crypto/hctr2.c

File Facts

System

Linux kernel

Corpus path

crypto/hctr2.c

Extension

.c

Size

14285 bytes

Lines

482

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/gf128hash.h
• crypto/internal/cipher.h
• crypto/internal/skcipher.h
• crypto/scatterwalk.h
• linux/module.h

Detected Declarations

• struct hctr2_instance_ctx
• struct hctr2_tfm_ctx
• struct hctr2_request_ctx
• function hctr2_hash_tweaklens
• function hctr2_setkey
• function hctr2_hash_tweak
• function hctr2_hash_message
• function hctr2_finish
• function hctr2_xctr_done
• function hctr2_crypt
• function hctr2_encrypt
• function hctr2_decrypt
• function hctr2_init_tfm
• function hctr2_exit_tfm
• function hctr2_free_instance
• function hctr2_create_common
• function hctr2_create_base
• function hctr2_create
• function hctr2_module_init
• function hctr2_module_exit
• module init hctr2_module_init

Annotated Snippet

module_init(hctr2_module_init);
module_exit(hctr2_module_exit);

MODULE_DESCRIPTION("HCTR2 length-preserving encryption mode");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS_CRYPTO("hctr2");
MODULE_IMPORT_NS("CRYPTO_INTERNAL");

Annotation

• Immediate include surface: `crypto/gf128hash.h`, `crypto/internal/cipher.h`, `crypto/internal/skcipher.h`, `crypto/scatterwalk.h`, `linux/module.h`.
• Detected declarations: `struct hctr2_instance_ctx`, `struct hctr2_tfm_ctx`, `struct hctr2_request_ctx`, `function hctr2_hash_tweaklens`, `function hctr2_setkey`, `function hctr2_hash_tweak`, `function hctr2_hash_message`, `function hctr2_finish`, `function hctr2_xctr_done`, `function hctr2_crypt`.
• 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.