crypto_dh_decode_key(9)

Hey bestie!! Welcome to the crypto_dh_decode_key(9) page from the Kernel API Manual ✨ — today we're decoding a private key and it's giving main-character energy 💅

✨ NAME ✨

crypto_dh_decode_key — decode a private key 🎀

🎀 SYNOPSIS 🎀

int crypto_dh_decode_key (const char *buf , unsigned int len , struct dh
       *params );

🦋 ARGUMENTS 🦋

• buf — Buffer holding a packet key that should be decoded. That's the input bestie 🫶
• len — Length of the packet private key buffer. Literally how much buffer you're working with 💜
• params — Buffer allocated by the caller that is filled with the unpacked DH private key. You bring the buffer, it gets filled ✨

💖 DESCRIPTION 💖

Okay so here's the tea: the unpacking obtains the private key by pointing p to the correct location in buf. Thus, both pointers refer to the same memory. No cap, that's the whole vibe — they're sharing the same memory space 🫶

🔥 RETURN 🔥

It hands back -EINVAL if the buffer has insufficient size, and 0 on success. That's the mood 😭

🌈 SEE ALSO 🌈

Kernel file ./include/crypto/dh.h — plus DH Helper Functions(9), struct dh(9), crypto_dh_key_len(9), crypto_dh_encode_key(9), and __crypto_dh_decode_key(9). Go read those if you want the full lore 📚💅

Later, bestie 🫶 — this page lives under ./include/crypto and it's the October 2026 version of crypto_dh_decode_key(9). Mwah 💋