security-and-privacy/gnupg
security-and-privacy/gnupg
1
0
Fork 0
mirror of git://git.gnupg.org/gnupg.git synced 2025-07-02 22:46:30 +02:00
Code Activity

gpg: Print a warning for too much data encrypted with 3DES et al.

Browse source 
* g10/filter.h (cipher_filter_context_t): Remove unused filed
'create_mdc'.  Turn field 'header' into a bit field.  Add new fields
'short_blklen_warn' and 'short_blklen_count'.
* g10/cipher.c (write_header): Print a warning if MDC is not used.
(cipher_filter): Print a warning for long messages encrypted with a
short block length algorithm.
--

Note that to test this warning in a reliable way compression needs to
be disabled.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2017-12-13 13:02:34 +01:00
parent b5333e13cb
commit 416cf9e9be
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
2 changed files with 26 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

5
g10/filter.h
View file

@ -92,10 +92,11 @@ typedef struct {
DEK *dek;
u32 datalen;
gcry_cipher_hd_t cipher_hd;
int header;
unsigned int wrote_header : 1;
unsigned int short_blklen_warn : 1;
unsigned long short_blklen_count;
gcry_md_hd_t mdc_hash;
byte enchash[20];
int create_mdc; /* flag will be set by the cipher filter */
} cipher_filter_context_t;