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gpg: Try hard to use MDC also for sign+symenc.

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* g10/encrypt.c (use_mdc): Make it a global func.
* g10/sign.c (sign_symencrypt_file): Use that function to decide
whether to use an MDC.
* tests/openpgp/conventional-mdc.test: Add a simple test case.
--

We used --force-mdc in sign+symenc mode (-cs) only with --force-mdc.
That broke our assumption from commit 625e292 (GnuPG 2.1.9) that all
uses of modern ciphers are using MDC.

Reported-by: Ben Kibbey <bjk@luxsci.net>
Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2015-10-12 09:31:44 +02:00
parent b0627ec259
commit 4584125802
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
4 changed files with 19 additions and 10 deletions
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1
g10/main.h
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@ -211,6 +211,7 @@ void display_online_help( const char *keyword );
/*-- encode.c --*/
int setup_symkey (STRING2KEY **symkey_s2k,DEK **symkey_dek);
int use_mdc (pk_list_t pk_list,int algo);
int encrypt_symmetric (const char *filename );
int encrypt_store (const char *filename );
int encrypt_crypt (ctrl_t ctrl, int filefd, const char *filename,