/// <summary>
/// Takes in a hash function, and nonce provider, and optional entropy provider (only used for 'random' nonce)
/// </summary>
/// <param name="hashFunction"></param>
/// <param name="nonceProviderTypes"></param>
/// <param name="entropyProvider"></param>
/// <returns></returns>
public IDsaEcc GetInstanceForSignatures(HashFunction hashFunction, NonceProviderTypes nonceProviderTypes, IEntropyProvider entropyProvider = null)
{
var sha = _shaFactory.GetShaInstance(hashFunction);
var hmac = _hmacFactory.GetHmacInstance(hashFunction);
var nonceProvider = _nonceProviderFactory.GetNonceProvider(nonceProviderTypes, hmac, entropyProvider);
return(new EccDsa(sha, nonceProvider));
}
private IDrbg GetHashImplementation(DrbgParameters drbgParameters, IEntropyProvider iEntropyProvider)
{
var hashFunction = GetHashFunction(drbgParameters.Mode);
var sha = _shaFactory.GetShaInstance(hashFunction);
return(new DrbgHash(iEntropyProvider, sha, drbgParameters));
}
public ISsh GetSshInstance(HashFunction hash, Cipher cipher)
{
var sha = _shaFactory.GetShaInstance(hash);
var lengthTuple = GetIvKeyLengthFromCipher(cipher);
return(new Ssh(sha, lengthTuple.ivLength, lengthTuple.keyLength));
}
public KdfHmac(IHmacFactory hmacFactory, IShaFactory shaFactory, KdaOneStepAuxFunction auxFunction, bool useCounter)
{
UseCounter = useCounter;
HashFunction hashFunction = null;
switch (auxFunction)
{
case KdaOneStepAuxFunction.HMAC_SHA1:
hashFunction = new HashFunction(ModeValues.SHA1, DigestSizes.d160);
break;
case KdaOneStepAuxFunction.HMAC_SHA2_D224:
hashFunction = new HashFunction(ModeValues.SHA2, DigestSizes.d224);
break;
case KdaOneStepAuxFunction.HMAC_SHA2_D256:
hashFunction = new HashFunction(ModeValues.SHA2, DigestSizes.d256);
break;
case KdaOneStepAuxFunction.HMAC_SHA2_D384:
hashFunction = new HashFunction(ModeValues.SHA2, DigestSizes.d384);
break;
case KdaOneStepAuxFunction.HMAC_SHA2_D512:
hashFunction = new HashFunction(ModeValues.SHA2, DigestSizes.d512);
break;
case KdaOneStepAuxFunction.HMAC_SHA2_D512_T224:
hashFunction = new HashFunction(ModeValues.SHA2, DigestSizes.d512t224);
break;
case KdaOneStepAuxFunction.HMAC_SHA2_D512_T256:
hashFunction = new HashFunction(ModeValues.SHA2, DigestSizes.d512t256);
break;
case KdaOneStepAuxFunction.HMAC_SHA3_D224:
hashFunction = new HashFunction(ModeValues.SHA3, DigestSizes.d224);
break;
case KdaOneStepAuxFunction.HMAC_SHA3_D256:
hashFunction = new HashFunction(ModeValues.SHA3, DigestSizes.d256);
break;
case KdaOneStepAuxFunction.HMAC_SHA3_D384:
hashFunction = new HashFunction(ModeValues.SHA3, DigestSizes.d384);
break;
case KdaOneStepAuxFunction.HMAC_SHA3_D512:
hashFunction = new HashFunction(ModeValues.SHA3, DigestSizes.d512);
break;
default:
throw new ArgumentException(nameof(auxFunction));
}
_hmac = hmacFactory.GetHmacInstance(hashFunction);
_sha = shaFactory.GetShaInstance(hashFunction);
}
public void ShouldEncryptDecryptToSameValue(string label, KeyPair rsaKeyPair, HashFunction hashFunction)
{
var numberOfTimes = 512; // Arbitrary
var hash = _shaFactory.GetShaInstance(hashFunction);
_subject = new RsaOaep(hash, new Mgf(hash), new Rsa(new RsaVisitor()), _entropyProviderFactory);
var key = new BitString("CAFECAFEFACEFACE");
for (var i = 0; i < numberOfTimes; i++)
{
var secretEncrypted = _subject.Encrypt(rsaKeyPair.PubKey, key, null);
var secretDecrypted = _subject.Decrypt(rsaKeyPair, secretEncrypted.SharedSecretZ, null);
Assert.AreEqual(key, secretDecrypted.SharedSecretZ);
}
}
public IMaskFunction GetMaskInstance(PssMaskTypes maskType, HashFunction hashFunction = null)
{
switch (maskType)
{
case PssMaskTypes.MGF1:
var shaMgf = _shaFactory.GetShaInstance(hashFunction);
return(new Mgf1Mask(shaMgf));
case PssMaskTypes.SHAKE128:
var shake128 = _shaFactory.GetShaInstance(new HashFunction(ModeValues.SHAKE, DigestSizes.d128));
return(new ShakeMask(shake128));
case PssMaskTypes.SHAKE256:
