@Override
        int paddedBlockSizeBytes() {
            int paddedBlockSizeBytes = keySizeBytes();
            // Size described in step 2 of decoding algorithm, but extra byte
            // needed to make sure it's smaller than the RSA key modulus size.
            // https://tools.ietf.org/html/rfc2437#section-9.1.1.2
            return paddedBlockSizeBytes - (2 * oaepMdSizeBytes + 2);
        }
Returns {@code true} if the cipher has been initialized.
common/src/main/java/org/conscrypt/OpenSSLCipherRSA.java