init commit

2025-10-09 09:57:24 +09:00
commit 4d551bd74f
6636 changed files with 1218703 additions and 0 deletions
--- a/output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Crypto/Prng/SP800SecureRandomBuilder.cs
+++ b/output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Crypto/Prng/SP800SecureRandomBuilder.cs
@@ -0,0 +1,142 @@
+using Org.BouncyCastle.Crypto.Prng.Drbg;
+using Org.BouncyCastle.Security;
+
+namespace Org.BouncyCastle.Crypto.Prng;
+
+public class SP800SecureRandomBuilder
+{
+	private class HashDrbgProvider : IDrbgProvider
+	{
+		private readonly IDigest mDigest;
+
+		private readonly byte[] mNonce;
+
+		private readonly byte[] mPersonalizationString;
+
+		private readonly int mSecurityStrength;
+
+		public HashDrbgProvider(IDigest digest, byte[] nonce, byte[] personalizationString, int securityStrength)
+		{
+			mDigest = digest;
+			mNonce = nonce;
+			mPersonalizationString = personalizationString;
+			mSecurityStrength = securityStrength;
+		}
+
+		public ISP80090Drbg Get(IEntropySource entropySource)
+		{
+			return new HashSP800Drbg(mDigest, mSecurityStrength, entropySource, mPersonalizationString, mNonce);
+		}
+	}
+
+	private class HMacDrbgProvider : IDrbgProvider
+	{
+		private readonly IMac mHMac;
+
+		private readonly byte[] mNonce;
+
+		private readonly byte[] mPersonalizationString;
+
+		private readonly int mSecurityStrength;
+
+		public HMacDrbgProvider(IMac hMac, byte[] nonce, byte[] personalizationString, int securityStrength)
+		{
+			mHMac = hMac;
+			mNonce = nonce;
+			mPersonalizationString = personalizationString;
+			mSecurityStrength = securityStrength;
+		}
+
+		public ISP80090Drbg Get(IEntropySource entropySource)
+		{
+			return new HMacSP800Drbg(mHMac, mSecurityStrength, entropySource, mPersonalizationString, mNonce);
+		}
+	}
+
+	private class CtrDrbgProvider : IDrbgProvider
+	{
+		private readonly IBlockCipher mBlockCipher;
+
+		private readonly int mKeySizeInBits;
+
+		private readonly byte[] mNonce;
+
+		private readonly byte[] mPersonalizationString;
+
+		private readonly int mSecurityStrength;
+
+		public CtrDrbgProvider(IBlockCipher blockCipher, int keySizeInBits, byte[] nonce, byte[] personalizationString, int securityStrength)
+		{
+			mBlockCipher = blockCipher;
+			mKeySizeInBits = keySizeInBits;
+			mNonce = nonce;
+			mPersonalizationString = personalizationString;
+			mSecurityStrength = securityStrength;
+		}
+
+		public ISP80090Drbg Get(IEntropySource entropySource)
+		{
+			return new CtrSP800Drbg(mBlockCipher, mKeySizeInBits, mSecurityStrength, entropySource, mPersonalizationString, mNonce);
+		}
+	}
+
+	private readonly SecureRandom mRandom;
+
+	private readonly IEntropySourceProvider mEntropySourceProvider;
+
+	private byte[] mPersonalizationString = null;
+
+	private int mSecurityStrength = 256;
+
+	private int mEntropyBitsRequired = 256;
+
+	public SP800SecureRandomBuilder()
+		: this(new SecureRandom(), predictionResistant: false)
+	{
+	}
+
+	public SP800SecureRandomBuilder(SecureRandom entropySource, bool predictionResistant)
+	{
+		mRandom = entropySource;
+		mEntropySourceProvider = new BasicEntropySourceProvider(entropySource, predictionResistant);
+	}
+
+	public SP800SecureRandomBuilder(IEntropySourceProvider entropySourceProvider)
+	{
+		mRandom = null;
+		mEntropySourceProvider = entropySourceProvider;
+	}
+
+	public SP800SecureRandomBuilder SetPersonalizationString(byte[] personalizationString)
+	{
+		mPersonalizationString = personalizationString;
+		return this;
+	}
+
+	public SP800SecureRandomBuilder SetSecurityStrength(int securityStrength)
+	{
+		mSecurityStrength = securityStrength;
+		return this;
+	}
+
+	public SP800SecureRandomBuilder SetEntropyBitsRequired(int entropyBitsRequired)
+	{
+		mEntropyBitsRequired = entropyBitsRequired;
+		return this;
+	}
+
+	public SP800SecureRandom BuildHash(IDigest digest, byte[] nonce, bool predictionResistant)
+	{
+		return new SP800SecureRandom(mRandom, mEntropySourceProvider.Get(mEntropyBitsRequired), new HashDrbgProvider(digest, nonce, mPersonalizationString, mSecurityStrength), predictionResistant);
+	}
+
+	public SP800SecureRandom BuildCtr(IBlockCipher cipher, int keySizeInBits, byte[] nonce, bool predictionResistant)
+	{
+		return new SP800SecureRandom(mRandom, mEntropySourceProvider.Get(mEntropyBitsRequired), new CtrDrbgProvider(cipher, keySizeInBits, nonce, mPersonalizationString, mSecurityStrength), predictionResistant);
+	}
+
+	public SP800SecureRandom BuildHMac(IMac hMac, byte[] nonce, bool predictionResistant)
+	{
+		return new SP800SecureRandom(mRandom, mEntropySourceProvider.Get(mEntropyBitsRequired), new HMacDrbgProvider(hMac, nonce, mPersonalizationString, mSecurityStrength), predictionResistant);
+	}
+}