hmac_sha1_init_usingrawkey(9)

okay so bestie, welcome to hmac_sha1_init_usingrawkey(9) from the Kernel API Manual 💅✨. She's here to initialize an HMAC-SHA1 context for a new message using a raw key, and honestly? iconic setup behavior.

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💖 NAME 💖

hmac_sha1_init_usingrawkey — initialize an HMAC-SHA1 context for a new message, using a raw key 🫶

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🌸 SYNOPSIS 🌸

void hmac_sha1_init_usingrawkey (struct hmac_sha1_ctx *ctx , const u8
       *raw_key , size_t raw_key_len );

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🎀 ARGUMENTS 🎀

• ctx — (output) the HMAC context to initialize. This is the main-character context getting set up ✨
• raw_key — the raw HMAC-SHA1 key. The key itself, in its raw little form 🔑
• raw_key_len — the key length in bytes. All key lengths are supported, no cap 💯

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🦋 DESCRIPTION 🦋

If you don't need incremental computation, consider hmac_sha1_usingrawkey instead. Like, real talk: that's the shortcut bestie, so maybe check it out before doing the whole incremental era 😌

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🌈 CONTEXT 🌈

Any context. Literally any 🫶

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👑 SEE ALSO 👑

• 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_update(9)
• hmac_sha1_final(9)
• hmac_sha1(9)
• hmac_sha1_usingrawkey(9)

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this page is chillin' under ./include/crypto, dated October 2026, and it's the hmac_sha1_init_usingrawkey(9) page. mwah 💋🎀