Delphi DLL Requires Chilkat v11.0.0+
Delphi DLL
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 DLL Downloads
var
success: Boolean;
crypt: HCkCrypt2;
cmsOptions: HCkJsonObject;
json: HCkJsonObject;
i: Integer;
count_i: Integer;
strVal: PWideChar;
certSerialNumber: PWideChar;
certIssuerCN: PWideChar;
certIssuerDN: PWideChar;
certDigestAlgOid: PWideChar;
certDigestAlgName: PWideChar;
contentType: PWideChar;
signingTime: HCkDtObj;
messageDigest: PWideChar;
signingAlgOid: PWideChar;
signingAlgName: PWideChar;
authAttrContentTypeName: PWideChar;
authAttrContentTypeOid: PWideChar;
authAttrSigningTimeName: PWideChar;
authAttrSigningTimeUtctime: HCkDtObj;
authAttrMessageDigestName: PWideChar;
authAttrMessageDigestDigest: PWideChar;
authAttrSigningCertificateV2Name: PWideChar;
authAttrSigningCertificateV2Der: PWideChar;
unauthAttrTimestampTokenName: PWideChar;
unauthAttrTimestampTokenDer: PWideChar;
unauthAttrTimestampTokenTimestampSignatureVerified: Boolean;
unauthAttrTimestampTokenTstInfoTsaPolicyId: PWideChar;
unauthAttrTimestampTokenTstInfoMessageImprintHashAlg: PWideChar;
unauthAttrTimestampTokenTstInfoMessageImprintDigest: PWideChar;
unauthAttrTimestampTokenTstInfoMessageImprintDigestMatches: Boolean;
unauthAttrTimestampTokenTstInfoSerialNumber: PWideChar;
unauthAttrTimestampTokenTstInfoGenTime: HCkDtObj;
j: Integer;
count_j: Integer;
begin
success := False;
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
crypt := CkCrypt2_Create();
// Indicate that the CAdES-T timestamp tokens must also pass validation for the signature to be validated.
cmsOptions := CkJsonObject_Create();
CkJsonObject_UpdateBool(cmsOptions,'ValidateTimestampTokens',True);
CkCrypt2_putCmsOptions(crypt,CkJsonObject__emit(cmsOptions));
// 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 := CkCrypt2_VerifyP7M(crypt,'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 := CkJsonObject_Create();
CkCrypt2_GetLastJsonData(crypt,json);
CkJsonObject_putEmitCompact(json,False);
Memo1.Lines.Add(CkJsonObject__emit(json));
// 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 := CkDtObj_Create();
authAttrSigningTimeUtctime := CkDtObj_Create();
unauthAttrTimestampTokenTstInfoGenTime := CkDtObj_Create();
// Iterate over the hash algorithms used in the signature.
i := 0;
count_i := CkJsonObject_SizeOfArray(json,'pkcs7.verify.digestAlgorithms');
while i < count_i do
begin
CkJsonObject_putI(json,i);
strVal := CkJsonObject__stringOf(json,'pkcs7.verify.digestAlgorithms[i]');
i := i + 1;
end;
// For each signer...
i := 0;
count_i := CkJsonObject_SizeOfArray(json,'pkcs7.verify.signerInfo');
while i < count_i do
begin
CkJsonObject_putI(json,i);
// Get information about the certificate used by this signer.
certSerialNumber := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].cert.serialNumber');
certIssuerCN := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].cert.issuerCN');
certIssuerDN := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].cert.issuerDN');
certDigestAlgOid := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].cert.digestAlgOid');
certDigestAlgName := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].cert.digestAlgName');
// Get additional information for this signer, such as the signingTime, signature algorithm, etc.
contentType := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].contentType');
CkJsonObject_DtOf(json,'pkcs7.verify.signerInfo[i].signingTime',False,signingTime);
messageDigest := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].messageDigest');
signingAlgOid := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].signingAlgOid');
signingAlgName := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].signingAlgName');
// --------------------------------
// Examine authenticated attributes.
