diff --git a/doc/api/crypto.md b/doc/api/crypto.md
index 68a905ae1d8fab..d4af17c9988ff8 100644
--- a/doc/api/crypto.md
+++ b/doc/api/crypto.md
@@ -1637,7 +1637,7 @@ treated as the key with no passphrase and will use `RSA_PKCS1_PADDING`.
 <!-- YAML
 added: v1.1.0
 -->
-- `private_key` {Object | string}
+- `public_key` {Object | string}
   - `key` {string} A PEM encoded private key.
   - `passphrase` {string} An optional passphrase for the private key.
   - `padding` {crypto.constants} An optional padding value defined in
@@ -1657,7 +1657,7 @@ be passed instead of a public key.
 <!-- YAML
 added: v0.11.14
 -->
-- `private_key` {Object | string}
+- `public_key` {Object | string}
   - `key` {string} A PEM encoded private key.
   - `passphrase` {string} An optional passphrase for the private key.
   - `padding` {crypto.constants} An optional padding value defined in
@@ -1665,7 +1665,8 @@ added: v0.11.14
     `RSA_PKCS1_PADDING`, or `crypto.constants.RSA_PKCS1_OAEP_PADDING`.
 - `buffer` {Buffer | TypedArray | DataView}
 
-Encrypts `buffer` with `public_key`.
+Encrypts the content of `buffer` with `public_key` and returns a new
+[`Buffer`][] with encrypted content.
 
 `public_key` can be an object or a string. If `public_key` is a string, it is
 treated as the key with no passphrase and will use `RSA_PKCS1_OAEP_PADDING`.