Resend private key for encryption?

Am I able to have my private key resent to me for a specific form? 

Decryption keys are not stored due to security reasons, once the key is downloaded it should be stored as you're able to create only a new key through the wizard. 

Note that if you generate a new key, this will only work for new submissions, the existing ones will remain encrypted. 

If you have lost the key, we do recommend to turn off the encryption feature and turn if on when you find the key, this way you avoid to keep receiving encrypted data that cannot be decrypted.