bpf_crypto_encrypt(9)

💅 bpf_crypto_encrypt — the kernel API manual, but make it cute

ok so bestie, welcome to bpf_crypto_encrypt(9) from the Kernel API Manual ✨ this is literally the page about encrypting a buffer with a configured context and an IV that you hand over. no cap, it's a whole vibe 🎀

---

🌸 NAME

bpf_crypto_encrypt — encrypt a buffer using the configured context and the IV you provide 💖

---

✨ SYNOPSIS

__bpf_kfunc int bpf_crypto_encrypt (struct bpf_crypto_ctx *ctx , const
       struct bpf_dynptr *src , const struct bpf_dynptr *dst , const struct
       bpf_dynptr *siv__nullable );

like, look at her. four args, one return, __bpf_kfunc int, iconic 👑

---

🫶 ARGUMENTS

• ctx — the crypto context you're using. must be a trusted pointer fr fr, no sketchy pointers allowed 🙈
• src — a bpf_dynptr pointing at the plain data. also must be a trusted pointer 💜
• dst — a bpf_dynptr to the buffer where the result goes. yup, must be a trusted pointer too 🦋
• siv__nullable — a bpf_dynptr to the IV data and state data that the decryptor is gonna use. may be NULL — she's optional, main character energy but lowkey chill about it ⭐

---

🔥 DESCRIPTION

so basically: it encrypts the buffer you gave it, using the IV data and the crypto context. the crypto context must be configured — that's not a suggestion bestie, that's the whole assignment 💅

⚠️ quick vibe check: ctx has to be configured before you call this. don't come crying to me if it isn't 😭

---

🦋 SEE ALSO

• Kernel file ./kernel/bpf/crypto.c
• struct bpf_crypto_params(9)
• struct bpf_crypto_ctx(9)
• bpf_crypto_ctx_create(9)
• bpf_crypto_ctx_acquire(9)
• bpf_crypto_ctx_release(9)
• bpf_crypto_decrypt(9) — the sister function, go say hi 🫶

---

ok that's the whole page, you ate that 🍓 this one lives in ./kernel/bpf, version/datestamp era: October 2026, and the page is literally named bpf_crypto_encrypt(9). mwah, go encrypt something beautiful 💖✨🧚