crypto/essiv.c

File Facts

System

Linux kernel

Corpus path

crypto/essiv.c

Extension

.c

Size

18041 bytes

Lines

649

Domain

Kernel Services

Bucket

crypto

Inferred role

Kernel Services: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Shared kernel service surface used by multiple subsystems, including helpers, cryptography, virtualization support, and async I/O infrastructure.

• Shared kernel service surface used by multiple subsystems, including helpers, cryptography, virtualization support, and async I/O infrastructure.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• crypto/authenc.h
• crypto/internal/aead.h
• crypto/internal/cipher.h
• crypto/internal/hash.h
• crypto/internal/skcipher.h
• crypto/scatterwalk.h
• linux/module.h
• internal.h

Detected Declarations

• struct essiv_instance_ctx
• struct essiv_tfm_ctx
• struct essiv_aead_request_ctx
• function essiv_skcipher_setkey
• function essiv_aead_setkey
• function essiv_aead_setauthsize
• function essiv_skcipher_done
• function essiv_skcipher_crypt
• function essiv_skcipher_encrypt
• function essiv_skcipher_decrypt
• function essiv_aead_done
• function essiv_aead_crypt
• function essiv_aead_encrypt
• function essiv_aead_decrypt
• function essiv_init_tfm
• function essiv_skcipher_init_tfm
• function essiv_aead_init_tfm
• function essiv_skcipher_exit_tfm
• function essiv_aead_exit_tfm
• function essiv_skcipher_free_instance
• function essiv_aead_free_instance
• function parse_cipher_name
• function essiv_supported_algorithms
• function essiv_create
• function essiv_module_init
• function essiv_module_exit
• module init essiv_module_init

Annotated Snippet

module_init(essiv_module_init);
module_exit(essiv_module_exit);

MODULE_DESCRIPTION("ESSIV skcipher/aead wrapper for block encryption");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS_CRYPTO("essiv");
MODULE_IMPORT_NS("CRYPTO_INTERNAL");

Annotation

• Immediate include surface: `crypto/authenc.h`, `crypto/internal/aead.h`, `crypto/internal/cipher.h`, `crypto/internal/hash.h`, `crypto/internal/skcipher.h`, `crypto/scatterwalk.h`, `linux/module.h`, `internal.h`.
• Detected declarations: `struct essiv_instance_ctx`, `struct essiv_tfm_ctx`, `struct essiv_aead_request_ctx`, `function essiv_skcipher_setkey`, `function essiv_aead_setkey`, `function essiv_aead_setauthsize`, `function essiv_skcipher_done`, `function essiv_skcipher_crypt`, `function essiv_skcipher_encrypt`, `function essiv_skcipher_decrypt`.
• Atlas domain: Kernel Services / crypto.
• Implementation status: integration implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.