A PEM pasted from a text editor can carry bytes cryptography's parser
refuses outright: a UTF-8 BOM some Windows editors silently prepend,
CRLF line endings, and a stray blank line a paste can introduce
between the header/body/footer. None of those are meaningful in PEM,
but any of them surfaces as an opaque InvalidHeader with no hint of
what's wrong -- which is why the same certificate pasted from
Command Prompt's `type` (no BOM, no stray blank lines) loads fine
while the same file opened in an editor and copied doesn't (issue
#291).
Normalize at the point the pasted blob is first captured, not just
before minting the leaf cert: the same string is stored in the config
entry and reused to re-mint the leaf on a future reconfigure, so a
raw copy would keep failing every time it's read back, not just on
the first attempt.
Marc Billow
455ed5b27c