Remove the password parameter for ECPrivateKey::ExportEncryptedPrivateKey.

crypto/ec_private_key.h

Index: crypto/ec_private_key.h
diff --git a/crypto/ec_private_key.h b/crypto/ec_private_key.h
index 8e5fe5e99bb89ecc4cb4120244f1f8ec37b3caaa..432019be5d7eb9610febd69e76df5beb4aac452f 100644
--- a/crypto/ec_private_key.h
+++ b/crypto/ec_private_key.h
@@ -41,13 +41,12 @@ class CRYPTO_EXPORT ECPrivateKey {
 
   // Creates a new instance by importing an existing key pair.
   // The key pair is given as an ASN.1-encoded PKCS #8 EncryptedPrivateKeyInfo
-  // block and an X.509 SubjectPublicKeyInfo block.
+  // block with empty password and an X.509 SubjectPublicKeyInfo block.
   // Returns nullptr if initialization fails.
   //
   // This function is deprecated. Use CreateFromPrivateKeyInfo for new code.
   // See https://crbug.com/603319.
   static std::unique_ptr<ECPrivateKey> CreateFromEncryptedPrivateKeyInfo(
-      const std::string& password,
       const std::vector<uint8_t>& encrypted_private_key_info,
       const std::vector<uint8_t>& subject_public_key_info);
 
@@ -60,16 +59,12 @@ class CRYPTO_EXPORT ECPrivateKey {
   bool ExportPrivateKey(std::vector<uint8_t>* output) const;
 
   // Exports the private key as an ASN.1-encoded PKCS #8 EncryptedPrivateKeyInfo
-  // block and the public key as an X.509 SubjectPublicKeyInfo block.
-  // The |password| and |iterations| are used as inputs to the key derivation
-  // function for generating the encryption key.  PKCS #5 recommends a minimum
-  // of 1000 iterations, on modern systems a larger value may be preferrable.
+  // block wth empty password. This was historically used as a workaround for
+  // NSS API deficiencies and does not provide security.
   //
   // This function is deprecated. Use ExportPrivateKey for new code. See
   // https://crbug.com/603319.
-  bool ExportEncryptedPrivateKey(const std::string& password,
-                                 int iterations,
-                                 std::vector<uint8_t>* output) const;
+  bool ExportEncryptedPrivateKey(std::vector<uint8_t>* output) const;
 
   // Exports the public key to an X.509 SubjectPublicKeyInfo block.
   bool ExportPublicKey(std::vector<uint8_t>* output) const;