Delphi ActiveX Requires Chilkat v11.0.0+
Delphi ActiveX
Validate CAdES-T Signature (.p7m)
See more CAdES Examples
Validates a CAdES-T CMS signature and extracts the time-stamp token and gets information about it. Also validates the time-stamp token.Chilkat Delphi ActiveX Downloads
var
success: Integer;
crypt: TChilkatCrypt2;
cmsOptions: TChilkatJsonObject;
json: TChilkatJsonObject;
i: Integer;
count_i: Integer;
strVal: WideString;
certSerialNumber: WideString;
certIssuerCN: WideString;
certIssuerDN: WideString;
certDigestAlgOid: WideString;
certDigestAlgName: WideString;
contentType: WideString;
signingTime: TDtObj;
messageDigest: WideString;
signingAlgOid: WideString;
signingAlgName: WideString;
authAttrContentTypeName: WideString;
authAttrContentTypeOid: WideString;
authAttrSigningTimeName: WideString;
authAttrSigningTimeUtctime: TDtObj;
authAttrMessageDigestName: WideString;
authAttrMessageDigestDigest: WideString;
authAttrSigningCertificateV2Name: WideString;
authAttrSigningCertificateV2Der: WideString;
unauthAttrTimestampTokenName: WideString;
unauthAttrTimestampTokenDer: WideString;
unauthAttrTimestampTokenTimestampSignatureVerified: Integer;
unauthAttrTimestampTokenTstInfoTsaPolicyId: WideString;
unauthAttrTimestampTokenTstInfoMessageImprintHashAlg: WideString;
unauthAttrTimestampTokenTstInfoMessageImprintDigest: WideString;
unauthAttrTimestampTokenTstInfoMessageImprintDigestMatches: Integer;
unauthAttrTimestampTokenTstInfoSerialNumber: WideString;
unauthAttrTimestampTokenTstInfoGenTime: TDtObj;
j: Integer;
count_j: Integer;
begin
success := 0;
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
crypt := TChilkatCrypt2.Create(Self);
// Indicate that the CAdES-T timestamp tokens must also pass validation for the signature to be validated.
cmsOptions := TChilkatJsonObject.Create(Self);
cmsOptions.UpdateBool('ValidateTimestampTokens',1);
crypt.CmsOptions := cmsOptions.Emit();
// Validate the .p7m and extract the original signed data to an output file.
// Note: The timestampToken is an unauthenticated attribute. See the code below that retrieves and parses the last JSON data.
// for details about examining timestampToken.
success := crypt.VerifyP7M('qa_data/cades/CAdES-T/Signature-C-T-1.p7m','qa_output/out.dat');
// Get information about the CMS signature in the last JSON data.
// The detailed results of the signature validation are available in the last JSON data.
// (If the non-success return status was caused by an error such as "file not found", then the
// last JSON data would be empty.)
json := TChilkatJsonObject.Create(Self);
crypt.GetLastJsonData(json.ControlInterface);
json.EmitCompact := 0;
Memo1.Lines.Add(json.Emit());
// Here is a sample result:
// See the parsing code below..
