krb5_derive_Kc(9)

💖 krb5_derive_Kc(9) — Kernel API Manual 💖

okay bestie, welcome to the Kernel API Manual entry for krb5_derive_Kc — she’s giving crypto-core, she’s giving key-derivation main character energy ✨

🌸 NAME 🌸

krb5_derive_Kc — derive key Kc and install into a hash 💅

🦋 SYNOPSIS 🦋

int krb5_derive_Kc (const struct krb5_enctype *krb5 , const struct
krb5_buffer *TK , u32 usage , struct krb5_buffer *key , gfp_t gfp );

🎀 ARGUMENTS 🎀

• krb5 — the encryption type to use 🔥
• TK — the base key 🔑
• usage — the key usage number 🔢
• key — prepped buffer to store the key into 🫶
• gfp — allocation restrictions 🌈

💜 DESCRIPTION 💜

Derive the Kerberos Kc checksumming key. The key gets stored into the prepared buffer. That’s the vibe, that’s the whole assignment 💫

👑 SEE ALSO 👑

• Kernel file ./crypto/krb5/krb5_kdf.c
• crypto_krb5_calc_PRFplus(9)
• krb5_derive_Ke(9)
• krb5_derive_Ki(9)

xoxo, signing off from ./crypto/krb5 — October 2026 edition 💖🎀🦋