Не работает функция import() подписи из памяти

[nshdigt]

Примерно такой тест:
console.log("Export");
var cms;
var buf;
cms = new trusted.cms.SignedData();
buf = cms.export(trusted.DataFormat.PEM);
assert.equal(buf.length !==0, true, "Wrong sign export");

console.log("Import");
var cms;
cms = new trusted.cms.SignedData();
cms.import(buf, trusted.DataFormat.PEM);
// console.log(cms.certificates().length);
// assert.equal(cms.signers().length, 1, "Wrong signers length");
// assert.equal(cms.certificates().length, 1, "Wrong certificates length");
// assert.equal(cms.isDetached(), false, "Detached");

[algv]

Error: read Error read cms
../src/wrapper/cms/signed_data.cpp:127
read PEM_read_bio_CMS
../src/wrapper/cms/signed_data.cpp:93

140031159080832:error:0906D06C:PEM routines:PEM_read_bio:no start line:../deps/openssl/openssl/crypto/pem/pem_lib.c:701:Expecting: CMS