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break them a bit more...

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This commit is contained in:
UbitUmarov
2024-02-24 15:47:06 +00:00
parent 121f270414
commit eb9afdaffc
3 changed files with 47 additions and 36 deletions
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39
OpenSim/Framework/Util.cs
View File

@@ -1368,13 +1368,13 @@ namespace OpenSim.Framework
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static string AESEncrypt(string secret, string plainText)
public static string AESEncrypt(ReadOnlySpan<char> secret, ReadOnlySpan<char> plainText)
{
return AESEncryptString(secret, plainText, string.Empty);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static string AESEncryptTo(string secret, string plainText, string ivString)
public static string AESEncryptTo(ReadOnlySpan<char> secret, ReadOnlySpan<char> plainText, ReadOnlySpan<char> ivString)
{
return AESEncryptString(secret, plainText, ivString);
}
@@ -1388,15 +1388,15 @@ namespace OpenSim.Framework
/// ID...</param>
/// <returns>A string composed by the Initialization Vector bytes and the
/// encrypted text bytes converted to lower case HexString and separated by " : " </returns>
private static string AESEncryptString(string secret, string plainText, string ivString = null)
private static string AESEncryptString(ReadOnlySpan<char> secret, ReadOnlySpan<char> plainText, ReadOnlySpan<char> ivString)
{
if(string.IsNullOrEmpty(secret) || string.IsNullOrEmpty(plainText))
if(secret.Length == 0 || plainText.Length == 0)
return string.Empty;
byte[] iv = string.IsNullOrEmpty(ivString) ?
byte[] iv = ivString.Length == 0 ?
MD5.Create().ComputeHash(UUID.Random().GetBytes()) :
MD5.Create().ComputeHash(Encoding.UTF8.GetBytes(ivString));
byte[] aesKey = SHA256.Create().ComputeHash(Encoding.UTF8.GetBytes(secret));
MD5.Create().ComputeHash(Utils.StringToBytesNoTerm(ivString));
byte[] aesKey = SHA256.Create().ComputeHash(Utils.StringToBytesNoTerm(secret));
byte[] encryptedText;
using (Aes aes = Aes.Create())
@@ -1419,13 +1419,13 @@ namespace OpenSim.Framework
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static string AESDecrypt(string secret, string encryptedText)
public static ReadOnlySpan<char> AESDecrypt(ReadOnlySpan<char> secret, ReadOnlySpan<char> encryptedText)
{
return AESDecryptString(secret, encryptedText, string.Empty);
return AESDecryptString(secret, encryptedText, new ReadOnlySpan<char>());
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static string AESDecryptFrom(string secret, string encryptedText, string ivString)
public static ReadOnlySpan<char> AESDecryptFrom(ReadOnlySpan<char> secret, ReadOnlySpan<char> encryptedText, ReadOnlySpan<char> ivString)
{
return AESDecryptString(secret, encryptedText, ivString);
}
@@ -1440,31 +1440,30 @@ namespace OpenSim.Framework
/// if used in the encription. eg; an avatarID, a SecureSessionID, an object or
/// script ID...</param>
/// <returns>The decrypted string.</returns>
private static string AESDecryptString(string secret, string encryptedText, string ivString = null)
private static ReadOnlySpan<char> AESDecryptString(ReadOnlySpan<char> secret, ReadOnlySpan<char> encryptedText, ReadOnlySpan<char> ivString)
{
if(string.IsNullOrEmpty(secret) || string.IsNullOrEmpty(encryptedText))
if(secret.Length == 0 || encryptedText.Length == 0)
return string.Empty;
string[] encodedParts = encryptedText.Split(":");
if(encodedParts.Length < 2 || encodedParts[1].Length == 0)
int sep = encryptedText.IndexOf(':');
if(sep < 0)
return string.Empty;
byte[] iv;
byte[] buffer;
try
{
iv = string.IsNullOrEmpty(ivString) ?
Convert.FromHexString(encodedParts[0]) :
MD5.Create().ComputeHash(Encoding.UTF8.GetBytes(ivString));
buffer = Convert.FromHexString(encodedParts[1]);
iv = ivString.Length == 0 ?
Convert.FromHexString(encryptedText[..sep]):
MD5.Create().ComputeHash(Utils.StringToBytesNoTerm(ivString));
buffer = Convert.FromHexString(encryptedText[(sep + 1)..]);
}
catch
{
return string.Empty;
}
byte[] aesKey = SHA256.Create().ComputeHash(Encoding.UTF8.GetBytes(secret));
byte[] aesKey = SHA256.Create().ComputeHash(Utils.StringToBytesNoTerm(secret));
using Aes aes = Aes.Create();
aes.Key = aesKey;

