/// <summary>
/// 得到sha系列加密信息
/// </summary>
/// <param name="formFile"></param>
/// <param name="hashAlgorithm"></param>
/// <param name="isUpper">是否转大写</param>
/// <returns></returns>
private static string GetSha(IFormFile formFile, HashAlgorithm hashAlgorithm, bool isUpper)
{
var stream = formFile.OpenReadStream();
byte[] retval = hashAlgorithm.ComputeHash(stream);
stream.Close();
return(SecurityCommon.GetSha(retval, hashAlgorithm, isUpper));
}
/// <summary>
/// 根据本地文件地址得到文件的Sha256
/// </summary>
/// <param name="localFilePath">文件绝对地址</param>
/// <returns></returns>
public static string GetSha256(string localFilePath)
{
if (!File.Exists(localFilePath))
{
return("");
}
using (FileStream fileStream =
new FileStream(localFilePath, FileMode.Open, FileAccess.Read))
{
return(SecurityCommon.GetSha(fileStream, new SHA256CryptoServiceProvider()));
}
}
/// <summary>
/// 得到sha系列加密信息
/// </summary>
/// <param name="formFile"></param>
/// <param name="hashAlgorithm"></param>
/// <returns></returns>
private static string GetSha(IFormFile formFile, HashAlgorithm hashAlgorithm)
{
var stream = formFile.OpenReadStream();
byte[] retval = hashAlgorithm.ComputeHash(stream);
stream.Close();
return(SecurityCommon.GetSha(retval, hashAlgorithm));
StringBuilder sc = new StringBuilder();
for (int i = 0; i < retval.Length; i++)
{
sc.Append(retval[i].ToString("X2"));
}
return(sc.ToString());
}