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<?xml version="1.0" encoding="utf-8"?>
<refentry xml:id="function.rnp-op-generate-key" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>rnp_op_generate_key</refname>
<refpurpose>Generate key</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type class="union"><type>string</type><type>false</type></type><methodname>rnp_op_generate_key</methodname>
<methodparam><type>RnpFFI</type><parameter>ffi</parameter></methodparam>
<methodparam><type>string</type><parameter>userid</parameter></methodparam>
<methodparam><type>string</type><parameter>key_alg</parameter></methodparam>
<methodparam choice="opt"><type>string</type><parameter>sub_alg</parameter></methodparam>
<methodparam choice="opt"><type>array</type><parameter>options</parameter></methodparam>
</methodsynopsis>
<para>
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<variablelist>
<varlistentry>
<term><parameter>ffi</parameter></term>
<listitem>
<para>
&rnp.parameter.ffi-description;
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>userid</parameter></term>
<listitem>
<para>
PGP User ID - text that is intended to represent
the name and email address of the key holder.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>key_alg</parameter></term>
<listitem>
<para>
Primary key algorithm (i.e. 'RSA', 'DSA', etc).
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>sub_alg</parameter></term>
<listitem>
<para>
Subkey algorithm. If not set, subkey will not be generated.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>options</parameter></term>
<listitem>
<para>
An associative array with options.
</para>
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>Key</entry>
<entry>Data type</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry><literal>"bits"</literal></entry>
<entry>integer</entry>
<entry>Primary key size in bits. Applicable only to RSA, DSA and El-Gamal keys.</entry>
</row>
<row>
<entry><literal>"hash"</literal></entry>
<entry>string</entry>
<entry>Hash algorithm used in self signature or subkey binding signature.</entry>
</row>
<row>
<entry><literal>"dsa_qbits"</literal></entry>
<entry>integer</entry>
<entry>Set size of a <literal>q</literal> parameter for DSA key.
Note: appropriate default value will be set, depending on key bits. However you may
override it if needed.</entry>
</row>
<row>
<entry><literal>"curve"</literal></entry>
<entry>string</entry>
<entry>Set the curve used for ECC key. Note: this is only applicable for ECDSA, ECDH and SM2 keys.</entry>
</row>
<row>
<entry><literal>"request_password"</literal></entry>
<entry>boolean</entry>
<entry>Enable requesting password via password provider. This password
will be used for key encryption. Password provider callback function should be set in
advance by calling <function>rnp_ffi_set_pass_provider</function>.
Note: this setting will be ignored if password was set via<literal>"password"</literal></entry>
</row>
<row>
<entry><literal>"password"</literal></entry>
<entry>string</entry>
<entry>Set the password used to encrypt the secret key data.</entry>
</row>
<row>
<entry><literal>"expiration"</literal></entry>
<entry>integer</entry>
<entry>Set the key and subkey expiration time in seconds.</entry>
</row>
<row>
<entry><literal>"sub_bits"</literal></entry>
<entry>integer</entry>
<entry>Subkey size in bits. Applicable only to RSA, DSA and El-Gamal keys.</entry>
</row>
<row>
<entry><literal>"sub_hash"</literal></entry>
<entry>string</entry>
<entry>Hash algorithm used in subkey self signature or subkey binding signature.</entry>
</row>
<row>
<entry><literal>"sub_curve"</literal></entry>
<entry>string</entry>
<entry>Set the curve used for ECC subkey. Note: this is only applicable for ECDSA, ECDH and SM2 keys.</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Fingerprint of the generated primary key&return.falseforfailure;. This fingerprint can be used
later to reference the key in sign and encrypt operations. The key data is stored in FFI
memory context and can be saved using
<function>rnp_save_keys</function> or <function>rnp_save_keys_to_path</function>.
</para>
</refsect1>
</refentry>
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