crypto_alloc_ahash(9)

💖 crypto_alloc_ahash(9) — Kernel API Manual 💖

okay bestie, welcome to the main-character allocation call for ahash handles. No cap, this is the one that hands you the handle you need for everything after it ✨

🌸 NAME 🌸

crypto_alloc_ahash — allocate ahash cipher handle 🎀

🦋 SYNOPSIS 🦋

struct crypto_ahash * crypto_alloc_ahash (const char *alg_name , u32
type , u32 mask );

💅 ARGUMENTS 💅

• alg_name — this is the cra_name / name or cra_driver_name / driver name of the ahash cipher.
• type — specifies the type of the cipher.
• mask — specifies the mask for the cipher.

✨ DESCRIPTION ✨

Allocate a cipher handle for an ahash. The returned struct crypto_ahash is the cipher handle that is required for any subsequent API invocation for that ahash. like, it is literally the entry ticket for the rest of the ahash API journey 👑

🌈 RETURN 🌈

• ✅ allocated cipher handle in case of success
• 😭 IS_ERR is true in case of an error, PTR_ERR returns the error code.

No cap, those are the two outcomes. Keep your error check close, bestie 🫶

🎀 SEE ALSO 🎀

the whole friend group, literally all of them:

• Kernel file ./include/crypto/hash.h Message Digest Algorithm Definitions(9)
• struct ahash_alg(9)
• struct shash_alg(9)
• Asynchronous Message Digest API(9)
• crypto_free_ahash(9)
• crypto_has_ahash(9)
• crypto_ahash_blocksize(9)
• crypto_ahash_digestsize(9)
• crypto_ahash_statesize(9)
• crypto_ahash_reqtfm(9)
• crypto_ahash_reqsize(9)
• crypto_ahash_setkey(9)
• crypto_ahash_finup(9)
• crypto_ahash_final(9)
• crypto_ahash_digest(9)
• crypto_ahash_export(9)
• crypto_ahash_import(9)
• crypto_ahash_init(9)
• crypto_ahash_update(9)
• Asynchronous Hash Request Handle(9)
• ahash_request_set_tfm(9)
• ahash_request_alloc(9)
• ahash_request_free(9)
• ahash_request_set_callback(9)
• ahash_request_set_crypt(9)
• ahash_request_set_virt(9)
• Synchronous Message Digest API(9)
• crypto_alloc_shash(9)
• crypto_free_shash(9)
• crypto_shash_blocksize(9)
• crypto_shash_digestsize(9)
• crypto_shash_descsize(9)
• crypto_shash_setkey(9)
• crypto_shash_digest(9)
• crypto_shash_tfm_digest(9)
• crypto_shash_export(9)
• crypto_shash_import(9)
• crypto_shash_init(9)
• crypto_shash_finup(9)
• crypto_shash_update(9)
• crypto_shash_final(9)

This page is sourced from ./include/crypto, dated October 2026. Stay hydrated, check your pointers, and may your handles always be valid 💖🧚✨