hmac_sha1_final(9)

💖 NAME 💖

okay so hmac_sha1_final is literally the function whose whole job is Finish computing an HMAC-SHA1 value ✨

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✨ SYNOPSIS ✨

here’s the signature, exactly as it is, no edits bestie:

void hmac_sha1_final (struct hmac_sha1_ctx *ctx , u8 out[static
       SHA1_DIGEST_SIZE] );

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🎀 ARGUMENTS 🎀

• ctx — the HMAC context you’re finalizing; it must have been initialized first, no skipping that step 💅
• out — the (output) spot where the resulting HMAC-SHA1 value lands 🫶

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🌸 DESCRIPTION 🌸

after it finishes, this zeroizes ctx. so the caller does not need to do it — the cleanup is already handled, no extra main-character cleanup arc required 😌✨

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🦋 CONTEXT 🦋

Any context. literally any 💖

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👑 SEE ALSO 👑

go check out this whole friend group:

• Kernel file ./include/crypto/sha1.h
• struct sha1_ctx(9)
• sha1_init(9)
• sha1_update(9)
• sha1_final(9)
• sha1(9)
• struct hmac_sha1_key(9)
• struct hmac_sha1_ctx(9)
• hmac_sha1_preparekey(9)
• hmac_sha1_init(9)
• hmac_sha1_init_usingrawkey(9)
• hmac_sha1_update(9)
• hmac_sha1(9)
• hmac_sha1_usingrawkey(9)

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byeee 💖 this page’s source is ./include/crypto, it’s dated October 2026, and it’s all about hmac_sha1_final(9). mwah ✨🎀