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Diffstat (limited to 'crypto/src/cms/CMSSignedGenerator.cs')
| -rw-r--r-- | crypto/src/cms/CMSSignedGenerator.cs | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/crypto/src/cms/CMSSignedGenerator.cs b/crypto/src/cms/CMSSignedGenerator.cs new file mode 100644 index 000000000..f272c830e --- /dev/null +++ b/crypto/src/cms/CMSSignedGenerator.cs @@ -0,0 +1,261 @@ +using System; +using System.Collections; +using System.IO; + +using Org.BouncyCastle.Asn1; +using Org.BouncyCastle.Asn1.Cms; +using Org.BouncyCastle.Asn1.CryptoPro; +using Org.BouncyCastle.Asn1.Nist; +using Org.BouncyCastle.Asn1.Oiw; +using Org.BouncyCastle.Asn1.Pkcs; +using Org.BouncyCastle.Asn1.TeleTrust; +using Org.BouncyCastle.Asn1.X509; +using Org.BouncyCastle.Asn1.X9; +using Org.BouncyCastle.Crypto; +using Org.BouncyCastle.Crypto.Parameters; +using Org.BouncyCastle.Security; +using Org.BouncyCastle.Utilities; +using Org.BouncyCastle.Utilities.Collections; +using Org.BouncyCastle.Utilities.IO; +using Org.BouncyCastle.X509; +using Org.BouncyCastle.X509.Store; + +namespace Org.BouncyCastle.Cms +{ + public class CmsSignedGenerator + { + /** + * Default type for the signed data. + */ + public static readonly string Data = CmsObjectIdentifiers.Data.Id; + + public static readonly string DigestSha1 = OiwObjectIdentifiers.IdSha1.Id; + public static readonly string DigestSha224 = NistObjectIdentifiers.IdSha224.Id; + public static readonly string DigestSha256 = NistObjectIdentifiers.IdSha256.Id; + public static readonly string DigestSha384 = NistObjectIdentifiers.IdSha384.Id; + public static readonly string DigestSha512 = NistObjectIdentifiers.IdSha512.Id; + public static readonly string DigestMD5 = PkcsObjectIdentifiers.MD5.Id; + public static readonly string DigestGost3411 = CryptoProObjectIdentifiers.GostR3411.Id; + public static readonly string DigestRipeMD128 = TeleTrusTObjectIdentifiers.RipeMD128.Id; + public static readonly string DigestRipeMD160 = TeleTrusTObjectIdentifiers.RipeMD160.Id; + public static readonly string DigestRipeMD256 = TeleTrusTObjectIdentifiers.RipeMD256.Id; + + public static readonly string EncryptionRsa = PkcsObjectIdentifiers.RsaEncryption.Id; + public static readonly string EncryptionDsa = X9ObjectIdentifiers.IdDsaWithSha1.Id; + public static readonly string EncryptionECDsa = X9ObjectIdentifiers.ECDsaWithSha1.Id; + public static readonly string EncryptionRsaPss = PkcsObjectIdentifiers.IdRsassaPss.Id; + public static readonly string EncryptionGost3410 = CryptoProObjectIdentifiers.GostR3410x94.Id; + public static readonly string EncryptionECGost3410 = CryptoProObjectIdentifiers.GostR3410x2001.Id; + + private static readonly string EncryptionECDsaWithSha1 = X9ObjectIdentifiers.ECDsaWithSha1.Id; + private static readonly string EncryptionECDsaWithSha224 = X9ObjectIdentifiers.ECDsaWithSha224.Id; + private static readonly string EncryptionECDsaWithSha256 = X9ObjectIdentifiers.ECDsaWithSha256.Id; + private static readonly string EncryptionECDsaWithSha384 = X9ObjectIdentifiers.ECDsaWithSha384.Id; + private static readonly string EncryptionECDsaWithSha512 = X9ObjectIdentifiers.ECDsaWithSha512.Id; + + private static readonly ISet noParams = new HashSet(); + private static readonly IDictionary ecAlgorithms = Platform.CreateHashtable(); + + static CmsSignedGenerator() + { + noParams.Add(EncryptionDsa); +// noParams.Add(EncryptionECDsa); + noParams.Add(EncryptionECDsaWithSha1); + noParams.Add(EncryptionECDsaWithSha224); + noParams.Add(EncryptionECDsaWithSha256); + noParams.Add(EncryptionECDsaWithSha384); + noParams.Add(EncryptionECDsaWithSha512); + + ecAlgorithms.Add(DigestSha1, EncryptionECDsaWithSha1); + ecAlgorithms.Add(DigestSha224, EncryptionECDsaWithSha224); + ecAlgorithms.Add(DigestSha256, EncryptionECDsaWithSha256); + ecAlgorithms.Add(DigestSha384, EncryptionECDsaWithSha384); + ecAlgorithms.Add(DigestSha512, EncryptionECDsaWithSha512); + } + + internal IList _certs = Platform.CreateArrayList(); + internal IList _crls = Platform.CreateArrayList(); + internal IList _signers = Platform.CreateArrayList(); + internal IDictionary _digests = Platform.CreateHashtable(); + + protected readonly SecureRandom rand; + + protected CmsSignedGenerator() + : this(new SecureRandom()) + { + } + + /// <summary>Constructor allowing specific source of randomness</summary> + /// <param name="rand">Instance of <c>SecureRandom</c> to use.