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(Visual FoxPro) RSA Sign with PKCS8 Encrypted KeySee more RSA ExamplesDemonstrates how to load a private key from an encrypted PKCS8 file and create an RSA digital signature.Note: This example requires Chilkat v11.0.0 or greater.
LOCAL lnSuccess LOCAL loPkey LOCAL loRsa LOCAL lcStrData LOCAL lcHexSig lnSuccess = 0 * This example assumes the Chilkat API to have been previously unlocked. * See Global Unlock Sample for sample code. loPkey = CreateObject('Chilkat.PrivateKey') * Load the private key from an RSA PEM file: lnSuccess = loPkey.LoadPkcs8EncryptedFile("privateKey.key","myPassword") loRsa = CreateObject('Chilkat.Rsa') * Import the private key into the RSA object: lnSuccess = loRsa.UsePrivateKey(loPkey) IF (lnSuccess = 0) THEN ? loRsa.LastErrorText RELEASE loPkey RELEASE loRsa CANCEL ENDIF * Return the signature in hex loRsa.EncodingMode = "hex" lcStrData = "This is the string to be signed." * Sign the string using the sha-1 hash algorithm. * Other valid choices are "md2", "sha256", "sha384", "sha512", and "md5". lcHexSig = loRsa.SignStringENC(lcStrData,"sha-1") ? lcHexSig RELEASE loPkey RELEASE loRsa |
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