STRUCT CCP_RSA_ENGINE(9)

💖 struct ccp_rsa_engine — CCP RSA operation 💖

okay bestie, so this is a page from the Kernel API Manual (section 9, kernel API land ✨), and it's all about struct ccp_rsa_engine — literally the struct that describes one RSA operation for the CCP. it's giving "small struct, big cryptography energy" 💅

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✨ SYNOPSIS ✨

struct ccp_rsa_engine {
    u32 key_size;
    struct scatterlist *exp;
    u32 exp_len;
    struct scatterlist *mod;
    u32 mod_len;
    struct scatterlist *src, *dst;
    u32 src_len;
 };

(yes the closing brace has a lil space before it in the original, we're keeping it exactly as-is, no cap 🫶)

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🎀 Members 🎀

• key_size — the length of the RSA key, in bits 🔑
• exp — the RSA exponent, as a scatterlist pointer
• exp_len — how long the exponent is, in bytes
• mod — the RSA modulus (scatterlist pointer, of course)
• mod_len — how long the modulus is, in bytes
• src — the data that's gonna be used for this operation 🌸
• dst — the data that gets produced by this operation ✨
• src_len — the length, in bytes, of the data used for this operation

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💜 Description 💜

so here's the vibe check: these are the variables you have to have set before you call ccp_enqueue_cmd. that's it, that's the whole rule. no defaults, no autopilot, you set them all yourself bestie 🙈

the required lineup is:

• key_size, exp, exp_len, mod, mod_len, src, dst, src_len

literally all of them. every single one. don't skip any, the kernel will not be slaying on your behalf 😭

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🦋 SEE ALSO 🦋

kernel file ./include/linux/ccp.h — go read it, iykyk 📖

and the whole friend group of related pages:

• ccp_present(9)
• ccp_version(9)
• ccp_enqueue_cmd(9)
• struct ccp_aes_engine(9)
• struct ccp_xts_aes_engine(9)
• struct ccp_sha_engine(9)
• struct ccp_des3_engine(9)
• struct ccp_passthru_engine(9)
• struct ccp_passthru_nomap_engine(9)
• struct ccp_ecc_modular_math(9)
• struct ccp_ecc_point(9)
• struct ccp_ecc_point_math(9)
• struct ccp_ecc_engine(9)
• struct ccp_cmd(9)

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one tiny flex before you go: src and dst are declared together on one line as struct scatterlist *src, *dst; — that's canon, don't come for me 💀

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and that's the whole page, bestie!! 🌈 this one lives in ./include/linux and it's dated October 2026, and the page itself is titled struct ccp_rsa_engine(9) — mwah, iconic, go set your fields 💖🎀🫶