Sefer HaTerumah is a sefer on Issur veHetter written by R' Baruch MiRegensburg, the student of R' Eliezer MiMitz, not, R' Baruch MiMagence, who wrote Sefer HaChochmah.[1]
Sefer HaTerumah uses the Ri Baal HaTosafot, the author's rebbe, as a foundation.[2]