帳戶資訊 API

public String encryptWithJWE(String plainText){
    X509Certificate publicCertificate = <fetch public cert>
    //get RSA public key
    final X509EncodedKeySpec publicKeySpec = new 
    X509EncodedKeySpec(publicCertificate.getPublicKey().getEncoded());
    final KeyFactory keyFactory = KeyFactory.getInstance("RSA");
    RSAPublicKey rsaPublicKey = (RSAPublicKey) keyFactory.generatePublic(publicKeySpec);
    //get keyID
    String keyID = certificateManager.getKid(publicCertificate);
    // Create JWE Header containing the needed metadata for encryption and decryption
    JWEHeader jweHeader = new JWEHeader.Builder(JWEAlgorithm.RSA_OAEP_256, EncryptionMethod.A256GCM)
        .type(JOSEObjectType.JWT)
        .customParam(IAT, System.currentTimeMillis())
        .keyID(keyID)
        .build();
/*

{
"alg":"RSA-OAEP-256",
"typ":"JWT",
"enc":"A256GCM",
"iat":<Time (in UTC) when JWE was issued, expressed in UNIX epoch time (seconds since 1 January, 1970)>,
"kid":<Key ID or subject key Identifier from the public key certificate>
}
*/
    JWEObject jweObject = new JWEObject(jweHeader, new Payload(plainText));
    RSAEncrypter encrypter = new RSAEncrypter(rsaPublicKey);
    jweObject.encrypt(encrypter);
    return jweObject.serialize();
    }

public String decryptJWE(String jweString) {
    PrivateKey privateKey = <fetch private key>;
    RSAPrivateKey rsaPrivateKey = (RSAPrivateKey) privateKey;
    JWEObject jweObject = JWEObject.parse(jweString);
    JWEHeader jweHeader = jweObject.getHeader();validateJweHeader(jweHeader);
    RSADecrypter rsaDecrypter = new RSADecrypter(rsaPrivateKey);
    jweObject.decrypt(rsaDecrypter);
    return jweObject.getPayload().toString();
}