check if chacha20 and poly1305 is presented in openssl build

libi2pd/ChaCha20.cpp

@@ -11,7 +11,7 @@
 
 #include "ChaCha20.h"
 
-#if LEGACY_OPENSSL
+#if !OPENSSL_AEAD_CHACHA20_POLY1305 
 namespace i2p
 {
 namespace crypto

libi2pd/ChaCha20.h

@@ -16,7 +16,7 @@
 #include <string.h>
 #include "Crypto.h"
 
-#if LEGACY_OPENSSL
+#if !OPENSSL_AEAD_CHACHA20_POLY1305
 namespace i2p
 {
 namespace crypto

libi2pd/Crypto.cpp

@@ -9,8 +9,7 @@
 #include "TunnelBase.h"
 #include <openssl/ssl.h>
 #include "Crypto.h"
-#if LEGACY_OPENSSL
+#if !OPENSSL_AEAD_CHACHA20_POLY1305
-#include <openssl/conf.h>
 #include "ChaCha20.h"
 #include "Poly1305.h"
 #endif
@@ -1091,7 +1090,32 @@ namespace crypto
 		if (len < msgLen) return false;
 		if (encrypt && len < msgLen + 16) return false;
 		bool ret = true;
-#if LEGACY_OPENSSL
+#if OPENSSL_AEAD_CHACHA20_POLY1305
+		int outlen = 0;
+		EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new ();
+		if (encrypt)
+		{
+			EVP_EncryptInit_ex(ctx, EVP_chacha20_poly1305(), 0, 0, 0);
+			EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, 12, 0);
+			EVP_EncryptInit_ex(ctx, NULL, NULL, key, nonce);
+			EVP_EncryptUpdate(ctx, NULL, &outlen, ad, adLen);
+			EVP_EncryptUpdate(ctx, buf, &outlen, msg, msgLen);
+			EVP_EncryptFinal_ex(ctx, buf, &outlen);
+			EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG, 16, buf + msgLen);
+		}
+		else
+		{
+			EVP_DecryptInit_ex(ctx, EVP_chacha20_poly1305(), 0, 0, 0);
+			EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, 12, 0);
+			EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, 16, (uint8_t *)(msg + msgLen));
+			EVP_DecryptInit_ex(ctx, NULL, NULL, key, nonce);
+			EVP_DecryptUpdate(ctx, NULL, &outlen, ad, adLen);
+			EVP_DecryptUpdate(ctx, buf, &outlen, msg, msgLen);
+			ret = EVP_DecryptFinal_ex(ctx, buf + outlen, &outlen) > 0;
+		}
+
+		EVP_CIPHER_CTX_free (ctx);
+#else		
 		chacha::Chacha20State state;
 		// generate one time poly key
 		chacha::Chacha20Init (state, nonce, key, 0);	
@@ -1150,31 +1174,6 @@ namespace crypto
 			polyHash.Finish (tag);	
 			if (memcmp (tag, msg + msgLen, 16)) ret = false; // compare with provided
 		}
-#else
-		int outlen = 0;
-		EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new ();
-		if (encrypt)
-		{
-			EVP_EncryptInit_ex(ctx, EVP_chacha20_poly1305(), 0, 0, 0);
-			EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, 12, 0);
-			EVP_EncryptInit_ex(ctx, NULL, NULL, key, nonce);
-			EVP_EncryptUpdate(ctx, NULL, &outlen, ad, adLen);
-			EVP_EncryptUpdate(ctx, buf, &outlen, msg, msgLen);
-			EVP_EncryptFinal_ex(ctx, buf, &outlen);
-			EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG, 16, buf + msgLen);
-		}
-		else
-		{
-			EVP_DecryptInit_ex(ctx, EVP_chacha20_poly1305(), 0, 0, 0);
-			EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, 12, 0);
-			EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, 16, (uint8_t *)(msg + msgLen));
-			EVP_DecryptInit_ex(ctx, NULL, NULL, key, nonce);
-			EVP_DecryptUpdate(ctx, NULL, &outlen, ad, adLen);
-			EVP_DecryptUpdate(ctx, buf, &outlen, msg, msgLen);
-			ret = EVP_DecryptFinal_ex(ctx, buf + outlen, &outlen) > 0;
-		}
-
-		EVP_CIPHER_CTX_free (ctx);
 #endif
 		return ret;
 	}
@@ -1182,7 +1181,18 @@ namespace crypto
 	void AEADChaCha20Poly1305Encrypt (const std::vector<std::pair<uint8_t *, size_t> >& bufs, const uint8_t * key, const uint8_t * nonce, uint8_t * mac)
 	{
 		if (bufs.empty ()) return;
-#if LEGACY_OPENSSL
+#if OPENSSL_AEAD_CHACHA20_POLY1305
+		int outlen = 0;
+		EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new ();
+		EVP_EncryptInit_ex(ctx, EVP_chacha20_poly1305(), 0, 0, 0);
+		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, 12, 0);
+		EVP_EncryptInit_ex(ctx, NULL, NULL, key, nonce);
+		for (const auto& it: bufs)	
+			EVP_EncryptUpdate(ctx, it.first, &outlen, it.first, it.second);
+		EVP_EncryptFinal_ex(ctx, NULL, &outlen);
+		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG, 16, mac);
+		EVP_CIPHER_CTX_free (ctx);
+#else		
 		chacha::Chacha20State state;
 		// generate one time poly key
 		chacha::Chacha20Init (state, nonce, key, 0);	
@@ -1215,17 +1225,6 @@ namespace crypto
 		polyHash.Update (padding, 16);	
 		// MAC
 		polyHash.Finish ((uint64_t *)mac);	
-#else
-		int outlen = 0;
-		EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new ();
-		EVP_EncryptInit_ex(ctx, EVP_chacha20_poly1305(), 0, 0, 0);
-		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, 12, 0);
-		EVP_EncryptInit_ex(ctx, NULL, NULL, key, nonce);
-		for (const auto& it: bufs)	
-			EVP_EncryptUpdate(ctx, it.first, &outlen, it.first, it.second);
-		EVP_EncryptFinal_ex(ctx, NULL, &outlen);
-		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG, 16, mac);
-		EVP_CIPHER_CTX_free (ctx);
 #endif		
 	}
 

libi2pd/Crypto.h

@@ -30,6 +30,9 @@
 #	   define OPENSSL_X25519 1
 #	   define OPENSSL_SIPHASH 1
 #   endif
+#   if !defined OPENSSL_NO_CHACHA && !defined OPENSSL_NO_POLY1305 // some builds might not include them
+#	   define OPENSSL_AEAD_CHACHA20_POLY1305 1 
+#   endif
 #endif
 
 namespace i2p

libi2pd/Poly1305.cpp

@@ -7,7 +7,7 @@
 
  */
 
-#if LEGACY_OPENSSL
+#if !OPENSSL_AEAD_CHACHA20_POLY1305 
 namespace i2p
 {
 namespace crypto

libi2pd/Poly1305.h

@@ -11,7 +11,7 @@
 #include <cstring>
 #include "Crypto.h"
 
-#if LEGACY_OPENSSL
+#if !OPENSSL_AEAD_CHACHA20_POLY1305 
 namespace i2p
 {
 namespace crypto