diff --git a/README.md b/README.md
index 36868ae..fe9e24c 100644
--- a/README.md
+++ b/README.md
@@ -13,6 +13,7 @@ Project or files:
 ├── __crypto
 │   ├── btc-address
 │   ├── crypto
+│   ├── curve25519
 │   ├── jsonwebtoken
 │   ├── pwhash
 │   ├── random
@@ -72,6 +73,7 @@ Project or files:
 │   └── tantivy
 ├── __serialization
 │   ├── bytes
+│   ├── cbor
 │   ├── csv
 │   ├── encoding
 │   ├── flatbuffers
@@ -130,7 +132,7 @@ Project or files:
     ├── vec.rs
     └── while.rs
 
-102 directories, 26 files
+104 directories, 26 files
 
 ```
 
diff --git a/__serialization/cbor/Cargo.lock b/__serialization/cbor/Cargo.lock
new file mode 100644
index 0000000..0c0837d
--- /dev/null
+++ b/__serialization/cbor/Cargo.lock
@@ -0,0 +1,110 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "byteorder"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fc10e8cc6b2580fda3f36eb6dc5316657f812a3df879a44a66fc9f0fdbc4855"
+
+[[package]]
+name = "cbor"
+version = "0.1.0"
+dependencies = [
+ "cbor 0.4.1",
+ "hex",
+ "serde",
+ "serde_cbor",
+]
+
+[[package]]
+name = "cbor"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e56053652b4b5c0ded5ae6183c7cd547ad2dd6bcce149658bef052a4995533bd"
+dependencies = [
+ "byteorder",
+ "rustc-serialize",
+]
+
+[[package]]
+name = "half"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d36fab90f82edc3c747f9d438e06cf0a491055896f2a279638bb5beed6c40177"
+
+[[package]]
+name = "hex"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "644f9158b2f133fd50f5fb3242878846d9eb792e445c893805ff0e3824006e35"
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e0704ee1a7e00d7bb417d0770ea303c1bccbabf0ef1667dae92b5967f5f8a71"
+dependencies = [
+ "unicode-xid",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa563d17ecb180e500da1cfd2b028310ac758de548efdd203e18f283af693f37"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "rustc-serialize"
+version = "0.3.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dcf128d1287d2ea9d80910b5f1120d0b8eede3fbf1abe91c40d39ea7d51e6fda"
+
+[[package]]
+name = "serde"
+version = "1.0.117"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b88fa983de7720629c9387e9f517353ed404164b1e482c970a90c1a4aaf7dc1a"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_cbor"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e18acfa2f90e8b735b2836ab8d538de304cbb6729a7360729ea5a895d15a622"
+dependencies = [
+ "half",
+ "serde",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.117"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cbd1ae72adb44aab48f325a02444a5fc079349a8d804c1fc922aed3f7454c74e"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "syn"
+version = "1.0.48"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cc371affeffc477f42a221a1e4297aedcea33d47d19b61455588bd9d8f6b19ac"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-xid",
+]
+
+[[package]]
+name = "unicode-xid"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
diff --git a/__serialization/cbor/Cargo.toml b/__serialization/cbor/Cargo.toml
new file mode 100644
index 0000000..628ce09
--- /dev/null
+++ b/__serialization/cbor/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "cbor"
+version = "0.1.0"
+authors = ["Hatter Jiang <jht5945@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+cbor = "0.4.1"
+serde = { version = "1.0", features = ["derive"] }
+serde_cbor = "0.11.1"
+hex = "*"
+
diff --git a/__serialization/cbor/src/main.rs b/__serialization/cbor/src/main.rs
new file mode 100644
index 0000000..73e31e7
--- /dev/null
+++ b/__serialization/cbor/src/main.rs
@@ -0,0 +1,20 @@
+use cbor::{Decoder, Encoder};
+
+fn main() {
+    let data = vec![('a', 1), ('b', 2), ('c', 3)];
+
+    println!("Encode/Decode by cbor");
+    let mut e = Encoder::from_memory();
+    e.encode(&data).unwrap();
+    let encoded_bytes = e.as_bytes();
+    println!("Encoded: {}", hex::encode(encoded_bytes));
+    let mut d = Decoder::from_bytes(e.as_bytes());
+    let items: Vec<(char, i32)> = d.decode().collect::<Result<_, _>>().unwrap();
+    println!("Decoded: {:?}", items);
+
+    println!("\nEncode/Decode by serde_cbor");
+    let encoded_bytes_by_serde = serde_cbor::to_vec(&data).unwrap();
+    println!("Encoded: {}", hex::encode(&encoded_bytes_by_serde));
+    let items: Vec<(char, u8)> = serde_cbor::from_slice(&encoded_bytes_by_serde).unwrap();
+    println!("Decoded: {:?}", items);
+}