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572 lines
22 KiB
572 lines
22 KiB
namespace com.hitrust.Security.Cryptography
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{
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using com.hitrust.Security;
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using System;
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using System.Runtime.InteropServices;
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using System.Security.Cryptography;
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using System.Text;
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internal sealed class SymmetricKey : IDisposable
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{
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private static readonly byte[] ExponentOfOne = new byte[] {
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7, 2, 0, 0, 0, 0xa4, 0, 0, 0x52, 0x53, 0x41, 50, 0, 4, 0, 0,
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1, 0, 0, 0, 0x4b, 0x59, 0x4e, 0x26, 0xd0, 90, 0x33, 11, 0xbd, 0x5d, 0x44, 0x53,
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0x19, 0xa3, 0x74, 0x8a, 0x1c, 0x90, 0x71, 0x75, 8, 0x41, 0x19, 0xf4, 0xbc, 0x92, 0x23, 4,
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0x26, 0x67, 0x8d, 190, 0xe4, 0x6f, 0x74, 0x71, 0x47, 0x60, 0x60, 0x55, 0x1f, 0x72, 0x20, 0x79,
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0xf2, 0x21, 0xab, 0x91, 0xc4, 0xc9, 0x5c, 180, 0x89, 0x67, 0x52, 0x10, 0x9c, 0x71, 0x52, 0x7b,
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0xd4, 0x42, 0xae, 14, 0x93, 0xa6, 0xaf, 0x8d, 0x3a, 0x61, 0x70, 0x41, 0x98, 0xc3, 0x58, 220,
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0xcf, 0x4c, 0xef, 0x3e, 0xc6, 0xf3, 0xe0, 180, 0xcd, 0xfb, 0xec, 0x81, 11, 0x7a, 0x75, 0x29,
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0x7a, 190, 0x40, 0xf6, 0x4a, 0x3f, 0x40, 0xb7, 0x43, 240, 0x45, 0x3f, 150, 0xf1, 0x73, 0x2f,
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0x71, 0xee, 0xa7, 0x70, 0x4d, 0xf9, 0x63, 0xb8, 0x52, 0x4c, 0xf1, 0x18, 0xf3, 60, 0x21, 0x13,
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0x6a, 0x9a, 0x85, 0xb7, 0xa1, 0xfd, 0xb6, 0xa4, 0xf1, 0xeb, 3, 0xd6, 0x86, 5, 0x6a, 0x63,
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0x93, 0xb2, 0xe7, 0xf9, 0x2a, 0x77, 9, 0xe4, 12, 0x90, 0x2d, 0x6a, 0xa2, 0xcd, 0x37, 11,
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0xc0, 0xb6, 0x1c, 150, 0xc3, 0xa7, 0x57, 0xb1, 0x77, 0xf9, 0x55, 0x11, 0x8f, 0x44, 0x8d, 0x77,
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0x31, 0xa7, 0x45, 0xe0, 0x8e, 0x42, 13, 0xe4, 7, 0x53, 0xf3, 0x5c, 0x8b, 0xc7, 0xd7, 0xb8,
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100, 0x1f, 0xc0, 0xea, 0x6b, 0xf7, 0x9c, 0x91, 0x19, 0xad, 0x79, 0xe9, 0xde, 0xc3, 0x45, 0x66,
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0xed, 0x3e, 30, 0x90, 0x40, 0x26, 0x8b, 1, 0x7f, 0xce, 5, 0xda, 0x97, 0x8b, 0xf8, 0x47,
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0x3f, 0x4f, 0x74, 0xf2, 0x6d, 0x1f, 0x16, 0xd3, 0x25, 0x57, 0x2d, 0x30, 0x6f, 60, 0xe2, 0x41,
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0x86, 0xc1, 0xc7, 0x33, 1, 0x54, 3, 5, 0xa4, 0x58, 0xcc, 0x88, 0x9c, 0x8d, 0x65, 0x5e,
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2, 0x5c, 0x22, 200, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0xba, 0xf6, 0x8f, 0x2a, 0x9a, 0x4c, 0x3d, 210, 0xba, 0xd8, 0x77, 0x59,
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0x41, 0x8a, 0xed, 0x3d, 130, 0x24, 6, 0xc1, 0x37, 0x79, 0x81, 5, 0xfb, 0x9c, 0x6c, 0x15,
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190, 0x44, 0x5c, 0xb5, 0x16, 4, 0xc4, 0x4e, 0x9d, 0x89, 0xef, 0xf1, 0x15, 0x26, 0x19, 0x16,
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0x3e, 0xdd, 0xac, 0x4f, 0xe1, 170, 0x44, 0x7b, 160, 0xc5, 0xe9, 0x93, 0xc1, 0x34, 0x15, 0x67,
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0x69, 0x2d, 0xc3, 0x83, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0
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};
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private int m_ExponentOfOne;
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private int m_Handle;
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private bool m_OwnsProvider;
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private PaddingMode m_PaddingMode;
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private int m_Provider;
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private SymmetricKey(CryptoProvider provider) : this(false)
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{
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this.m_Provider = 0;
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if (((SspiProvider.CryptAcquireContext(ref this.m_Provider, IntPtr.Zero, null, (int) provider, 8) == 0) && (Marshal.GetLastWin32Error() == -2146893809)) && (SspiProvider.CryptAcquireContext(ref this.m_Provider, IntPtr.Zero, null, (int) provider, 0) == 0))
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{
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throw new SecurityException("Cannot acquire crypto service provider.");
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}
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this.m_ExponentOfOne = this.CreateExponentOfOneKey();
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this.m_PaddingMode = PaddingMode.None;
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}
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private SymmetricKey(bool ownsProvider)
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{
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this.m_OwnsProvider = ownsProvider;
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}
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public SymmetricKey(CryptoProvider provider, CryptoAlgorithm algorithm) : this(provider)
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{
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this.m_Handle = 0;
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if (SspiProvider.CryptGenKey(this.m_Provider, new IntPtr((int) algorithm), 1, ref this.m_Handle) == 0)
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{
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throw new SecurityException("Cannot generate session key.");
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}
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}
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public SymmetricKey(CryptoProvider provider, CryptoAlgorithm algorithm, byte[] buffer) : this(provider)
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{
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if (buffer == null)
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{
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throw new ArgumentNullException();
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}
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this.m_Handle = this.KeyFromBytes(this.m_Provider, algorithm, buffer);
