Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > sci.crypt > #43433

Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function?

From wizzofozz <oscxxxxxxxaas@gmail.com>
Newsgroups sci.crypt
Subject Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function?
Date 2018-05-15 21:09 +0200
Organization A noiseless patient Spider
Message-ID <pdfb90$jlb$1@dont-email.me> (permalink)
References <pdf0kv$uom$1@news.albasani.net>

Show all headers | View raw

On 15-5-2018 18:07, Karl.Frank wrote:
> I've stuck with getting potential wrong results from a Java 7
> implementation.
> 
> If I call a test function like
> 
> echo -n "Lsda[¥~§#€]" | java -jar pbkdf2_stdin.jar "Salt" 4096 16 sha-1
>

If I do

wizzofozz@cuckoosnest:~$ echo -n 'Lsda[¥~§#.]' | hexdump -C
00000000  4c 73 64 61 5b a5 7e a7  23 2e 5d                 |Lsda[.~.#.]|

Compare with:

> I get
> 
> Password   : 4c7364615bc2a57ec2a723e282ac5d

You can see the interleaved c2's in your password bytes.

Not sure what's happening, but it seems character encoding related (to
UTF8). (http://www.fileformat.info/info/unicode/char/A5/index.htm)
But you probably already figured that out.
I would put more "byteArrToHexString" calls for debugging if I were you.

Cheers
Ozz

Back to sci.crypt | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? "Karl.Frank" <Karl.Frank@Freecx.co.uk> - 2018-05-15 18:07 +0200
  Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? "Karl.Frank" <Karl.Frank@Freecx.co.uk> - 2018-05-15 18:31 +0200
  Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? Bruce Stephens <bruce.r.stephens@gmail.com> - 2018-05-15 19:46 +0100
    Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? "Karl.Frank" <Karl.Frank@Freecx.co.uk> - 2018-05-15 20:52 +0200
  Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? Rich <rich@example.invalid> - 2018-05-15 18:49 +0000
    Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? "Karl.Frank" <Karl.Frank@Freecx.co.uk> - 2018-05-15 21:02 +0200
  Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? wizzofozz <oscxxxxxxxaas@gmail.com> - 2018-05-15 21:09 +0200
    Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? wizzofozz <oscxxxxxxxaas@gmail.com> - 2018-05-15 21:11 +0200
      Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? "Karl.Frank" <Karl.Frank@Freecx.co.uk> - 2018-05-15 21:25 +0200
    Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? "Karl.Frank" <Karl.Frank@Freecx.co.uk> - 2018-05-15 21:29 +0200
      Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? wizzofozz <oscxxxxxxxaas@gmail.com> - 2018-05-15 22:07 +0200
      Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? Rich <rich@example.invalid> - 2018-05-15 20:38 +0000
        Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? "Karl.Frank" <Karl.Frank@Freecx.co.uk> - 2018-05-15 22:57 +0200
  Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? "Karl.Frank" <Karl.Frank@Freecx.co.uk> - 2018-05-15 21:42 +0200
  Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? "Karl.Frank" <Karl.Frank@Freecx.co.uk> - 2018-05-15 23:37 +0200
    Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? "Karl.Frank" <Karl.Frank@Freecx.co.uk> - 2018-05-16 15:58 +0200
    Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? Robert Klemme <shortcutter@googlemail.com> - 2018-06-18 18:41 +0200
      Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2018-06-18 13:33 -0700
      Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? "Karl.Frank" <Karl.Frank@Freecx.co.uk> - 2018-06-19 12:54 +0200
        Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? Lothar Kimmeringer <news201705@kimmeringer.de> - 2018-06-19 22:18 +0200
          Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? Robert Klemme <shortcutter@googlemail.com> - 2018-06-19 23:20 +0200
          Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? "Karl.Frank" <Karl.Frank@Freecx.co.uk> - 2018-06-19 23:23 +0200
        Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? Robert Klemme <shortcutter@googlemail.com> - 2018-06-19 23:15 +0200
          Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? "Karl.Frank" <Karl.Frank@Freecx.co.uk> - 2018-06-20 00:03 +0200

csiph-web