bigramx/libraries-tivadar-besthttp
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

- Initial commit

Browse Source
This commit is contained in:
Timur Kozanov
2026-07-03 05:02:26 +03:00
commit 374ff1e689
4080 changed files with 388870 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

222
Runtime/3rdParty/BouncyCastle/crypto/agreement/srp/SRP6Utilities.cs vendored Normal file
View File

@ -0,0 +1,222 @@
#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
#pragma warning disable
using System;
using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math;
using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities;
namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Agreement.Srp
{
public class Srp6Utilities
{
public static BigInteger CalculateK(IDigest digest, BigInteger N, BigInteger g)
{
return HashPaddedPair(digest, N, N, g);
}
public static BigInteger CalculateU(IDigest digest, BigInteger N, BigInteger A, BigInteger B)
{
return HashPaddedPair(digest, N, A, B);
}
public static BigInteger CalculateX(IDigest digest, BigInteger N, byte[] salt, byte[] identity, byte[] password)
{
#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
return CalculateX(digest, N, salt.AsSpan(), identity.AsSpan(), password.AsSpan());
#else
byte[] output = new byte[digest.GetDigestSize()];
digest.BlockUpdate(identity, 0, identity.Length);
digest.Update((byte)':');
digest.BlockUpdate(password, 0, password.Length);
digest.DoFinal(output, 0);
digest.BlockUpdate(salt, 0, salt.Length);
digest.BlockUpdate(output, 0, output.Length);
digest.DoFinal(output, 0);
return new BigInteger(1, output);
#endif
}
#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
public static BigInteger CalculateX(IDigest digest, BigInteger N, ReadOnlySpan<byte> salt,
ReadOnlySpan<byte> identity, ReadOnlySpan<byte> password)
{
int digestSize = digest.GetDigestSize();
Span<byte> output = digestSize <= 128
? stackalloc byte[digestSize]
: new byte[digestSize];
digest.BlockUpdate(identity);
digest.Update((byte)':');
digest.BlockUpdate(password);
digest.DoFinal(output);
digest.BlockUpdate(salt);
digest.BlockUpdate(output);
digest.DoFinal(output);
return new BigInteger(1, output);
}
#endif
public static BigInteger GeneratePrivateValue(IDigest digest, BigInteger N, BigInteger g, SecureRandom random)
{
int minBits = System.Math.Min(256, N.BitLength / 2);
BigInteger min = BigInteger.One.ShiftLeft(minBits - 1);
BigInteger max = N.Subtract(BigInteger.One);
return BigIntegers.CreateRandomInRange(min, max, random);
}
public static BigInteger ValidatePublicValue(BigInteger N, BigInteger val)
{
val = val.Mod(N);
// Check that val % N != 0
if (val.Equals(BigInteger.Zero))
throw new CryptoException("Invalid public value: 0");
return val;
}
/**
* Computes the client evidence message (M1) according to the standard routine:
* M1 = H( A | B | S )
* @param digest The Digest used as the hashing function H
* @param N Modulus used to get the pad length
* @param A The public client value
* @param B The public server value
* @param S The secret calculated by both sides
* @return M1 The calculated client evidence message
*/
public static BigInteger CalculateM1(IDigest digest, BigInteger N, BigInteger A, BigInteger B, BigInteger S)
{
BigInteger M1 = HashPaddedTriplet(digest, N, A, B, S);
return M1;
}
/**
* Computes the server evidence message (M2) according to the standard routine:
* M2 = H( A | M1 | S )
* @param digest The Digest used as the hashing function H
* @param N Modulus used to get the pad length