</param> + protected CmsSignedGenerator( + SecureRandom rand) + { + this.rand = rand; + } + + protected string GetEncOid( + AsymmetricKeyParameter key, + string digestOID) + { + string encOID = null; + + if (key is RsaKeyParameters) + { + if (!((RsaKeyParameters) key).IsPrivate) + throw new ArgumentException("Expected RSA private key"); + + encOID = EncryptionRsa; + } + else if (key is DsaPrivateKeyParameters) + { + if (!digestOID.Equals(DigestSha1)) + throw new ArgumentException("can't mix DSA with anything but SHA1"); + + encOID = EncryptionDsa; + } + else if (key is ECPrivateKeyParameters) + { + ECPrivateKeyParameters ecPrivKey = (ECPrivateKeyParameters) key; + string algName = ecPrivKey.AlgorithmName; + + if (algName == "ECGOST3410") + { + encOID = EncryptionECGost3410; + } + else + { + // TODO Should we insist on algName being one of "EC" or "ECDSA", as Java does? + encOID = (string) ecAlgorithms[digestOID]; + + if (encOID == null) + throw new ArgumentException("can't mix ECDSA with anything but SHA family digests"); + } + } + else if (key is Gost3410PrivateKeyParameters) + { + encOID = EncryptionGost3410; + } + else + { + throw new ArgumentException("Unknown algorithm in CmsSignedGenerator.GetEncOid"); + } + + return encOID; + } + + internal static AlgorithmIdentifier GetEncAlgorithmIdentifier( + DerObjectIdentifier encOid, + Asn1Encodable sigX509Parameters) + { + if (noParams.Contains(encOid.Id)) + { + return new AlgorithmIdentifier(encOid); + } + + return new AlgorithmIdentifier(encOid, sigX509Parameters); + } + + internal protected virtual IDictionary GetBaseParameters( + DerObjectIdentifier contentType, + AlgorithmIdentifier digAlgId, + byte[] hash) + { + IDictionary param = Platform.CreateHashtable(); + + if (contentType != null) + { + param[CmsAttributeTableParameter.ContentType] = contentType; + } + + param[CmsAttributeTableParameter.DigestAlgorithmIdentifier] = digAlgId; + param[CmsAttributeTableParameter.Digest] = hash.Clone(); + + return param; + } + + internal protected virtual Asn1Set GetAttributeSet( + Asn1.Cms.AttributeTable attr) + { + return attr == null + ? null + : new DerSet(attr.ToAsn1EncodableVector()); + } + + public void AddCertificates( + IX509Store certStore) + { + CollectionUtilities.AddRange(_certs, CmsUtilities.GetCertificatesFromStore(certStore)); + } + + public void AddCrls( + IX509Store crlStore) + { + CollectionUtilities.AddRange(_crls, CmsUtilities.GetCrlsFromStore(crlStore)); + } + + /** + * Add the attribute certificates contained in the passed in store to the + * generator. + * + * @param store a store of Version 2 attribute certificates + * @throws CmsException if an error occurse processing the store. + */ + public void AddAttributeCertificates( + IX509Store store) + { + try + { + foreach (IX509AttributeCertificate attrCert in store.GetMatches(null)) + { + _certs.Add(new DerTaggedObject(false, 2, + AttributeCertificate.GetInstance(Asn1Object.FromByteArray(attrCert.GetEncoded())))); + } + } + catch (Exception e) + { + throw new CmsException("error processing attribute certs", e); + } + } + + /** + * Add a store of precalculated signers to the generator. + * + * @param signerStore store of signers + */ + public void AddSigners( + SignerInformationStore signerStore) + { + foreach (SignerInformation o in signerStore.GetSigners()) + { + _signers.Add(o); + AddSignerCallback(o); + } + } + + /** + * Return a map of oids and byte arrays representing the digests calculated on the content during + * the last generate. + * + * @return a map of oids (as String objects) and byte[] representing digests. + */ + public IDictionary GetGeneratedDigests() + { + return Platform.CreateHashtable(_digests); + } + + internal virtual void AddSignerCallback( + SignerInformation si) + { + } + + internal static SignerIdentifier GetSignerIdentifier(X509Certificate cert) + { + return new SignerIdentifier(CmsUtilities.GetIssuerAndSerialNumber(cert)); + } + + internal static SignerIdentifier GetSignerIdentifier(byte[] subjectKeyIdentifier) + { + return new SignerIdentifier(new DerOctetString(subjectKeyIdentifier)); + } + } +} |