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(AutoIt) Verify a CAdES-BES Signature and Examine Signature ContentsDemonstrates how to validate a .p7m (.p7s) signature and examine the contents of the signature.
; This example requires the Chilkat API to have been previously unlocked. ; See Global Unlock Sample for sample code. $oCrypt = ObjCreate("Chilkat.Crypt2") Local $sOutputFile = "qa_output/original.xml" Local $sInFile = "qa_data/p7m/fattura_signature.xml.p7m" ; Verify the signature and extract the contained file, which in this case is XML. Local $bSuccess = $oCrypt.VerifyP7M($sInFile,$sOutputFile) If ($bSuccess = False) Then ConsoleWrite($oCrypt.LastErrorText & @CRLF) Exit EndIf ConsoleWrite("Signature validated." & @CRLF) ; Now let's examine the information about the signature. Local $oJson = $oCrypt.LastJsonData() If ($oCrypt.LastMethodSuccess = False) Then ; This should never be the case... ConsoleWrite("No information available." & @CRLF) Exit EndIf $oJson.EmitCompact = False ConsoleWrite($oJson.Emit() & @CRLF) ; 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 $oAuthAttrSigningTimeUtctime = ObjCreate("Chilkat.DtObj") Local $sIssuerCN Local $serial Local $strVal Local $sCertSubjectKeyIdentifier Local $sCertDigestAlgOid Local $sCertDigestAlgName Local $signingAlgOid Local $signingAlgName Local $sAuthAttrContentTypeName Local $sAuthAttrContentTypeOid Local $sAuthAttrSigningTimeName Local $sAuthAttrMessageDigestName Local $sAuthAttrMessageDigestDigest Local $sAuthAttrSigningCertificateV2Name Local $sAuthAttrSigningCertificateV2Der Local $i = 0 Local $iCount_i = $oJson.SizeOfArray("pkcs7.verify.certs") While $i < $iCount_i $oJson.I = $i $sIssuerCN = $oJson.StringOf("pkcs7.verify.certs[i].issuerCN") $serial = $oJson.StringOf("pkcs7.verify.certs[i].serial") $i = $i + 1 Wend $i = 0 $iCount_i = $oJson.SizeOfArray("pkcs7.verify.digestAlgorithms") While $i < $iCount_i $oJson.I = $i $strVal = $oJson.StringOf("pkcs7.verify.digestAlgorithms[i]") $i = $i + 1 Wend $i = 0 $iCount_i = $oJson.SizeOfArray("pkcs7.verify.signerInfo") While $i < $iCount_i $oJson.I = $i $sCertSubjectKeyIdentifier = $oJson.StringOf("pkcs7.verify.signerInfo[i].cert.subjectKeyIdentifier") $sCertDigestAlgOid = $oJson.StringOf("pkcs7.verify.signerInfo[i].cert.digestAlgOid") $sCertDigestAlgName = $oJson.StringOf("pkcs7.verify.signerInfo[i].cert.digestAlgName") $signingAlgOid = $oJson.StringOf("pkcs7.verify.signerInfo[i].signingAlgOid") $signingAlgName = $oJson.StringOf("pkcs7.verify.signerInfo[i].signingAlgName") $sAuthAttrContentTypeName = $oJson.StringOf("pkcs7.verify.signerInfo[i].authAttr.""1.2.840.113549.1.9.3"".name") $sAuthAttrContentTypeOid = $oJson.StringOf("pkcs7.verify.signerInfo[i].authAttr.""1.2.840.113549.1.9.3"".oid") $sAuthAttrSigningTimeName = $oJson.StringOf("pkcs7.verify.signerInfo[i].authAttr.""1.2.840.113549.1.9.5"".name") $oJson.DtOf("pkcs7.verify.signerInfo[i].authAttr.""1.2.840.113549.1.9.5"".utctime",False,$oAuthAttrSigningTimeUtctime) $sAuthAttrMessageDigestName = $oJson.StringOf("pkcs7.verify.signerInfo[i].authAttr.""1.2.840.113549.1.9.4"".name") $sAuthAttrMessageDigestDigest = $oJson.StringOf("pkcs7.verify.signerInfo[i].authAttr.""1.2.840.113549.1.9.4"".digest") $sAuthAttrSigningCertificateV2Name = $oJson.StringOf("pkcs7.verify.signerInfo[i].authAttr.""1.2.840.113549.1.9.16.2.47"".name") $sAuthAttrSigningCertificateV2Der = $oJson.StringOf("pkcs7.verify.signerInfo[i].authAttr.""1.2.840.113549.1.9.16.2.47"".der") $i = $i + 1 Wend |
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