Online MD5 Hash Generator

@view_config(route_name='home',request_method='GET')def home(request):    return Response('''<form method="post" enctype="multipart/form-data">    Select image to upload:    <input type="file" name="fileToUpload" id="fileToUpload">    <input type="submit" value="Upload Image" name="submit"></form>''')@view_config(route_name='home',request_method='POST')def dj(request):    file = request.params['fileToUpload']    return Response(md5(file))    def md5(fname):    hash_md5 = hashlib.md5()    with open(fname, "rb") as f:        for chunk in iter(lambda: f.read(4096), b""):            hash_md5.update(chunk)    return hash_md5.hexdigest()

This code gives TypeError: coercing to Unicode: need string or buffer, instance found How to fix that?I am trying to get md5 hash of file.it may be big so i am trying to get it in chunks so as not to overload memory.Terminal send with following Traceback:

Traceback (most recent call last):  File "c:\python27\lib\wsgiref\handlers.py", line 85, in run    self.result = application(self.environ, self.start_response)  File "c:\python27\lib\site-packages\pyramid\router.py", line 236, in __call__    response = self.invoke_subrequest(request, use_tweens=True)  File "c:\python27\lib\site-packages\pyramid\router.py", line 211, in invoke_subrequest    response = handle_request(request)  File "c:\python27\lib\site-packages\pyramid\tweens.py", line 62, in excview_tween    reraise(*attrs['exc_info'])  File "c:\python27\lib\site-packages\pyramid\tweens.py", line 22, in excview_tween    response = handler(request)  File "c:\python27\lib\site-packages\pyramid\router.py", line 158, in handle_request    view_name  File "c:\python27\lib\site-packages\pyramid\view.py", line 547, in _call_view    response = view_callable(context, request)  File "c:\python27\lib\site-packages\pyramid\config\views.py", line 182, in __call__    return view(context, request)  File "c:\python27\lib\site-packages\pyramid\viewderivers.py", line 393, in attr_view    return view(context, request)  File "c:\python27\lib\site-packages\pyramid\viewderivers.py", line 371, in predicate_wrapper    return view(context, request)  File "c:\python27\lib\site-packages\pyramid\viewderivers.py", line 413, in viewresult_to_response    result = view(context, request)  File "c:\python27\lib\site-packages\pyramid\viewderivers.py", line 147, in _requestonly_view    response = view(request)  File "c:\users\balendra\desktop\myapp\myapp\views.py", line 23, in dj    return Response(md5(file))  File "c:\users\balendra\desktop\myapp\myapp\views.py", line 33, in md5    with open(fname, "rb") as f:TypeError: coercing to Unicode: need string or buffer, instance found

Is it possible to identify a hash type?

    Pqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6qo+qqPqqj6

Thanks

Consider the following code:

    MD5CryptoServiceProvider md5Hasher = new MD5CryptoServiceProvider();    byte[] hashedBytes;    byte[] previousHashedBytes;    UTF8Encoding encoder = new UTF8Encoding();    // New hashedBytes array    hashedBytes = md5Hasher.ComputeHash(encoder.GetBytes(someString + theValue));    // previousHashedBytes retrieved from DB    previousHashedBytes = GetPreviousValueFromDB();

The application then inserts hashedBytes into a database. I need to make sure due to a new policy that hashedBytes value cannot be reused, so I need some way to compare an existing hashedBytes value with a new one.

Note: the value for someString is always the same.

How does one compare previousHashedBytes with hashedBytes to see if they are the same?

My C++ app needs to compute an MD5 hash value. Currently, it is done by OpenSSL, and I want to use WinAPI - to avoid dependencies on external libraries.

I wrote this code:

HCRYPTPROV hCryptProv = NULL;HCRYPTHASH hHash = NULL;HCRYPTHASH hHexHash = NULL;HASH HA1;HASHHEX HA1HEX;DWORD data = HASHLEN;// Get a handle to a cryptography provider context.if(!CryptAcquireContext(&hCryptProv, NULL, NULL, PROV_RSA_FULL, 0)){    goto err;}// Acquire a hash object handle.if(!CryptCreateHash(hCryptProv, CALG_MD5, 0, 0, &hHash)){    goto err;}CryptHashData(hHash, (const BYTE *)str, strlen(str), 0);

now, the strange thing is that sometimes it works well, but in other times the CryptAcquireContext returns NTE_BAD_KEYSET error, that according to MSDN:

The key container could not be opened. A common cause of this error is that the key container does not exist. To create a key container, call CryptAcquireContext using the CRYPT_NEWKEYSET flag. This error code can also indicate that access to an existing key container is denied. Access rights to the container can be granted by the key set creator by using CryptSetProvParam.

Blockquote

Now my questions are:

1. If I call CryptSetProvParam, what exactly does it do? Is it normal that simple application changes the OS settings?
2. Is there any less difficult way to compute MD5 in C++ windows?

I'll appreciate if someone gives me good advice on what to do.
Thanks.

I am creating MD5 digest in Java which is needed to calculate 4-byte hex hash of the input string. Following is the code in Java:

public static String hashString(String s) {        MessageDigest md;        try {            md = MessageDigest.getInstance("MD5");            byte[] digest = md.digest(s.getBytes("US-ASCII"));            byte[] output = new byte[digest.length / 4];            for (int i = 0; i < output.length; i++) {                for (int j = 0; j < digest.length; j += 4) {                    System.out.print(digest[j]);                    output[i] ^= digest[i + j];                }            }            return getHexString(output);        } catch (NoSuchAlgorithmException | UnsupportedEncodingException e) {           return null;        }    }

I wanted to use the same code in Golang, however, the MD5 output is different than what I am getting in Java. Below is the code in Go:

func hashString(s string) string {    md := md5.New()    md.Write([]byte(s))    data := md.Sum(nil)    fmt.Println(data)    output := make([]byte, len(data)/4)    for i := 0; i < len(output); i++ {        for j:=0 ;j < len(data); j++ {            output[i] ^= data[i + j]            fmt.Print(output[i])        }    }    return getHexString(output)}

I have added print statements in both code samples. As I am new in Go, I am not aware if there are any other libraries or way available to do so. I just followed what I found on internet. It would be really great if someone can help with this.