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| author | Simon Bünzli <zeniko@gmail.com> | 2014-09-01 22:11:03 +0200 |
|---|---|---|
| committer | Simon Bünzli <zeniko@gmail.com> | 2014-09-08 15:08:52 +0200 |
| commit | a55648c9d009cdd94977fc5b7152932e59c975ad (patch) | |
| tree | 1be3408d601386b3ce23130bc5c76466fb8f3933 /source/pdf/pdf-crypt.c | |
| parent | 621f2c0b3b913c59c0d3cc8ebedac1453caf7acb (diff) | |
| download | mupdf-a55648c9d009cdd94977fc5b7152932e59c975ad.tar.xz | |
Revert part of commit 5509a4ef7520bf0b5280ce7d6af8eb15b1b8b0f1
Even though the encryption key length isn't supposed to be taken from
the encryption dictionary's /Length for crypt version 4, other readers
such as Adobe's still use that value if a crypt filter's /Length is
missing.
See https://code.google.com/p/sumatrapdf/issues/detail?id=2710 for a
document where this makes a difference (or simply remove /Length from
the crypt filter in any document encrypted with crypt version 4 and an
AESV2 crypt filter).
Diffstat (limited to 'source/pdf/pdf-crypt.c')
| -rw-r--r-- | source/pdf/pdf-crypt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/source/pdf/pdf-crypt.c b/source/pdf/pdf-crypt.c index ef87655e..d502c378 100644 --- a/source/pdf/pdf-crypt.c +++ b/source/pdf/pdf-crypt.c @@ -180,7 +180,7 @@ pdf_new_crypt(fz_context *ctx, pdf_obj *dict, pdf_obj *id) /* Determine encryption key length */ crypt->length = 40; - if (crypt->v == 2) + if (crypt->v == 2 || crypt->v == 4) { obj = pdf_dict_gets(dict, "Length"); if (pdf_is_int(obj)) |