Skydiver's Profile User Rating: ****-

Reputation: 3843 Guru
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Active Posts:
12,143 (11.75 per day)
Joined:
05-May 12
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Windows
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Chrome
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AMD
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PC
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Toyota
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100
Expert In:
C/C++, C#

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Posts I've Made

  1. In Topic: Generic Handlers and AJAX

    Posted 4 Mar 2015

    So what is the problem? What do you mean by "it wouldn't load my class library"? Are you getting an error about a missing assembly or that an assembly could not be loaded?

    What do you mean by "nothing shows"? What were you expecting to see?
  2. In Topic: Calculator.WriteText - Problem?

    Posted 4 Mar 2015

    So what does "'calculator2.Calcualtor' does not contain a definition for 'WriteText'" tell you? That means you need o define methods as noted by aidenkael.
  3. In Topic: Calculator.WriteText - Problem?

    Posted 4 Mar 2015

    Post the actual error text. Copy and paste it out of the error pane in Visual Studio (if you are using Visual Studio), or from the console if you are using the command line compiler. (Sorry, I don't know how to get the errors out of MonoDevelop.)

    I know exactly what the issue is, but the point here is to get you to examine the error and learn how to parse and understand it. It's one of the skills a programmer needs to learn is understanding error messages. The first step is examining the actual text like a developer, instead of just throwing up your hand in the air when an error box pops up like a regular user.
  4. In Topic: How secure is my stored password

    Posted 4 Mar 2015

    Because sometimes he treats his salt like a C string, and so if the randomizer generates a 0 in the middle of his salt he'll end up losing the rest of his salt when he passes it like a C string to std::string. In reality, he should treat his hash as an array of bytes (e.g. vector<unsigned char>)and not assume that it is a C string. When its time to persist to the database, either use a built in column type that accepts binary blobs, or Base64 encode the salt and then store it as a string.
  5. In Topic: How secure is my stored password

    Posted 3 Mar 2015

    Next, your 256-bit salt is weak. Notice that you are only ever using the lower 7 bits, and of those lower bits, you don't use all the possible bit combinations.

    But in the end this really doesn't matter since your assumption is that the attacker can do an offline attack knowing what the salt is. So it doesn't matter if the salt is 1 bit or 1024 bits.

    The question is, does the attacker know how the salt is applied to password?

    Assuming the answer is yes, then your storage's strength is a strong as its defense against a dictionary attack. For a rainbow table attack, the bad guys can filter down the tables to use just the ones that already match the salt at the expected positions.

My Information

Member Title:
Code herder
Age:
Age Unknown
Birthday:
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Interests:
programming, shooting, skydiving, scuba, photography, game dev, cryptography, design patterns, agile methodologies, scifi, fantasy,
Years Programming:
33
Programming Languages:
C, C++. C#, PHP, JavaScript, Pascal, SQL, BASIC, Forth, x86, 65000, 65xx,

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Comments

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  1. Photo

    jaee Icon

    13 Feb 2015 - 16:23
    Hi,
    I am zaee I need help for coding in c . I need to block all icmp packets in freebsd using divert sockets.
    Can you please help me with this?
  2. Photo

    tarmizi_adam2005 Icon

    08 Mar 2014 - 09:03
    Congrats on the 3k rep ! also, before your rep changes nice palindrome rep, 3003.
  3. Photo

    tarmizi_adam2005 Icon

    27 Nov 2013 - 18:56
    Just wanted to stop by and say thanks on the advices you gave in my post (read wav files C/C++) the other day.
    Thanks again Skydiver
  4. Photo

    sanwall Icon

    27 Nov 2013 - 00:54
    kindly answer my post about visual studio!
  5. Photo

    raspinudo Icon

    03 Jul 2013 - 05:51
    Nice Star Trek t.n.g. Reference
  6. Photo

    todddowers Icon

    26 Jun 2013 - 23:07
    hello i was wondering do you know anything about text based games.
  7. Photo

    CY5 Icon

    10 Jun 2013 - 07:07
    Thanks SkyDiver you're always there to help on C# forum
  8. Photo

    Jovel Mark Icon

    05 Mar 2013 - 23:51
    salamat sa pagtulong .. keep it up the work..
    kung wala kamo wala kami mahimo sang amon nga project ba,, madamo gd nga salamat sa pagtabang..
  9. Photo

    tlhIn`toq Icon

    30 Dec 2012 - 16:20
    Congrats on the Mentor badge. I think that is new record. Glad to have you on board.
  10. Photo

    lp94 Icon

    07 Oct 2012 - 06:09
    thank you soooooo much <3
  11. Photo

    kai_itz me Icon

    25 Sep 2012 - 04:40
    i agreed with MrShoes.
    More knowledgeable than many; more patient than most.
    very well said :)
  12. Photo

    tlhIn`toq Icon

    01 Sep 2012 - 15:22
    I just saw the Expert badge... Well done!
  13. Photo

    nazzie Icon

    22 Aug 2012 - 00:34
    Thanks for your Help! Keep up the good work.. thanks so much! ^_^
  14. Photo

    vikuseth Icon

    17 Aug 2012 - 23:12
    hi
    thanks for helping me in Dll issue .
    you are the best. ..
    good luck...
  15. Photo

    MrShoes Icon

    08 Aug 2012 - 00:49
    More knowledgeable than many; more patient than most.
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