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sm: Exclude rsaPSS from de-vs compliance mode.

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* common/compliance.h (PK_ALGO_FLAG_RSAPSS): New.
* common/compliance.c (gnupg_pk_is_compliant): Add arg alog_flags and
test rsaPSS.  Adjust all callers.
(gnupg_pk_is_allowed): Ditto.
* sm/misc.c (gpgsm_ksba_cms_get_sig_val): New wrapper function.
(gpgsm_get_hash_algo_from_sigval): New.
* sm/certcheck.c (gpgsm_check_cms_signature): Change type of sigval
arg.  Add arg pkalgoflags.  Use the PK_ALGO_FLAG_RSAPSS.
* sm/verify.c (gpgsm_verify): Use the new wrapper and new fucntion to
also get the algo flags.  Pass algo flags along.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2020-07-03 15:47:55 +02:00
parent c1663c690b
commit 969abcf40c
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
16 changed files with 175 additions and 89 deletions
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12
common/compliance.c
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@ -96,6 +96,7 @@ gnupg_initialize_compliance (int gnupg_module_name)
* both are compatible from the point of view of this function. */
int
gnupg_pk_is_compliant (enum gnupg_compliance_mode compliance, int algo,
unsigned int algo_flags,
gcry_mpi_t key[], unsigned int keylength,
const char *curvename)
{
@ -148,6 +149,10 @@ gnupg_pk_is_compliant (enum gnupg_compliance_mode compliance, int algo,
result = (keylength == 2048
|| keylength == 3072
|| keylength == 4096);
/* rsaPSS was not part of the evaluation and thus we don't
* claim compliance. */
if ((algo_flags & PK_ALGO_FLAG_RSAPSS))
result = 0;
break;
case is_dsa:
@ -197,7 +202,8 @@ gnupg_pk_is_compliant (enum gnupg_compliance_mode compliance, int algo,
* they produce, and liberal in what they accept. */
int
gnupg_pk_is_allowed (enum gnupg_compliance_mode compliance,
enum pk_use_case use, int algo, gcry_mpi_t key[],
enum pk_use_case use, int algo,
unsigned int algo_flags, gcry_mpi_t key[],
unsigned int keylength, const char *curvename)
{
int result = 0;
@ -228,6 +234,10 @@ gnupg_pk_is_allowed (enum gnupg_compliance_mode compliance,
default:
log_assert (!"reached");
}
/* rsaPSS was not part of the evaluation and thus we don't
* claim compliance. */
if ((algo_flags & PK_ALGO_FLAG_RSAPSS))
result = 0;
break;
case PUBKEY_ALGO_DSA: