caam_encap_blob(9)

💅 caam_encap_blob(9) ✨

okay so bestie, welcome to the Kernel API Manual — yes we're literally in kernel land now, and no, you don't need to be scared. this one's a little function with big main character energy: it takes your key and wraps it up in a secure lil blob 🎀

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🌸 NAME 🌸

caam_encap_blob — encapsulate blob. that's it, that's the whole job. it encapsulates the blob. slay. 💅

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✨ SYNOPSIS ✨

int caam_encap_blob (struct caam_blob_priv *priv , struct caam_blob_info
*info );

note the return type is int, bestie — it's giving "i will tell you if things went well" energy 👑

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🫶 ARGUMENTS 🫶

• priv — the instance you got back from caam_blob_gen_init. like, you can't just show up without your VIP pass, okay? 🎟️
• info — a pointer to the blobbing info, which is the whole vibe pack: it describes the input key, the output blob, and the key modifier buffers. all three, together, no cap. 🧚

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🌈 RETURN 🌈

on success it returns 0 and sets info->output_len — like, it's not just saying "yay", it's also handing you the actual length of the output. icon behavior, fr fr ✨

otherwise you get a negative error code. that's your sign something went sideways. not me getting a negative error code 😭💀

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🦋 SEE ALSO 🦋

• Kernel file ./include/soc/fsl/caam-blob.h
• struct caam_pkey_info(9)
• struct caam_blob_info(9)
• caam_blob_gen_init(9)
• caam_blob_gen_exit(9)
• caam_process_blob(9)
• caam_decap_blob(9)

basically the whole blob-adjacent friend group 💜 go read them, iykyk 👑

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mwah 💋 this page lives in ./include/soc/fsl and it's stamped October 2026 — go off, blob queen, see you in the kernel 🌸✨