Method: OpenSSL::PKey::DH#to_der

Defined in:
ossl_pkey_dh.c

#to_der ⇒ aString

Serializes the DH parameters to a DER-encoding

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

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



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# File 'ossl_pkey_dh.c', line 267

static VALUE
ossl_dh_to_der(VALUE self)
{
    OSSL_3_const DH *dh;
    unsigned char *p;
    long len;
    VALUE str;

    GetDH(self, dh);
    if((len = i2d_DHparams(dh, NULL)) <= 0)
  ossl_raise(eDHError, NULL);
    str = rb_str_new(0, len);
    p = (unsigned char *)RSTRING_PTR(str);
    if(i2d_DHparams(dh, &p) < 0)
  ossl_raise(eDHError, NULL);
    ossl_str_adjust(str, p);

    return str;
}