Generate PublicKey from PrivateKey

sybrenstuvel · Jan 9, 2022 · 6defc80 · 6defc80
1 parent 5b377fb
commit 6defc80
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/rsa/key.py b/rsa/key.py
@@ -499,6 +499,18 @@ def blinded_encrypt(self, message: int) -> int:
         encrypted = rsa.core.encrypt_int(blinded, self.d, self.n)
         return self.unblind(encrypted, blindfac_inverse)
 
+    def public_key(self) -> PublicKey:
+        """Generates the corresponding PublicKey from the PrivateKey.
+
+        Equivalent to
+        >>> pubkey = PublicKey(privkey.n, privkey.e)
+
+        :returns: the public key that belongs to the private key
+        :rtype: PublicKey
+        """
+
+        return PublicKey(self.n, self.e)
+
     @classmethod
     def _load_pkcs1_der(cls, keyfile: bytes) -> "PrivateKey":
         """Loads a key in PKCS#1 DER format.