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Groups > comp.lang.java.programmer > #38394
| From | Robert Klemme <shortcutter@googlemail.com> |
|---|---|
| Newsgroups | sci.crypt, comp.lang.java.programmer |
| Subject | Re: Why is Java 7 converting the Password toCharArray instead of Byte in it's PBKDF2 function? |
| Date | 2018-06-19 23:20 +0200 |
| Message-ID | <fotac7Foc74U2@mid.individual.net> (permalink) |
| References | <pdf0kv$uom$1@news.albasani.net> <pdfjv8$e8s$1@news.albasani.net> <foq5mlF5sm0U1@mid.individual.net> <pgandc$d8a$1@news.albasani.net> <dlr1lb3za2zh.dlg@kimmeringer.de> |
Cross-posted to 2 groups.
On 19.06.2018 22:18, Lothar Kimmeringer wrote: > Karl.Frank wrote: > >> The amount of byte to read is exactly defined by >> >> int BuffSize = System.in.available(); >> byte[] pwByte = new byte[BuffSize]; >> System.in.read(pwByte, 0, BuffSize); >> >> How would the program read more byte than necessary? > > InputStream.available only returns the number of bytes that > can be read without blocking. It returns an _estimate_ of that number. A conforming implementation is even allowed to sometimes or always return 0. And in fact this is what InputStream's own implementation does. > Dependent on how the data ends > up there there still might be data left to read that you > missed because of that. > > What you're doing here is a common programming error. I hope not, but may be. Cheers robert -- remember.guy do |as, often| as.you_can - without end http://blog.rubybestpractices.com/
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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
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