crypto/ccm.c

File Facts

System

Linux kernel

Corpus path

crypto/ccm.c

Extension

.c

Size

23565 bytes

Lines

942

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/internal/aead.h
• crypto/internal/cipher.h
• crypto/internal/hash.h
• crypto/internal/skcipher.h
• crypto/scatterwalk.h
• crypto/utils.h
• linux/err.h
• linux/kernel.h
• linux/module.h
• linux/slab.h
• linux/string.h

Detected Declarations

• struct ccm_instance_ctx
• struct crypto_ccm_ctx
• struct crypto_rfc4309_ctx
• struct crypto_rfc4309_req_ctx
• struct crypto_ccm_req_priv_ctx
• struct cbcmac_tfm_ctx
• function set_msg_len
• function crypto_ccm_setkey
• function crypto_ccm_setauthsize
• function format_input
• function format_adata
• function crypto_ccm_auth
• function crypto_ccm_encrypt_done
• function crypto_ccm_check_iv
• function crypto_ccm_init_crypt
• function crypto_ccm_encrypt
• function crypto_ccm_decrypt_done
• function crypto_ccm_decrypt
• function crypto_ccm_init_tfm
• function crypto_ccm_exit_tfm
• function crypto_ccm_free
• function crypto_ccm_create_common
• function crypto_ccm_create
• function crypto_ccm_base_create
• function crypto_rfc4309_setkey
• function crypto_rfc4309_setauthsize
• function crypto_rfc4309_encrypt
• function crypto_rfc4309_decrypt
• function crypto_rfc4309_init_tfm
• function crypto_rfc4309_exit_tfm
• function crypto_rfc4309_free
• function crypto_rfc4309_create
• function crypto_cbcmac_digest_setkey
• function crypto_cbcmac_digest_init
• function crypto_cbcmac_digest_update
• function crypto_cbcmac_digest_finup
• function cbcmac_init_tfm
• function cbcmac_exit_tfm
• function cbcmac_create
• function crypto_ccm_module_init
• function crypto_ccm_module_exit
• module init crypto_ccm_module_init

Annotated Snippet

module_init(crypto_ccm_module_init);
module_exit(crypto_ccm_module_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Counter with CBC MAC");
MODULE_ALIAS_CRYPTO("ccm_base");
MODULE_ALIAS_CRYPTO("rfc4309");
MODULE_ALIAS_CRYPTO("ccm");
MODULE_ALIAS_CRYPTO("cbcmac");
MODULE_IMPORT_NS("CRYPTO_INTERNAL");

Annotation

• Immediate include surface: `crypto/internal/aead.h`, `crypto/internal/cipher.h`, `crypto/internal/hash.h`, `crypto/internal/skcipher.h`, `crypto/scatterwalk.h`, `crypto/utils.h`, `linux/err.h`, `linux/kernel.h`.
• Detected declarations: `struct ccm_instance_ctx`, `struct crypto_ccm_ctx`, `struct crypto_rfc4309_ctx`, `struct crypto_rfc4309_req_ctx`, `struct crypto_ccm_req_priv_ctx`, `struct cbcmac_tfm_ctx`, `function set_msg_len`, `function crypto_ccm_setkey`, `function crypto_ccm_setauthsize`, `function format_input`.
• 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.