTR3410_256_Verifier (i2p::crypto::eGOSTR3410CryptoProA);
@@ -603,6 +605,7 @@ namespace data
 				LogPrint (eLogError, "Identity: RSA signing key type ", (int)m_Public->GetSigningKeyType (), " is not supported");
 			break;
 			case SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519:
+			case SIGNING_KEY_TYPE_REDDSA_SHA512_ED25519:
 				m_Signer.reset (new i2p::crypto::EDDSA25519Signer (m_SigningPrivateKey, IsOfflineSignature () ? nullptr: m_Public->GetStandardIdentity ().certificate - i2p::crypto::EDDSA25519_PUBLIC_KEY_LENGTH)); // TODO: remove public key check
 			break;
 			case SIGNING_KEY_TYPE_GOSTR3410_CRYPTO_PRO_A_GOSTR3411_256:
@@ -695,6 +698,7 @@ namespace data
 				LogPrint (eLogWarning, "Identity: RSA signature type is not supported. Creating EdDSA");
 			// no break here
 			case SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519:
+			case SIGNING_KEY_TYPE_REDDSA_SHA512_ED25519:
 				i2p::crypto::CreateEDDSA25519RandomKeys (priv, pub);
 			break;
 			case SIGNING_KEY_TYPE_GOSTR3410_CRYPTO_PRO_A_GOSTR3411_256:

libi2pd/Identity.h

@@ -67,9 +67,9 @@ namespace data
 	const uint16_t SIGNING_KEY_TYPE_RSA_SHA512_4096 = 6;
 	const uint16_t SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519 = 7;
 	const uint16_t SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519ph = 8; // not implemented
-	// following signature type should never appear in netid=2
 	const uint16_t SIGNING_KEY_TYPE_GOSTR3410_CRYPTO_PRO_A_GOSTR3411_256 = 9;
 	const uint16_t SIGNING_KEY_TYPE_GOSTR3410_TC26_A_512_GOSTR3411_512 = 10; // approved by FSB
+	const uint16_t SIGNING_KEY_TYPE_REDDSA_SHA512_ED25519 = 11; // for LeaseSet2 only
 
 	typedef uint16_t SigningKeyType;
 	typedef uint16_t CryptoKeyType;