Delphi ActiveX
Delphi ActiveX
Verify and Unwrap S/MIME, and get Information about CMS Signature
See more MIME Examples
Demonstrates calling the Verify method to verify and unwrap S/MIME. The MIME is restored to the original structure that it would have originally had prior to signing. The Verify method works with both detached signatures, as well as opaque/attached signatures.Calls LastJsonData to get information about the signature(s) that were verified.
Chilkat Delphi ActiveX Downloads
uses
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;
...
procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
mime: TChilkatMime;
verified: Integer;
json: TChilkatJsonObject;
signingTime: TDtObj;
authAttrSigningTimeUtctime: TDtObj;
issuerCN: WideString;
serial: WideString;
strVal: WideString;
certSerialNumber: WideString;
certIssuerCN: WideString;
certDigestAlgOid: WideString;
certDigestAlgName: WideString;
contentType: WideString;
messageDigest: WideString;
signingAlgOid: WideString;
signingAlgName: WideString;
authAttrContentTypeName: WideString;
authAttrContentTypeOid: WideString;
authAttrSigningTimeName: WideString;
authAttrMessageDigestName: WideString;
authAttrMessageDigestDigest: WideString;
authAttr1_2_840_113549_1_9_15Der: WideString;
authAttr1_3_6_1_4_1_311_16_4Der: WideString;
i: Integer;
count_i: Integer;
begin
success := 0;
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
mime := TChilkatMime.Create(Self);
// Load the signed MIME from a file...
success := mime.LoadMimeFile('qa_data/mime/detached_sig.eml');
if (success = 0) then
begin
Memo1.Lines.Add(mime.LastErrorText);
Exit;
end;
// Verify the S/MIME and restore the MIME
// to the structure/content it had prior to signing.
verified := mime.Verify();
if (verified = 0) then
begin
Memo1.Lines.Add(mime.LastErrorText);
Exit;
end;
// Examine the details of what was verified.
json := TChilkatJsonObject.Create(Self);
mime.GetLastJsonData(json.ControlInterface);
json.EmitCompact := 0;
Memo1.Lines.Add(json.Emit());
// The code to parse the following JSON (i.e. extract desired information) is shown below..
// {
// "pkcs7": {
// "verify": {
// "certs": [
// {
// "issuerCN": "VeriSign Class 1 Public Primary Certification Authority - G3",
// "serial": "0702A21A85B84B659E180A6EE6F5A365"
// },
// {
// "issuerCN": "VeriSign Class 1 Public Primary Certification Authority - G3",
// "serial": "008B5B75568454850B00CFAF3848CEB1A4"
// },
// {
// "issuerCN": "Symantec Class 1 Individual Subscriber CA - G5",
// "serial": "619C55C32FF6BD1A7B7E0330D21C8F3C"
// }
// ],
// "digestAlgorithms": [
// "sha1"
// ],
// "signerInfo": [
// {
// "cert": {
// "serialNumber": "619C55C32FF6BD1A7B7E0330D21C8F3C",
// "issuerCN": "Symantec Class 1 Individual Subscriber CA - G5",
// "digestAlgOid": "1.3.14.3.2.26",
// "digestAlgName": "SHA1"
// },
// "contentType": "1.2.840.113549.1.7.1",
// "signingTime": "160428055000Z",
// "messageDigest": "2hJJVmO/jtaJV5uCKMFzIkRRvtY=",
// "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": "160428055000Z"
// },
// "1.2.840.113549.1.9.4": {
// "name": "messageDigest",
// "digest": "2hJJVmO/jtaJV5uCKMFzIkRRvtY="
// },
// "1.2.840.113549.1.9.15": {
// "der": "MFAwCwYJYIZIAWUDBAECMAoGCCqGSIb3DQMHMA4GCCqGSIb3DQMCAgIAgDANBggqhkiG9w0DAgIBQDAHBgUrDgMCBzANBggqhkiG9w0DAgIBKA=="
// },
// "1.3.6.1.4.1.311.16.4": {
// "der": "MIG7MIG...7fgMw0hyPPA=="
// }
// }
// }
// ]
// }
// }
// }
// Use this online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON
signingTime := TDtObj.Create(Self);
authAttrSigningTimeUtctime := TDtObj.Create(Self);
i := 0;
count_i := json.SizeOfArray('pkcs7.verify.certs');
while i < count_i do
begin
json.I := i;
issuerCN := json.StringOf('pkcs7.verify.certs[i].issuerCN');
serial := json.StringOf('pkcs7.verify.certs[i].serial');
i := i + 1;
end;
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;
i := 0;
count_i := json.SizeOfArray('pkcs7.verify.signerInfo');
while i < count_i do
begin
json.I := i;
certSerialNumber := json.StringOf('pkcs7.verify.signerInfo[i].cert.serialNumber');
certIssuerCN := json.StringOf('pkcs7.verify.signerInfo[i].cert.issuerCN');
certDigestAlgOid := json.StringOf('pkcs7.verify.signerInfo[i].cert.digestAlgOid');
certDigestAlgName := json.StringOf('pkcs7.verify.signerInfo[i].cert.digestAlgName');
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');
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');
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);
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');
authAttr1_2_840_113549_1_9_15Der := json.StringOf('pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.15".der');
authAttr1_3_6_1_4_1_311_16_4Der := json.StringOf('pkcs7.verify.signerInfo[i].authAttr."1.3.6.1.4.1.311.16.4".der');
i := i + 1;
end;
end;