diff --git a/src/wif/codec.hpp b/src/wif/codec.hpp
new file mode 100644
index 0000000..2c38d44
--- /dev/null
+++ b/src/wif/codec.hpp
@@ -0,0 +1,52 @@
+/**
+ * MIT License
+ *
+ * Copyright (c) 2019-2021 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.
+ */
+#ifndef LIBEOSIO_CODEC_H
+#define LIBEOSIO_CODEC_H
+
+#include <libeosio/WIF.hpp>
+#include <vector>
+
+namespace libeosio { namespace internal {
+
+/**
+ * Public-key encoders
+ */
+typedef void (*pub_encoder_t)(const ec_pubkey_t& key, unsigned char *buf);
+
+void pub_encoder_legacy(const ec_pubkey_t& key, unsigned char *buf);
+
+void pub_encoder_k1(const ec_pubkey_t& key, unsigned char *buf);
+
+/**
+ * Public-key decoders
+ */
+typedef bool (*pub_decoder_t)(const std::vector<unsigned char>& buf, ec_pubkey_t& key);
+
+bool pub_decoder_legacy(const std::vector<unsigned char>& buf, ec_pubkey_t& key);
+
+bool pub_decoder_k1(const std::vector<unsigned char>& buf, ec_pubkey_t& key);
+
+}} // namespace libeosio::internal
+
+#endif /* LIBEOSIO_CODEC_H */