diff --git a/README.md b/README.md
index b1cc7c2..7ed395e 100644
--- a/README.md
+++ b/README.md
@@ -44,6 +44,16 @@ Encrypt config `~/.tinyencrypt/config-rs.json`:
 }
 ```
 
+Supported PKI encryption types:
+
+| Type       | Description            |
+|------------|------------------------|
+| pgp        | OpenPGP RSA PKCS1-v1.5 |
+| pgp-x25519 | ECDH X25519            |
+| ecdh       | ECDH P256              |
+| ecdh-p384  | ECDH P384              |
+
+
 Smart Card(Yubikey) protected ECDH Encryption description:
 
 ```text