// --------------------------------
// contentType
if (CkJsonObject_HasMember(json,'pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.3"') = True) then
begin
authAttrContentTypeName := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.3".name');
authAttrContentTypeOid := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.3".oid');
end;
// signingTime
if (CkJsonObject_HasMember(json,'pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.5"') = True) then
begin
authAttrSigningTimeName := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.5".name');
CkJsonObject_DtOf(json,'pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.5".utctime',False,authAttrSigningTimeUtctime);
end;
// messageDigest
if (CkJsonObject_HasMember(json,'pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.4"') = True) then
begin
authAttrMessageDigestName := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.4".name');
authAttrMessageDigestDigest := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.4".digest');
end;
// signingCertificateV2
if (CkJsonObject_HasMember(json,'pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.16.2.47"') = True) then
begin
authAttrSigningCertificateV2Name := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.16.2.47".name');
authAttrSigningCertificateV2Der := CkJsonObject__stringOf(json,'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 (CkJsonObject_HasMember(json,'pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14"') = True) then
begin
unauthAttrTimestampTokenName := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".name');
unauthAttrTimestampTokenDer := CkJsonObject__stringOf(json,'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 := CkJsonObject_BoolOf(json,'pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".timestampSignatureVerified');
unauthAttrTimestampTokenTstInfoTsaPolicyId := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".tstInfo.tsaPolicyId');
unauthAttrTimestampTokenTstInfoMessageImprintHashAlg := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".tstInfo.messageImprint.hashAlg');
unauthAttrTimestampTokenTstInfoMessageImprintDigest := CkJsonObject__stringOf(json,'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 := CkJsonObject_BoolOf(json,'pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".tstInfo.messageImprint.digestMatches');
unauthAttrTimestampTokenTstInfoSerialNumber := CkJsonObject__stringOf(json,'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)
CkJsonObject_DtOf(json,'pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".tstInfo.genTime',False,unauthAttrTimestampTokenTstInfoGenTime);
// The following code gets details about the validity of the timestampToken's signature...
j := 0;
count_j := CkJsonObject_SizeOfArray(json,'pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.digestAlgorithms');
while j < count_j do
begin
CkJsonObject_putJ(json,j);
strVal := CkJsonObject__stringOf(json,'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 := CkJsonObject_SizeOfArray(json,'pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo');
while j < count_j do
begin
CkJsonObject_putJ(json,j);
certSerialNumber := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].cert.serialNumber');
certIssuerCN := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].cert.issuerCN');
certIssuerDN := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].cert.issuerDN');
certDigestAlgOid := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].cert.digestAlgOid');
certDigestAlgName := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].cert.digestAlgName');
contentType := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].contentType');
messageDigest := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].messageDigest');
signingAlgOid := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].signingAlgOid');
signingAlgName := CkJsonObject__stringOf(json,'pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].signingAlgName');
authAttrContentTypeName := CkJsonObject__stringOf(json,'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 := CkJsonObject__stringOf(json,'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 := CkJsonObject__stringOf(json,'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 := CkJsonObject__stringOf(json,'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 := CkJsonObject__stringOf(json,'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 := CkJsonObject__stringOf(json,'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 <> True) then
begin
Memo1.Lines.Add(CkCrypt2__lastErrorText(crypt));
Memo1.Lines.Add('CAdES-T verification failed.');
end
else
begin
Memo1.Lines.Add('CAdES-T signature is valid.');
end;
CkCrypt2_Dispose(crypt);
CkJsonObject_Dispose(cmsOptions);
CkJsonObject_Dispose(json);
CkDtObj_Dispose(signingTime);
CkDtObj_Dispose(authAttrSigningTimeUtctime);
CkDtObj_Dispose(unauthAttrTimestampTokenTstInfoGenTime);