I should replace my key long time ago, after there are security flaws has been identified in SHA-1. The US NIST also suggested to transit to stronger SHA-2 hash functions.

I followed the key replacement rules of Debian and Apache and created the new key. If you have validated my old key, Here is my transition statement for the new new 4096 bit RSA key -

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1,SHA512


I am transitioning GPG keys from an old 1024-bit DSA key to a new
4096-bit RSA key. The old key will continue to be valid for some
time, but I prefer all new correspondence to be encrypted in the
new key, and will be making all signatures going forward with the
new key.

This transition document is signed with both keys to validate the
transition.

If you have signed my old key, I would appreciate signatures on my new
key as well, provided that your signing policy permits that without
reauthenticating me.

The old key, which I am transitional away from, is:

pub   1024D/DC76FEB9 2004-09-18 Rex Tsai 
 Primary key fingerprint: 1700 7040 CBD7 5DB4 4956  959B 3A5E 166D DC76 FEB9

The new key, to which I am transitioning, is:

pub   4096R/3860D2A5 2011-05-20 Rex Tsai (蔡志展) 
 Primary key fingerprint: CDC8 966D A547 6B1F CEB8  6D49 86A6 03D4 3860 D2A5

To fetch the full new key from a public key server using GnuPG, run:

  gpg --keyserver keys.gnupg.net --recv-key 3860D2A5

If you have already validated my old key, you can then validate that the
new key is signed by my old key:

  gpg --check-sigs 3860D2A5

If you are satisfied that you've got the right key, and the UIDs match
what you expect, I'd appreciate it if you would sign my new key.

If you then want to sign my new key, a simple and safe way to do that is
by using caff (shipped in Debian as part of the "signing-party" package)
as follows:

  caff 3860D2A5

In the other way, you can sign the key and send it to me as following 
commands:

gpg --sign-key 3860D2A5
gpg --armor --export 3860D2A5 | mail -s 'OpenPGP Signatures' \
        chihchun@kalug.linux.org.tw
gpg --keyserver pgp.mit.edu --send-key 3860D2A5

Please contact me via e-mail at  if you have
any questions about this document or this transition.

Thanks.

Regards
Rex Tsai, 2011-05-21
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