diff --git a/CMakeLists.txt b/CMakeLists.txt
index c6604e2..8fa265e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,13 +12,19 @@ find_package(OpenSSL 1.1 REQUIRED)
 
 include_directories( ${OPENSSL_INCLUDE_DIR} )
 
+if (${CMAKE_SYSTEM_NAME} STREQUAL Emscripten)
+	set (src_main src/wasm.cpp)
+else()
+	set (src_main src/main.cpp)
+endif()
+
 add_executable( ${CMAKE_PROJECT_NAME}
 	src/ec.cpp
 	src/base58.cpp
 	src/checksum.cpp
 	src/WIF.cpp
 	src/utils.cpp
-	src/main.cpp
+	${src_main}
 )
 
 target_link_libraries( ${CMAKE_PROJECT_NAME} PUBLIC ${OPENSSL_LIBRARIES} )
diff --git a/src/wasm.cpp b/src/wasm.cpp
new file mode 100644
index 0000000..8c48e70
--- /dev/null
+++ b/src/wasm.cpp
@@ -0,0 +1,42 @@
+/**
+ * MIT License
+ *
+ * Copyright (c) 2019-2020 EOS Sw/eden
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include <emscripten.h>
+#include <emscripten/bind.h>
+#include <emscripten/val.h>
+#include <string>
+#include "WIF.h"
+#include "ec.h"
+
+emscripten::val keygen(void) {
+	struct ec_keypair pair;
+	std::string ret = "";
+	ec_generate_key(&pair);
+
+	ret = wif_pub_encode(pair.pub) + ":" + wif_priv_encode(pair.secret);
+	return emscripten::val(ret);
+}
+
+EMSCRIPTEN_BINDINGS(eosiokeygen) {
+  emscripten::function("eosio_keygen", &keygen);
+}