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(Java) Duplicate CSR Created by OpenSSL with Config.cnfSee more CSR ExamplesDemonstrates how to duplicate a CSR created by the following commands: # Generate Private Key openssl ecparam -name secp256k1 -genkey -noout -out PrivateKey.pem #Generate CSR openssl req -new -sha256 -key PrivateKey.pem -extensions v3_req -config Config.cnf -out CSR.csr
import com.chilkatsoft.*; public class ChilkatExample { static { try { System.loadLibrary("chilkat"); } catch (UnsatisfiedLinkError e) { System.err.println("Native code library failed to load.\n" + e); System.exit(1); } } public static void main(String argv[]) { // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // This example duplicates the CSR created by OpenSSL with the following config file: // oid_section = OIDs // [ OIDs ] // certificateTemplateName= 1.3.6.1.4.1.311.20.2 // // [ req ] // default_bits = 2048 // emailAddress = it@example.sa // req_extensions = v3_req // x509_extensions = v3_ca // prompt = no // default_md = sha256 // req_extensions = req_ext // distinguished_name = dn // // [ v3_req ] // basicConstraints = CA:FALSE // keyUsage = digitalSignature, nonRepudiation, keyEncipherment // // [req_ext] // certificateTemplateName = ASN1:PRINTABLESTRING:ZATCA-Code-Signing // subjectAltName = dirName:alt_names // // [ dn ] // CN =EXAMPLE-CORP # Common Name // C=SA # Country Code e.g SA // OU=HEAD-OFFICE # Organization Unit Name // O=ASC # Organization Name // // [alt_names] // SN=1-ASC|2-V01|3-1234567890 # EGS Serial Number 1-ABC|2-PQR|3-XYZ // UID=312345678900003 # Organization Identifier (VAT Number) // title=1100 # Invoice Type // registeredAddress=Dammam # Address // businessCategory=IT # Business Category // The OpenSSL commands we are duplicating: // openssl ecparam -name secp256k1 -genkey -noout -out PrivateKey.pem // openssl req -new -sha256 -key PrivateKey.pem -extensions v3_req -config Config.cnf -out CSR.csr // The 1st step is to actually use OpenSSL to generate a sample CSR.csr that we wish to duplicate. // With the sample CSR.csr, we get the ExtensionRequest as XML. // For example: CkStringBuilder sbCsr = new CkStringBuilder(); boolean success = sbCsr.LoadFile("qa_data/csr/openssl_cnf/CSR.csr","utf-8"); if (success == false) { System.out.println("Failed to load CSR.csr"); return; } CkCsr csr0 = new CkCsr(); success = csr0.LoadCsrPem(sbCsr.getAsString()); if (success == false) { System.out.println(csr0.lastErrorText()); return; } CkXml xml0 = new CkXml(); success = csr0.GetExtensionRequest(xml0); if (success == false) { System.out.println(csr0.lastErrorText()); return; } // Let's examine the extension request.. System.out.println(xml0.getXml()); // <?xml version="1.0" encoding="utf-8"?> // <set> // <sequence> // <sequence> // <oid>1.3.6.1.4.1.311.20.2</oid> // <asnOctets> // <printable>ZATCA-Code-Signing</printable> // </asnOctets> // </sequence> // <sequence> // <oid>2.5.29.17</oid> // <asnOctets> // <sequence> // <contextSpecific tag="4" constructed="1"> // <sequence> // <set> // <sequence> // <oid>2.5.4.4</oid> // <utf8>1-ASC|2-V01|3-1234567890</utf8> // </sequence> // </set> // <set> // <sequence> // <oid>0.9.2342.19200300.100.1.1</oid> // <utf8>312345678900003</utf8> // </sequence> // </set> // <set> // <sequence> // <oid>2.5.4.12</oid> // <utf8>1100</utf8> // </sequence> // </set> // <set> // <sequence> // <oid>2.5.4.26</oid> // <utf8>Dammam</utf8> // </sequence> // </set> // <set> // <sequence> // <oid>2.5.4.15</oid> // <utf8>IT</utf8> // </sequence> // </set> // </sequence> // </contextSpecific> // </sequence> // </asnOctets> // </sequence> // </sequence> // </set> // If