NID_id_smime_aa_msgSigDigest
if (!CMS_signed_add1_attr_by_NID(dest, NID_id_smime_aa_msgSigDigest,
OBJ_nid2obj(NID_id_smime_aa_msgSigDigest), -3,
{"id-smime-aa-msgSigDigest", "id-smime-aa-msgSigDigest", NID_id_smime_aa_msgSigDigest, 11, &so[1419]},