private string _sign(byte[] data)
{
HMACSHA1 hmac = new HMACSHA1(Encoding.UTF8.GetBytes(this.SecretKey));
byte[] digest = hmac.ComputeHash(data);
return(StringUtils.urlSafeBase64Encode(digest));
}
public static string hash(string filePath)
{
string qetag = "";
try
{
using (FileStream stream = new FileStream(filePath, FileMode.Open, FileAccess.Read))
{
long fileLength = stream.Length;
byte[] buffer = new byte[BLOCK_SIZE];
byte[] finalBuffer = new byte[BLOCK_SHA1_SIZE + 1];
if (fileLength <= BLOCK_SIZE)
{
int readByteCount = stream.Read(buffer, 0, BLOCK_SIZE);
byte[] readBuffer = new byte[readByteCount];
Array.Copy(buffer, readBuffer, readByteCount);
byte[] sha1Buffer = StringUtils.sha1(readBuffer);
finalBuffer[0] = 0x16;
Array.Copy(sha1Buffer, 0, finalBuffer, 1, sha1Buffer.Length);
}
else
{
long blockCount = (fileLength % BLOCK_SIZE == 0) ? (fileLength / BLOCK_SIZE) : (fileLength / BLOCK_SIZE + 1);
byte[] sha1AllBuffer = new byte[BLOCK_SHA1_SIZE * blockCount];
for (int i = 0; i < blockCount; i++)
{
int readByteCount = stream.Read(buffer, 0, BLOCK_SIZE);
byte[] readBuffer = new byte[readByteCount];
Array.Copy(buffer, readBuffer, readByteCount);
byte[] sha1Buffer = StringUtils.sha1(readBuffer);
Array.Copy(sha1Buffer, 0, sha1AllBuffer, i * BLOCK_SHA1_SIZE, sha1Buffer.Length);
}
byte[] sha1AllBufferSha1 = StringUtils.sha1(sha1AllBuffer);
finalBuffer[0] = 0x96;
Array.Copy(sha1AllBufferSha1, 0, finalBuffer, 1, sha1AllBufferSha1.Length);
}
qetag = StringUtils.urlSafeBase64Encode(finalBuffer);
}
}
catch (Exception) { }
return(qetag);
}
public string SignRequest(string url, byte[] reqBody)
{
Uri u = new Uri(url);
using (HMACSHA1 hmac = new HMACSHA1(Encoding.UTF8.GetBytes(this.SecretKey)))
{
string pathAndQuery = u.PathAndQuery;
byte[] pathAndQueryBytes = Encoding.UTF8.GetBytes(pathAndQuery);
using (MemoryStream buffer = new MemoryStream())
{
buffer.Write(pathAndQueryBytes, 0, pathAndQueryBytes.Length);
buffer.WriteByte((byte)'\n');
if (reqBody != null && reqBody.Length > 0)
{
buffer.Write(reqBody, 0, reqBody.Length);
}
byte[] digest = hmac.ComputeHash(buffer.ToArray());
string digestBase64 = StringUtils.urlSafeBase64Encode(digest);
return(string.Format("{0}:{1}", this.AccessKey, digestBase64));
}
}
}
public string SignWithData(byte[] data)
{
string encodedData = StringUtils.urlSafeBase64Encode(data);
return(string.Format("{0}:{1}:{2}", this.AccessKey, this._sign(Encoding.UTF8.GetBytes(encodedData)), encodedData));
}