SecurityManager.cpp

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#include "include/SecurityManager.h"

SecurityManager::SecurityManager()
{
    m_appli = 0;
    m_secu = 0;
    m_gps = 0;
}

SecurityManager::SecurityManager(Manager *man)
{
    m_appli = (ParameterApplication*)man->hashMap["Application"];
    m_secu = (ParameterSecurity*)man->hashMap["Security"];
    m_gps = (FakeGPSProvider*)man->hashMap["GPS"];

    QFile file(m_secu->pathToPrivateKey());
    file.open(QIODevice::ReadOnly);
    m_privateKey = file.readAll();
    file.close();

    file.setFileName(m_secu->pathToCertificate());
    file.open(QIODevice::ReadOnly);
    m_certificate = file.readAll();
    file.close();
    decode_Certificate((unsigned char*)m_certificate.data(), &m_certif);
}

QByteArray SecurityManager::signPayload(QByteArray payload, SecurityProfile::e_securityProfileType profile)
{
    QByteArray signedPayload;

    switch (profile) {
    case SecurityProfile::securityProfile_cam:
        signedPayload = SecurityProfile_CAM::secureHeader(SignerInfoType_certificate_digest_with_sha256, m_certif, m_gps) + payload;
        signedPayload += securedTrailer(signedPayload);
        break;
    default:
        break;
    }

    return signedPayload;
}

QByteArray SecurityManager::securedTrailer(QByteArray payload)
{
    SecureTrailer_t trailer;

    TrailerField_t *field = (TrailerField_t*)calloc(1, sizeof *field);
    field->type = TrailerFieldType_signature;
    field->trailer_field.present = trailer_field_PR_signature_trailer_field;
    field->trailer_field.choice.signature_trailer_field.sign.algorithm = PublicKeyAlgorithm_ecdsa_nistp256_with_sha256;
    field->trailer_field.choice.signature_trailer_field.sign.sign.present = sign_PR_ecdsa_nistp256_with_sha256_signature;
    field->trailer_field.choice.signature_trailer_field.sign.sign.choice.ecdsa_nistp256_with_sha256_signature.ecdsa_signature;

    trailer.trailer_fields.list.array = (TrailerField_t**)calloc(1, sizeof *trailer.trailer_fields.list.array);
    trailer.trailer_fields.list.count = 0;
    trailer.trailer_fields.list.free = 0;
    trailer.trailer_fields.list.size = 0;
    trailer.trailer_fields.list.array[0] = (TrailerField_t*)calloc(1, sizeof *trailer.trailer_fields.list.array[0]);
    asn_sequence_add(&trailer.trailer_fields, field);

    return encode_SecureTrailer(trailer);
}