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sm: Support generation of card-based ed25519 CSR.

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* sm/call-agent.c (gpgsm_scd_pksign): Allow SHA512. Create proper
S-expression for EdDSA signature.
* sm/certreqgen.c (create_request): Force use of SHA512 when
using a ed25519 key.
* sm/misc.c (transform_sigval): Insert OID for ed25519.

--

GnuPG-bug-id: 4013
Signed-off-by: Damien Goutte-Gattat <dgouttegattat@incenp.org>
This commit is contained in:
Damien Goutte-Gattat via Gnupg-devel 2019-02-17 17:40:51 +00:00 • committed by NIIBE Yutaka
parent 74e9b579ca
commit 3cbdf896e6
3 changed files with 19 additions and 4 deletions
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7
sm/call-agent.c
View file

@ -354,6 +354,7 @@ gpgsm_scd_pksign (ctrl_t ctrl, const char *keyid, const char *desc,
case GCRY_MD_RMD160:hashopt = "--hash=rmd160"; break;
case GCRY_MD_MD5: hashopt = "--hash=md5"; break;
case GCRY_MD_SHA256:hashopt = "--hash=sha256"; break;
case GCRY_MD_SHA512:hashopt = "--hash=sha512"; break;
default:
return gpg_error (GPG_ERR_DIGEST_ALGO);
}
@ -417,6 +418,12 @@ gpgsm_scd_pksign (ctrl_t ctrl, const char *keyid, const char *desc,
sigbuflen/2, sigbuf + sigbuflen/2);
break;
case GCRY_PK_EDDSA:
rc = gcry_sexp_build (&sig, NULL, "(sig-val(eddsa(r%b)(s%b)))",
sigbuflen/2, sigbuf,
sigbuflen/2, sigbuf + sigbuflen/2);
break;
default:
rc = gpg_error (GPG_ERR_WRONG_PUBKEY_ALGO);
break;