The download directory contains them in a file called SHASUMS.asc:
http://sourceforge.net/projects/bitcoin/files/Bitcoin/bitcoin-0.5.0/SHASUMS.asc/download
... which I'll reproduce here just because it is easy:
Code:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
d80b811852744aaa23bc7eddd23cdac4d56bb50f bitcoin-0.5.0-linux.tar.gz
86b0de71d601176ba49a84da59baf37ec3b561ec bitcoin-0.5.0-macosx.dmg
4649a78d3a55843b7ced690694b9b241a26f4d93 bitcoin-0.5.0-win32-setup.exe
97ef546d923e75f309a19f8a52b07affc0942948 bitcoin-0.5.0-win32.zip
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (Darwin)
iEYEARECAAYFAk7Kdy8ACgkQdYgkL74406g2ogCgiMfivGR4xJOacx/DnYfIiBO0
tlgAmwRYs7eKIgz1v3t1tj1I3NrrBfij
=SFwh
-----END PGP SIGNATURE-----
Hash: SHA1
d80b811852744aaa23bc7eddd23cdac4d56bb50f bitcoin-0.5.0-linux.tar.gz
86b0de71d601176ba49a84da59baf37ec3b561ec bitcoin-0.5.0-macosx.dmg
4649a78d3a55843b7ced690694b9b241a26f4d93 bitcoin-0.5.0-win32-setup.exe
97ef546d923e75f309a19f8a52b07affc0942948 bitcoin-0.5.0-win32.zip
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (Darwin)
iEYEARECAAYFAk7Kdy8ACgkQdYgkL74406g2ogCgiMfivGR4xJOacx/DnYfIiBO0
tlgAmwRYs7eKIgz1v3t1tj1I3NrrBfij
=SFwh
-----END PGP SIGNATURE-----