11 Comments on “What is the length of the MD5 hash?”

1. leo says:

   August 1, 2012 at 8:12 pm

   none of this is correct.

   MD5 = 128 bits/16 bytes

   hex encoded: 32 characters

   1. Me says:

      September 30, 2012 at 10:53 pm

      agreed, should be 32 chars (length)

2. hannah says:

   October 1, 2012 at 9:28 pm

   See here:
   http://en.wikipedia.org/wiki/MD5
   “An MD5 hash is typically expressed as a hexadecimal number, 32 digits long.”

   Here is no correct answer here.

3. hannah says:

   October 1, 2012 at 9:35 pm

   correction:

   MD5 is 128 bit which is 16 Byte. Notice there are 4 files. Hence 16×4=64 byte. So the correct answer is B.

   1. Eddie Guerrero says:

      October 25, 2012 at 3:48 am

      I think your first answer was correct, not the second. An md5 hash is a hex md5 hash on these windows files, 32 character for the hexadecimal representation, as their picture shows (4 bits per character = 128bits). They don’t have that answer! Even if you try to use programming encoding, the answer is still not going to be here! When I’m programming trying to get a digest, the math works like 128bit means 16bytes (binary), 32 bytes (hex) and 22 (base64), none of those answers could be used for lengths.

      The example shows you 4 files, true, but only because he’s showing you that only the last 2 files were “good” in status, as an example of WHY you’d compare a file versus its hash.

4. chino says:

   October 24, 2012 at 2:32 pm

   very confusing. now i’m not sure which of one is the answer. Can someone tell me how accurate is this exam? I am trying to take the exam soon and I’ve seen a lot of confusing answers already. any suggestions on what other testprep to study?

5. Somp says:

   November 9, 2012 at 11:12 pm

   Another view of the screenshot:

   The program says, that you can drop a md5-sum file for processing. The screenshot lists one such file. So, if we assume, that we don’t want that but only the other three files, we would come to those 48 chars :).

6. Sam says:

   December 26, 2012 at 9:34 pm

   I think Somp’s answer is correct.
   The 128 bit length doesn’t change with the file size. We also do not include the length of the loaded (.md5) file.
   Thus having 3 files >> 3*128 bit= 384 bits
   384/8=48 Char.

7. Candy says:

   January 17, 2013 at 5:14 pm

   Option D.
   The length of the hash value is determined by the type of the used algorithm, and its length does not depend on the size of the file. The most common hash value lengths are either 128 or 160 bits.

8. manto says:

   May 15, 2013 at 12:56 am

   32 char

9. ibraheem says:

   July 1, 2015 at 12:10 pm

   first answer was correct

   A.
   32 bit

   An MD5 hash is typically expressed as a hexadecimal number, 32 digits long

   twitter:
   @ibraheem_111