C# HMACSHA256加密
using System.Security.Cryptography;
//加密算法HmacSHA256
private static string HmacSHA256(string secret, string signKey)
{
string signRet = string.Empty;
using (HMACSHA256 mac = new HMACSHA256(Encoding.UTF8.GetBytes(signKey)))
{
byte[] hash = mac.ComputeHash(Encoding.UTF8.GetBytes(secret));
signRet = Convert.ToBase64String(hash);
//signRet = ToHexString(hash); ;
}
return signRet;
}
//byte[]转16进制格式string
public static string ToHexString(byte[] bytes)
{
string hexString = string.Empty;
if (bytes != null)
{
StringBuilder strB = new StringBuilder();
foreach (byte b in bytes)
{
strB.AppendFormat("{0:x2}", b);
}
hexString = strB.ToString();
}
return hexString;
}