ecryptfs_process_key_cipher(9)

💅 ecryptfs_process_key_cipher(9) 💅

okay so bestie, welcome to the Kernel API Manual — this one's ecryptfs_process_key_cipher(9) and it's literally the glow-up moment for your key cipher ✨

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🎀 NAME 🎀

ecryptfs_process_key_cipher — does the key cipher initialization, periodt 💫

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🌸 SYNOPSIS 🌸

int ecryptfs_process_key_cipher (struct crypto_skcipher **key_tfm , char
       *cipher_name , size_t *key_size );

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🦋 ARGUMENTS 🦋

• key_tfm — the crypto context for your key material, and yes, this function is the one that sets it 👑
• cipher_name — the name of the cipher, like, literally what it's called 💖
• key_size — how big the key is, in bytes 🎀

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✨ DESCRIPTION ✨

Returns zero on success 🫶

and listen, this part matters: any crypto_tfm structs allocated here should be released by other functions — like, say, on a superblock put event — and that's true regardless of whether this function succeeds or fails 😭 so don't be out here thinking "oh it failed so nothing to clean up," because no. Not the vibe. The cleanup is somebody else's job either way, no cap 💀

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🌈 SEE ALSO 🌈

Kernel file ./fs/ecryptfs/crypto.c — and the whole friend group:

• ecryptfs_from_hex(9)
• ecryptfs_derive_iv(9)
• ecryptfs_init_crypt_stat(9)
• ecryptfs_destroy_crypt_stat(9)
• virt_to_scatterlist(9)
• crypt_scatterlist(9)
• crypt_extent(9)
• ecryptfs_encrypt_page(9)
• ecryptfs_decrypt_page(9)
• ecryptfs_init_crypt_ctx(9)
• ecryptfs_copy_mount_wide_flags_to_inode_flags(9)
• ecryptfs_set_default_crypt_stat_vals(9)
• ecryptfs_new_file_context(9)
• ecryptfs_validate_marker(9)
• ecryptfs_process_flags(9)
• write_ecryptfs_marker(9)
• ecryptfs_code_for_cipher_string(9)
• ecryptfs_cipher_code_to_string(9)
• ecryptfs_write_headers_virt(9)
• ecryptfs_write_metadata(9)
• set_default_header_data(9)
• ecryptfs_read_headers_virt(9)
• ecryptfs_read_xattr_region(9)
• ecryptfs_destroy_crypto(9)
• ecryptfs_tfm_exists(9)
• ecryptfs_get_tfm_and_mutex_for_cipher_name(9)
• ecryptfs_encode_for_filename(9)
• ecryptfs_decode_from_filename(9)
• ecryptfs_encrypt_and_encode_filename(9)
• ecryptfs_decode_and_decrypt_filename(9)

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ngl that's a lot of siblings but they're all iconic in their own way 💜

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and that's the whole page, bestie!! came from ./fs/ecryptfs, dated October 2026, and it's signed off with ecryptfs_process_key_cipher(9) — mwah 💋🌸