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instance method

OpenSSL::PKey::EC#dh_compute_key

ec.dh_compute_key(pubkey) → string

ext/openssl/lib/openssl/pkey.rb View on GitHub ↗

# File tmp/rubies/ruby-3.1.3/ext/openssl/lib/openssl/pkey.rb, line 284
def dh_compute_key(pubkey)
  obj = OpenSSL::ASN1.Sequence([
    OpenSSL::ASN1.Sequence([
      OpenSSL::ASN1.ObjectId("id-ecPublicKey"),
      group.to_der,
    ]),
    OpenSSL::ASN1.BitString(pubkey.to_octet_string(:uncompressed)),
  ])
  derive(OpenSSL::PKey.read(obj.to_der))
end

Derives a shared secret by ECDH. pubkey must be an instance of OpenSSL::PKey::EC::Point and must belong to the same group.

This method is provided for backwards compatibility, and calls derive internally.

See also #check_key #dsa_sign_asn1 .new #dsa_verify_asn1 also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.0

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