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}
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internal SymmetricKey(int provider, int key, bool ownsProvider) : this(ownsProvider)
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{
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if ((key == 0) || (provider == 0))
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{
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throw new ArgumentNullException();
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}
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this.m_Provider = provider;
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this.m_Handle = key;
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this.m_PaddingMode = PaddingMode.None;
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}
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private int CreateDynamicExponentOfOneKey()
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{
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int phKey = 0;
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int pdwDataLen = 0;
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IntPtr zero = IntPtr.Zero;
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try
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{
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if (SspiProvider.CryptGenKey(this.m_Provider, new IntPtr(1), 1, ref phKey) == 0)
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{
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throw new SecurityException("Cannot generate key pair.");
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}
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if (SspiProvider.CryptExportKey(phKey, 0, 7, 0, IntPtr.Zero, ref pdwDataLen) == 0)
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{
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throw new SecurityException("Cannot export generated key.");
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}
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zero = Marshal.AllocHGlobal(pdwDataLen);
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if (SspiProvider.CryptExportKey(phKey, 0, 7, 0, zero, ref pdwDataLen) == 0)
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{
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throw new SecurityException("Cannot export generated key.");
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}
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SspiProvider.CryptDestroyKey(phKey);
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phKey = 0;
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int num3 = Marshal.ReadInt32(zero, 12);
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int ofs = 0x10;
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for (int i = 0; i < 4; i++)
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{
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if (i == 0)
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{
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Marshal.WriteByte(zero, ofs, 1);
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}
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else
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{
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Marshal.WriteByte(zero, ofs + i, 0);
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}
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}
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ofs += 4;
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ofs += num3 / 8;
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ofs += num3 / 0x10;
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ofs += num3 / 0x10;
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for (int j = 0; j < (num3 / 0x10); j++)
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{
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if (j == 0)
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{
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Marshal.WriteByte(zero, ofs, 1);
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}
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else
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{
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Marshal.WriteByte(zero, ofs + j, 0);
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}
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}
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ofs += num3 / 0x10;
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for (int k = 0; k < (num3 / 0x10); k++)
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{
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if (k == 0)
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{
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Marshal.WriteByte(zero, ofs, 1);
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}
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else
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{
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Marshal.WriteByte(zero, ofs + k, 0);
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}
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}
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ofs += num3 / 0x10;
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ofs += num3 / 0x10;
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for (int m = 0; m < (num3 / 8); m++)
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{
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if (m == 0)
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{
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Marshal.WriteByte(zero, ofs, 1);
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}
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else
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{
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Marshal.WriteByte(zero, ofs + m, 0);
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}
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}
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if (SspiProvider.CryptImportKey(this.m_Provider, zero, pdwDataLen, 0, 1, ref phKey) == 0)
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{
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throw new SecurityException("Could not import modified key.");
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}
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}
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catch (Exception exception)
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{
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if (phKey != 0)
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{
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SspiProvider.CryptDestroyKey(phKey);
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}
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throw exception;
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}
