HCSECD.CONF(5)

💅 HCSECD.CONF(5) — the hcsecd.conf girlie manual 💅

okay so bestie, you know hcsecd(8)? this is its glow-up config file, the hcsecd.conf one, and I'm gonna walk you through it like we're texting at 2am. it's giving "Bluetooth link keys but make it a vibe check." 🦋

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✨ NAME ✨

hcsecd.conf — literally the configuration file for hcsecd(8), no cap 💖

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🌸 DESCRIPTION 🌸

So. The hcsecd.conf file is the configuration file for the hcsecd(8) Bluetooth link keys/PIN codes management daemon. That's it, that's the whole personality. 🎀

It's a free-form ASCII text file, and it gets parsed by the recursive-descent parser built into hcsecd(8) — yes she has a parser, she's built different. The file may contain extra tabs and newlines for formatting purposes, so go ahead and make it pretty, she won't mind. 💅

Keywords in the file are case-sensitive — so don't be out here typing BDADDR and expecting it to work, because it will NOT, and I will know. 🙈

Comments? You can place them anywhere within the file (except within quotes — the quotes are sacred, do not touch). Comments begin with the # character and end at the end of the line. Iconic behaviour, honestly. ✨

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🦋 FILE FORMAT 🦋

The hcsecd.conf file consists of a list of device entries. Each device entry defines a link key or PIN code for a remote Bluetooth device, and each remote Bluetooth device is identified by its unique BD_ADDR — that's her government name, don't forget it. 👑

The device entry looks like this, lowkey:

device { option argument; [option argument;] }

The following section describes all supported options and arguments. (Yes, all of them. I'm not skipping a single one, that's not the energy we're bringing today.) 🫶

💜 the options 💜

• bdaddr BD_ADDR — Specify remote device BD_ADDR for the entry. That's the identifier, the main character energy of the whole block. ⭐
• name device_name — Specify user friendly name for the entry. Name is a string in straight double quotes, so like "my phone" — straight quotes only, bestie, curly quotes are NOT invited to this party. 🎀
• key link_key — Specify link key for the entry. Link key is hexadecimal string up to 32 characters in length starting with 0x. so it's giving 0x plus your little hex besties. 🔥
• key nokey — Specify no link key for the entry. that's right, keyless behaviour, we love a minimal queen. 💀
• pin PIN_code — Specify PIN code for the entry. PIN code is a string up to 16 characters in length in straight double quotes. sixteen chars max, and again — straight quotes. 📏
• pin nopin — Specify no PIN code for the entry. no pin, no problem, no notes. 🙈

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🌈 EXAMPLES 🌈

A sample hcsecd.conf file, here she is in all her glory:

# Default entry is applied if no better match found
# It MUST have 00:00:00:00:00:00 as bdaddr
device {
        bdaddr  00:00:00:00:00:00;
        name    "Default entry";
        key     nokey;
        pin     nopin;
}

# Ericsson T68 phone
device {
        bdaddr  00:80:37:5e:4d:d4;
        name    "Ericsson T68 phone";
        key     nokey;
        pin     "0000"; # PIN code
}

# Dummy device
device {
        bdaddr  00:11:22:33:44:55;
        name    "Dummy";
        key     0x00112233445566778899aabbccddeeff; # 16 bytes key
        pin     nopin;
}

⚠️ okay so the default entry — the one that gets applied if no better match is found — MUST have 00:00:00:00:00:00 as bdaddr. It MUST. Not "should". MUST. That's a whole lot of caps and it's not for decoration, bestie. 😭

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🧚 SEE ALSO 🧚

• hcsecd(8) — go read her too, she's the whole reason this file exists 💖

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👑 AUTHORS 👑

Maksim Yevmenkin <m_evmenkin@yahoo.com> — the icon, the legend, the moment. 🫶

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and that's the page!! this was Debian's HCSECD.CONF(5), dated May 26, 2003 — yes she's an elder but she still slays, periodt. 🌸✨💅