Chilkat Examples

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Visual FoxPro Examples

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(Visual FoxPro) Base64url Encoding

Base64url encoding is identical to base64 encoding except it uses non-reserved URL characters (e.g. '–' is used instead of '+', and '_' is used instead of '/') and it omits the padding characters. Chilkat adds support for "base64url" in version 9.5.0.56. (To be released Q1 2016.) The list of binary encodings supported by Chilkat are documented at Chilkat Binary Encodings For any supported encoding, such as base64, hex, url, quoted-printable, modbase64, base64url, etc., the encoding name may be used in any "EncodingMode" property or in any method argument that specifies a binary encoding. (Please note that a "binary encoding" is different than a "character encoding". Character encodings supported by Chilkat are listed at Chilkat Character Encodings.) This example demonstrates using base64url encoding by setting the RSA object's EncodingMode property equal to "base64url".

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

LOCAL loCertStore
LOCAL lnSuccess
LOCAL loCert
LOCAL loPkey
LOCAL lcPkeyXml
LOCAL loRsa
LOCAL lcStrData
LOCAL lcStrSig

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

* Create an instance of a certificate store object, load a PFX file,
* locate the certificate we need, and use it for signing.
* (a PFX file may contain more than one certificate.)
loCertStore = CreateObject('Chilkat_9_5_0.CertStore')

* The 1st argument is the filename, the 2nd arg is the 
* PFX file's password:
lnSuccess = loCertStore.LoadPfxFile("chilkat.pfx","test")
IF (lnSuccess <> 1) THEN
    ? loCertStore.LastErrorText
    RELEASE loCertStore
    CANCEL
ENDIF

loCert = loCertStore.FindCertBySubject("Chilkat Software, Inc.")
IF (loCertStore.LastMethodSuccess = 0) THEN
    ? loCertStore.LastErrorText
    RELEASE loCertStore
    CANCEL
ENDIF

loPkey = loCert.ExportPrivateKey()
IF (loCert.LastMethodSuccess = 0) THEN
    ? loCert.LastErrorText
    RELEASE loCert
    RELEASE loCertStore
    CANCEL
ENDIF

RELEASE loCert

* Get the private key in XML format:
lcPkeyXml = loPkey.GetXml()

loRsa = CreateObject('Chilkat_9_5_0.Rsa')

* Import the private key into the RSA component:
lnSuccess = loRsa.ImportPrivateKey(lcPkeyXml)
IF (lnSuccess <> 1) THEN
    ? loRsa.LastErrorText
    RELEASE loPkey
    RELEASE loCertStore
    RELEASE loRsa
    CANCEL
ENDIF

* This example will sign a string, and receive the signature
* as a base64url encoded string.  Therefore, set the encoding mode
* to "base64url":
loRsa.EncodingMode = "base64url"
loRsa.LittleEndian = 0

lcStrData = "This is the string to be signed."
lcStrSig = loRsa.SignStringENC(lcStrData,"sha256")

RELEASE loPkey

? lcStrSig

RELEASE loCertStore
RELEASE loRsa


 

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