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(Xojo Plugin) Verify Authenticode Signature of EXE or DLLSee more Code Signing ExamplesDemonstrates how to verify an Authenticode signed EXE or DLL. Note: Chilkat's code signing class was added in v9.5.0.97
// This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // You can verify a signed DLL or EXE. Dim path As String path = "c:/someDir/something.dll" // The verify method returns an overall indicator of whether // the EXE or DLL can be trusted or not. // The details of the signature are emitted to the JSON object // passed in the last argument. Dim json As New Chilkat.JsonObject json.EmitCompact = False Dim validator As New Chilkat.CodeSign Dim valid As Boolean valid = validator.VerifySignature(path,json) If (valid = False) Then // Validation failed. System.DebugLog(validator.LastErrorText) // You can also examine the details of the validation (see below) System.DebugLog(json.Emit()) Return End If // Examine the details of the Authenticode signature // println json.Emit(); // An example of the JSON details of an authenticode signature, with selected parsing code, is shown below. // // Use this online tool to generate parsing code from sample JSON: // Generate Parsing Code from JSON // { // "pkcs7": { // "verify": { // "peFile": { // "hashOid": "2.16.840.1.101.3.4.2.1", // "hash": "q9tzWEcea8f8kaMXG8LpWNPe9JIW7aKccYWuL3mrCBw=" // }, // "certs": [ // { // "issuerCN": "AAA Certificate Services", // "serial": "48FC93B46055948D36A7C98A89D69416" // }, // { // "issuerCN": "Sectigo Public Code Signing Root R46", // "serial": "621D6D0C52019E3B9079152089211C0A" // }, // { // "issuerCN": "Sectigo Public Code Signing CA R36", // "serial": "3FF5B69109BFD4046C92CC0D18EE23C2" // } // ], // "digestAlgorithms": [ // "sha256" // ], // "signerInfo": [ // { // "cert": { // "serialNumber": "3FF5B69109BFD4046C92CC0D18EE23C2", // "issuerCN": "Sectigo Public Code Signing CA R36", // "digestAlgOid": "2.16.840.1.101.3.4.2.1", // "digestAlgName": "SHA256" // }, // "contentType": "1.3.6.1.4.1.311.2.1.4", // "messageDigest": "4MkPVkY4qdwoVAj5JcCvn3ISSS5yqtf1+KmIs/Ckni4=", // "signingAlgOid": "1.2.840.113549.1.1.1", // "signingAlgName": "RSA-PKCSV-1_5", // "authAttr": { // "1.3.6.1.4.1.311.2.1.12": { // "der": "MAA=" // }, // "1.2.840.113549.1.9.3": { // "name": "contentType", // "oid": "1.3.6.1.4.1.311.2.1.4" // }, // "1.3.6.1.4.1.311.2.1.11": { // "der": "MAwGCisGAQQBgjcCARU=" // }, // "1.2.840.113549.1.9.4": { // "name": "messageDigest", // "digest": "4MkPVkY4qdwoVAj5JcCvn3ISSS5yqtf1+KmIs/Ckni4=" // } // }, // "unauthAttr": { // "1.3.6.1.4.1.311.3.3.1": { // "name": "timestampToken", // "der": "MIIXJwY ... QZej", // "verify": { // "digestAlgorithms": [ // "sha256" // ], // "signerInfo": [ // { // "cert": { // "serialNumber": "0544AFF3949D0839A6BFDB3F5FE56116", // "issuerCN": "DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA", // "digestAlgOid": "2.16.840.1.101.3.4.2.1", // "digestAlgName": "SHA256" // }, // "contentType": "1.2.840.113549.1.9.16.1.4", // "signingTime": "240117124047Z", // "messageDigest": "y6cKjJoRfgJwW+Dj29w3tEfWqVybz7Sg+d8opKQxCjM=", // "signingAlgOid": "1.2.840.113549.1.1.1", // "signingAlgName": "RSA-PKCSV-1_5", // "authAttr": { // "1.2.840.113549.1.9.3": { // "name": "contentType", // "oid": "1.2.840.113549.1.9.16.1.4" // }, // "1.2.840.113549.1.9.5": { // "name": "signingTime", // "utctime": "240117124047Z" // }, // "1.2.840.113549.1.9.16.2.12": { // "name": "signingCertificate", // "der": "MBowGDAWBBRm8CsywsLJD4JdzqqKycZPGZzPQA==" // }, // "1.2.840.113549.1.9.4": { // "name": "messageDigest", // "digest": "y6cKjJoRfgJwW+Dj29w3tEfWqVybz7Sg+d8opKQxCjM=" // }, // "1.2.840.113549.1.9.16.2.47": { // "name": "signingCertificateV2", // "der": "MCYwJDAiBCDS9uRt7XQizNHUQFdoQTZvgoraVZquMxavTRqa1Ax4KA==" // } // } // } // ], // "uncommonOptions": "NO_SIGCERTV2_OID,NoSigningCertV2IssuerSerial" // }, // "timestampSignatureVerified": true, // "tstInfo": { // "tsaPolicyId": "2.16.840.1.114412.7.1", // "messageImprint": { // "hashAlg": "sha256", // "digest": "JqY7U+30qScMnRQwnDfUYEikZwOLHMhKX0oo5zo4ils=", // "digestMatches": true // }, // "serialNumber": "6E4597E574BC909213565DAEBC0E4888", // "genTime": "20240117124047Z" // } // } // } // } // ], // "pkcs7": { // "verify": { // "certs": [ // { // "issuerCN": "DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA", // "serial": "0544AFF3949D0839A6BFDB3F5FE56116" // }, // { // "issuerCN": "DigiCert Trusted Root G4", // "serial": "073637B724547CD847ACFD28662A5E5B" // }, // { // "issuerCN": "DigiCert Assured ID Root CA", // "serial": "0E9B188EF9D02DE7EFDB50E20840185A" // } // ] // } // } // } // } // } Dim issuerCN As String Dim serial As String Dim genTime As New Chilkat.DtObj Dim dt As New Chilkat.CkDateTime // Show the certificates embedded in the PKCS7 signature. System.DebugLog("Certificates contained in the PKCS7 signature:") Dim i As Int32 i = 0 Dim count_i As Int32 count_i = json.SizeOfArray("pkcs7.verify.certs") While i < count_i json.I = i issuerCN = json.StringOf("pkcs7.verify.certs[i].issuerCN") serial = json.StringOf("pkcs7.verify.certs[i].serial") System.DebugLog(issuerCN + ", " + serial) i = i + 1 Wend // Show details about the signing certificate(s) Dim numSigners As Int32 numSigners = json.SizeOfArray("pkcs7.verify.signerInfo") i = 0 While i < numSigners json.I = i System.DebugLog("---- Signing Certificate ----") System.DebugLog("serial number: " + json.StringOf("pkcs7.verify.signerInfo[i].cert.serialNumber")) System.DebugLog("issuerCN: " + json.StringOf("pkcs7.verify.signerInfo[i].cert.issuerCN")) System.DebugLog("hash algorithm: " + json.StringOf("pkcs7.verify.signerInfo[i].cert.digestAlgName")) System.DebugLog("signing algorithm: " + json.StringOf("pkcs7.verify.signerInfo[i].signingAlgName")) // If this signature includes a timestamp token, get information about it. If (json.HasMember("pkcs7.verify.signerInfo[i].unauthAttr.""1.3.6.1.4.1.311.3.3.1""") = True) Then // We're going to assume the timestamp token had only 1 signer.. System.DebugLog("--- Timestamp Token ----") System.DebugLog("TS hash algorithm: " + json.StringOf("pkcs7.verify.signerInfo[i].unauthAttr.""1.3.6.1.4.1.311.3.3.1"".verify.digestAlgorithms[0]")) System.DebugLog("TS certificate serial: " + json.StringOf("pkcs7.verify.signerInfo[i].unauthAttr.""1.3.6.1.4.1.311.3.3.1"".verify.signerInfo[0].cert.serialNumber")) System.DebugLog("TS certificate issuerCN: " + json.StringOf("pkcs7.verify.signerInfo[i].unauthAttr.""1.3.6.1.4.1.311.3.3.1"".verify.signerInfo[0].cert.issuerCN")) System.DebugLog("timestamp signature verified: " + Str(json.BoolOf("pkcs7.verify.signerInfo[i].unauthAttr.""1.3.6.1.4.1.311.3.3.1"".timestampSignatureVerified"))) Dim success As Boolean success = json.DtOf("pkcs7.verify.signerInfo[i].unauthAttr.""1.3.6.1.4.1.311.3.3.1"".tstInfo.genTime",False,genTime) success = dt.SetFromDtObj(genTime) System.DebugLog("timestamp date/time: " + dt.GetAsRfc822(True)) End If i = i + 1 Wend System.DebugLog("The Authenticode signature is valid.") // Sample output: // Certificates contained in the PKCS7 signature: // AAA Certificate Services, 48FC93B46055948D36A7C98A89D69416 // Sectigo Public Code Signing Root R46, 621D6D0C52019E3B9079152089211C0A // Sectigo Public Code Signing CA R36, 3FF5B69109BFD4046C92CC0D18EE23C2 // ---- Signing Certificate ---- // serial number: 3FF5B69109BFD4046C92CC0D18EE23C2 // issuerCN: Sectigo Public Code Signing CA R36 // hash algorithm: SHA256 // signing algorithm: RSA-PKCSV-1_5 // --- Timestamp Token ---- // TS hash algorithm: sha256 // TS certificate serial: 0544AFF3949D0839A6BFDB3F5FE56116 // TS certificate issuerCN: DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA // timestamp signature verified: True // timestamp date/time: Wed, 17 Jan 2024 06:40:47 -0600 // The Authenticode signature is valid. |
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