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(Go) 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*... Note: This example requires Chilkat v11.0.0 or greater.
success := false // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. crypt := Crypt2_Ref.html">chilkat.NewCrypt2() // Load the PEM containing cert + private key. pem := Pem_Ref.html">chilkat.NewPem() success = pem.LoadPemFile("qa_data/pem/myPem.pem","password") if success == false { fmt.Println(pem.LastErrorText()) crypt.DisposeCrypt2() pem.DisposePem() return } privkey := PrivateKey_Ref.html">chilkat.NewPrivateKey() success = pem.PrivateKeyAt(0,privkey) if success == false { fmt.Println(pem.LastErrorText()) crypt.DisposeCrypt2() pem.DisposePem() privkey.DisposePrivateKey() return } cert := Cert_Ref.html">chilkat.NewCert() success = pem.CertAt(0,cert) if success == false { fmt.Println(pem.LastErrorText()) crypt.DisposeCrypt2() pem.DisposePem() privkey.DisposePrivateKey() cert.DisposeCert() return } success = crypt.SetSigningCert2(cert,privkey) if success == false { fmt.Println(crypt.LastErrorText()) crypt.DisposeCrypt2() pem.DisposePem() privkey.DisposePrivateKey() cert.DisposeCert() return } // Alternatively, we could use a .pfx/.p12 file. // (Chilkat also supports other formats/sources for cert/private keys...) certFromP12 := Cert_Ref.html">chilkat.NewCert() success = certFromP12.LoadPfxFile("qa_data/p12/myP12.p12","password") if success == false { fmt.Println(certFromP12.LastErrorText()) crypt.DisposeCrypt2() pem.DisposePem() privkey.DisposePrivateKey() cert.DisposeCert() certFromP12.DisposeCert() return } // 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 == false { fmt.Println(crypt.LastErrorText()) crypt.DisposeCrypt2() pem.DisposePem() privkey.DisposePrivateKey() cert.DisposeCert() certFromP12.DisposeCert() return } // 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 == false { fmt.Println(crypt.LastErrorText()) crypt.DisposeCrypt2() pem.DisposePem() privkey.DisposePrivateKey() cert.DisposeCert() certFromP12.DisposeCert() return } fmt.Println("Success.") crypt.DisposeCrypt2() pem.DisposePem() privkey.DisposePrivateKey() cert.DisposeCert() certFromP12.DisposeCert() |
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