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finally
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{
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if (zero != IntPtr.Zero)
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{
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Marshal.FreeHGlobal(zero);
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}
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}
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return phKey;
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}
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private int CreateExponentOfOneKey()
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{
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try
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{
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return this.CreateStaticExponentOfOneKey();
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}
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catch
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{
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return this.CreateDynamicExponentOfOneKey();
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}
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}
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private int CreateStaticExponentOfOneKey()
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{
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int phKey = 0;
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if (SspiProvider.CryptImportKey(this.m_Provider, ExponentOfOne, ExponentOfOne.Length, 0, 1, ref phKey) == 0)
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{
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throw new SecurityException("Could not import modified key.");
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}
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return phKey;
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}
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public void Dispose()
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{
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if (this.m_Handle != 0)
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{
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SspiProvider.CryptDestroyKey(this.m_Handle);
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}
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if (this.m_ExponentOfOne != 0)
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{
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SspiProvider.CryptDestroyKey(this.m_ExponentOfOne);
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}
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if (this.m_OwnsProvider && (this.m_Provider != 0))
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{
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SspiProvider.CryptReleaseContext(this.m_Provider, 0);
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}
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this.m_Handle = this.m_ExponentOfOne = this.m_Provider = 0;
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try
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{
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GC.SuppressFinalize(this);
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}
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catch
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{
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}
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}
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~SymmetricKey()
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{
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this.Dispose();
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}
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private int GetPaddingMode(PaddingMode mode)
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{
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if (mode == PaddingMode.PKCS7)
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{
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return 1;
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}
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return 3;
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}
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private int KeyFromBytes(int provider, CryptoAlgorithm algorithm, byte[] key)
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{
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int dwFlags = 1;
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int pbData = 0;
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int num4 = 0;
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int ofs = 0;
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int phKey = 0;
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int num8 = 0;
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IntPtr algid = new IntPtr((int) algorithm);
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IntPtr zero = IntPtr.Zero;
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IntPtr ptr = IntPtr.Zero;
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IntPtr ptr4 = IntPtr.Zero;
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try
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{
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int size;
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bool flag = false;
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ptr4 = Marshal.AllocHGlobal((int) (0x54 + IntPtr.Size));
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do
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{
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size = 0x54 + IntPtr.Size;
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if (SspiProvider.CryptGetProvParam(provider, 0x16, ptr4, ref size, dwFlags) == 0)
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{
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break;
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}
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dwFlags = 0;
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if (Marshal.ReadIntPtr(ptr4) == algid)
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{
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flag = true;
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}
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}
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while (!flag);
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if (!flag)
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{
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throw new SecurityException("CSP does not support selected algorithm.");
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}
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if (SspiProvider.CryptGenKey(provider, algid, 0, ref phKey) == 0)