var shake256 = _shaFactory.GetShaInstance(new HashFunction(ModeValues.SHAKE, DigestSizes.d256));
return(new ShakeMask(shake256));
default:
throw new ArgumentException($"Invalid {nameof(maskType)} provided");
}
}
public void TestCasesFromGhIssues(string label, ModeValues mode, DigestSizes digestSize, int keyLen, string zzHex, string otherInfoHex, string expectedHex)
{
var zz = new BitString(zzHex);
var otherInfo = new BitString(otherInfoHex);
var hashFunction = new HashFunction(mode, digestSize);
var sha = _factory.GetShaInstance(hashFunction);
var subject = new AnsiX942Concat(sha);
var param = new ConcatAns942Parameters
{
Zz = zz,
KeyLen = keyLen,
OtherInfo = otherInfo
};
var result = subject.DeriveKey(param);
Assert.True(result.Success);
Assert.AreEqual(new BitString(expectedHex).ToHex(), result.DerivedKey.ToHex());
}
public IAnsiX942 GetInstance(AnsiX942Types type, HashFunction hashFunction)
{
var sha = _shaFactory.GetShaInstance(hashFunction);
switch (type)
{
case AnsiX942Types.Concat:
return(new AnsiX942Concat(sha));
case AnsiX942Types.Der:
return(new AnsiX942Der(sha));
default:
throw new Exception("No ANSI x9.42 KDF type specified");
}
}
public IIkeV1 GetIkeV1Instance(AuthenticationMethods authMethods, HashFunction hash)
{
var sha = _shaFactory.GetShaInstance(hash);
var hmac = _hmacFactory.GetHmacInstance(hash);
switch (authMethods)
{
case AuthenticationMethods.Dsa:
return(new DsaIkeV1(hmac));
case AuthenticationMethods.Pke:
return(new PkeIkeV1(hmac, sha));
case AuthenticationMethods.Psk:
return(new PskIkeV1(hmac));
default:
throw new ArgumentException("No such authentication mode");
}
}
public void IsoIec9797Tests(ModeValues mode, DigestSizes digestSize, int macLength, string ascii, int count, string keyHex, string expectedHex)
{
var sha = _shaFactory.GetShaInstance(new HashFunction(mode, digestSize));
_subject = new NativeHmac(sha);
var key = new BitString(keyHex);
BitString message;
if (count == 0)
{
message = new BitString(Encoding.ASCII.GetBytes(ascii));
}
else
{
message = new BitString(Encoding.ASCII.GetBytes(ascii), count * 8);
}
var result = _subject.Generate(key, message, macLength);
var expected = new BitString(expectedHex, macLength);
Assert.AreEqual(expected.ToHex(), result.Mac.ToHex());
}
public void ShouldKdfCorrectly(
string label,
ModeValues modeValue,
DigestSizes digestSize,
int kdfSize,
BigInteger z,
BitString otherInfo,
BitString expectedDerivedKeyingMaterial
)
{
var sha = _shaFactory.GetShaInstance(new HashFunction(modeValue, digestSize));
_subject = new KdfSha(sha, true);
var result = _subject.DeriveKey(
new BitString(z),
kdfSize,
otherInfo,
null
);
Assert.That(result.Success);
Assert.AreEqual(expectedDerivedKeyingMaterial.ToHex(), result.DerivedKey.ToHex());
}
public IHmac GetHmacInstance(HashFunction hashFunction)
{
var sha = _iShaFactory.GetShaInstance(hashFunction);
return(new NativeHmac(sha));
}
private ISha GetSha(string hash)
{
var mapping = AlgorithmSpecificationToDomainMapping.GetMappingFromAlgorithm(hash);
return(_shaFactory.GetShaInstance(new HashFunction(mapping.shaMode, mapping.shaDigestSize)));
}
public IKdfOneStep GetInstance(KdaOneStepAuxFunction auxFunction, bool useCounter)
{
switch (auxFunction)
{
case KdaOneStepAuxFunction.SHA1:
return(new KdfSha(_shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA1, DigestSizes.d160)), useCounter));
case KdaOneStepAuxFunction.SHA2_D224:
return(new KdfSha(_shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA2, DigestSizes.d224)), useCounter));
case KdaOneStepAuxFunction.SHA2_D256:
return(new KdfSha(_shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA2, DigestSizes.d256)), useCounter));
case KdaOneStepAuxFunction.SHA2_D384:
return(new KdfSha(_shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA2, DigestSizes.d384)), useCounter));
case KdaOneStepAuxFunction.SHA2_D512:
return(new KdfSha(_shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA2, DigestSizes.d512)), useCounter));
