Algorithm 11 not available

Blumenthal, Uri ublument at
Fri Apr 27 17:34:46 CEST 2007

Since SHA224 is part of the NIST standard, and TIGER isn't - I question
this decision and hope that GPG-2 team will reconsider.

Thank you!
Uri Blumenthal

-----Original Message-----
From: gnupg-users-bounces at
[mailto:gnupg-users-bounces at] On Behalf Of Peter S. May
Sent: Friday, April 27, 2007 11:20 AM
To: gnupg-users at
Subject: Re: Algorithm 11 not available

Charly Avital wrote:
> It *would seem* that it is gpg2 (not gpg) that does not support

Confirmed.  1.4.7 and 2.0.3 (both from source) are also on my system.

$ (gpg --version; gpg2 --version) | grep 'Hash:'
Hash: MD5, SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
Hash: MD5, SHA1, RIPEMD160, TIGER192, SHA256, SHA384, SHA512

In other words:
1.4.7 supports SHA224 but not TIGER192.
2.0.3 supports TIGER192 but not SHA224.

I myself was curious why SHA224 was inexplicably dropped.  Not that I
assume many people use it, but it seems a bit arbitrary.  Is there an
explanation, wk?


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