// Use this online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON
// {
// "pkcs7": {
// "verify": {
// "digestAlgorithms": [
// "sha256"
// ],
// "signerInfo": [
// {
// "cert": {
// "serialNumber": "00DCB814678CDB",
// "issuerCN": "LevelBCAOK",
// "issuerDN": "",
// "digestAlgOid": "2.16.840.1.101.3.4.2.1",
// "digestAlgName": "SHA256"
// },
// "contentType": "1.2.840.113549.1.7.1",
// "signingTime": "131203065741Z",
// "messageDigest": "JJZt41Nt8VsYahP+Xti4rR3vBDkUfRd6gquItl6R5Os=",
// "signingAlgOid": "1.2.840.113549.1.1.1",
// "signingAlgName": "RSA-PKCSV-1_5",
// "authAttr": {
// "1.2.840.113549.1.9.3": {
// "name": "contentType",
// "oid": "1.2.840.113549.1.7.1"
// },
// "1.2.840.113549.1.9.5": {
// "name": "signingTime",
// "utctime": "131203065741Z"
// },
// "1.2.840.113549.1.9.4": {
// "name": "messageDigest",
// "digest": "JJZt41Nt8VsYahP+Xti4rR3vBDkUfRd6gquItl6R5Os="
// },
// "1.2.840.113549.1.9.16.2.47": {
// "name": "signingCertificateV2",
// "der": "MIGIMIGFMIGCBCBJrxOU0w0dWGsVovjLv9QDH3syB5mLVv3grSYA40x9IDBeMFOkUTBPMQswCQYDVQQGEwJGUjENMAsGA1UEChMERVRTSTEcMBoGA1UECwwTUGx1Z3Rlc3RzXzIwMTMtMjAxNDETMBEGA1UEAxMKTGV2ZWxCQ0FPSwIHANy4FGeM2w=="
// }
// },
// "unauthAttr": {
// "1.2.840.113549.1.9.16.2.14": {
// "name": "timestampToken",
// "der": "MIIL+AYJKoZI...u7CfcjURNTY=",
// "verify": {
// "digestAlgorithms": [
// "sha256"
// ],
// "signerInfo": [
// {
// "cert": {
// "serialNumber": "01AA4592D36C61",
// "issuerCN": "RootCAOK",
// "issuerDN": "",
// "digestAlgOid": "2.16.840.1.101.3.4.2.1",
// "digestAlgName": "SHA256"
// },
// "contentType": "1.2.840.113549.1.9.16.1.4",
// "messageDigest": "NSsMUrfoyCQ0OszPE1YLx1j3EyyCiBmnE5Sua6ghu/Q=",
// "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"
// },
// "1.2.840.113549.1.9.4": {
// "name": "messageDigest",
// "digest": "NSsMUrfoyCQ0OszPE1YLx1j3EyyCiBmnE5Sua6ghu/Q="
// },
// "1.2.840.113549.1.9.16.2.47": {
// "name": "signingCertificateV2",
// "der": "MIGGMIGDMIGABCDB/np5UxvhcPnSxD2Kme+C88uXGCMWLAvFPHNvTApTWDBcMFGkTzBNMQswCQYDVQQGEwJGUjENMAsGA1UEChMERVRTSTEcMBoGA1UECwwTUGx1Z3Rlc3RzXzIwMTMtMjAxNDERMA8GA1UEAxMIUm9vdENBT0sCBwGqRZLTbGE="
// }
// }
// }
// ]
// },
// "timestampSignatureVerified": true,
// "tstInfo": {
// "tsaPolicyId": "1.3.6.1.4.1.2706.2.2.5.2.1.1.1",
// "messageImprint": {
// "hashAlg": "sha256",
// "digest": "C8xEe9NA4X1cUyHGX9zG89ipmQ2byFs3aa+Xe4Fz2P0=",
// "digestMatches": true
// },
// "serialNumber": "313E162121D922",
// "genTime": "20131203065742Z"
// }
// }
// }
// }
// ]
// }
// }
// }
//
signingTime := TDtObj.Create(Self);
authAttrSigningTimeUtctime := TDtObj.Create(Self);
unauthAttrTimestampTokenTstInfoGenTime := TDtObj.Create(Self);
// Iterate over the hash algorithms used in the signature.
i := 0;
count_i := json.SizeOfArray('pkcs7.verify.digestAlgorithms');
while i < count_i do
begin
json.I := i;
strVal := json.StringOf('pkcs7.verify.digestAlgorithms[i]');
i := i + 1;
end;
// For each signer...
i := 0;
count_i := json.SizeOfArray('pkcs7.verify.signerInfo');
while i < count_i do
begin
json.I := i;
// Get information about the certificate used by this signer.
certSerialNumber := json.StringOf('pkcs7.verify.signerInfo[i].cert.serialNumber');
certIssuerCN := json.StringOf('pkcs7.verify.signerInfo[i].cert.issuerCN');
certIssuerDN := json.StringOf('pkcs7.verify.signerInfo[i].cert.issuerDN');
certDigestAlgOid := json.StringOf('pkcs7.verify.signerInfo[i].cert.digestAlgOid');
certDigestAlgName := json.StringOf('pkcs7.verify.signerInfo[i].cert.digestAlgName');
// Get additional information for this signer, such as the signingTime, signature algorithm, etc.
contentType := json.StringOf('pkcs7.verify.signerInfo[i].contentType');
json.DtOf('pkcs7.verify.signerInfo[i].signingTime',0,signingTime.ControlInterface);
messageDigest := json.StringOf('pkcs7.verify.signerInfo[i].messageDigest');
signingAlgOid := json.StringOf('pkcs7.verify.signerInfo[i].signingAlgOid');
signingAlgName := json.StringOf('pkcs7.verify.signerInfo[i].signingAlgName');
// --------------------------------
// Examine authenticated attributes.
