e204. verifying a signature.txt

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See also e198 Generating a Public/Private Key Pair and e202 Listing All Available Signature Algorithms. 
    // Verifies the signature for the given buffer of bytes using the public key.
    public static boolean verifySignature(PublicKey key, byte[] buffer, byte[] signature) {
        try {
            Signature sig = Signature.getInstance(key.getAlgorithm());
            sig.initVerify(key);
            sig.update(buffer, 0, buffer.length);
            return sig.verify(signature);
        } catch (SignatureException e) {
        } catch (InvalidKeyException e) {
        } catch (NoSuchAlgorithmException e) {
        }
        return false;
    }