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(Excel) Duplicate OpensSSL to Create Signature using Cert and Key FilesThis example duplicates the following: openssl smime –sign -in something.xml -out something.der -signer mycert.crt -inkey cert.key -outform der –nodetach 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 cert and private key from separate files. Dim cert As Chilkat.Cert Set cert = Chilkat.NewCert success = cert.LoadFromFile("myCert.crt") If (success <> True) Then Debug.Print cert.LastErrorText Exit Sub End If Dim bd As Chilkat.BinData Set bd = Chilkat.NewBinData success = bd.LoadFile("cert.key") Dim privkey As Chilkat.PrivateKey Set privkey = Chilkat.NewPrivateKey ' Load from any format private key. ' If the file does not need a password, the 2nd arg is ignored. success = privkey.LoadAnyFormat(bd,"password_if_needed") If (success <> True) Then Debug.Print privkey.LastErrorText Exit Sub End If success = crypt.SetSigningCert2(cert,privkey) 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.der") If (success <> True) Then Debug.Print crypt.LastErrorText Exit Sub End If Debug.Print "Success." |
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