jwk->public-key (clj)

  Reference:
  https://tools.ietf.org/html/rfc8037#section-2"
  (:require [buddy.core.keys.jwk.proto :as proto]
            [buddy.core.hash :as hash]
            [cheshire.core :as json])
  (:import (java.io StringWriter)
           (com.fasterxml.jackson.core JsonGenerator)))

(defmethod proto/jwk->public-key "OKP"
  [jwk]
  (jwkokp->public-key jwk))

(ns buddy.core.keys.jwk.rsa
  "JWK support for RSA keys"
  (:require [buddy.core.codecs.base64 :as b64]
            [buddy.core.codecs :as codecs]
            [buddy.core.keys.jwk.proto :as proto]
            [buddy.core.hash :as hash]
            [cheshire.core :as json])
  (:import (java.security.interfaces RSAPrivateKey RSAPublicKey)
           (java.io StringWriter)
           (com.fasterxml.jackson.core JsonGenerator)
           (java.security KeyFactory)
           (java.security.spec RSAPrivateKeySpec RSAPublicKeySpec)))

(defmethod proto/jwk->public-key "RSA"
  [jwk]
  (let [n (proto/b64str->bigint (:n jwk))
        e (proto/b64str->bigint (:e jwk))
        kf (KeyFactory/getInstance "RSA" "BC")]
    (.generatePublic kf (RSAPublicKeySpec. n e))))