internal static void SetCacheValue(IPropertySet containerValues, byte[] value)
{
byte[] encryptedValue = CryptographyHelper.Encrypt(value);
containerValues[CacheValueLength] = encryptedValue.Length;
if (encryptedValue == null)
{
containerValues[CacheValueSegmentCount] = 1;
containerValues[CacheValue + 0] = null;
}
else
{
int segmentCount = (encryptedValue.Length / MaxCompositeValueLength) + ((encryptedValue.Length % MaxCompositeValueLength == 0) ? 0 : 1);
byte[] subValue = new byte[MaxCompositeValueLength];
for (int i = 0; i < segmentCount - 1; i++)
{
Array.Copy(encryptedValue, i * MaxCompositeValueLength, subValue, 0, MaxCompositeValueLength);
containerValues[CacheValue + i] = subValue;
}
int copiedLength = (segmentCount - 1) * MaxCompositeValueLength;
Array.Copy(encryptedValue, copiedLength, subValue, 0, encryptedValue.Length - copiedLength);
containerValues[CacheValue + (segmentCount - 1)] = subValue;
containerValues[CacheValueSegmentCount] = segmentCount;
}
}
internal static byte[] GetCacheValue(IPropertySet containerValues)
{
if (!containerValues.ContainsKey(CacheValueLength))
{
return(null);
}
int encyptedValueLength = (int)containerValues[CacheValueLength];
int segmentCount = (int)containerValues[CacheValueSegmentCount];
byte[] encryptedValue = new byte[encyptedValueLength];
if (segmentCount == 1)
{
encryptedValue = (byte[])containerValues[CacheValue + 0];
}
else
{
for (int i = 0; i < segmentCount - 1; i++)
{
Array.Copy((byte[])containerValues[CacheValue + i], 0, encryptedValue, i * MaxCompositeValueLength, MaxCompositeValueLength);
}
}
Array.Copy((byte[])containerValues[CacheValue + (segmentCount - 1)], 0, encryptedValue, (segmentCount - 1) * MaxCompositeValueLength, encyptedValueLength - (segmentCount - 1) * MaxCompositeValueLength);
return(CryptographyHelper.Decrypt(encryptedValue));
}
/// <summary>
/// Signs a message using the private key in the certificate
/// </summary>
/// <param name="message">Message that needs to be signed</param>
/// <returns>Signed message as a byte array</returns>
public byte[] Sign(string message)
{
CryptographyHelper helper = new CryptographyHelper();
return(helper.SignWithCertificate(message, this.Certificate));
}