key. Default is 2048. Some <a href="#KDF"><b>KDF</b></a> implementations
    require an iteration count.</dd>
</dl>

<dl>
    <dt><a name="-iv"><strong>-iv</strong> <em>string</em></a></dt>
    <dd>Initialization vector (IV) to use. Required for some ciphers and GMAC.
    Other MACs use a fixed IV. Cipher modes CBC, CFB, and OFB all need an IV,
    while ECB and CTR modes do not. A new, random IV should (must for OFB) be
    created for each use. Think of the IV as a nonce
    (number used once), it's public but random and unpredictable. See the
   <a href="#tls::cipher"><b>tls::cipher</b></a> for iv_length and when
   required (length > 0). Max is 16 bytes. If not set, it will default to \x00
   fill data.</dd>
</dl>

<dl>
    <dt><a name="-key"><strong>-key</strong> <em>string</em></a></dt>
    <dd>Encryption key to use for cryptography function. Can be a binary or
    text string. Longer keys provide better protection. Used by ciphers, HMAC,
    some CMAC, and some KDF implementations. If the length of the key is &lt;
    <b>key_length</b> it will be padded. Max is 64 bytes. If &gt; key_length,
    it will be rejected.
    See the <a href="#tls::cipher"><b>tls::cipher</b></a> for key_length.</dd>
</dl>

<dl>
    <dt><a name="-mac"><strong>-mac</strong> <em>name</em></a></dt>
    <dd>Name of Message Authentication Code (MAC) to use.
    See <a href="#tls::mac"><b>tls::macs</b></a> command for the valid values.</dd>
</dl>

<dl>
    <dt><a name="-padding"><strong>-padding</strong> <em>boolean</em></a></dt>
    <dd>Specifies whether to use PKCS#7 padding or not for block ciphers. If
    true, 1 to block size number of pad bytes will be added to the output to
    pad to the next block size. Default is true.</dd>
</dl>

<dl>
    <dt><a name="-password"><strong>-password</strong> <em>string</em></a></dt>
    <dd>Password to use for some KDF functions. If not specified, the default
    value is used. Can be a binary or text string. For KDF commands, this is
    the same as the <b>-key</b> option.</dd>
</dl>

<br>
<h3><a name="GLOSSARY">GLOSSARY</a></h3>

<p>The following is a list of the terminology used in this package along with
brief definitions. For more details, please consult with the OpenSSL documentation.</p>
<table>
<tr><td>AAD</td><td>Additional Authenticated Data</td></tr>
<tr><td>AEAD</td><td>Authenticated Encryption with Associated Data</td></tr>
<tr><td>AES</td><td>Advanced Encryption Standard</td></tr>
<tr><td>CBC</td><td>AES Cipher Block Chaining mode</td></tr>
<tr><td>CFB</td><td>AES Cipher Feedback mode</td></tr>
<tr><td>CTR</td><td>AES Counter mode</td></tr>
<tr><td>ECB</td><td>AES Electronic Codebook mode</td></tr>
<tr><td>IV</td><td>Initialization vector</td></tr>
<tr><td>KDF</td><td>Key Derivation Function</td></tr>
<tr><td>MAC</td><td>Message Authenticated Code</td></tr>
<tr><td>MD</td><td>Message Digest</td></tr>
<tr><td>OFB</td><td>AES Output Feedback mode</td></tr>
<tr><td>SHA</td><td>Secure Hash Algorithm</td></tr>
<tr><td>SSL</td><td>Secure Sockets Layer</td></tr>
<tr><td>TLS</td><td>Transport Layer Security</td></tr>
<tr><td>XOF</td><td>Extendable-Output Function (aka variable length)</td></tr>
</table>

<br>
<h3><a name="EXAMPLES">EXAMPLES</a></h3>

<p>TBS</p>