crypto/ecrdsa_defs.h

Source file repositories/reference/linux-study-clean/crypto/ecrdsa_defs.h

File Facts

System
Linux kernel
Corpus path
crypto/ecrdsa_defs.h
Extension
.h
Size
7486 bytes
Lines
231
Domain
Kernel Services
Bucket
crypto
Inferred role
Kernel Services: implementation source
Status
source implementation candidate

Why This File Exists

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

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _CRYTO_ECRDSA_DEFS_H
#define _CRYTO_ECRDSA_DEFS_H

#include <crypto/internal/ecc.h>

#define ECRDSA_MAX_SIG_SIZE (2 * 512 / 8)
#define ECRDSA_MAX_DIGITS (512 / 64)

/*
 * EC-RDSA uses its own set of curves.
 *
 * cp256{a,b,c} curves first defined for GOST R 34.10-2001 in RFC 4357 (as
 * 256-bit {A,B,C}-ParamSet), but inherited for GOST R 34.10-2012 and
 * proposed for use in R 50.1.114-2016 and RFC 7836 as the 256-bit curves.
 */
/* OID_gostCPSignA 1.2.643.2.2.35.1 */
static u64 cp256a_g_x[] = {
	0x0000000000000001ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x0000000000000000ull, };
static u64 cp256a_g_y[] = {
	0x22ACC99C9E9F1E14ull, 0x35294F2DDF23E3B1ull,
	0x27DF505A453F2B76ull, 0x8D91E471E0989CDAull, };
static u64 cp256a_p[] = { /* p = 2^256 - 617 */
	0xFFFFFFFFFFFFFD97ull, 0xFFFFFFFFFFFFFFFFull,
	0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull };
static u64 cp256a_n[] = {
	0x45841B09B761B893ull, 0x6C611070995AD100ull,
	0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull };
static u64 cp256a_a[] = { /* a = p - 3 */
	0xFFFFFFFFFFFFFD94ull, 0xFFFFFFFFFFFFFFFFull,
	0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull };
static u64 cp256a_b[] = {
	0x00000000000000a6ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x0000000000000000ull };

static struct ecc_curve gost_cp256a = {
	.name = "cp256a",
	.nbits = 256,
	.g = {
		.x = cp256a_g_x,
		.y = cp256a_g_y,
		.ndigits = 256 / 64,
	},
	.p = cp256a_p,
	.n = cp256a_n,
	.a = cp256a_a,
	.b = cp256a_b
};

/* OID_gostCPSignB 1.2.643.2.2.35.2 */
static u64 cp256b_g_x[] = {
	0x0000000000000001ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x0000000000000000ull, };
static u64 cp256b_g_y[] = {
	0x744BF8D717717EFCull, 0xC545C9858D03ECFBull,
	0xB83D1C3EB2C070E5ull, 0x3FA8124359F96680ull, };
static u64 cp256b_p[] = { /* p = 2^255 + 3225 */
	0x0000000000000C99ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x8000000000000000ull, };
static u64 cp256b_n[] = {
	0xE497161BCC8A198Full, 0x5F700CFFF1A624E5ull,
	0x0000000000000001ull, 0x8000000000000000ull, };
static u64 cp256b_a[] = { /* a = p - 3 */
	0x0000000000000C96ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x8000000000000000ull, };
static u64 cp256b_b[] = {
	0x2F49D4CE7E1BBC8Bull, 0xE979259373FF2B18ull,
	0x66A7D3C25C3DF80Aull, 0x3E1AF419A269A5F8ull, };

static struct ecc_curve gost_cp256b = {
	.name = "cp256b",
	.nbits = 256,
	.g = {
		.x = cp256b_g_x,
		.y = cp256b_g_y,
		.ndigits = 256 / 64,
	},
	.p = cp256b_p,
	.n = cp256b_n,
	.a = cp256b_a,
	.b = cp256b_b
};

/* OID_gostCPSignC 1.2.643.2.2.35.3 */
static u64 cp256c_g_x[] = {
	0x0000000000000000ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x0000000000000000ull, };
static u64 cp256c_g_y[] = {
	0x366E550DFDB3BB67ull, 0x4D4DC440D4641A8Full,
	0x3CBF3783CD08C0EEull, 0x41ECE55743711A8Cull, };

Annotation

Implementation Notes