asymmetric_verify_common(9)

💖 asymmetric_verify_common(9) 💖

okay so bestie, this one comes from the Kernel API Manual, and it's the shared verify function for sigv2 and sigv3. no cap, it's giving common-code energy. 💅

🌸 NAME 🌸

asymmetric_verify_common — sigv2 and sigv3 common verify function. literally the common verify girlie for both. periodt. ✨

✨ SYNOPSIS ✨

int asymmetric_verify_common (const struct key *key , const struct
public_key *pk , const char *sig , int siglen , const char *data , int
datalen );

The return type is int, and the cast of characters is right below. 👑

🎀 ARGUMENTS 🎀

• key — the key to use for signature verification; caller must free it. yes, you own the cleanup, bestie — don't ghost it. 🫶
• pk — the associated public key; must not be NULL. this one is non-negotiable, fr fr. 💀
• sig — the xattr signature. that's the signature we're checking. 🌸
• siglen — the length of the xattr signature; must be at least sizeof(struct signature_v2_hdr). lowkey an important size check, don't skip it. 📏
• data — the data to verify the signature on. this is the actual content in question. 🦋
• datalen — length of data. yep, just the length — iconically simple. ⭐

🦋 SEE ALSO 🦋

• Kernel file ./security/integrity/digsig_asymmetric.c
• asymmetric_verify_v3_hashless(9)

go peek at those if you want the deeper lore, slay. 👀

mwah 💋 — source/version: ./security/integrity, dated October 2026.