* @param A The public client value
* @param M1 The client evidence message
* @param S The secret calculated by both sides
* @return M2 The calculated server evidence message
*/
public static BigInteger CalculateM2(IDigest digest, BigInteger N, BigInteger A, BigInteger M1, BigInteger S)
{
BigInteger M2 = HashPaddedTriplet(digest, N, A, M1, S);
return M2;
}
/**
* Computes the final Key according to the standard routine: Key = H(S)
* @param digest The Digest used as the hashing function H
* @param N Modulus used to get the pad length
* @param S The secret calculated by both sides
* @return
*/
public static BigInteger CalculateKey(IDigest digest, BigInteger N, BigInteger S)
{
int paddedLength = (N.BitLength + 7) / 8;
int digestSize = digest.GetDigestSize();
#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
Span<byte> bytes = paddedLength <= 512
? stackalloc byte[paddedLength]
: new byte[paddedLength];
BigIntegers.AsUnsignedByteArray(S, bytes);
digest.BlockUpdate(bytes);
Span<byte> output = digestSize <= 128
? stackalloc byte[digestSize]
: new byte[digestSize];
digest.DoFinal(output);
#else
byte[] bytes = new byte[paddedLength];
BigIntegers.AsUnsignedByteArray(S, bytes, 0, bytes.Length);
digest.BlockUpdate(bytes, 0, bytes.Length);
byte[] output = new byte[digestSize];
digest.DoFinal(output, 0);
#endif
return new BigInteger(1, output);
}
private static BigInteger HashPaddedTriplet(IDigest digest, BigInteger N, BigInteger n1, BigInteger n2, BigInteger n3)
{
int paddedLength = (N.BitLength + 7) / 8;
int digestSize = digest.GetDigestSize();
#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
Span<byte> bytes = paddedLength <= 512
? stackalloc byte[paddedLength]
: new byte[paddedLength];
BigIntegers.AsUnsignedByteArray(n1, bytes);
digest.BlockUpdate(bytes);
BigIntegers.AsUnsignedByteArray(n2, bytes);
digest.BlockUpdate(bytes);
BigIntegers.AsUnsignedByteArray(n3, bytes);
digest.BlockUpdate(bytes);
Span<byte> output = digestSize <= 128
? stackalloc byte[digestSize]
: new byte[digestSize];
digest.DoFinal(output);
#else
byte[] bytes = new byte[paddedLength];
BigIntegers.AsUnsignedByteArray(n1, bytes, 0, bytes.Length);
digest.BlockUpdate(bytes, 0, bytes.Length);
BigIntegers.AsUnsignedByteArray(n2, bytes, 0, bytes.Length);
digest.BlockUpdate(bytes, 0, bytes.Length);
BigIntegers.AsUnsignedByteArray(n3, bytes, 0, bytes.Length);
digest.BlockUpdate(bytes, 0, bytes.Length);
byte[] output = new byte[digestSize];
digest.DoFinal(output, 0);
#endif
return new BigInteger(1, output);
}
private static BigInteger HashPaddedPair(IDigest digest, BigInteger N, BigInteger n1, BigInteger n2)
{
int paddedLength = (N.BitLength + 7) / 8;
int digestSize = digest.GetDigestSize();
#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
Span<byte> bytes = paddedLength <= 512
? stackalloc byte[paddedLength]
: new byte[paddedLength];
BigIntegers.AsUnsignedByteArray(n1, bytes);
digest.BlockUpdate(bytes);
BigIntegers.AsUnsignedByteArray(n2, bytes);
digest.BlockUpdate(bytes);
Span<byte> output = digestSize <= 128
? stackalloc byte[digestSize]
: new byte[digestSize];
digest.DoFinal(output);
#else
byte[] bytes = new byte[paddedLength];
BigIntegers.AsUnsignedByteArray(n1, bytes, 0, bytes.Length);
digest.BlockUpdate(bytes, 0, bytes.Length);
BigIntegers.AsUnsignedByteArray(n2, bytes, 0, bytes.Length);
digest.BlockUpdate(bytes, 0, bytes.Length);
byte[] output = new byte[digestSize];
digest.DoFinal(output, 0);
#endif
return new BigInteger(1, output);
}
}
}
#pragma warning restore
#endif