diff options
| -rw-r--r-- | crypto/src/pqc/crypto/utils/SubjectPublicKeyInfoFactory.cs | 151 |
1 files changed, 82 insertions, 69 deletions
diff --git a/crypto/src/pqc/crypto/utils/SubjectPublicKeyInfoFactory.cs b/crypto/src/pqc/crypto/utils/SubjectPublicKeyInfoFactory.cs index 39d437320..d9800165b 100644 --- a/crypto/src/pqc/crypto/utils/SubjectPublicKeyInfoFactory.cs +++ b/crypto/src/pqc/crypto/utils/SubjectPublicKeyInfoFactory.cs @@ -1,17 +1,14 @@ using System; using Org.BouncyCastle.Asn1; -using Org.BouncyCastle.Asn1.Pkcs; using Org.BouncyCastle.Asn1.X509; using Org.BouncyCastle.Crypto; +using Org.BouncyCastle.Math; using Org.BouncyCastle.Pqc.Asn1; -using Org.BouncyCastle.Pqc.Crypto.Bike; using Org.BouncyCastle.Pqc.Crypto.Cmce; using Org.BouncyCastle.Pqc.Crypto.Crystals.Dilithium; using Org.BouncyCastle.Pqc.Crypto.Crystals.Kyber; using Org.BouncyCastle.Pqc.Crypto.Falcon; -using Org.BouncyCastle.Pqc.Crypto.Hqc; -using Org.BouncyCastle.Pqc.Crypto.Lms; using Org.BouncyCastle.Pqc.Crypto.Picnic; using Org.BouncyCastle.Pqc.Crypto.Saber; using Org.BouncyCastle.Pqc.Crypto.Sike; @@ -20,127 +17,143 @@ using Org.BouncyCastle.Utilities; namespace Org.BouncyCastle.Pqc.Crypto.Utilities { + /// <summary> /// A factory to produce Public Key Info Objects. /// </summary> - public static class SubjectPublicKeyInfoFactory + public class SubjectPublicKeyInfoFactory { + private SubjectPublicKeyInfoFactory() + { + } + /// <summary> /// Create a Subject Public Key Info object for a given public key. /// </summary> /// <param name="publicKey">One of ElGammalPublicKeyParameters, DSAPublicKeyParameter, DHPublicKeyParameters, RsaKeyParameters or ECPublicKeyParameters</param> /// <returns>A subject public key info object.</returns> /// <exception cref="Exception">Throw exception if object provided is not one of the above.</exception> - public static SubjectPublicKeyInfo CreateSubjectPublicKeyInfo(AsymmetricKeyParameter publicKey) + public static SubjectPublicKeyInfo CreateSubjectPublicKeyInfo( + AsymmetricKeyParameter publicKey) { if (publicKey == null) throw new ArgumentNullException("publicKey"); if (publicKey.IsPrivate) throw new ArgumentException("Private key passed - public key expected.", "publicKey"); - - if (publicKey is LmsPublicKeyParameters lmsPublicKeyParameters) + + if (publicKey is SphincsPlusPublicKeyParameters) { - byte[] encoding = Composer.Compose().U32Str(1).Bytes(lmsPublicKeyParameters).Build(); + SphincsPlusPublicKeyParameters parameters = (SphincsPlusPublicKeyParameters)publicKey; - AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(PkcsObjectIdentifiers.IdAlgHssLmsHashsig); - return new SubjectPublicKeyInfo(algorithmIdentifier, new DerOctetString(encoding)); - } - if (publicKey is HssPublicKeyParameters hssPublicKeyParameters) - { - int L = hssPublicKeyParameters.L; - byte[] encoding = Composer.Compose().U32Str(L).Bytes(hssPublicKeyParameters.LmsPublicKey).Build(); + byte[] encoding = parameters.GetEncoded(); - AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(PkcsObjectIdentifiers.IdAlgHssLmsHashsig); + AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(PqcUtilities.SphincsPlusOidLookup(parameters.Parameters)); return new SubjectPublicKeyInfo(algorithmIdentifier, new DerOctetString(encoding)); } - if (publicKey is SphincsPlusPublicKeyParameters sphincsPlusPublicKeyParameters) + if (publicKey is CmcePublicKeyParameters) { - byte[] encoding = sphincsPlusPublicKeyParameters.GetEncoded(); + CmcePublicKeyParameters key = (CmcePublicKeyParameters)publicKey; - AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier( - PqcUtilities.SphincsPlusOidLookup(sphincsPlusPublicKeyParameters.Parameters)); - return new SubjectPublicKeyInfo(algorithmIdentifier, new DerOctetString(encoding)); - } - if (publicKey is CmcePublicKeyParameters cmcePublicKeyParameters) - { - byte[] encoding = cmcePublicKeyParameters.GetEncoded(); + byte[] encoding = key.GetEncoded(); - AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier( - PqcUtilities.McElieceOidLookup(cmcePublicKeyParameters.Parameters)); + AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(PqcUtilities.McElieceOidLookup(key.Parameters)); // https://datatracker.ietf.org/doc/draft-uni-qsckeys/ return new SubjectPublicKeyInfo(algorithmIdentifier, new CmcePublicKey(encoding)); } - if (publicKey is SaberPublicKeyParameters saberPublicKeyParameters) + if (publicKey is SaberPublicKeyParameters) { - byte[] encoding = saberPublicKeyParameters.GetEncoded(); + SaberPublicKeyParameters parameters = (SaberPublicKeyParameters)publicKey; + + byte[] encoding = parameters.GetEncoded(); - AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier( - PqcUtilities.SaberOidLookup(saberPublicKeyParameters.Parameters)); + AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(PqcUtilities.SaberOidLookup(parameters.Parameters)); // https://datatracker.ietf.org/doc/draft-uni-qsckeys/ return new SubjectPublicKeyInfo(algorithmIdentifier, new DerSequence(new DerOctetString(encoding))); } - if (publicKey is