Using Java to decrypt openssl aes-256-cbc using provided key and iv

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You should use something like this:

InputStream cipherInputStream = null;
try {
    final StringBuilder output = new StringBuilder();
    final byte[] secretKey = javax.xml.bind.DatatypeConverter.parseHexBinary("E4A38479A2349177EAE6038A018483318350E7F5430BDC8F82F1974715CB54E5");
    final byte[] initVector = javax.xml.bind.DatatypeConverter.parseHexBinary("629E2E1500B6BA687A385D410D5B08E3");
    final Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(secretKey, "AES"), new IvParameterSpec(initVector, 0, cipher.getBlockSize()));
    cipherInputStream = new CipherInputStream(new FileInputStream("text_ENCRYPTED"), cipher);

    final String charsetName = "UTF-8";

    final byte[] buffer = new byte[8192];
    int read = cipherInputStream.read(buffer);

    while (read > -1) {
        output.append(new String(buffer, 0, read, charsetName));
        read = cipherInputStream.read(buffer);
    }

    System.out.println(output);
} finally {
    if (cipherInputStream != null) {
        cipherInputStream.close();
    }
}

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