oss-sec mailing list archives
Re: kwallet crypto misuse
From: Daniel Kahn Gillmor <dkg () fifthhorseman net>
Date: Fri, 03 Jan 2014 12:44:42 -0500
On 01/03/2014 02:27 AM, gremlin () gremlin ru wrote:
On 02-Jan-2014 09:15:15 +0100, Florian Weimer wrote: > I just noticed this is now public: > http://gaganpreet.in/blog/2013/07/24/kwallet-security-analysis/ > Short summary: kwallet uses Blowfish to encrypt its password > store, and despite an attempt at implementing CBC mode (in a > file called cbc.cc no less), it's actually ECB mode. That's unpleasant, but not really a fatal issue... > UTF-16 encoding combined with Blowfish's 64 bit block size means > there are just four password characters per block. But this is: any and all passwords, being used for encryption key generation, must be hashed, then salted, then hashed again. SHA-256 may be a good choice for generating Blowfish 256-bit key this way.
what kind of hashing and salting are you talking about? i don't think hashing and salting makes sense in the context that you were quoting above. Are you aware that kwallet stores a database of passwords that need to be able to be produced back for the user (or the user's applications) in the clear? --dkg
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Current thread:
- kwallet crypto misuse Florian Weimer (Jan 02)
- Re: kwallet crypto misuse cve-assign (Jan 02)
- Re: Re: kwallet crypto misuse Daniel Kahn Gillmor (Jan 02)
- Re: kwallet crypto misuse cve-assign (Jan 02)
- Re: Re: kwallet crypto misuse Kurt Seifried (Jan 02)
- Re: Re: kwallet crypto misuse Daniel Kahn Gillmor (Jan 02)
- Re: Re: kwallet crypto misuse Michael Samuel (Jan 02)
- Re: kwallet crypto misuse cve-assign (Jan 02)
- Re: kwallet crypto misuse gremlin (Jan 02)
- Re: kwallet crypto misuse Daniel Kahn Gillmor (Jan 03)
- Re: kwallet crypto misuse Simon McVittie (Jan 03)
- Re: kwallet crypto misuse Daniel Kahn Gillmor (Jan 03)
- Re: kwallet crypto misuse cve-assign (Jan 03)
- Re: kwallet crypto misuse Daniel Kahn Gillmor (Jan 03)
- Re: kwallet crypto misuse gremlin (Jan 04)