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Method to crypt with SHA1

/// 
/// Crypt the string with SHA1
/// 
public static string EncriptarSHA1(string sCadena)
{
	System.Security.Cryptography.SHA1 sha1 = System.Security.Cryptography.SHA1Managed.Create();

	ASCIIEncoding encoding = new ASCIIEncoding();
	byte[] stream = null;
	StringBuilder codificada = new StringBuilder();
	stream = sha1.ComputeHash(encoding.GetBytes(sCadena));

	for (int i = 0; i < stream.Length; i++) codificada.AppendFormat("{0:x2}", stream[i]);
	return codificada.ToString();
}