(Visual FoxPro) RSA Sign utf-8 Byte Representation of String

Demontstrates how to sign the utf-8 byte representation of a string.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

LOCAL loPrivKey
LOCAL lnSuccess
LOCAL loRsa
LOCAL lcOriginalData
LOCAL lcSigBase64

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

* Load an RSA private key for signing.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.PrivateKey')
loPrivKey = CreateObject('Chilkat.PrivateKey')
lnSuccess = loPrivKey.LoadEncryptedPemFile("qa_data/pem/rsa_passwd.pem","passwd")
IF (lnSuccess <> 1) THEN
    ? loPrivKey.LastErrorText
    RELEASE loPrivKey
    CANCEL
ENDIF

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Rsa')
loRsa = CreateObject('Chilkat.Rsa')
loRsa.ImportPrivateKeyObj(loPrivKey)

lcOriginalData = "This is the string to be hashed an RSA signed."

* Indicate that we want the utf-8 byte representation of the string to be signed
loRsa.Charset = "utf-8"

* We want the RSA signature in base64 format
loRsa.EncodingMode = "base64"

lcSigBase64 = loRsa.SignStringENC(lcOriginalData,"sha256")
? lcSigBase64

RELEASE loPrivKey
RELEASE loRsa