actual key size for LS2

libi2pd/CryptoKey.h

@@ -22,6 +22,7 @@ namespace crypto
 
 			virtual ~CryptoKeyDecryptor () {};
 			virtual bool Decrypt (const uint8_t * encrypted, uint8_t * data, BN_CTX * ctx, bool zeroPadding) = 0; // 512/514 bytes encrypted, 222 bytes data
+			virtual size_t GetPublicKeyLen () const = 0; // we need it to set key in LS2
 	};
 
 // ElGamal
@@ -43,7 +44,8 @@ namespace crypto
 
 			ElGamalDecryptor (const uint8_t * priv);
 			bool Decrypt (const uint8_t * encrypted, uint8_t * data, BN_CTX * ctx, bool zeroPadding);
-
+			size_t GetPublicKeyLen () const { return 256; };
+			
 		private:
 
 			uint8_t m_PrivateKey[256];
@@ -73,7 +75,8 @@ namespace crypto
 			ECIESP256Decryptor (const uint8_t * priv);
 			~ECIESP256Decryptor ();
 			bool Decrypt (const uint8_t * encrypted, uint8_t * data, BN_CTX * ctx, bool zeroPadding);
-
+			size_t GetPublicKeyLen () const { return 64; };
+			
 		private:
 
 			EC_GROUP * m_Curve;
@@ -105,7 +108,8 @@ namespace crypto
 			ECIESGOSTR3410Decryptor (const uint8_t * priv);
 			~ECIESGOSTR3410Decryptor ();
 			bool Decrypt (const uint8_t * encrypted, uint8_t * data, BN_CTX * ctx, bool zeroPadding);
-
+			size_t GetPublicKeyLen () const { return 64; };
+			
 		private:
 
 			BIGNUM * m_PrivateKey;

libi2pd/Destination.cpp

@@ -1037,8 +1037,9 @@ namespace client
 		else
 		{
 			// standard LS2 (type 3) assumed for now. TODO: implement others
+			auto keyLen = m_Decryptor ? m_Decryptor->GetPublicKeyLen () : 256;
 			leaseSet = new i2p::data::LocalLeaseSet2 (i2p::data::NETDB_STORE_TYPE_STANDARD_LEASESET2,
-				GetIdentity (), GetIdentity ()->GetCryptoKeyType (), 256, m_EncryptionPublicKey, tunnels);
+				GetIdentity (), GetIdentity ()->GetCryptoKeyType (), keyLen, m_EncryptionPublicKey, tunnels);
 			// sign
 			Sign (leaseSet->GetBuffer () - 1, leaseSet->GetBufferLen () - leaseSet->GetSignatureLen () + 1, leaseSet->GetSignature ()); // + leading store type
 		}