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(Visual FoxPro) Duplicate openssl dgst -md5 -sign myKey.pem something.txt | openssl enc -base64 -ADemonstrates how to duplicate the creation of an RSA signature produced by this OpenSSL command: openssl dgst -md5 -sign myKey.pem something.txt | openssl enc -base64 -A Note: This example requires Chilkat v11.0.0 or greater.
LOCAL lnSuccess LOCAL loPkey LOCAL loRsa LOCAL lcStrData LOCAL lcBase64Sig 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.LoadPemFile("myKey.pem") loRsa = CreateObject('Chilkat.Rsa') * Import the private key into the RSA component: lnSuccess = loRsa.UsePrivateKey(loPkey) IF (lnSuccess = 0) THEN ? loRsa.LastErrorText RELEASE loPkey RELEASE loRsa CANCEL ENDIF * OpenSSL uses BigEndian byte ordering: loRsa.LittleEndian = 0 * The resulting signature will be a Base64 string: loRsa.EncodingMode = "base64" * For simplicity, we're not loading * the data to be signed from a file. We are instead simply * using a literal string value. lcStrData = "This is the text to be signed." * Hash the input using MD5, and then sign the hash: * Other valid hash algorithm choices are "md2" and "sha-1". lcBase64Sig = loRsa.SignStringENC(lcStrData,"md5") ? lcBase64Sig ? "Success!" RELEASE loPkey RELEASE loRsa |
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