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-rw-r--r--source/pdf/pdf-crypt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/source/pdf/pdf-crypt.c b/source/pdf/pdf-crypt.c
index daeead1a..dda53cf0 100644
--- a/source/pdf/pdf-crypt.c
+++ b/source/pdf/pdf-crypt.c
@@ -318,7 +318,7 @@ pdf_parse_crypt_filter(fz_context *ctx, pdf_crypt_filter *cf, pdf_crypt *crypt,
if ((cf->length % 8) != 0)
fz_throw(ctx, FZ_ERROR_GENERIC, "invalid key length: %d", cf->length);
- if ((crypt->r == 1 || crypt->r == 2 || crypt->r == 4) &&
+ if ((crypt->r == 1 || crypt->r == 2 || crypt->r == 3 || crypt->r == 4) &&
(cf->length < 0 || cf->length > 128))
fz_throw(ctx, FZ_ERROR_GENERIC, "invalid key length: %d", cf->length);
if ((crypt->r == 5 || crypt->r == 6) && cf->length != 256)