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(Excel) Duplicate OpensSSL to Sign File and Output Binary DERThis example duplicates the following: openssl smime -sign -in INPUT.xml -signer SIGN.PEM -passin pass:MYPASS -outform der -binary -nodetach -out SIGNED.P7M Note: Although "smime" is the OpenSSL command, it's not actually producing S/MIME. The arguments "-outform der -binary" indicates that the output is binary DER (i.e. the PKCS7 binary signature). The input can be any type of file: XML, PDF, JPG, ... *anything*...
' This example requires the Chilkat API to have been previously unlocked. ' See Global Unlock Sample for sample code. Dim crypt As Chilkat.Crypt2 Set crypt = Chilkat.NewCrypt2 ' Load the PEM containing cert + private key. Dim pem As Chilkat.Pem Set pem = Chilkat.NewPem success = pem.LoadPemFile("qa_data/pem/myPem.pem","password") If (success <> True) Then Debug.Print pem.LastErrorText Exit Sub End If Set privkey = pem.GetPrivateKey(0) If (pem.LastMethodSuccess <> True) Then Debug.Print pem.LastErrorText Exit Sub End If Set cert = pem.GetCert(0) If (pem.LastMethodSuccess <> True) Then Debug.Print pem.LastErrorText Exit Sub End If success = crypt.SetSigningCert2(cert,privkey) If (success <> True) Then Debug.Print crypt.LastErrorText Exit Sub End If ' Alternatively, we could use a .pfx/.p12 file. ' (Chilkat also supports other formats/sources for cert/private keys...) Dim certFromP12 As Chilkat.Cert Set certFromP12 = Chilkat.NewCert success = certFromP12.LoadPfxFile("qa_data/p12/myP12.p12","password") If (success <> True) Then Debug.Print certFromP12.LastErrorText Exit Sub End If ' The certificate, when loaded from a .pfx/.p12, will automatically ' include the associated private key, assuming it's present in the .p12. ' We don't have to explicitly provide the private key as in the ' lines of code above that use the PEM file. success = crypt.SetSigningCert(certFromP12) If (success <> True) Then Debug.Print crypt.LastErrorText Exit Sub End If ' Create the opaque signature (PKCS7 binary DER that contains both the signature and original file data). success = crypt.CreateP7M("qa_data/infile.anything","qa_output/outfile.p7m") If (success <> True) Then Debug.Print crypt.LastErrorText Exit Sub End If Debug.Print "Success." |
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