crmf_lib.c: Make sure Ed signature for POPO is called without digest

Fixes #18184

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/18230)

(cherry picked from commit de56f726e1)
This commit is contained in:
Dr. David von Oheimb 2022-04-27 19:07:46 +02:00 committed by Dr. David von Oheimb
parent 78a599b98e
commit abd18d729a
2 changed files with 10 additions and 2 deletions

View File

@ -369,6 +369,8 @@ static int create_popo_signature(OSSL_CRMF_POPOSIGNINGKEY *ps,
EVP_PKEY *pkey, const EVP_MD *digest,
OSSL_LIB_CTX *libctx, const char *propq)
{
char name[80] = "";
if (ps == NULL || cr == NULL || pkey == NULL) {
ERR_raise(ERR_LIB_CRMF, CRMF_R_NULL_ARGUMENT);
return 0;
@ -379,6 +381,10 @@ static int create_popo_signature(OSSL_CRMF_POPOSIGNINGKEY *ps,
return 0;
}
if (EVP_PKEY_get_default_digest_name(pkey, name, sizeof(name)) > 0
&& strcmp(name, "UNDEF") == 0) /* at least for Ed25519, Ed448 */
digest = NULL;
return ASN1_item_sign_ex(ASN1_ITEM_rptr(OSSL_CRMF_CERTREQUEST),
ps->algorithmIdentifier, NULL, ps->signature, cr,
NULL, pkey, digest, libctx, propq);

View File

@ -62,11 +62,13 @@ OSSL_CRMF_MSG_push0_extension() pushes the X509 extension I<ext> to the
extensions in the certTemplate of I<crm>. Consumes I<ext>.
OSSL_CRMF_MSG_create_popo() creates and sets the Proof-of-Possession (POPO)
according to the method I<meth> in I<crm>.<
according to the method I<meth> in I<crm>.
The library context I<libctx> and property query string I<propq>,
may be NULL to select the defaults.
In case the method is OSSL_CRMF_POPO_SIGNATURE the POPO is calculated
using the private key I<pkey> and the digest method I<digest>.
using the private key I<pkey> and the digest method I<digest>,
where the I<digest> argument is ignored if I<pkey> is of a type (such as
Ed25519 and Ed448) that is implicitly associated with a digest alorithm.
I<meth> can be one of the following: