I am trying to build a working encrypted signature for the Amazon S3 web service, writing a connection library using Objective C. I have run into HMAC SHA-1 digest problems with the ObjC code, so I'm putting that to the side and looking at existing, working Perl code, to try to troubleshoot digest creation. I am testing HMAC SHA-1 dig...
hello, i am asking myself if it would be dangerous on a asp.net page´s codebehind to use an static (Shared) variable which holds an HMACSHA1-instance. the problem is that the same HMACSHA1-instance would be used by all the asp.net worker-process´ threads when processing multiple simultaneous requests on the same asp.net-page. all (HMAC...
I'm trying to compute hmac using sha-512. The Perl code: use Digest::SHA qw(hmac_sha512_hex); $key = "\x0b"x20; $data = "Hi There"; $hash = hmac_sha512_hex($data, $key); print "$hash\n"; and gives the correct hash of 87aa7cdea5ef619d4ff0b4241a1d6cb02379f4e2ce4ec2787ad0b30545e17cde daa833b7d6b8a702038b274eaea3f4e4be9d914eeb6...
What is the Python equivalent of following Perl code? hmac_md5_hex($login . "^" . $seq . "^" . $time . "^" . $amo . "^", $CryptoKey); The Python hashlib.md5 doesn't seem to take an "cryptographic key" argument. It only accepts 1 argument. ...
im trying to get a call to amazon web service and im stuck on getting the signature, looked at this but i still have a question on it. using this example what is the NSData *keyData; NSData *clearTextData ? what do i need to pass for these two values? /* inputs: NSData *keyData; NSData *clearTextData */ uint8_t digest[CC_S...
I need to generate HMAC-SHA1 in Objective C. But i didnt find anything that works. I tried with CommonCrypto, using CCHMAC, but didnt works. I need to generate a hmac and after generate HOTP number. Somebody have any example code in Objective C or C? ...
Hello, I need to create a keyed hash for a string of XML to send to a 3rd party. This is the code I am using but it is producing a different hash then the example the 3rd party has sent me. I have been through all the tutorials I can find and re-read MSDN again and again, what am I doing wrong? Or should I suspect a problem at the other...
We are trying to calculate a HMAC-SHA256 digest in Coldfusion and we are using the HMAC CFC, but in one case it is producing a different result for the digest compared to ones generated in different languages - have tried the same data using Ruby & PHP and get the expected result. I have also tried the CF_HMAC custom tag it is based on a...
Hi we previously use a C#.net 2.0 to create a web app. Users password were hashed and stored in database using the following code. private const string encryptionKey = "AE09F72B007CAAB5"; HMACSHA1 hash = new HMACSHA1(); hash.Key = HexToByte(encryptionKey); encodedPassword = Convert.ToBase64String( hash.ComputeHash(Encoding.Unicod...
I was wondering if there would be a way to get a HMAC-SHA1 signature in scala without having to compile a java class with the code everyone use in java. Any ideas? ...
I have an edge case. I'm building code that reads binary datafiles produced by a commercial, closed source tool. The information on the data format is specified in a document. For data integrity checks, the vendor's spec calls for an HMAC based on SHA1, using a key derived from a password as per RFC2898. Many programming environments h...
Hello everyone, As mentioned by the title, I would like to find an implementation for HMAC-SHA-512 written for ActionScript. I was able to find a library that provide HMAC-SHA-256 with other functions, however, I am looking for HMAC-SHA-512 specifically. Thank you Edit: Or, since actionscript and javascript have the same origin, can ...
I'm trying to create an HMAC in Ruby and then verify it in PHP. Ruby: require 'openssl' message = "A522EBF2-5083-484D-99D9-AA97CE49FC6C,1234567890,/api/comic/aWh62,GET" key = "3D2143BD-6F86-449F-992C-65ADC97B968B" hash = OpenSSL::HMAC.hexdigest('sha256', message, key) p hash PHP: <?php $message = "A522EBF2-5083-484D-99D9-AA...
Hi all, Using Google + Bing didn't yield an answer to what should be a simple question: How are you supposed to use the HMAC module in Ruby to create a HMAC with MD5 (that uses a secret)? The HMAC docs seem awfully thin. Thanks! ...
I'm looking for a java equivalent to this php call: hash_hmac('sha1', "test", "secret") I tried this, using java.crypto.Mac, but the two do not agree: String mykey = "secret"; String test = "test"; try { Mac mac = Mac.getInstance("HmacSHA1"); SecretKeySpec secret = new SecretKeySpec(mykey.getBytes(),"HmacSHA1"); mac.init(...
I need to generate a HMAC for objects that I am serializing using the XMLSerializer found in the .NET framework. Each object will contain a property called "HMAC" that will contain a hash of the object's values itself but excluding the "HMAC" field. I've found this question that mentions a built-in solution within the CLR but doesn't ela...
Hi, I have to implement the HMAC MD5 in my iPhone app. The PHP version of the algorithm (implemented server side for verification) is here and I can't modify it (it's an API) function hmac($key, $data) { $b = 64; // byte length for md5 if (strlen($key) > $b) { $key = pack("H*",md5($key)); } $key = str_pad($key, $b, chr(0x00)); ...
Assuming we have a salt that's in the database and that has been generated like this $salt = time(); What is the difference between these 2 lines. $pass1 = hash('sha1', $password . $salt); $pass2 = hash_hmac('sha1', $password, $salt); They don't produce the same output. The first one, the hash function takes 2 params, while the h...
The Apache module auth_tkt creates authentication cookies that can be verified cryptographically so a web server can generate REMOTE_USER without consulting a database. What is the specification for auth_tkt cookies? ...
I have a single view that handles a lot of Models of type VoyagesViewModel, in that view the user can create a new voyage or edit all the active voyages, so i have different instances of the same object type in that view. each form contains something like: <% = Html.Hidden("Voyages["+ i +"].VoyageDetails[" + i2 + "].Id", location.Id)%> ...