Decrypt File and Save Decrypted Output to a String

Make sure pfEncryptor is started and you are on the main form.

See Decryption Definition Form for a description of the various fields on the form.

WARNING: Do not output the contents of a very large file to a decrypted string. This can cause Out of Memory errors that will cause pfEncryptor to fail.

In the Decrypt portion of the main form:

  • Click Decrypt File to identify this as a file decryption.
  • Select the type of encryption that was used to encrypt the data: AES or TDES or DES.
  • Specify the Key and IV to use for this decryption.
    • If you have a file containing the key and IV combination that was used to encrypt the data::
      • Click Load Key/IV From File button.
      • Select the folder and file containing the key that was used and press the Open button.
    • If you know the key that was used to encrypt the data, you can type the key and IV directly to the Key and IV fields on the Decryption Definition Form.
    • If the Key and IV are already displayed on Encryption Definition Form, you can click the Copy Key/IV From Above button to copy the information to the decryption form.
  • (Optional) If you want to save a copy of the Key/IV values::
    • Click the Save Key/IV To File button.
    • Specify the folder and file name using the Save File Dialog that shows.
    • Click the Save button.
  • Specify the file to be decrypted.
    • Click the Source Button to show a File Open Dialog.
  • Select Save Decrypted Output to String option button to save output to a string.
  • Leave the Decrypted Output text box empty.
    • The decrypted text resulting from the Decrypt operation will be placed in this field..
  • Click the Decrypt Button.
  • The decrypted output will be displayed in the Decrypted Output field.
    • (Optional) You can use the Output Button to show the decrypted data in a larger popup text box.
  • (Optional) Click the Save button to save the Decryption Definition to a file.
    • To use this saved Decryption Definition at some later time, use the Load button to open and load the saved definition to the Encrypt form.
    • See Open Saved Decryption Definition for information rerunning a previously defined encryption.
  • (Optional) Click the New button to clear the Decryption Definition Form and start a new definition.