24
OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs
View File

@@ -6380,13 +6380,13 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
if(string.IsNullOrEmpty(secret) || string.IsNullOrEmpty(plainText))
return LSL_String.Empty;
string ret = Util.AESEncrypt(secret, plainText);
if(string.IsNullOrEmpty(ret))
ReadOnlySpan<char> ret = Util.AESEncrypt(secret.AsSpan(), plainText.AsSpan());
if(ret.Length == 0)
{
OSSLShoutError("osAESEncrypt: Failed to encrypt!");
return LSL_String.Empty;
}
return ret;
return ret.ToString();
}
public LSL_String osAESDecrypt(string secret, string encryptedText)
@@ -6394,13 +6394,13 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
if(string.IsNullOrEmpty(secret) || string.IsNullOrEmpty(encryptedText))
return LSL_String.Empty;
string ret = Util.AESDecrypt(secret, encryptedText);
if(string.IsNullOrEmpty(ret))
ReadOnlySpan<char> ret = Util.AESDecrypt(secret.AsSpan(), encryptedText.AsSpan());
if(ret.Length == 0)
{
OSSLShoutError("osAESDecrypt: Failed to Decrypt!");
return LSL_String.Empty;
}
return ret;
return ret.ToString();
}
public LSL_String osAESEncryptTo(string secret, string plainText, string ivString)
@@ -6408,13 +6408,13 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
if(string.IsNullOrEmpty(secret) || string.IsNullOrEmpty(plainText) || string.IsNullOrEmpty(ivString))
return LSL_String.Empty;
string ret = Util.AESEncryptTo(secret, plainText, ivString);
if(string.IsNullOrEmpty(ret))
ReadOnlySpan<char> ret = Util.AESEncryptTo(secret.AsSpan(), plainText.AsSpan(), ivString.AsSpan());
if (ret.Length == 0)
{
OSSLShoutError("osAESEncryptTo: Failed to encrypt!");
return LSL_String.Empty;
}
return ret;
return ret.ToString();
}
public LSL_String osAESDecryptFrom(string secret, string encryptedText, string ivString)
@@ -6422,13 +6422,13 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
if(string.IsNullOrEmpty(secret) || string.IsNullOrEmpty(encryptedText) || string.IsNullOrEmpty(ivString))
return LSL_String.Empty;
string ret = Util.AESDecryptFrom(secret, encryptedText, ivString);
if(string.IsNullOrEmpty(ret))
ReadOnlySpan<char> ret = Util.AESDecryptFrom(secret.AsSpan(), encryptedText.AsSpan(), ivString.AsSpan());
if (ret.Length == 0)
{
OSSLShoutError("osAESDecryptFrom: Failed to decrypt!");
return LSL_String.Empty;
}
return ret;
return ret.ToString();
}
}
}

20
OpenSim/Region/ScriptEngine/Shared/LSL_Types.cs
View File

@@ -2256,6 +2256,11 @@ namespace OpenSim.Region.ScriptEngine.Shared
m_string = s;
}
public LSLString(ReadOnlySpan<char> s)
{
m_string = s.ToString();
}
public LSLString(double d)
{
string s = String.Format(Culture.FormatProvider, "{0:0.000000}", d);
@@ -2301,6 +2306,11 @@ namespace OpenSim.Region.ScriptEngine.Shared
return new LSLString(s);
}
static public implicit operator LSLString(ReadOnlySpan<char> s)
{
return new LSLString(s);
}
public static string ToString(LSLString s)
{
return s.m_string;
@@ -2353,10 +2363,7 @@ namespace OpenSim.Region.ScriptEngine.Shared
static public explicit operator LSLString(bool b)
{
if (b)
return new LSLString("1");
else
return new LSLString("0");
return new LSLString( b ? "1" : "0");
}
public static implicit operator Vector3(LSLString s)
@@ -2379,6 +2386,11 @@ namespace OpenSim.Region.ScriptEngine.Shared
return new list(new object[] { s });
}
public static implicit operator ReadOnlySpan<char>(LSLString s)
{
return s.m_string.AsSpan();
}
#endregion
#region Overriders