(Lianja) RSA Sign Using Private Key from .pfx/.p12 to Base64 Signature

See more RSA Examples

Demonstrates how to RSA sign something using a private key loaded from a .pfx/.p12. The RSA signature is returned in Base64 encoded format.

Chilkat Lianja Extension Download Chilkat Lianja Extension

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

loRsa = createobject("CkRsa")

// Load the .pfx/.p12
loPfx = createobject("CkPfx")
llSuccess = loPfx.LoadPfxFile("qa_data/pfx/myKey.p12","myPassword")
if (llSuccess <> .T.) then
    ? loPfx.LastErrorText
    release loRsa
    release loPfx
    return
endif

// Get the default private key.
loPrivKey = loPfx.GetPrivateKey(0)
if (loPfx.LastMethodSuccess <> .T.) then
    ? loPfx.LastErrorText
    release loRsa
    release loPfx
    return
endif

// Import the private key into the RSA component:
llSuccess = loRsa.ImportPrivateKeyObj(loPrivKey)
if (llSuccess <> .T.) then
    ? loRsa.LastErrorText
    release loPrivKey
    release loRsa
    release loPfx
    return
endif

release loPrivKey

// Get the signature in base64
loRsa.EncodingMode = "base64"

lcStrData = "This is the string to be signed."

// Sign the string using the sha256 hash algorithm.
// Other valid choices are "sha384", "sha512", "sha-1", "md2" and "md5".
lcBase64Sig = loRsa.SignStringENC(lcStrData,"sha256")

? lcBase64Sig

? "Success!"


release loRsa
release loPfx