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(Java) Verify a CAdES-BES Signature and Examine Signature ContentsDemonstrates how to validate a .p7m (.p7s) signature and examine the contents of the signature.
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 requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. CkCrypt2 crypt = new CkCrypt2(); String outputFile = "qa_output/original.xml"; String inFile = "qa_data/p7m/fattura_signature.xml.p7m"; // Verify the signature and extract the contained file, which in this case is XML. boolean success = crypt.VerifyP7M(inFile,outputFile); if (success == false) { System.out.println(crypt.lastErrorText()); return; } System.out.println("Signature validated."); // Now let's examine the information about the signature. CkJsonObject json = crypt.LastJsonData(); if (crypt.get_LastMethodSuccess() == false) { // This should never be the case... System.out.println("No information available."); return; } json.put_EmitCompact(false); System.out.println(json.emit()); // Here's an example of the information about the signature: // { // "pkcs7": { // "verify": { // "certs": [ // { // "issuerCN": "Xyz EU Qualified Certificates CA G1", // "serial": "99A28A51AC389999" // } // ], // "useConstructedOctets": true, // "digestAlgorithms": [ // "sha256" // ], // "signerInfo": [ // { // "cert": { // "subjectKeyIdentifier": "5VM4x8AWnXf07yzbXuLtbb0U3yY=", // "digestAlgOid": "2.16.840.1.101.3.4.2.1", // "digestAlgName": "SHA256" // }, // "signingAlgOid": "1.2.840.113549.1.1.11", // "signingAlgName": "RSA-SHA256-PKCSV-1_5", // "authAttr": { // "1.2.840.113549.1.9.3": { // "name": "contentType", // "oid": "1.2.840.113549.1.7.1" // }, // "1.2.840.113549.1.9.5": { // "name": "signingTime", // "utctime": "190901152340Z" // }, // "1.2.840.113549.1.9.4": { // "name": "messageDigest", // "digest": "y+gd/zAQK33A//HInhaZba7w1fUJleV9AHbP1Ntx6U0=" // }, // "1.2.840.113549.1.9.16.2.47": { // "name": "signingCertificateV2", // "der": "MIH4MI..w4vv0=" // } // } // } // ] // } // } // } // Use this online tool to generate parsing code from sample JSON: // Generate Parsing Code from JSON CkDtObj authAttrSigningTimeUtctime = new CkDtObj(); String issuerCN; String serial; String strVal; String certSubjectKeyIdentifier; String certDigestAlgOid; String certDigestAlgName; String signingAlgOid; String signingAlgName; String authAttrContentTypeName; String authAttrContentTypeOid; String authAttrSigningTimeName; String authAttrMessageDigestName; String authAttrMessageDigestDigest; String authAttrSigningCertificateV2Name; String authAttrSigningCertificateV2Der; int i = 0; int count_i = json.SizeOfArray("pkcs7.verify.certs"); while (i < count_i) { json.put_I(i); issuerCN = json.stringOf("pkcs7.verify.certs[i].issuerCN"); serial = json.stringOf("pkcs7.verify.certs[i].serial"); i = i+1; } i = 0; count_i = json.SizeOfArray("pkcs7.verify.digestAlgorithms"); while (i < count_i) { json.put_I(i); strVal = json.stringOf("pkcs7.verify.digestAlgorithms[i]"); i = i+1; } i = 0; count_i = json.SizeOfArray("pkcs7.verify.signerInfo"); while (i < count_i) { json.put_I(i); certSubjectKeyIdentifier = json.stringOf("pkcs7.verify.signerInfo[i].cert.subjectKeyIdentifier"); certDigestAlgOid = json.stringOf("pkcs7.verify.signerInfo[i].cert.digestAlgOid"); certDigestAlgName = json.stringOf("pkcs7.verify.signerInfo[i].cert.digestAlgName"); signingAlgOid = json.stringOf("pkcs7.verify.signerInfo[i].signingAlgOid"); signingAlgName = json.stringOf("pkcs7.verify.signerInfo[i].signingAlgName"); authAttrContentTypeName = json.stringOf("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.3\".name"); authAttrContentTypeOid = json.stringOf("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.3\".oid"); authAttrSigningTimeName = json.stringOf("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.5\".name"); json.DtOf("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.5\".utctime",false,authAttrSigningTimeUtctime); authAttrMessageDigestName = json.stringOf("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.4\".name"); authAttrMessageDigestDigest = json.stringOf("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.4\".digest"); authAttrSigningCertificateV2Name = json.stringOf("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.16.2.47\".name"); authAttrSigningCertificateV2Der = json.stringOf("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.16.2.47\".der"); i = i+1; } } } |
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