public static bool VerifySignatures(FileInfo contentFile, Stream signedDataStream)
{
CmsProcessable signedContent = null;
CmsSignedData cmsSignedData = null;
Org.BouncyCastle.X509.Store.IX509Store store = null;
ICollection signers = null;
bool verifiedStatus = false;
try
{
//Org.BouncyCastle.Security.addProvider(new BouncyCastleProvider());
signedContent = new CmsProcessableFile(contentFile);
cmsSignedData = new CmsSignedData(signedContent, signedDataStream);
store = cmsSignedData.GetCertificates("Collection");//.getCertificates();
IX509Store certStore = cmsSignedData.GetCertificates("Collection");
signers = cmsSignedData.GetSignerInfos().GetSigners();
foreach (var item in signers)
{
SignerInformation signer = (SignerInformation)item;
var certCollection = certStore.GetMatches(signer.SignerID);
IEnumerator iter = certCollection.GetEnumerator();
iter.MoveNext();
var cert = (Org.BouncyCastle.X509.X509Certificate)iter.Current;
verifiedStatus = signer.Verify(cert.GetPublicKey());
}
}
catch (Exception e)
{
throw e;
}
return(verifiedStatus);
}
static void Main(string[] args)
{
var certificateData = File.ReadAllBytes("YOUR_p7b_FILE");
var cert = new X509CertificateParser().ReadCertificate(certificateData);
//I just wanted to know if I can see the publicKey somehow
//var publicKey = cert.GetPublicKey();
var store = new Pkcs12Store(File.OpenRead("YOUR_p12_File"), "test".ToCharArray());
var privateKey = store.GetKey("THE_NAME_OF_KEY_YOU_WANT_TO_GET").Key;
var signedDataGen = new CmsSignedDataGenerator();
signedDataGen.AddSigner(privateKey, cert, CmsSignedDataGenerator.EncryptionRsa, CmsSignedDataGenerator.DigestSha512);
var zipContent = new CmsProcessableFile(new FileInfo("YOUR_DATA_FILE"));
//For me a zip
var signedData = signedDataGen.Generate(zipContent, true);
var envDataGen = new CmsEnvelopedDataGenerator();
envDataGen.AddKeyTransRecipient(cert);
var sData = new CmsProcessableByteArray(signedData.GetEncoded());
var enveloped = envDataGen.Generate(sData, CmsEnvelopedDataGenerator.DesEde3Cbc);
var dos = new DerOutputStream(File.OpenWrite("YOUR_DATA_FILE.zip.encrypted.sig)"));
var bytesToWrite = enveloped.GetEncoded();
dos.Write(bytesToWrite, 0, bytesToWrite.Length);
dos.Flush();
dos.Close();
}
public byte[] FirmaFileBouncy(string NomeFile, X509Certificate2 cert, bool GiaFirmato, bool UsaTSA, string TSAurl, string TSAuser, string TSApass, out string RisFirma)
{
try
{
SHA256Managed hashSha256 = new SHA256Managed();
byte[] certHash = hashSha256.ComputeHash(cert.RawData);
EssCertIDv2 essCert1 = new EssCertIDv2(new Org.BouncyCastle.Asn1.X509.AlgorithmIdentifier("2.16.840.1.101.3.4.2.1"), certHash);
SigningCertificateV2 scv2 = new SigningCertificateV2(new EssCertIDv2[] { essCert1 });
Org.BouncyCastle.Asn1.Cms.Attribute CertHAttribute = new Org.BouncyCastle.Asn1.Cms.Attribute(Org.BouncyCastle.Asn1.Pkcs.PkcsObjectIdentifiers.IdAASigningCertificateV2, new DerSet(scv2));
Asn1EncodableVector v = new Asn1EncodableVector();
v.Add(CertHAttribute);
Org.BouncyCastle.Asn1.Cms.AttributeTable AT = new Org.BouncyCastle.Asn1.Cms.AttributeTable(v);
CmsSignedDataGenWithRsaCsp cms = new CmsSignedDataGenWithRsaCsp();
var rsa = (RSACryptoServiceProvider)cert.PrivateKey;
Org.BouncyCastle.X509.X509Certificate certCopy = DotNetUtilities.FromX509Certificate(cert);
cms.MyAddSigner(rsa, certCopy, "1.2.840.113549.1.1.1", "2.16.840.1.101.3.4.2.1", AT, null);
ArrayList certList = new ArrayList();
certList.Add(certCopy);
Org.BouncyCastle.X509.Store.X509CollectionStoreParameters PP = new Org.BouncyCastle.X509.Store.X509CollectionStoreParameters(certList);
Org.BouncyCastle.X509.Store.IX509Store st1 = Org.BouncyCastle.X509.Store.X509StoreFactory.Create("CERTIFICATE/COLLECTION", PP);
cms.AddCertificates(st1);
//mi ricavo il file da firmare
FileInfo FileDaAprire = new FileInfo(NomeFile);
/*CmsSignedData Firmato;
* if (GiaFirmato) {
* CmsSignedData signedData = new CmsSignedData(File.ReadAllBytes(NomeFile));
* if (signedData!=null){
* SignerInformationStore signers = signedData.GetSignerInfos();
* certList.Add(signers.GetSigners());
* //MessageBox.Show(signedData.ContentInfo.GetEncoded().Length.ToString());
* //signedData.ContentInfo.GetEncoded();
* }
* certList.Insert(0,certCopy);
* CmsProcessableByteArray file = new CmsProcessableByteArray(signedData.ContentInfo.GetEncoded());
* Firmato = cms.Generate(file, true);
* } else {
* certList.Add(certCopy);
* CmsProcessableFile file = new CmsProcessableFile(FileDaAprire);
* Firmato = cms.Generate(file, true);
* }
*/
CmsProcessableFile file = new CmsProcessableFile(FileDaAprire);
CmsSignedData Firmato = cms.Generate(file, true);
byte[] Encoded = Firmato.GetEncoded();
if (UsaTSA)
{
CmsSignedData sd = new CmsSignedData(Encoded);
SignerInformationStore signers = sd.GetSignerInfos();
byte[] signature = null;
SignerInformation signer = null;
foreach (SignerInformation signer_ in signers.GetSigners())
{
signer = signer_;
break;
}
signature = signer.GetSignature();
Org.BouncyCastle.Asn1.Cms.AttributeTable at = new Org.BouncyCastle.Asn1.Cms.AttributeTable(GetTimestamp(signature, TSAurl, TSAuser, TSApass));
signer = SignerInformation.ReplaceUnsignedAttributes(signer, at);
IList signerInfos = new ArrayList();
signerInfos.Add(signer);
sd = CmsSignedData.ReplaceSigners(sd, new SignerInformationStore(signerInfos));
Encoded = sd.GetEncoded();
}
RisFirma = "";
return(Encoded);
}
catch (Exception ex)
{
RisFirma = ex.ToString();
return(null);
}
}
