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* sign.c (hash_for, sign_file): When encrypting and signing at the same

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time, consult the various hash prefs to pick a hash algorithm to use.
Pass in a 160-bit hint if any of the signing keys are DSA.

* keydb.h, pkclist.c (select_algo_from_prefs, algo_available): Pass a
"hints" opaque pointer in to let the caller give hints as to what
algorithms would be acceptable.  The only current hint is for
PREFTYPE_HASH to require a 160-bit hash for DSA.  Change all callers in
encode.c (encode_crypt, encrypt_filter) and sign.c (sign_file).  If we
settle on MD5 as the best algorithm based solely on recepient keys and
SHA1 is also a possibility, use SHA1 unless the user intentionally chose
MD5.  This is as per 2440:13.

* exec.c (make_tempdir): Fix duplicated filename problem.
This commit is contained in:
David Shaw 2002-06-04 23:18:37 +00:00
parent ae02cf4630
commit fd08b13528
6 changed files with 115 additions and 20 deletions
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2
g10/keydb.h
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@ -166,7 +166,7 @@ void show_revocation_reason( PKT_public_key *pk, int mode );
int check_signatures_trust( PKT_signature *sig );
void release_pk_list( PK_LIST pk_list );
int build_pk_list( STRLIST remusr, PK_LIST *ret_pk_list, unsigned use );
int select_algo_from_prefs( PK_LIST pk_list, int preftype );
int select_algo_from_prefs( PK_LIST pk_list, int preftype, void *hint );
int select_mdc_from_pklist (PK_LIST pk_list);
/*-- skclist.c --*/