diff --git a/src/key/key.js b/src/key/key.js
index 63412f5e..3b404c66 100644
--- a/src/key/key.js
+++ b/src/key/key.js
@@ -416,6 +416,20 @@ Key.prototype.validate = async function() {
   return signature.verify(signingKeyPacket, signatureType, data);
 };
 
+/**
+ * Clear private key parameters
+ */
+Key.prototype.clearPrivateParams = function () {
+  if (!this.isPrivate()) {
+    throw new Error("Can't clear private parameters of a public key");
+  }
+  this.getKeys().forEach(({ keyPacket }) => {
+    if (keyPacket.isDecrypted()) {
+      keyPacket.clearPrivateParams();
+    }
+  });
+};
+
 /**
  * Checks if a signature on a key is revoked
  * @param  {module:packet.SecretKey|
diff --git a/test/general/key.js b/test/general/key.js
index 30bbee2b..f1c97332 100644
--- a/test/general/key.js
+++ b/test/general/key.js
@@ -2598,6 +2598,39 @@ describe('Key', function() {
     expect(await key.validate()).to.be.false;
   });
 
+  it('clearPrivateParams() - check that private key can no longer be used', async function() {
+    const { keys: [key] } = await openpgp.key.readArmored(priv_key_rsa);
+    await key.decrypt('hello world');
+    await key.clearPrivateParams();
+    await expect(key.validate()).to.be.rejectedWith('Key is not decrypted');
+  });
+
+  it('clearPrivateParams() - check that private key parameters were removed', async function() {
+    const { keys: [key] } = await openpgp.key.readArmored(priv_key_rsa);
+    await key.decrypt('hello world');
+    const params = key.primaryKey.params;
+    await key.clearPrivateParams();
+    key.primaryKey.isEncrypted = false;
+    key.primaryKey.params = params;
+    await expect(key.validate()).to.be.rejectedWith('Missing private key parameters');
+  });
+
+  it.only('clearPrivateParams() - check that private key parameters were zeroed out', async function() {
+    const { keys: [key] } = await openpgp.key.readArmored(priv_key_rsa);
+    await key.decrypt('hello world');
+    const params = key.primaryKey.params.slice();
+    await key.clearPrivateParams();
+    key.primaryKey.isEncrypted = false;
+    key.primaryKey.params = params;
+    const use_nativeVal = openpgp.config.use_native;
+    openpgp.config.use_native = false;
+    try {
+      expect(await key.validate()).to.be.false;
+    } finally {
+      openpgp.config.use_native = use_nativeVal;
+    }
+  });
+
   it('update() - throw error if fingerprints not equal', async function() {
     const keys = (await openpgp.key.readArmored(twoKeys)).keys;
     await expect(keys[0].update.bind(