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instance method

OpenSSL::PKey::DH#generate_key!

dh.generate_key! → self

ext/openssl/ossl_pkey_dh.c View on GitHub ↗

static VALUE
ossl_dh_generate_key(VALUE self)
{
    DH *dh;

    GetDH(self, dh);
    if (!DH_generate_key(dh))
        ossl_raise(eDHError, "Failed to generate key");
    return self;
}

Generates a private and public key unless a private key already exists. If this DH instance was generated from public DH parameters (e.g. by encoding the result of DH#public_key), then this method needs to be called first in order to generate the per-session keys before performing the actual key exchange.

Example

dh = OpenSSL::PKey::DH.new(2048)
public_key = dh.public_key #contains no private/public key yet
public_key.generate_key!
puts public_key.private? # => true

See also #export #initialize_copy #compute_key #params also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1

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