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(Classic ASP) Sign a File to Create a .p7s (Detached Signature)Classic ASP example to create a detached signature file (.p7s) for any type file. The signature can be verified by calling VerifyP7S and passing the original filename and the .p7s filename.
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body> <% ' This example requires the Chilkat API to have been previously unlocked. ' See Global Unlock Sample for sample code. ' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Crypt2") set crypt = Server.CreateObject("Chilkat.Crypt2") ' Use a digital certificate and private key from a PFX file (.pfx or .p12). signingCertSubject = "Acme Inc" pfxFilename = "/Users/chilkat/testData/pfx/acme.pfx" pfxPassword = "test123" ' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.CertStore") set certStore = Server.CreateObject("Chilkat.CertStore") success = certStore.LoadPfxFile(pfxFilename,pfxPassword) If (success <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( certStore.LastErrorText) & "</pre>" Response.End End If ' cert is a Chilkat.Cert Set cert = certStore.FindCertBySubjectCN(signingCertSubject) If (certStore.LastMethodSuccess = 0) Then Response.Write "<pre>" & Server.HTMLEncode( "Failed to find certificate by subject common name.") & "</pre>" Response.End End If ' Tell the crypt component to use this cert. success = crypt.SetSigningCert(cert) ' We can sign any type of file, creating a .p7s as output: inFile = "/Users/chilkat/testData/pdf/sample.pdf" sigFile = "/Users/chilkat/testData/p7s/sample.p7s" success = crypt.CreateP7S(inFile,sigFile) If (success = 0) Then Response.Write "<pre>" & Server.HTMLEncode( crypt.LastErrorText) & "</pre>" Response.End End If success = crypt.VerifyP7S(inFile,sigFile) If (success = 0) Then Response.Write "<pre>" & Server.HTMLEncode( crypt.LastErrorText) & "</pre>" Response.End End If Response.Write "<pre>" & Server.HTMLEncode( "Success!") & "</pre>" %> </body> </html> |
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