public static string HmacSign(string aValue, string aKey)
{
int num;
byte[] data = new byte[0x40];
byte[] buffer2 = new byte[0x40];
byte[] bytes = Encoding.UTF8.GetBytes(aKey);
byte[] buffer4 = Encoding.UTF8.GetBytes(aValue);
for (num = bytes.Length; num < 0x40; num++)
{
data[num] = 0x36;
}
for (num = bytes.Length; num < 0x40; num++)
{
buffer2[num] = 0x5c;
}
for (num = 0; num < bytes.Length; num++)
{
data[num] = (byte)(bytes[num] ^ 0x36);
buffer2[num] = (byte)(bytes[num] ^ 0x5c);
}
HmacMD5 cmd = new HmacMD5();
cmd.update(data, (uint)data.Length);
cmd.update(buffer4, (uint)buffer4.Length);
byte[] buffer5 = cmd.finalize();
cmd.init();
cmd.update(buffer2, (uint)buffer2.Length);
cmd.update(buffer5, 0x10);
return(toHex(cmd.finalize()));
}
/// <summary>
/// 生成mac值
/// 手机支付平台的mac值需要先调用HmacSign（String source），再调用HmacSign（string aValue, string aKey）
/// </summary>
/// <param name="aValue">生成mac值的原文</param>
/// <param name="aKey">MD5算法的key值</param>
/// <returns></returns>
public static string HmacSign(string aValue, string aKey)
{
byte[] k_ipad = new byte[0x40];
byte[] k_opad = new byte[0x40];
byte[] keyb = Encoding.UTF8.GetBytes(aKey);
byte[] Value = Encoding.UTF8.GetBytes(aValue);
for (int i = keyb.Length; i < 0x40; i++)
{
k_ipad[i] = 0x36;
}
for (int i = keyb.Length; i < 0x40; i++)
{
k_opad[i] = 0x5c;
}
for (int i = 0; i < keyb.Length; i++)
{
k_ipad[i] = (byte)(keyb[i] ^ 0x36);
k_opad[i] = (byte)(keyb[i] ^ 0x5c);
}
HmacMD5 md = new HmacMD5();
md.update(k_ipad, (uint)k_ipad.Length);
md.update(Value, (uint)Value.Length);
byte[] dg = md.finalize();
md.init();
md.update(k_opad, (uint)k_opad.Length);
md.update(dg, 0x10);
String result = toHex(md.finalize());
//log.Info("HmacSign-RSP:Hmac="+result);
return(result);
}