C
C
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 C Downloads
#include <C_CkCrypt2.h>
#include <C_CkJsonObject.h>
#include <C_CkDtObj.h>
void ChilkatSample(void)
{
BOOL success;
HCkCrypt2 crypt;
HCkJsonObject cmsOptions;
HCkJsonObject json;
int i;
int count_i;
const char *strVal;
const char *certSerialNumber;
const char *certIssuerCN;
const char *certIssuerDN;
const char *certDigestAlgOid;
const char *certDigestAlgName;
const char *contentType;
HCkDtObj signingTime;
const char *messageDigest;
const char *signingAlgOid;
const char *signingAlgName;
const char *authAttrContentTypeName;
const char *authAttrContentTypeOid;
const char *authAttrSigningTimeName;
HCkDtObj authAttrSigningTimeUtctime;
const char *authAttrMessageDigestName;
const char *authAttrMessageDigestDigest;
const char *authAttrSigningCertificateV2Name;
const char *authAttrSigningCertificateV2Der;
const char *unauthAttrTimestampTokenName;
const char *unauthAttrTimestampTokenDer;
BOOL unauthAttrTimestampTokenTimestampSignatureVerified;
const char *unauthAttrTimestampTokenTstInfoTsaPolicyId;
const char *unauthAttrTimestampTokenTstInfoMessageImprintHashAlg;
const char *unauthAttrTimestampTokenTstInfoMessageImprintDigest;
BOOL unauthAttrTimestampTokenTstInfoMessageImprintDigestMatches;
const char *unauthAttrTimestampTokenTstInfoSerialNumber;
HCkDtObj unauthAttrTimestampTokenTstInfoGenTime;
int j;
int count_j;
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);
printf("%s\n",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) {
CkJsonObject_putI(json,i);
strVal = CkJsonObject_stringOf(json,"pkcs7.verify.digestAlgorithms[i]");
i = i + 1;
}
// For each signer...
i = 0;
count_i = CkJsonObject_SizeOfArray(json,"pkcs7.verify.signerInfo");
while (i < count_i) {
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) {
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");
}
// signingTime
if (CkJsonObject_HasMember(json,"pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.5\"") == TRUE) {
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);
}
// messageDigest
if (CkJsonObject_HasMember(json,"pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.4\"") == TRUE) {
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");
}
// signingCertificateV2
if (CkJsonObject_HasMember(json,"pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.16.2.47\"") == TRUE) {
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");
}
// --------------------------------
// 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) {
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) {
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;
}
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) {
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;
}
}
i = i + 1;
}
if (success != TRUE) {
printf("%s\n",CkCrypt2_lastErrorText(crypt));
printf("CAdES-T verification failed.\n");
}
else {
printf("CAdES-T signature is valid.\n");
}
CkCrypt2_Dispose(crypt);
CkJsonObject_Dispose(cmsOptions);
CkJsonObject_Dispose(json);
CkDtObj_Dispose(signingTime);
CkDtObj_Dispose(authAttrSigningTimeUtctime);
CkDtObj_Dispose(unauthAttrTimestampTokenTstInfoGenTime);
}