/// <summary>
/// 获取文本内容的Sha值
/// </summary>
/// <param name="text">需要处理的文本，为null时自动以""处理。</param>
/// <param name="level">处理级别，默认为 Sha-1。</param>
/// <param name="encoding">字符编码，默认以utf-8处理（通用）。</param>
/// <returns>返回哈希值。</returns>
public static string Encrypt(string text, SHALevels level = SHALevels.Sha1, System.Text.Encoding encoding = null)
{
if (encoding == null)
{
encoding = System.Text.Encoding.UTF8;
}
if (text == null)
{
text = string.Empty;
}
using (System.Security.Cryptography.HashAlgorithm algorithm = _algorithms[level]()) {
return(ToString(algorithm.ComputeHash(encoding.GetBytes(text))));
}
}
/// <summary>
/// 获取数据的Sha值
/// </summary>
/// <param name="buffer">需要处理的数据。</param>
/// <param name="offset">字节数组中的偏移量，从该位置开始使用数据。</param>
/// <param name="count">数组中用作数据的字节数。</param>
/// <param name="level">处理级别，默认为 Sha-1。</param>
/// <returns>返回哈希值。</returns>
public static string Encrypt(byte[] buffer, int offset, int count, SHALevels level = SHALevels.Sha1)
{
using (System.Security.Cryptography.HashAlgorithm algorithm = _algorithms[level]()) {
return(ToString(algorithm.ComputeHash(buffer, offset, count)));
}
}
/// <summary>
/// 获取数据的Sha值
/// </summary>
/// <param name="inputStream">需要处理的数据。</param>
/// <param name="level">处理级别，默认为 Sha-1。</param>
/// <returns>返回哈希值。</returns>
public static string Encrypt(System.IO.Stream inputStream, SHALevels level = SHALevels.Sha1)
{
using (System.Security.Cryptography.HashAlgorithm algorithm = _algorithms[level]()) {
return(ToString(algorithm.ComputeHash(inputStream)));
}
}