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{
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throw new SecurityException("Cannot generate temporary key.");
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}
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size = 4;
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if (SspiProvider.CryptGetKeyParam(phKey, 9, ref pbData, ref size, 0) == 0)
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{
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throw new SecurityException("Cannot retrieve key parameters.");
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}
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if ((key.Length * 8) > pbData)
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{
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throw new SecurityException("Key too big.");
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}
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size = IntPtr.Size;
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if (SspiProvider.CryptGetKeyParam(this.m_ExponentOfOne, 7, ref zero, ref size, 0) == 0)
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{
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throw new SecurityException("Unable to get the private key's algorithm.");
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}
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size = 4;
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if (SspiProvider.CryptGetKeyParam(this.m_ExponentOfOne, 9, ref num4, ref size, 0) == 0)
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{
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throw new SecurityException("Unable to get the key length.");
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}
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int cb = (((num4 / 8) + IntPtr.Size) + 4) + IntPtr.Size;
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ptr = Marshal.AllocHGlobal(cb);
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PUBLICKEYSTRUC structure = new PUBLICKEYSTRUC {
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bType = 1,
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bVersion = 2,
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reserved = 0,
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aiKeyAlg = algid
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};
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Marshal.StructureToPtr(structure, ptr, false);
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Marshal.WriteIntPtr(ptr, ofs = Marshal.SizeOf(structure), zero);
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ofs += IntPtr.Size;
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for (int i = 0; i < key.Length; i++)
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{
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Marshal.WriteByte(ptr, ((ofs + key.Length) - i) - 1, key[i]);
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}
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size = cb - ((((IntPtr.Size + IntPtr.Size) + 4) + key.Length) + 3);
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ofs += key.Length + 1;
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if (SspiProvider.CryptGenRandom(provider, size, new IntPtr(ptr.ToInt64() + ofs)) == 0)
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{
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throw new SecurityException("Could not generate random data.");
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}
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for (int j = 0; j < size; j++)
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{
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if (Marshal.ReadByte(ptr, ofs) == 0)
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{
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Marshal.WriteByte(ptr, ofs, 1);
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}
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ofs++;
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}
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Marshal.WriteByte(ptr, cb - 2, 2);
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if (SspiProvider.CryptImportKey(provider, ptr, cb, this.m_ExponentOfOne, 1, ref num8) == 0)
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{
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throw new SecurityException("Cannot import key [key has right size?].");
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}
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}
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finally
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{
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if (ptr4 != IntPtr.Zero)
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{
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Marshal.FreeHGlobal(ptr4);
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}
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if (phKey != 0)
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{
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SspiProvider.CryptDestroyKey(phKey);
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}
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if (ptr != IntPtr.Zero)
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{
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Marshal.FreeHGlobal(ptr);
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}
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}
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return num8;
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}
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public byte[] ToBytes()
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{
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byte[] buffer2;
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if (this.m_Handle == 0)
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{
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throw new ObjectDisposedException(base.GetType().FullName);
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}
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IntPtr zero = IntPtr.Zero;
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try
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{
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int pdwDataLen = 0;
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if (SspiProvider.CryptExportKey(this.m_Handle, this.m_ExponentOfOne, 1, 0, IntPtr.Zero, ref pdwDataLen) == 0)
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{
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throw new SecurityException("Cannot export key.");
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}
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zero = Marshal.AllocHGlobal(pdwDataLen);
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if (SspiProvider.CryptExportKey(this.m_Handle, this.m_ExponentOfOne, 1, 0, zero, ref pdwDataLen) == 0)
