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gpgsm: Allow ECC encryption keys with just keyAgreement specified.

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* sm/certlist.c (cert_usage_p): Allow keyAgreement for ECC.
* sm/fingerprint.c (gpgsm_is_ecc_key): New.
--

For ECC encryption keys keyAgreement is the keyUsage we want.
This commit is contained in:
Werner Koch 2022-10-24 17:38:49 +02:00
parent 50efcf2eb0
commit 6bd0dd762c
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
3 changed files with 11 additions and 1 deletions
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3
sm/certlist.c
View File

@ -170,7 +170,8 @@ cert_usage_p (ksba_cert_t cert, int mode, int silent)
}
encr_bits = (KSBA_KEYUSAGE_KEY_ENCIPHERMENT|KSBA_KEYUSAGE_DATA_ENCIPHERMENT);
if ((opt.compat_flags & COMPAT_ALLOW_KA_TO_ENCR))
if ((opt.compat_flags & COMPAT_ALLOW_KA_TO_ENCR)
|| gpgsm_is_ecc_key (cert))
encr_bits |= KSBA_KEYUSAGE_KEY_AGREEMENT;
sign_bits = (KSBA_KEYUSAGE_DIGITAL_SIGNATURE|KSBA_KEYUSAGE_NON_REPUDIATION);

8
sm/fingerprint.c
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@ -306,6 +306,14 @@ gpgsm_get_key_algo_info (ksba_cert_t cert, unsigned int *nbits)
}
/* Return true if CERT is an ECC key. */
int
gpgsm_is_ecc_key (ksba_cert_t cert)
{
return GCRY_PK_ECC == gpgsm_get_key_algo_info2 (cert, NULL, NULL);
}
/* This is a wrapper around pubkey_algo_string which takes a KSBA
* certificate instead of a Gcrypt public key. Note that this
* function may return NULL on error. */

1
sm/gpgsm.h
View File

@ -324,6 +324,7 @@ char *gpgsm_get_keygrip_hexstring (ksba_cert_t cert);
int gpgsm_get_key_algo_info (ksba_cert_t cert, unsigned int *nbits);
int gpgsm_get_key_algo_info2 (ksba_cert_t cert, unsigned int *nbits,
char **r_curve);
int gpgsm_is_ecc_key (ksba_cert_t cert);
char *gpgsm_pubkey_algo_string (ksba_cert_t cert, int *r_algoid);
gcry_mpi_t gpgsm_get_rsa_modulus (ksba_cert_t cert);
char *gpgsm_get_certid (ksba_cert_t cert);