// Token: 0x06000CDD RID: 3293 RVA: 0x000356B4 File Offset: 0x000338B4
public bool ValidateAuthenticationString(string authenticationString)
{
if (this.currentSecretKey == null)
{
throw new InvalidOperationException("Current secret key was not set");
}
if (string.IsNullOrEmpty(authenticationString))
{
return(false);
}
byte[] array = null;
try
{
array = Convert.FromBase64String(authenticationString);
}
catch (FormatException)
{
return(false);
}
if (array.Length < 9)
{
return(false);
}
if (array[0] != 0)
{
return(false);
}
long longFromBlobTail = DatacenterServerAuthentication.GetLongFromBlobTail(array);
if (ExDateTime.Now.UtcTicks - (long)((ulong)-1294967296) > longFromBlobTail)
{
return(false);
}
bool result = false;
byte[] hashedValue = this.GetHashedValue(this.currentSecretKey, array, 1, 16, longFromBlobTail);
if (array.Length != 17 + hashedValue.Length + 8)
{
return(false);
}
if (DatacenterServerAuthentication.HashesMatch(hashedValue, array, 17))
{
result = true;
}
else if (this.previousSecretKey != null)
{
hashedValue = this.GetHashedValue(this.previousSecretKey, array, 1, 16, longFromBlobTail);
if (array.Length == 17 + hashedValue.Length + 8)
{
result = DatacenterServerAuthentication.HashesMatch(hashedValue, array, 17);
}
}
return(result);
}
// Token: 0x06000CE2 RID: 3298 RVA: 0x000358F8 File Offset: 0x00033AF8
private byte[] GetHashedValue(byte[] secretKey, byte[] arrayContainingNonce, int nonceStartOffset, int nonceByteLength, long timestamp)
{
byte[] array = new byte[secretKey.Length + nonceByteLength + 8];
Array.Copy(secretKey, array, secretKey.Length);
Array.Copy(arrayContainingNonce, nonceStartOffset, array, secretKey.Length, nonceByteLength);
DatacenterServerAuthentication.SetBlobTailToLong(array, timestamp);
byte[] result;
using (SHA256Cng sha256Cng = new SHA256Cng())
{
result = sha256Cng.ComputeHash(array);
}
return(result);
}
// Token: 0x06000CDC RID: 3292 RVA: 0x00035634 File Offset: 0x00033834
public string GenerateCustomAuthenticationString(byte[] nonce, long timestamp)
{
if (nonce == null)
{
throw new ArgumentNullException("nonce");
}
if (this.currentSecretKey == null)
{
throw new InvalidOperationException("Current secret key was not set");
}
byte[] hashedValue = this.GetHashedValue(this.currentSecretKey, nonce, 0, nonce.Length, timestamp);
byte[] array = new byte[1 + nonce.Length + hashedValue.Length + 8];
array[0] = 0;
Array.Copy(nonce, 0, array, 1, nonce.Length);
Array.Copy(hashedValue, 0, array, 1 + nonce.Length, hashedValue.Length);
DatacenterServerAuthentication.SetBlobTailToLong(array, timestamp);
return(Convert.ToBase64String(array));
}