public static AuthDataEntry SignedKeyAuthenticate(string stringToSign, string requestSignature, AuthenticationInformation authInfo)
{
AuthDataEntry authDataEntry;
NephosAssertionException.Assert(!string.IsNullOrEmpty(stringToSign));
NephosAssertionException.Assert(!string.IsNullOrEmpty(requestSignature));
NephosAssertionException.Assert(authInfo != null);
RequestContext requestContext = authInfo.RequestContext;
NephosUriComponents uriComponents = authInfo.UriComponents;
NameValueCollection queryParameters = requestContext.QueryParameters;
string item = queryParameters["sv"];
byte[] sign = BlobSignedAccessHelper.ComputeUrlDecodedUtf8EncodedStringToSign(queryParameters, uriComponents);
using (IEnumerator <AuthDataEntry> enumerator = SharedKeyAuthInfoHelper.GetSharedKeys(authInfo).GetEnumerator())
{
while (enumerator.MoveNext())
{
AuthDataEntry current = enumerator.Current;
byte[] numArray = SASUtilities.ComputeSignedKey(sign, current.AuthValue);
if (!SASUtilities.ComputeSignatureAndCompare((new UTF8Encoding()).GetBytes(stringToSign), numArray, requestSignature))
{
continue;
}
authDataEntry = current;
return(authDataEntry);
}
CultureInfo invariantCulture = CultureInfo.InvariantCulture;
object[] objArray = new object[] { requestSignature, stringToSign };
throw new AuthenticationFailureException(string.Format(invariantCulture, "The MAC signature found in the HTTP request '{0}' is not the same as any computed signature. Server used following string to sign: '{1}'.", objArray));
}
return(authDataEntry);
}
public bool ComputeSignatureAndCompare(byte[] stringToSign, SecretKeyListV3 keys)
{
bool flag;
NephosAssertionException.Assert(stringToSign != null);
NephosAssertionException.Assert(keys != null);
if (keys.Count == 0)
{
throw new ArgumentException("Invalid number of keys");
}
bool flag1 = string.IsNullOrEmpty(this.KeyName);
List <SecretKeyV3> .Enumerator enumerator = keys.GetEnumerator();
try
{
while (enumerator.MoveNext())
{
SecretKeyV3 current = enumerator.Current;
if ((!flag1 || !current.IsDefault()) && !string.Equals(current.Name, this.KeyName) || !SASUtilities.ComputeSignatureAndCompare(stringToSign, current.Value, this.Signature))
{
continue;
}
this.KeyUsedForSigning = current;
flag = true;
return(flag);
}
return(false);
}
finally
{
((IDisposable)enumerator).Dispose();
}
return(flag);
}