you wish to generate the above XML without going through the above steps, copy the XML into // the online tool at https://tools.chilkat.io/xmlCreate // Here is the generated code for the above XML: CkXml xml = new CkXml(); xml.put_Tag("set"); xml.UpdateChildContent("sequence|sequence|oid","1.3.6.1.4.1.311.20.2"); xml.UpdateChildContent("sequence|sequence|asnOctets|printable","ZATCA-Code-Signing"); xml.UpdateChildContent("sequence|sequence[1]|oid","2.5.29.17"); xml.UpdateAttrAt("sequence|sequence[1]|asnOctets|sequence|contextSpecific",true,"tag","4"); xml.UpdateAttrAt("sequence|sequence[1]|asnOctets|sequence|contextSpecific",true,"constructed","1"); xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set|sequence|oid","2.5.4.4"); xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set|sequence|utf8","1-ASC|2-V01|3-1234567890"); xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[1]|sequence|oid","0.9.2342.19200300.100.1.1"); xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[1]|sequence|utf8","312345678900003"); xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[2]|sequence|oid","2.5.4.12"); xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[2]|sequence|utf8","1100"); xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[3]|sequence|oid","2.5.4.26"); xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[3]|sequence|utf8","Dammam"); xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[4]|sequence|oid","2.5.4.15"); xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[4]|sequence|utf8","IT"); // We'll need a new secp256k1 private key, so let's generate it. CkEcc ecdsa = new CkEcc(); CkPrng prng = new CkPrng(); CkPrivateKey privKey = ecdsa.GenEccKey("secp256k1",prng); if (ecdsa.get_LastMethodSuccess() == false) { System.out.println(ecdsa.lastErrorText()); return; } System.out.println("Generated secp256k1 private key."); // Use a new CSR object to generate a CSR with the private key and extension request. CkCsr csr = new CkCsr(); // Add the [dn] fields // [ dn ] // CN =EXAMPLE-CORP # Common Name // C=SA # Country Code e.g SA // OU=HEAD-OFFICE # Organization Unit Name // O=ASC # Organization Name csr.put_CommonName("EXAMPLE-CORP"); csr.put_Country("SA"); csr.put_CompanyDivision("HEAD-OFFICE"); csr.put_Company("ASC"); // Add the extension request to the CSR csr.SetExtensionRequest(xml); // Generate the CSR with the extension request String csrPem = csr.genCsrPem(privKey); if (csr.get_LastMethodSuccess() == false) { System.out.println(csr.lastErrorText()); return; } System.out.println(csrPem); // Sample output: // -----BEGIN CERTIFICATE REQUEST----- // MIIBuDCCAV8CAQAwSDEVMBMGA1UEAwwMRVhBTVBMRS1DT1JQMQswCQYDVQQGEwJT // QTEUMBIGA1UECwwLSEVBRC1PRkZJQ0UxDDAKBgNVBAoMA0FTQzBWMBAGByqGSM49 // AgEGBSuBBAAKA0IABFI5rusr76HiJcMMr1r4L0B0BOAs6azLkt/RwHoT6A0xFRRt // tulWT40tNhx3qJ4I5ePNgMceOEtuK1kMGVTovI6ggbcwgbQGCSqGSIb3DQEJDjGB // pjCBozAhBgkrBgEEAYI3FAIEFBMSWkFUQ0EtQ29kZS1TaWduaW5nMH4GA1UdEQR3 // MHWkczBxMSEwHwYDVQQEDBgxLUFTQ3wyLVYwMXwzLTEyMzQ1Njc4OTAxHzAdBgoJ // kiaJk/IsZAEBDA8zMTIzNDU2Nzg5MDAwMDMxDTALBgNVBAwMBDExMDAxDzANBgNV // BBoMBkRhbW1hbTELMAkGA1UEDwwCSVQwCgYIKoZIzj0EAwIDRwAwRAIgJnbgpSGb // diB+0M1VTqc1GU9sFsfnOvVN/8WhWRRxQIwCIF5eH9vgMgXyoU284X8Bx3dqOJ4q // xashGWci87POxSvT // -----END CERTIFICATE REQUEST----- } } |
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