lib/crypto/sha1.c

Source file repositories/reference/linux-study-clean/lib/crypto/sha1.c

File Facts

System: Linux kernel
Corpus path: lib/crypto/sha1.c
Extension: .c
Size: 9569 bytes
Lines: 337
Domain: Kernel Services
Bucket: lib
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.
Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

crypto/hmac.h
crypto/sha1.h
linux/bitops.h
linux/export.h
linux/kernel.h
linux/module.h
linux/string.h
linux/unaligned.h
linux/wordpart.h
fips.h
sha1.h

Detected Declarations

function sha1_block_generic
function sha1_blocks_generic
function sha1_init
function sha1_update
function __sha1_final
function sha1_final
function sha1
function __hmac_sha1_preparekey
function hmac_sha1_preparekey
function hmac_sha1_init
function hmac_sha1_init_usingrawkey
function hmac_sha1_final
function hmac_sha1
function hmac_sha1_usingrawkey
function sha1_mod_init
function sha1_mod_exit
module init sha1_mod_init
export sha1_init
export sha1_update
export sha1_final
export sha1
export hmac_sha1_preparekey
export hmac_sha1_init
export hmac_sha1_init_usingrawkey
export hmac_sha1_final
export hmac_sha1
export hmac_sha1_usingrawkey

Annotated Snippet

subsys_initcall(sha1_mod_init);

static void __exit sha1_mod_exit(void)
{
}
module_exit(sha1_mod_exit);
#endif

MODULE_DESCRIPTION("SHA-1 and HMAC-SHA1 library functions");
MODULE_LICENSE("GPL");

Annotation

Immediate include surface: `crypto/hmac.h`, `crypto/sha1.h`, `linux/bitops.h`, `linux/export.h`, `linux/kernel.h`, `linux/module.h`, `linux/string.h`, `linux/unaligned.h`.
Detected declarations: `function sha1_block_generic`, `function sha1_blocks_generic`, `function sha1_init`, `function sha1_update`, `function __sha1_final`, `function sha1_final`, `function sha1`, `function __hmac_sha1_preparekey`, `function hmac_sha1_preparekey`, `function hmac_sha1_init`.
Atlas domain: Kernel Services / lib.
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.