Nikos Mavrogiannopoulos n.mavrogiannopoulos@gmail.com writes:
I believe I took them from: http://keccak.noekeon.org/files.html
The latest testvectors I find there are http://keccak.noekeon.org/KeccakKAT-3.zip, which seem to be the old version, SHA3-256("") == C5D2460186F7233C927E7DB2DCC703C0E500B653CA82273B7BFAD8045D85A470.
Hmm. Looks like the updated testvectors now live at at https://github.com/gvanas/KeccakCodePackage/tree/master/TestVectors
E.g., https://github.com/gvanas/KeccakCodePackage/blob/master/TestVectors/ShortMsg... says that SHA3-256("") == A7FFC6F8BF1ED76651C14756A061D662F580FF4DE43B49FA82D80A4B80F8434A.
Regards, /Niels