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Diffstat (limited to 'crypto/src/ocsp/OCSPReqGenerator.cs')
| -rw-r--r-- | crypto/src/ocsp/OCSPReqGenerator.cs | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/crypto/src/ocsp/OCSPReqGenerator.cs b/crypto/src/ocsp/OCSPReqGenerator.cs new file mode 100644 index 000000000..8032a4598 --- /dev/null +++ b/crypto/src/ocsp/OCSPReqGenerator.cs @@ -0,0 +1,243 @@ +using System; +using System.Collections; +using System.IO; + +using Org.BouncyCastle.Asn1; +using Org.BouncyCastle.Asn1.Ocsp; +using Org.BouncyCastle.Asn1.X509; +using Org.BouncyCastle.Crypto; +using Org.BouncyCastle.Crypto.Parameters; +using Org.BouncyCastle.Security; +using Org.BouncyCastle.Security.Certificates; +using Org.BouncyCastle.Utilities; +using Org.BouncyCastle.X509; + +namespace Org.BouncyCastle.Ocsp +{ + public class OcspReqGenerator + { + private IList list = Platform.CreateArrayList(); + private GeneralName requestorName = null; + private X509Extensions requestExtensions = null; + + private class RequestObject + { + internal CertificateID certId; + internal X509Extensions extensions; + + public RequestObject( + CertificateID certId, + X509Extensions extensions) + { + this.certId = certId; + this.extensions = extensions; + } + + public Request ToRequest() + { + return new Request(certId.ToAsn1Object(), extensions); + } + } + + /** + * Add a request for the given CertificateID. + * + * @param certId certificate ID of interest + */ + public void AddRequest( + CertificateID certId) + { + list.Add(new RequestObject(certId, null)); + } + + /** + * Add a request with extensions + * + * @param certId certificate ID of interest + * @param singleRequestExtensions the extensions to attach to the request + */ + public void AddRequest( + CertificateID certId, + X509Extensions singleRequestExtensions) + { + list.Add(new RequestObject(certId, singleRequestExtensions)); + } + + /** + * Set the requestor name to the passed in X509Principal + * + * @param requestorName a X509Principal representing the requestor name. + */ + public void SetRequestorName( + X509Name requestorName) + { + try + { + this.requestorName = new GeneralName(GeneralName.DirectoryName, requestorName); + } + catch (Exception e) + { + throw new ArgumentException("cannot encode principal", e); + } + } + + public void SetRequestorName( + GeneralName requestorName) + { + this.requestorName = requestorName; + } + + public void SetRequestExtensions( + X509Extensions requestExtensions) + { + this.requestExtensions = requestExtensions; + } + + private OcspReq GenerateRequest( + DerObjectIdentifier signingAlgorithm, + AsymmetricKeyParameter privateKey, + X509Certificate[] chain, + SecureRandom random) + { + Asn1EncodableVector requests = new Asn1EncodableVector(); + + foreach (RequestObject reqObj in list) + { + try + { + requests.Add(reqObj.ToRequest()); + } + catch (Exception e) + { + throw new OcspException("exception creating Request", e); + } + } + + TbsRequest tbsReq = new TbsRequest(requestorName, new DerSequence(requests), requestExtensions); + + ISigner sig = null; + Signature signature = null; + + if (signingAlgorithm != null) + { + if (requestorName == null) + { + throw new OcspException("requestorName must be specified if request is signed."); + } + + try + { + sig = SignerUtilities.GetSigner(signingAlgorithm.Id); + if (random != null) + { + sig.Init(true, new ParametersWithRandom(privateKey, random)); + } + else + { + sig.Init(true, privateKey); + } + } + catch (Exception e) + { + throw new OcspException("exception creating signature: " + e, e); + } + + DerBitString bitSig = null; + + try + { + byte[] encoded = tbsReq.GetEncoded(); + sig.BlockUpdate(encoded, 0, encoded.Length); + + bitSig = new DerBitString(sig.GenerateSignature()); + } + catch (Exception e) + { + throw new OcspException("exception processing TBSRequest: " + e, e); + } + + AlgorithmIdentifier sigAlgId = new AlgorithmIdentifier(signingAlgorithm, DerNull.Instance); + + if (chain != null && chain.Length > 0) + { + Asn1EncodableVector v = new Asn1EncodableVector(); + try + { + for (int i = 0; i != chain.Length; i++) + { + v.Add( + X509CertificateStructure.GetInstance( + Asn1Object.FromByteArray(chain[i].GetEncoded()))); + } + } + catch (IOException e) + { + throw new OcspException("error processing certs", e); + } + catch (CertificateEncodingException e) + { + throw new OcspException("error encoding certs", e); + } + + signature = new Signature(sigAlgId, bitSig, new DerSequence(v)); + } + else + { + signature = new Signature(sigAlgId, bitSig); + } + } + + return new OcspReq(new OcspRequest(tbsReq, signature)); + } + + /** + * Generate an unsigned request + * + * @return the OcspReq + * @throws OcspException + */ + public OcspReq Generate() + { + return GenerateRequest(null, null, null, null); + } + + public OcspReq Generate( + string signingAlgorithm, + AsymmetricKeyParameter privateKey, + X509Certificate[] chain) + { + return Generate(signingAlgorithm, privateKey, chain, null); + } + + public OcspReq Generate( + string signingAlgorithm, + AsymmetricKeyParameter privateKey, + X509Certificate[] chain, + SecureRandom random) + { + if (signingAlgorithm == null) + throw new ArgumentException("no signing algorithm specified"); + + try + { + DerObjectIdentifier oid = OcspUtilities.GetAlgorithmOid(signingAlgorithm); + + return GenerateRequest(oid, privateKey, chain, random); + } + catch (ArgumentException) + { + throw new ArgumentException("unknown signing algorithm specified: " + signingAlgorithm); + } + } + + /** + * Return an IEnumerable of the signature names supported by the generator. + * + * @return an IEnumerable containing recognised names. + */ + public IEnumerable SignatureAlgNames + { + get { return OcspUtilities.AlgNames; } + } + } +} |