54 lines
2.0 KiB
XML
54 lines
2.0 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE dita PUBLIC "-//OASIS//DTD DITA Composite//EN" "ditabase.dtd">
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<dita xml:lang="en-GB">
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<topic id="topic_cb4_fyz_5db">
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<title>Subkey Creation</title>
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<body>
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<p>Adding subkeys to a primary key is fairly similar to creating the primary key with
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the <codeph>create_subkey</codeph> method. Most of the arguments are the same, but not quite
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all. Instead of the <codeph>userid</codeph> argument there is now a <codeph>key</codeph>
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argument for selecting which primary key to add the subkey to.</p>
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<p>In the following example an encryption subkey will be added to the primary key. Since
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Danger Mouse is a security conscious secret agent, this subkey will only be valid for about
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six months, half the length of the primary key.</p>
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<p>
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<codeblock id="subkey-1" outputclass="language-python">import gpg
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c = gpg.Context()
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c.home_dir = "~/.gnupg-dm"
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key = c.get_key(dmkey.fpr, secret=True)
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dmsub = c.create_subkey(key, algorithm="rsa3072", expires_in=15768000,
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encrypt=True)
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</codeblock>
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</p>
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<p>As with the primary key, the results here can be checked with:</p>
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<p>
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<codeblock id="subkey-2" outputclass="language-python">print("""
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Fingerprint: {0}
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Primary Key: {1}
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Public Key: {2}
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Secret Key: {3}
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Sub Key: {4}
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User IDs: {5}
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""".format(dmsub.fpr, dmsub.primary, dmsub.pubkey, dmsub.seckey, dmsub.sub,
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dmsub.uid))
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</codeblock>
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</p>
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<p>As well as on the command line with:</p>
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<p>
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<codeblock id="subkey-3" outputclass="language-bourne">bash-4.4$ gpg --homedir ~/.gnupg-dm -K
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~/.gnupg-dm/pubring.kbx
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----------------------
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sec rsa3072 2018-03-15 [SC] [expires: 2019-03-15]
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177B7C25DB99745EE2EE13ED026D2F19E99E63AA
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uid [ultimate] Danger Mouse <dm@secret.example.net>
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ssb rsa3072 2018-03-15 [E] [expires: 2018-09-13]
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bash-4.4$
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</codeblock>
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</p>
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</body>
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</topic>
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</dita>
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