crypto_sig_digestsize(9)

🌸 NAME 🌸

Hey bestie 💖 this is crypto_sig_digestsize(9) from the Kernel API Manual, and it's here to help you get the maximum digest size ✨

crypto_sig_digestsize — Get maximum digest size 💅

✨ SYNOPSIS ✨

unsigned int crypto_sig_digestsize (struct crypto_sig *tfm );

🎀 ARGUMENTS 🎀

• tfm — signature tfm handle allocated with crypto_alloc_sig 🫶

💖 DESCRIPTION 💖

Okay so picture this: the function returns the maximum digest size in bytes 🔥. It assumes that the key is already set in the transformation, no cap.

⚠️ But bestie, listen: if this function is called without a setkey or with a failed setkey, you may end up in a NULL dereference 😭💀. That's the warning, fr fr.

🦋 SEE ALSO 🦋

• Kernel file ./include/crypto/sig.h
• struct crypto_sig(9)
• struct sig_alg(9)
• Generic Public Key Signature API(9)
• crypto_alloc_sig(9)
• crypto_free_sig(9)
• crypto_sig_keysize(9)
• crypto_sig_maxsize(9)
• crypto_sig_sign(9)
• crypto_sig_verify(9)
• crypto_sig_set_pubkey(9)
• crypto_sig_set_privkey(9)

That's the whole vibe, bestie 🫶 — source is ./include/crypto, date is October 2026, and the page is crypto_sig_digestsize(9). Bye 💅