commit 91d9fe4fad3807812d45f161b91d9f6337ea5e25
author Jerome Forissier <jerome@forissier.org> Fri Jan 22 16:30:41 2021 +0100
committer Jerome Forissier <jerome@forissier.org> Mon Nov 25 09:21:51 2024 +0100
tree b9efcfc440ed9c4ee50367cb15314cc4be1f5dcc
parent b03fbd7006aa3e461f52e3761e5f77172854c799

libmbedtls: add SM2 curve

When MBEDTLS_ECP_DP_SM2_ENABLED is set, adds support for the ECC curve
defined for the Chinese SM2 algorithm (G/MT 0003 Part 5, [1]).

Link: [1] http://www.gmbz.org.cn/upload/2018-07-24/1532401863206085511.pdf
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
[jf: rebased onto mbedtls-2.27.0]
Signed-off-by: Jerome Forissier <jerome@forissier.org>
[jw: rebased onto mbedtls-3.4.0]
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
[tve: rebased onto mbedtls-3.6.0]
Signed-off-by: Tom Van Eyck <tom.vaneyck@kuleuven.be>
[sby: rebased onto mbedtls-3.6.2]
Signed-off-by: Sungbae Yoo <sungbaey@nvidia.com>

lib/libmbedtls/mbedtls/library/ecp.c

diff --git a/lib/libmbedtls/mbedtls/library/ecp.c b/lib/libmbedtls/mbedtls/library/ecp.c
index 86e3547..ab50a47 100644
--- a/lib/libmbedtls/mbedtls/library/ecp.c
+++ b/lib/libmbedtls/mbedtls/library/ecp.c
@@ -382,6 +382,10 @@
 #if defined(MBEDTLS_ECP_DP_CURVE448_ENABLED)
     { MBEDTLS_ECP_DP_CURVE448,     30,     448,    "x448"              },
 #endif
+#if defined(MBEDTLS_ECP_DP_SM2_ENABLED)
+    /* https://tools.ietf.org/id/draft-yang-tls-tls13-sm-suites-05.html */
+    { MBEDTLS_ECP_DP_SM2,          41,     256,    "sm2"               },
+#endif
     { MBEDTLS_ECP_DP_NONE,          0,     0,      NULL                },
 };