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fix asn1_write_micalg() in asn_mime.c on GostR3411 and SHAKE 

Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/27567)
This commit is contained in:
Dr. David von Oheimb 2025-04-13 17:21:27 +02:00 committed by Tomas Mraz
parent 3c7812decd
commit e4c515833d
1 changed files with 18 additions and 4 deletions
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22
crypto/asn1/asn_mime.c
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@ -168,6 +168,19 @@ static int asn1_write_micalg(BIO *out, STACK_OF(X509_ALGOR) *mdalgs)
BIO_write(out, ",", 1);
write_comma = 1;
md_nid = OBJ_obj2nid(sk_X509_ALGOR_value(mdalgs, i)->algorithm);
/* RFC 8702 does not define a micalg for SHAKE, assuming "shake-<bitlen>" */
if (md_nid == NID_shake128) {
if (BIO_puts(out, "shake-128") < 0)
goto err;
continue;
}
if (md_nid == NID_shake256) {
if (BIO_puts(out, "shake-256") < 0)
goto err;
continue;
}
md = EVP_get_digestbynid(md_nid);
if (md && md->md_ctrl) {
int rv;
@ -204,15 +217,15 @@ static int asn1_write_micalg(BIO *out, STACK_OF(X509_ALGOR) *mdalgs)
case NID_id_GostR3411_94:
BIO_puts(out, "gostr3411-94");
goto err;
break;
case NID_id_GostR3411_2012_256:
BIO_puts(out, "gostr3411-2012-256");
goto err;
break;
case NID_id_GostR3411_2012_512:
BIO_puts(out, "gostr3411-2012-512");
goto err;
break;
default:
if (have_unknown) {
@ -272,7 +285,8 @@ int SMIME_write_ASN1_ex(BIO *bio, ASN1_VALUE *val, BIO *data, int flags,
BIO_printf(bio, "Content-Type: multipart/signed;");
BIO_printf(bio, " protocol=\"%ssignature\";", mime_prefix);
BIO_puts(bio, " micalg=\"");
asn1_write_micalg(bio, mdalgs);
if (!asn1_write_micalg(bio, mdalgs))
return 0;
BIO_printf(bio, "\"; boundary=\"----%s\"%s%s",
bound, mime_eol, mime_eol);
BIO_printf(bio, "This is an S/MIME signed message%s%s",