Genrating JsonWebKey

JsonWebKey receiverJwk = null; try { receiverJwk = new EllipticCurveJsonWebKey((ECPublicKey)KeyFactory.getInstance("EC", "SC").generatePublic(new X509EncodedKeySpec(Base64.getDecoder().decode("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")))); } catch (InvalidKeySpecException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } catch (NoSuchAlgorithmException e1) { // TODO Auto-generated catch block e1.printStackTrace(); }

java.security.spec.InvalidKeySpecException: java.security.InvalidKeyException: IOException: Only named ECParameters supported at sun.security.ec.ECKeyFactory.engineGeneratePublic(ECKeyFactory.java:157) at java.security.KeyFactory.generatePublic(Unknown Source) at Main.a(Main.java:53) at Main.main(Main.java:37) Caused by: java.security.InvalidKeyException: IOException: Only named ECParameters supported at sun.security.x509.X509Key.decode(Unknown Source) at sun.security.x509.X509Key.decode(Unknown Source) at sun.security.ec.ECPublicKeyImpl.<init>(ECPublicKeyImpl.java:69) at sun.security.ec.ECKeyFactory.implGeneratePublic(ECKeyFactory.java:219) at sun.security.ec.ECKeyFactory.engineGeneratePublic(ECKeyFactory.java:153) ... 3 more Exception in thread "main" java.lang.NullPointerException at Main.a(Main.java:64) at Main.main(Main.java:37)

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