// --------------------------------
// contentType
if (json.HasMember('pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.3"') = 1) then
begin
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');
end;
// signingTime
if (json.HasMember('pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.5"') = 1) then
begin
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',0,authAttrSigningTimeUtctime.ControlInterface);
end;
// messageDigest
if (json.HasMember('pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.4"') = 1) then
begin
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');
end;
// signingCertificateV2
if (json.HasMember('pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.16.2.47"') = 1) then
begin
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');
end;
// --------------------------------
// Examine unauthenticated attributes.
// --------------------------------
// timestampToken (the timestampToken is what makes this signature a CAdES-T)
if (json.HasMember('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14"') = 1) then
begin
unauthAttrTimestampTokenName := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".name');
unauthAttrTimestampTokenDer := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".der');
// This is where we find out if the timestampToken's signature is valid.
unauthAttrTimestampTokenTimestampSignatureVerified := json.BoolOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".timestampSignatureVerified');
unauthAttrTimestampTokenTstInfoTsaPolicyId := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".tstInfo.tsaPolicyId');
unauthAttrTimestampTokenTstInfoMessageImprintHashAlg := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".tstInfo.messageImprint.hashAlg');
unauthAttrTimestampTokenTstInfoMessageImprintDigest := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".tstInfo.messageImprint.digest');
// Here is where we check to see if the digest in the timestampToken's messageImprint matches the digest of the signature of this signerInfo
unauthAttrTimestampTokenTstInfoMessageImprintDigestMatches := json.BoolOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".tstInfo.messageImprint.digestMatches');
unauthAttrTimestampTokenTstInfoSerialNumber := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".tstInfo.serialNumber');
// Here is where we get the date/time of the timestampToken (i.e. when it was timestamped)
json.DtOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".tstInfo.genTime',0,unauthAttrTimestampTokenTstInfoGenTime.ControlInterface);
// The following code gets details about the validity of the timestampToken's signature...
j := 0;
count_j := json.SizeOfArray('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.digestAlgorithms');
while j < count_j do
begin
json.J := j;
strVal := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.digestAlgorithms[j]');
j := j + 1;
end;
j := 0;
count_j := json.SizeOfArray('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo');
while j < count_j do
begin
json.J := j;
certSerialNumber := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].cert.serialNumber');
certIssuerCN := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].cert.issuerCN');
certIssuerDN := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].cert.issuerDN');
certDigestAlgOid := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].cert.digestAlgOid');
certDigestAlgName := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].cert.digestAlgName');
contentType := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].contentType');
messageDigest := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].messageDigest');
signingAlgOid := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].signingAlgOid');
signingAlgName := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].signingAlgName');
authAttrContentTypeName := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].authAttr."1.2.840.113549.1.9.3".name');
authAttrContentTypeOid := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].authAttr."1.2.840.113549.1.9.3".oid');
authAttrMessageDigestName := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].authAttr."1.2.840.113549.1.9.4".name');
authAttrMessageDigestDigest := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].authAttr."1.2.840.113549.1.9.4".digest');
authAttrSigningCertificateV2Name := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].authAttr."1.2.840.113549.1.9.16.2.47".name');
authAttrSigningCertificateV2Der := json.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].authAttr."1.2.840.113549.1.9.16.2.47".der');
j := j + 1;
end;
end;
i := i + 1;
end;
if (success <> 1) then
begin
Memo1.Lines.Add(crypt.LastErrorText);
Memo1.Lines.Add('CAdES-T verification failed.');
end
else
begin
Memo1.Lines.Add('CAdES-T signature is valid.');
end;