return evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID, 0, pnid);
}
+int EVP_PKEY_supports_digest_nid(EVP_PKEY *pkey, int nid)
+{
+ int rv, default_nid;
+
+ rv = evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_SUPPORTS_MD_NID, nid, NULL);
+ if (rv == -2) {
+ /*
+ * If there is a mandatory default digest and this isn't it, then
+ * the answer is 'no'.
+ */
+ rv = EVP_PKEY_get_default_digest_nid(pkey, &default_nid);
+ if (rv == 2)
+ return (nid == default_nid);
+ /* zero is an error from EVP_PKEY_get_default_digest_nid() */
+ if (rv == 0)
+ return -1;
+ }
+ return rv;
+}
+
int EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY *pkey,
const unsigned char *pt, size_t ptlen)
{
The pkey_ctrl() method adds extra algorithm specific control.
It's called by L<EVP_PKEY_get_default_digest_nid(3)>,
+L<EVP_PKEY_supports_digest_nid(3)>,
L<EVP_PKEY_set1_tls_encodedpoint(3)>,
L<EVP_PKEY_get1_tls_encodedpoint(3)>, L<PKCS7_SIGNER_INFO_set(3)>,
L<PKCS7_RECIP_INFO_set(3)>, ...
=head1 NOTES
-For all current standard OpenSSL public key algorithms SHA1 is returned.
+For all current standard OpenSSL public key algorithms SHA256 is returned.
=head1 RETURN VALUES
L<EVP_PKEY_CTX_new(3)>,
L<EVP_PKEY_sign(3)>,
+L<EVP_PKEY_supports_digest_nid(3)>,
L<EVP_PKEY_verify(3)>,
L<EVP_PKEY_verify_recover(3)>,
--- /dev/null
+=pod
+
+=head1 NAME
+
+EVP_PKEY_supports_digest_nid - indicate support for signature digest
+
+=head1 SYNOPSIS
+
+ #include <openssl/evp.h>
+ int EVP_PKEY_supports_digest_nid(EVP_PKEY *pkey, int nid);
+
+=head1 DESCRIPTION
+
+The EVP_PKEY_supports_digest_nid() function queries whether the message digest
+NID B<nid> is supported for public key signature operations associated with key
+B<pkey>.
+
+=head1 NOTES
+
+If the EVP_PKEY implementation does not explicitly support this method, but
+L<EVP_PKEY_get_default_digest_nid(3)> returns a mandatory digest result, then
+only that mandatory digest will be supported.
+
+=head1 RETURN VALUES
+
+The EVP_PKEY_supports_digest_nid() function returns 1 if the message digest
+algorithm identified by B<nid> can be used for public key signature operations
+associated with key B<pkey> and 0 if it cannot be used. It returns a negative
+value for failure. In particular a return value of -2 indicates the query
+operation is not supported by the public key algorithm.
+
+=head1 SEE ALSO
+
+L<EVP_PKEY_CTX_new(3)>,
+L<EVP_PKEY_get_default_digest_nid(3)>,
+L<EVP_PKEY_sign(3)>,
+L<EVP_PKEY_verify(3)>,
+L<EVP_PKEY_verify_recover(3)>,
+
+=head1 HISTORY
+
+This function was first added to OpenSSL 1.1.2.
+
+=head1 COPYRIGHT
+
+Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
+
+Licensed under the OpenSSL license (the "License"). You may not use
+this file except in compliance with the License. You can obtain a copy
+in the file LICENSE in the source distribution or at
+L<https://www.openssl.org/source/license.html>.
+
+=cut
int indent, ASN1_PCTX *pctx);
int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid);
+int EVP_PKEY_supports_digest_nid(EVP_PKEY *pkey, int nid);
int EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY *pkey,
const unsigned char *pt, size_t ptlen);
# define ASN1_PKEY_CTRL_SET1_TLS_ENCPT 0x9
# define ASN1_PKEY_CTRL_GET1_TLS_ENCPT 0xa
+# define ASN1_PKEY_CTRL_SUPPORTS_MD_NID 0xb
int EVP_PKEY_asn1_get_count(void);
const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx);
static int has_usable_cert(SSL *s, const SIGALG_LOOKUP *sig, int idx)
{
const SIGALG_LOOKUP *lu;
- int mdnid, pknid, default_mdnid;
- int mandatory_md = 0;
+ int mdnid, pknid, supported;
size_t i;
/* TLS 1.2 callers can override lu->sig_idx, but not TLS 1.3 callers. */
idx = sig->sig_idx;
if (!ssl_has_cert(s, idx))
return 0;
- /* If the EVP_PKEY reports a mandatory digest, allow nothing else. */
- ERR_set_mark();
- switch (EVP_PKEY_get_default_digest_nid(s->cert->pkeys[idx].privatekey,
- &default_mdnid)) {
- case 2:
- mandatory_md = 1;
- break;
- case 1:
- break;
- default: /* If it didn't report a mandatory NID, for whatever reasons,
- * just clear the error and allow all hashes to be used. */
- ERR_pop_to_mark();
- }
if (s->s3->tmp.peer_cert_sigalgs != NULL) {
for (i = 0; i < s->s3->tmp.peer_cert_sigalgslen; i++) {
lu = tls1_lookup_sigalg(s->s3->tmp.peer_cert_sigalgs[i]);
if (lu == NULL
|| !X509_get_signature_info(s->cert->pkeys[idx].x509, &mdnid,
&pknid, NULL, NULL)
- || (mandatory_md && mdnid != default_mdnid))
+ /*
+ * TODO this does not differentiate between the
+ * rsa_pss_pss_* and rsa_pss_rsae_* schemes since we do not
+ * have a chain here that lets us look at the key OID in the
+ * signing certificate.
+ */
+ || mdnid != lu->hash
+ || pknid != lu->sig)
continue;
- /*
- * TODO this does not differentiate between the
- * rsa_pss_pss_* and rsa_pss_rsae_* schemes since we do not
- * have a chain here that lets us look at the key OID in the
- * signing certificate.
- */
- if (mdnid == lu->hash && pknid == lu->sig)
- return 1;
+
+ ERR_set_mark();
+ supported = EVP_PKEY_supports_digest_nid(s->cert->pkeys[idx].privatekey,
+ mdnid);
+ if (supported == 0)
+ continue;
+ else if (supported < 0)
+ {
+ /* If it didn't report a mandatory NID, for whatever reasons,
+ * just clear the error and allow all hashes to be used. */
+ ERR_pop_to_mark();
+ }
+ return 1;
}
return 0;
}
- return !mandatory_md || sig->hash == default_mdnid;
+ supported = EVP_PKEY_supports_digest_nid(s->cert->pkeys[idx].privatekey,
+ sig->hash);
+ if (supported == 0)
+ return 0;
+ else if (supported < 0)
+ ERR_clear_error();
+
+ return 1;
}
/*
EVP_MAC_do_all_sorted 4551 1_1_2 EXIST::FUNCTION:
EVP_str2ctrl 4552 1_1_2 EXIST::FUNCTION:
EVP_hex2ctrl 4553 1_1_2 EXIST::FUNCTION:
+EVP_PKEY_supports_digest_nid 4554 1_1_2 EXIST::FUNCTION:
projects / oweals / openssl.git / commitdiff