public static PublicKey loadPublicKey()

in callouts/java/service-callout/src/main/java/example/JwtAuth.java [95:114]

• 19 lines of code
• 3 McCabe index (conditional complexity)

    public static PublicKey loadPublicKey(String pemFilePath) throws IOException, GeneralSecurityException {
        try (InputStream is = JwtAuth.class.getClassLoader().getResourceAsStream(pemFilePath)) {
            if (is == null) {
                throw new IOException("PEM file not found: " + pemFilePath);
            }

            try (PEMParser pemParser = new PEMParser(new InputStreamReader(is, StandardCharsets.UTF_8))) {
                Object object = pemParser.readObject();
                if (object instanceof SubjectPublicKeyInfo) {
                    SubjectPublicKeyInfo spki = (SubjectPublicKeyInfo) object;
                    byte[] encoded = spki.getEncoded();
                    X509EncodedKeySpec keySpec = new X509EncodedKeySpec(encoded);
                    KeyFactory keyFactory = KeyFactory.getInstance("RSA");
                    return keyFactory.generatePublic(keySpec);
                } else {
                    throw new IllegalArgumentException("Invalid PEM file: Not a valid SubjectPublicKeyInfo");
                }
            }
        }
    }