protected void engineInitVerify()

in extensions/ssh/runtime/src/main/java/org/apache/camel/quarkus/component/ssh/runtime/SubstituteEdDSAEngine.java [48:77]

26 lines of code
7 McCabe index (conditional complexity)


    protected void engineInitVerify(PublicKey publicKey) throws InvalidKeyException {
        reset();
        if (publicKey instanceof EdDSAPublicKey) {
            key = (EdDSAPublicKey) publicKey;

            if (digest == null) {
                // Instantiate the digest from the key parameters
                try {
                    digest = MessageDigest.getInstance(key.getParams().getHashAlgorithm());
                } catch (NoSuchAlgorithmException e) {
                    throw new InvalidKeyException(
                            "cannot get required digest " + key.getParams().getHashAlgorithm() + " for private key.");
                }
            } else if (!key.getParams().getHashAlgorithm().equals(digest.getAlgorithm()))
                throw new InvalidKeyException("Key hash algorithm does not match chosen digest");
        } //following line differs from the original method
        else if (publicKey.getFormat().equals("X.509")) {
            // X509Certificate will sometimes contain an X509Key rather than the EdDSAPublicKey itself; the contained
            // key is valid but needs to be instanced as an EdDSAPublicKey before it can be used.
            EdDSAPublicKey parsedPublicKey;
            try {
                parsedPublicKey = new EdDSAPublicKey(new X509EncodedKeySpec(publicKey.getEncoded()));
            } catch (InvalidKeySpecException ex) {
                throw new InvalidKeyException("cannot handle X.509 EdDSA public key: " + publicKey.getAlgorithm());
            }
            engineInitVerify(parsedPublicKey);
        } else {
            throw new InvalidKeyException("cannot identify EdDSA public key: " + publicKey.getClass());
        }
    }