The MAC signature found in the HTTP request '…' is not the same as any computed signature

Question

I\'m sending the following request in Postman to retrieve a simple .jpg from Azure Blob storage at this URL https://steamo.blob.core.windows.net/testcontainer/dog.jpg

<

Answer 1

Just got this working, here's my code:

string signWithAccountKey(string stringToSign, string accountKey)
{
    var hmacsha = new System.Security.Cryptography.HMACSHA256();
    hmacsha.Key = Convert.FromBase64String(accountKey);
    var signature = hmacsha.ComputeHash(Encoding.UTF8.GetBytes(stringToSign));
    return Convert.ToBase64String(signature);
}