case KdaOneStepAuxFunction.SHA2_D512_T224:
return(new KdfSha(_shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA2, DigestSizes.d512t224)), useCounter));
case KdaOneStepAuxFunction.SHA2_D512_T256:
return(new KdfSha(_shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA2, DigestSizes.d512t256)), useCounter));
case KdaOneStepAuxFunction.SHA3_D224:
return(new KdfSha(_shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA3, DigestSizes.d224)), useCounter));
case KdaOneStepAuxFunction.SHA3_D256:
return(new KdfSha(_shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA3, DigestSizes.d256)), useCounter));
case KdaOneStepAuxFunction.SHA3_D384:
return(new KdfSha(_shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA3, DigestSizes.d384)), useCounter));
case KdaOneStepAuxFunction.SHA3_D512:
return(new KdfSha(_shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA3, DigestSizes.d512)), useCounter));
case KdaOneStepAuxFunction.HMAC_SHA1:
case KdaOneStepAuxFunction.HMAC_SHA2_D224:
case KdaOneStepAuxFunction.HMAC_SHA2_D256:
case KdaOneStepAuxFunction.HMAC_SHA2_D384:
case KdaOneStepAuxFunction.HMAC_SHA2_D512:
case KdaOneStepAuxFunction.HMAC_SHA2_D512_T224:
case KdaOneStepAuxFunction.HMAC_SHA2_D512_T256:
case KdaOneStepAuxFunction.HMAC_SHA3_D224:
case KdaOneStepAuxFunction.HMAC_SHA3_D256:
case KdaOneStepAuxFunction.HMAC_SHA3_D384:
case KdaOneStepAuxFunction.HMAC_SHA3_D512:
return(new KdfHmac(_hmacFactory, _shaFactory, auxFunction, useCounter));
case KdaOneStepAuxFunction.KMAC_128:
return(new KdfKmac(_kmacFactory, 256, useCounter));
case KdaOneStepAuxFunction.KMAC_256:
return(new KdfKmac(_kmacFactory, 512, useCounter));
default:
throw new ArgumentException(nameof(auxFunction));
}
}
public IRsaOaep Get(KasHashAlg hashAlg)
{
ISha sha = null;
switch (hashAlg)
{
case KasHashAlg.SHA1:
sha = _shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA1, DigestSizes.d160));
break;
case KasHashAlg.SHA2_D224:
sha = _shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA2, DigestSizes.d224));
break;
case KasHashAlg.SHA2_D256:
sha = _shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA2, DigestSizes.d256));
break;
case KasHashAlg.SHA2_D384:
sha = _shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA2, DigestSizes.d384));
break;
case KasHashAlg.SHA2_D512:
sha = _shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA2, DigestSizes.d512));
break;
case KasHashAlg.SHA2_D512_T224:
sha = _shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA2, DigestSizes.d512t224));
break;
case KasHashAlg.SHA2_D512_T256:
sha = _shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA2, DigestSizes.d512t256));
break;
case KasHashAlg.SHA3_D224:
sha = _shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA3, DigestSizes.d224));
break;
case KasHashAlg.SHA3_D256:
sha = _shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA3, DigestSizes.d256));
break;
case KasHashAlg.SHA3_D384:
sha = _shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA3, DigestSizes.d384));
break;
case KasHashAlg.SHA3_D512:
sha = _shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA3, DigestSizes.d512));
break;
}
return(new RsaOaep(sha, new Mgf(sha), _rsa, _entropyFactory));
}
public IDsaFfc GetInstance(HashFunction hashFunction, EntropyProviderTypes entropyType = EntropyProviderTypes.Random)
{
return(new FfcDsa(_shaFactory.GetShaInstance(hashFunction), entropyType));
}
public ISnmp GetInstance()
{
return(new Snmp(_shaFactory.GetShaInstance(new HashFunction(ModeValues.SHA1, DigestSizes.d160))));
}
public IAnsiX963 GetInstance(HashFunction hashFunction)
{
var sha = _shaFactory.GetShaInstance(hashFunction);
return(new AnsiX963(sha));
}
public ITlsKdf_v1_3 GetInstance(HashFunctions hashFunction)
{
var hf = ShaAttributes.GetHashFunctionFromEnum(hashFunction);
return(new TlsKdfv13(_hkdfFactory.GetKdf(hf), _shaFactory.GetShaInstance(hf), hf.OutputLen));
}