Sorry, I forgot about timezone variation. An updated patch is attached. Regards, Reiner
diff --git a/debian/patches/deterministic-latex.patch b/debian/patches/deterministic-latex.patch
index f9cbb05..b9d426c 100644
--- a/debian/patches/deterministic-latex.patch
+++ b/debian/patches/deterministic-latex.patch
@@ -16,7 +16,7 @@ Index: libtomcrypt/makefile
rm -f doc/crypt.pdf $(LEFTOVERS)
+ cp crypt.tex crypt.bak
+ touch --reference=crypt.tex crypt.bak
-+ (echo "\\def\\fixedpdfdate{"; date +'D:%Y%m%d%H%M%S%:z' -d @$$(stat --format=%Y crypt.tex) | sed "s/:\([0-9][0-9]\)$$/'\1'}/g") > crypt-deterministic.tex
++ (echo "\\def\\fixedpdfdate{"; date +'D:%Y%m%d%H%M%S%:z' -u -d @$${SOURCE_DATE_EPOCH:-$$(stat --format=%Y crypt.tex)} | sed "s/:\([0-9][0-9]\)$$/'\1'}/g") > crypt-deterministic.tex
+ echo "\\pdfinfo{" >> crypt-deterministic.tex
+ echo "/CreationDate (\fixedpdfdate)" >> crypt-deterministic.tex
+ echo "/ModDate (\fixedpdfdate) }" >> crypt-deterministic.tex
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