PureBasic

Load an Encrypted Private Key from a PEM File

Demonstrates the Chilkat PrivateKey.LoadEncryptedPemFile method, which loads a private key from a file, using a password when the key is encrypted. The first argument is the file path and the second is the password.

Note: The file path is relative to the application's current working directory. Absolute paths may also be used. Supply the path to your own key file.

Background: The file-based encrypted loader — the natural choice for a .pem key stored with a passphrase, as most deployment keys are. It decrypts encrypted PKCS #8 PEM and also accepts unencrypted files, so it works whether or not the specific file is protected. Supply the passphrase from a secure source.

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IncludeFile "CkPrivateKey.pb"

Procedure ChilkatExample()

    success.i = 0

    ;  Demonstrates the PrivateKey.LoadEncryptedPemFile method, which loads a private key from a file,
    ;  using a password when the key is encrypted.  The 1st argument is the file path and the 2nd is
    ;  the password.

    privKey.i = CkPrivateKey::ckCreate()
    If privKey.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ;  The key password is not hard-coded in a real application; obtain it from an interactive
    ;  prompt, environment variable, or a secrets vault.
    password.s = "myKeyPassword"

    success = CkPrivateKey::ckLoadEncryptedPemFile(privKey,"qa_data/private_encrypted.pem",password)
    If success = 0
        Debug CkPrivateKey::ckLastErrorText(privKey)
        CkPrivateKey::ckDispose(privKey)
        ProcedureReturn
    EndIf

    Debug "Loaded a " + CkPrivateKey::ckKeyType(privKey) + " private key."


    CkPrivateKey::ckDispose(privKey)


    ProcedureReturn
EndProcedure