diff --git a/Cargo.lock b/Cargo.lock
index 470d600..be447f8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -65,6 +65,18 @@ version = "1.0.82"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f538837af36e6f6a9be0faa67f9a314f8119e4e4b5867c6ab40ed60360142519"
 
+[[package]]
+name = "arrayref"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6b4930d2cb77ce62f89ee5d5289b4ac049559b1c45539271f5ed4fdc7db34545"
+
+[[package]]
+name = "arrayvec"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96d30a06541fbafbc7f82ed10c06164cfbd2c401138f6addd8404629c4b16711"
+
 [[package]]
 name = "base64"
 version = "0.22.0"
@@ -86,12 +98,31 @@ version = "0.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "349f9b6a179ed607305526ca489b34ad0a41aed5f7980fa90eb03160b69598fb"
 
+[[package]]
+name = "blake3"
+version = "1.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30cca6d3674597c30ddf2c587bf8d9d65c9a84d2326d941cc79c9842dfe0ef52"
+dependencies = [
+ "arrayref",
+ "arrayvec",
+ "cc",
+ "cfg-if",
+ "constant_time_eq",
+]
+
 [[package]]
 name = "bumpalo"
 version = "3.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "79296716171880943b8470b5f8d03aa55eb2e645a4874bdbb28adb49162e012c"
 
+[[package]]
+name = "cc"
+version = "1.0.95"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d32a725bc159af97c3e629873bb9f88fb8cf8a4867175f76dc987815ea07c83b"
+
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
@@ -154,6 +185,12 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
+[[package]]
+name = "constant_time_eq"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7144d30dcf0fafbce74250a3963025d8d52177934239851c917d29f1df280c2"
+
 [[package]]
 name = "csv"
 version = "1.3.0"
@@ -449,6 +486,7 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "base64",
+ "blake3",
  "clap",
  "colored",
  "csv",
diff --git a/Cargo.toml b/Cargo.toml
index b8c88ac..c0ed779 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,6 +10,7 @@ description = "a useful command line interface"
 [dependencies]
 anyhow = "1.0.82"
 base64 = "0.22.0"
+blake3 = "1.5.1"
 clap = { version = "4.5.4", features = ["derive"] }
 colored = "2.1.0"
 csv = "1.3.0"
diff --git a/examples/blake3.rs b/examples/blake3.rs
new file mode 100644
index 0000000..b7328fd
--- /dev/null
+++ b/examples/blake3.rs
@@ -0,0 +1,32 @@
+fn main() {
+    let hash1 = blake3::hash(b"foobarbaz");
+
+    let mut hasher = blake3::Hasher::new();
+    hasher.update(b"foo");
+    hasher.update(b"bar");
+    hasher.update(b"baz");
+    let hash2 = hasher.finalize();
+    assert_eq!(hash1, hash2);
+
+    let mut output = [0; 1000];
+    let mut output_reader = hasher.finalize_xof();
+    output_reader.fill(&mut output);
+    assert_eq!(hash1, output[..32]);
+
+    println!("{}", hash1);
+
+    let example_key = [42u8; 32];
+    let mac1 = blake3::keyed_hash(&example_key, b"foobarbaz");
+
+    let mut hasher = blake3::Hasher::new_keyed(&example_key);
+    hasher.update(b"foobarbaz");
+    let mac2 = hasher.finalize();
+    assert_eq!(mac1, mac2);
+    println!("{}", mac1);
+
+    const EMAIL_CONTEXT: &str = "BLAKE3 example 2020-01-07 17:10:44 email key";
+    const API_CONTEXT: &str = "BLAKE3 example 2020-01-07 17:11:21 API key";
+    let email_key = blake3::derive_key(EMAIL_CONTEXT, &example_key);
+    let api_key = blake3::derive_key(API_CONTEXT, &example_key);
+    assert_ne!(email_key, api_key);
+}