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common: New function cmp_canon_sexp.

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* common/sexputil.c (cmp_canon_sexp): New.
(cmp_canon_sexp_def_tcmp): New.
* common/t-sexputil.c (test_cmp_canon_sexp): Add a simple test.
--

To be used to fix
GnuPG-bug-id: 5061

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2020-09-11 15:23:22 +02:00
parent 9a94db1f66
commit b6ba6a79ce
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
4 changed files with 200 additions and 2 deletions
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6
common/util.h
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@ -185,6 +185,12 @@ gpg_error_t make_canon_sexp_pad (gcry_sexp_t sexp, int secure,
gpg_error_t keygrip_from_canon_sexp (const unsigned char *key, size_t keylen,
unsigned char *grip);
int cmp_simple_canon_sexp (const unsigned char *a, const unsigned char *b);
int cmp_canon_sexp (const unsigned char *a, size_t alen,
const unsigned char *b, size_t blen,
int (*tcmp)(void *ctx, int depth,
const unsigned char *aval, size_t avallen,
const unsigned char *bval, size_t bvallen),
void *tcmpctx);
unsigned char *make_simple_sexp_from_hexstr (const char *line,
size_t *nscanned);
int hash_algo_from_sigval (const unsigned char *sigval);