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gpgsm: Some more ECC support backported.

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* sm/certcheck.c (gpgsm_check_cert_sig): Map ECDSA OIDs.
* sm/misc.c (transform_sigval): Add ECC support.
--

GnuPG-bug-id: 6253
This commit is contained in:
Werner Koch 2022-11-14 17:10:26 +01:00
parent 3f845c8de7
commit 266a6602f0
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
2 changed files with 94 additions and 25 deletions
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10
sm/certcheck.c
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@ -357,9 +357,19 @@ gpgsm_check_cert_sig (ksba_cert_t issuer_cert, ksba_cert_t cert)
int use_pss = 0;
unsigned int saltlen;
/* Note that we map the 4 algos which current Libgcrypt versions are
* not aware of the OID. */
algo = gcry_md_map_name ( (algoid=ksba_cert_get_digest_algo (cert)));
if (!algo && algoid && !strcmp (algoid, "1.2.840.113549.1.1.10"))
use_pss = 1;
else if (!algo && algoid && !strcmp (algoid, "1.2.840.10045.4.3.1"))
algo = GCRY_MD_SHA224; /* ecdsa-with-sha224 */
else if (!algo && algoid && !strcmp (algoid, "1.2.840.10045.4.3.2"))
algo = GCRY_MD_SHA256; /* ecdsa-with-sha256 */
else if (!algo && algoid && !strcmp (algoid, "1.2.840.10045.4.3.3"))
algo = GCRY_MD_SHA384; /* ecdsa-with-sha384 */
else if (!algo && algoid && !strcmp (algoid, "1.2.840.10045.4.3.4"))
algo = GCRY_MD_SHA512; /* ecdsa-with-sha512 */
else if (!algo)
{
log_error ("unknown digest algorithm '%s' used certificate\n",