Xbase++

Load a Private Key from BinData (Any Format)

Demonstrates the Chilkat PrivateKey.LoadAnyFormat method, which loads a private key by inspecting the bytes in a BinData. The first argument is the BinData and the second is the password (used if the detected key is encrypted).

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: When you have key bytes in memory but do not know their exact format — downloaded, decrypted, or pulled from a database — this figures it out for you, recognizing PKCS #1/#8 DER, encrypted PKCS #8, PEM, JWK, Chilkat XML, Microsoft formats, and more. It removes the guesswork of choosing a specific loader, at the small cost of the detection step. Supply the password so it can decrypt an encrypted key without a second call.

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LOCAL nSuccess
LOCAL oBd
LOCAL oPrivKey
LOCAL cPassword

nSuccess := 0

//  Demonstrates the PrivateKey.LoadAnyFormat method, which loads a private key by inspecting the
//  bytes in a BinData.  The 1st argument is the BinData and the 2nd is the password (used if the
//  detected key is encrypted).

oBd := CreateObject("Chilkat.BinData")
nSuccess := oBd:LoadFile("qa_data/some_private_key")
IF (nSuccess == 0)
    ? oBd:LastErrorText
    oBd:destroy()
    RETURN
ENDIF

oPrivKey := CreateObject("Chilkat.PrivateKey")

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

//  Chilkat auto-detects the representation: PKCS #1/#8 DER, encrypted PKCS #8, PEM, JWK,
//  Chilkat XML, Microsoft formats, and more.
nSuccess := oPrivKey:LoadAnyFormat(oBd, cPassword)
IF (nSuccess == 0)
    ? oPrivKey:LastErrorText
    oBd:destroy()
    oPrivKey:destroy()
    RETURN
ENDIF

? "Loaded a " + oPrivKey:KeyType + " private key."

oBd:destroy()
oPrivKey:destroy()