修改公钥长度为2048, 复制原证书的过期时间

platform/src/key_keeper.cpp

@@ -337,7 +337,8 @@ static long keyring_local_cache_query_cb(void * data, const uchar * key, uint si
 static struct keyring_private* generate_x509_keyring(X509* origin_cert, X509* ca, EVP_PKEY* cakey)
 {
 	//TODO: could be optimized to save cpu.
-	EVP_PKEY* forge_key = ssl_key_genrsa(1024);
+	
+	EVP_PKEY* forge_key = ssl_key_genrsa(2048);
 	X509* forge_cert = ssl_x509_forge(ca, cakey, origin_cert, forge_key, NULL, NULL);
 	STACK_OF(X509)* chain = sk_X509_new_null();
 	sk_X509_push(chain, ca);