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{
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throw new SecurityException("Cannot export key.");
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}
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int num2 = 4;
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int pbData = 0;
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if (SspiProvider.CryptGetKeyParam(this.m_Handle, 9, ref pbData, ref num2, 0) == 0)
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{
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throw new SecurityException("Cannot retrieve key parameters.");
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}
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pbData /= 8;
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byte[] destination = new byte[pbData];
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int num4 = 4 + IntPtr.Size;
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num4 += IntPtr.Size;
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Marshal.Copy(new IntPtr(zero.ToInt64() + num4), destination, 0, destination.Length);
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Array.Reverse(destination);
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buffer2 = destination;
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}
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finally
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{
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if (zero != IntPtr.Zero)
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{
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Marshal.FreeHGlobal(zero);
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}
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}
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return buffer2;
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}
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public override string ToString()
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{
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if (this.m_Handle == 0)
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{
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throw new ObjectDisposedException(base.GetType().FullName);
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}
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byte[] buffer = this.ToBytes();
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StringBuilder builder = new StringBuilder(buffer.Length * 2);
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for (int i = 0; i < buffer.Length; i++)
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{
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builder.Append(buffer[i].ToString("X2"));
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}
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return builder.ToString();
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}
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public int FeedbackSize
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{
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get
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{
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if (this.m_Handle == 0)
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{
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throw new ObjectDisposedException(base.GetType().FullName);
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}
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int pbData = 0;
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int pdwDataLen = 4;
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if (SspiProvider.CryptGetKeyParam(this.m_Handle, 5, ref pbData, ref pdwDataLen, 0) == 0)
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{
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throw new CryptographicException("Could not get the feedback size.");
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}
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return pbData;
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}
|
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set
|
|
{
|
|
if (this.m_Handle == 0)
|
|
{
|
|
throw new ObjectDisposedException(base.GetType().FullName);
|
|
}
|
|
if (SspiProvider.CryptSetKeyParam(this.m_Handle, 5, ref value, 0) == 0)
|
|
{
|
|
throw new CryptographicException("Unable to set the feedback size.");
|
|
}
|
|
}
|
|
}
|
|
|
|
public int Handle
|
|
{
|
|
get
|
|
{
|
|
if (this.m_Handle == 0)
|
|
{
|
|
throw new ObjectDisposedException(base.GetType().FullName);
|
|
}
|
|
return this.m_Handle;
|
|
}
|
|
}
|
|
|
|
public byte[] IV
|
|
{
|
|
get
|
|
{
|
|
if (this.m_Handle == 0)
|
|
{
|
|
throw new ObjectDisposedException(base.GetType().FullName);
|
|
}
|
|
int pdwDataLen = 0;
|
|
if (SspiProvider.CryptGetKeyParam(this.m_Handle, 1, (byte[]) null, ref pdwDataLen, 0) == 0)
|
|
{
|
|
throw new CryptographicException("Could not get the IV.");
|
|
}
|
|
byte[] pbData = new byte[pdwDataLen];
|
|
if (SspiProvider.CryptGetKeyParam(this.m_Handle, 1, pbData, ref pdwDataLen, 0) == 0)
|
|
{
|
|
throw new CryptographicException("Could not get the IV.");
|
|
}
|
|
return pbData;
|
|
}
|
|
set
|
|
{
|
|
if (this.m_Handle == 0)
|
|
{
|
|
throw new ObjectDisposedException(base.GetType().FullName);
|
|
}
|
|
if (value == null)
|
|
{
|
|
throw new ArgumentNullException();
|
|
}
|
|
if (SspiProvider.CryptSetKeyParam(this.m_Handle, 1, value, 0) == 0)
|
|
{
|
|
throw new CryptographicException("Unable to set the initialization vector.");
|
|
}
|
|
}
|
|
}
|
|
|
|
public CipherMode Mode
|
|
{
|
|
get
|
|
{
|
|
if (this.m_Handle == 0)
|
|
{
|
|
throw new ObjectDisposedException(base.GetType().FullName);
|
|
}
|
|
int pbData = 0;
|
|
int pdwDataLen = 4;
|
|
if (SspiProvider.CryptGetKeyParam(this.m_Handle, 4, ref pbData, ref pdwDataLen, 0) == 0)
|
|
{
|
|
throw new CryptographicException("Could not get the cipher mode.");
|
|
}
|
|
return (CipherMode) pbData;
|
|
}
|
|
set
|
|
{
|
|
if (this.m_Handle == 0)
|
|
{
|
|
throw new ObjectDisposedException(base.GetType().FullName);
|
|
}
|
|
int pbData = (int) value;
|
|
if (SspiProvider.CryptSetKeyParam(this.m_Handle, 4, ref pbData, 0) == 0)
|
|
{
|
|
throw new CryptographicException("Unable to set the cipher mode.");
|
|
}
|
|
}
|
|
}
|
|
|
|
public PaddingMode Padding
|
|
{
|
|
get
|
|
{
|
|
return this.m_PaddingMode;
|
|
}
|
|
set
|
|
{
|
|
if (this.m_Handle == 0)
|
|
{
|
|
throw new ObjectDisposedException(base.GetType().FullName);
|
|
}
|
|
int paddingMode = this.GetPaddingMode(value);
|
|
if (SspiProvider.CryptSetKeyParam(this.m_Handle, 3, ref paddingMode, 0) == 0)
|
|
{
|
|
throw new CryptographicException("Unable to set the padding type.");
|
|
}
|
|
this.m_PaddingMode = value;
|
|
}
|
|
}
|
|
|
|
public int Provider
|
|
{
|
|
get
|
|
{
|
|
if (this.m_Handle == 0)
|
|
{
|
|
throw new ObjectDisposedException(base.GetType().FullName);
|
|
}
|
|
return this.m_Provider;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|