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authorStefan Berger <stefanb@linux.ibm.com>2024-04-04 10:18:48 -0400
committerHerbert Xu <herbert@gondor.apana.org.au>2024-04-12 15:07:52 +0800
commitc0d6bd1fd367a5374bff7e3f3bdf47beb84893c8 (patch)
treee599648a46283c0efbaba045b872648f6d01a757 /crypto
parent48e8d3a5f4f902f2bcd70cc88ff784aa7d6d2c63 (diff)
crypto: ecc - Add nbits field to ecc_curve structure
Add the number of bits a curve has to the ecc_curve definition to be able to derive the number of bytes a curve requires for its coordinates from it. It also allows one to identify a curve by its particular size. Set the number of bits on all curve definitions. Tested-by: Lukas Wunner <lukas@wunner.de> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Stefan Berger <stefanb@linux.ibm.com> Reviewed-by: Vitaly Chikunov <vt@altlinux.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/ecc_curve_defs.h4
-rw-r--r--crypto/ecrdsa_defs.h5
2 files changed, 9 insertions, 0 deletions
diff --git a/crypto/ecc_curve_defs.h b/crypto/ecc_curve_defs.h
index 9719934c9428..ab1ef3d94be5 100644
--- a/crypto/ecc_curve_defs.h
+++ b/crypto/ecc_curve_defs.h
@@ -17,6 +17,7 @@ static u64 nist_p192_b[] = { 0xFEB8DEECC146B9B1ull, 0x0FA7E9AB72243049ull,
0x64210519E59C80E7ull };
static struct ecc_curve nist_p192 = {
.name = "nist_192",
+ .nbits = 192,
.g = {
.x = nist_p192_g_x,
.y = nist_p192_g_y,
@@ -43,6 +44,7 @@ static u64 nist_p256_b[] = { 0x3BCE3C3E27D2604Bull, 0x651D06B0CC53B0F6ull,
0xB3EBBD55769886BCull, 0x5AC635D8AA3A93E7ull };
static struct ecc_curve nist_p256 = {
.name = "nist_256",
+ .nbits = 256,
.g = {
.x = nist_p256_g_x,
.y = nist_p256_g_y,
@@ -75,6 +77,7 @@ static u64 nist_p384_b[] = { 0x2a85c8edd3ec2aefull, 0xc656398d8a2ed19dull,
0x988e056be3f82d19ull, 0xb3312fa7e23ee7e4ull };
static struct ecc_curve nist_p384 = {
.name = "nist_384",
+ .nbits = 384,
.g = {
.x = nist_p384_g_x,
.y = nist_p384_g_y,
@@ -95,6 +98,7 @@ static u64 curve25519_a[] = { 0x000000000001DB41, 0x0000000000000000,
0x0000000000000000, 0x0000000000000000 };
static const struct ecc_curve ecc_25519 = {
.name = "curve25519",
+ .nbits = 255,
.g = {
.x = curve25519_g_x,
.ndigits = 4,
diff --git a/crypto/ecrdsa_defs.h b/crypto/ecrdsa_defs.h
index 0056335b9d03..1c2c2449e331 100644
--- a/crypto/ecrdsa_defs.h
+++ b/crypto/ecrdsa_defs.h
@@ -47,6 +47,7 @@ static u64 cp256a_b[] = {
static struct ecc_curve gost_cp256a = {
.name = "cp256a",
+ .nbits = 256,
.g = {
.x = cp256a_g_x,
.y = cp256a_g_y,
@@ -80,6 +81,7 @@ static u64 cp256b_b[] = {
static struct ecc_curve gost_cp256b = {
.name = "cp256b",
+ .nbits = 256,
.g = {
.x = cp256b_g_x,
.y = cp256b_g_y,
@@ -117,6 +119,7 @@ static u64 cp256c_b[] = {
static struct ecc_curve gost_cp256c = {
.name = "cp256c",
+ .nbits = 256,
.g = {
.x = cp256c_g_x,
.y = cp256c_g_y,
@@ -166,6 +169,7 @@ static u64 tc512a_b[] = {
static struct ecc_curve gost_tc512a = {
.name = "tc512a",
+ .nbits = 512,
.g = {
.x = tc512a_g_x,
.y = tc512a_g_y,
@@ -211,6 +215,7 @@ static u64 tc512b_b[] = {
static struct ecc_curve gost_tc512b = {
.name = "tc512b",
+ .nbits = 512,
.g = {
.x = tc512b_g_x,
.y = tc512b_g_y,