OpenSSL::PKey::DH#export

dh.export → aString

ext/openssl/ossl_pkey_dh.c View on GitHub ↗

static VALUE
ossl_dh_export(VALUE self)
{
    OSSL_3_const DH *dh;
    BIO *out;
    VALUE str;

    GetDH(self, dh);
    if (!(out = BIO_new(BIO_s_mem()))) {
        ossl_raise(eDHError, NULL);
    }
    if (!PEM_write_bio_DHparams(out, dh)) {
        BIO_free(out);
        ossl_raise(eDHError, NULL);
    }
    str = ossl_membio2str(out);

    return str;
}

Serializes the DH parameters to a PEM-encoding.

Note that any existing per-session public/private keys will not get encoded, just the Diffie-Hellman parameters will be encoded.

PEM-encoded parameters will look like:

-----BEGIN DH PARAMETERS-----
[...]
-----END DH PARAMETERS-----

See also public_to_pem (X.509 SubjectPublicKeyInfo) and private_to_pem (PKCS #8 PrivateKeyInfo or EncryptedPrivateKeyInfo) for serialization with the private or public key components.

See also #compute_key #generate_key! .new #initialize_copy also in 4.1 · 4.0 · 3.4 · 3.2 · 3.1 · 3.0

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