PicnicPublicKeyParameters picnicPublicKeyParameters) + if (publicKey is PicnicPublicKeyParameters) { - byte[] encoding = picnicPublicKeyParameters.GetEncoded(); + PicnicPublicKeyParameters parameters = (PicnicPublicKeyParameters)publicKey; - AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier( - PqcUtilities.PicnicOidLookup(picnicPublicKeyParameters.Parameters)); + byte[] encoding = parameters.GetEncoded(); + + AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(PqcUtilities.PicnicOidLookup(parameters.Parameters)); return new SubjectPublicKeyInfo(algorithmIdentifier, new DerOctetString(encoding)); } - if (publicKey is SikePublicKeyParameters sikePublicKeyParameters) + if (publicKey is SikePublicKeyParameters) { - byte[] encoding = sikePublicKeyParameters.GetEncoded(); + SikePublicKeyParameters parameters = (SikePublicKeyParameters)publicKey; + + byte[] encoding = parameters.GetEncoded(); - AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier( - PqcUtilities.SikeOidLookup(sikePublicKeyParameters.Parameters)); + AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(PqcUtilities.SikeOidLookup(parameters.Parameters)); return new SubjectPublicKeyInfo(algorithmIdentifier, new DerOctetString(encoding)); } - if (publicKey is FalconPublicKeyParameters falconPublicKeyParameters) + if (publicKey is FalconPublicKeyParameters) { - byte[] encoding = falconPublicKeyParameters.GetEncoded(); + FalconPublicKeyParameters parameters = (FalconPublicKeyParameters)publicKey; + + byte[] encoding = parameters.GetEncoded(); + AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(PqcUtilities.FalconOidLookup(parameters.Parameters)); - AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier( - PqcUtilities.FalconOidLookup(falconPublicKeyParameters.Parameters)); return new SubjectPublicKeyInfo(algorithmIdentifier, new DerSequence(new DerOctetString(encoding))); } - if (publicKey is KyberPublicKeyParameters kyberPublicKeyParameters) + if (publicKey is KyberPublicKeyParameters) { - AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier( - PqcUtilities.KyberOidLookup(kyberPublicKeyParameters.Parameters)); + KyberPublicKeyParameters parameters = (KyberPublicKeyParameters)publicKey; + + AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(PqcUtilities.KyberOidLookup(parameters.Parameters)); Asn1EncodableVector v = new Asn1EncodableVector(); - v.Add(new DerOctetString(kyberPublicKeyParameters.T)); - v.Add(new DerOctetString(kyberPublicKeyParameters.Rho)); + v.Add(new DerOctetString(parameters.T)); + v.Add(new DerOctetString(parameters.Rho)); return new SubjectPublicKeyInfo(algorithmIdentifier, new DerSequence(v)); } - if (publicKey is DilithiumPublicKeyParameters dilithiumPublicKeyParameters) + if (publicKey is DilithiumPublicKeyParameters) { - AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier( - PqcUtilities.DilithiumOidLookup(dilithiumPublicKeyParameters.Parameters)); - - return new SubjectPublicKeyInfo(algorithmIdentifier, - new DerOctetString(Arrays.Concatenate(dilithiumPublicKeyParameters.Rho, dilithiumPublicKeyParameters.T1))); - } - if (publicKey is BikePublicKeyParameters bikePublicKeyParameters) - { - byte[] encoding = bikePublicKeyParameters.GetEncoded(); - AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier( - PqcUtilities.BikeOidLookup(bikePublicKeyParameters.Parameters)); + DilithiumPublicKeyParameters parameters = (DilithiumPublicKeyParameters)publicKey; - return new SubjectPublicKeyInfo(algorithmIdentifier, new DerOctetString(encoding)); + AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(PqcUtilities.DilithiumOidLookup(parameters.Parameters)); + Asn1EncodableVector v = new Asn1EncodableVector(); + v.Add(new DerOctetString(parameters.Rho)); + v.Add(new DerOctetString(parameters.T1)); + return new SubjectPublicKeyInfo(algorithmIdentifier, new DerSequence(v)); } - if (publicKey is HqcPublicKeyParameters hqcPublicKeyParameters) + + throw new ArgumentException("Class provided no convertible: " + Platform.GetTypeName(publicKey)); + + } + + private static void ExtractBytes( + byte[] encKey, + int offset, + BigInteger bI) + { + byte[] val = bI.ToByteArray(); + int n = (bI.BitLength + 7) / 8; + + for (int i = 0; i < n; ++i) { - byte[] encoding = hqcPublicKeyParameters.GetEncoded(); + encKey[offset + i] = val[val.Length - 1 - i]; + } + } - AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier( - PqcUtilities.HqcOidLookup(hqcPublicKeyParameters.Parameters)); - return new SubjectPublicKeyInfo(algorithmIdentifier, new DerOctetString(encoding)); + private static void ExtractBytes(byte[] encKey, int size, int offSet, BigInteger bI) + { + byte[] val = bI.ToByteArray(); + if (val.Length < size) + { + byte[] tmp = new byte[size]; + Array.Copy(val, 0, tmp, tmp.Length - val.Length, val.Length); + val = tmp; } - throw new ArgumentException("Class provided no convertible: " + Platform.GetTypeName(publicKey)); + for (int i = 0; i != size; i++) + { + encKey[offSet + i] = val[val.Length - 1 - i]; + } } + } -} +} \ No newline at end of file |