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Visual FoxPro Examples

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(Visual FoxPro) Write PKCS1 or PKCS8 Public Key PEM

Demonstrates how to write either PKCS1 or PKCS8 format PEM files. PKCS1 public keys have this PEM format:

-----BEGIN RSA PUBLIC KEY-----
BASE64 ENCODED DATA
-----END RSA PUBLIC KEY-----
PKCS8 public keys have this PEM format:
-----BEGIN PUBLIC KEY-----
BASE64 ENCODED DATA
-----END PUBLIC KEY-----

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

LOCAL loChilkatGlob
LOCAL lnSuccess
LOCAL loPem
LOCAL i
LOCAL lnNumPublicKeys

*  Unlock the Chilkat API.
*  Starting in v9.5.0.49, all Chilkat classes can be unlocked at once at the beginning of a program
*  by calling UnlockBundle.  It requires a Bundle unlock code.
loChilkatGlob = CreateObject('Chilkat_9_5_0.Global')
lnSuccess = loChilkatGlob.UnlockBundle("Anything for 30-day trial.")
IF (lnSuccess <> 1) THEN
    ? loChilkatGlob.LastErrorText
    RELEASE loChilkatGlob
    CANCEL
ENDIF

loPem = CreateObject('Chilkat_9_5_0.Pem')

*  Load a public key from a PEM file.
*  (Assume the PEM contains at least one public key..)
lnSuccess = loPem.LoadPemFile("/Users/chilkat/testData/pem/myPublicKey.pem")
IF (lnSuccess <> 1) THEN
    ? loPem.LastErrorText
    RELEASE loChilkatGlob
    RELEASE loPem
    CANCEL
ENDIF

lnNumPublicKeys = loPem.NumPublicKeys
IF (lnNumPublicKeys = 0) THEN
    ? ("Error: Expected the PEM to contain public keys.")
    RELEASE loChilkatGlob
    RELEASE loPem
    CANCEL
ENDIF

*  Get each public key as PEM, first in PKCS1 format, then in PKCS8.
FOR i = 1 TO lnNumPublicKeys

    *  First output to PKCS1 PEM format:
    ? "This is PKCS1 format:"
    loPem.PublicKeyFormat = "pkcs1"
    ? loPem.ToPem()

    *  Now PKCS8 PEM format:
    ? "This is PKCS8 format:"
    loPem.PublicKeyFormat = "pkcs8"
    ? loPem.ToPem()

NEXT

RELEASE loChilkatGlob
RELEASE loPem


 

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