SP updates for SM2

Allow wolfSSL to build with SP implementations of SM2.
Updates to SP implementation of other code.

Author: SparkiDev

configure.ac

@@ -3515,10 +3515,6 @@ AC_ARG_ENABLE([sm2],
     [ ENABLED_SM2=no ]
     )
 
-if test "$ENABLED_SP_MATH" = "yes"
-then
-    ENABLED_SM2="no"
-fi
 if test "$ENABLED_SM2" = "yes"
 then
     if test "$ENABLED_ECC" = "no"
@@ -7115,6 +7111,7 @@ ENABLED_SP_ECC=no
 ENABLED_SP_EC_256=no
 ENABLED_SP_EC_384=no
 ENABLED_SP_EC_521=no
+ENABLED_SP_SM2=$ENABLED_SM2
 ENABLED_SP_SAKKE_1024=$ENABLED_SAKKE
 ENABLED_SP_NO_MALLOC=no
 ENABLED_SP_NONBLOCK=no
@@ -7206,6 +7203,15 @@ do
     ENABLED_SP_ECC=yes
     ENABLED_SP_SAKKE_1024=yes
     ;;
+  smallsm2)
+    ENABLED_SP_SMALL=yes
+    ENABLED_SP_ECC=yes
+    ENABLED_SP_SM2=yes
+    ;;
+  sm2)
+    ENABLED_SP_ECC=yes
+    ENABLED_SP_SM2=yes
+    ;;
 
   small2048)
     ENABLED_SP_SMALL=yes
@@ -7353,6 +7359,10 @@ if test "$ENABLED_ECC" != "no" && test "$ENABLED_SP_ECC" = "yes"; then
         AM_CFLAGS="$AM_CFLAGS -DWOLFSSL_SP_1024"
         AM_CCASFLAGS="$AM_CCASFLAGS -DWOLFSSL_SP_1024"
     fi
+    if test "$ENABLED_SP_SM2" = "yes"; then
+        AM_CFLAGS="$AM_CFLAGS -DWOLFSSL_SP_SM2"
+        AM_CCASFLAGS="$AM_CCASFLAGS -DWOLFSSL_SP_SM2"
+    fi
 fi
 if test "$ENABLED_SP_SMALL" = "yes"; then
     AM_CFLAGS="$AM_CFLAGS -DWOLFSSL_SP_SMALL"

examples/server/server.c

@@ -752,6 +752,18 @@ static void SetKeyShare(WOLFSSL* ssl, int onlyKeyShare, int useX25519,
                 else
                     err_sys("unable to use curve secp256r1");
             } while (ret == WC_PENDING_E);
+        #elif defined(WOLFSSL_SM2)
+            do {
+                ret = wolfSSL_UseKeyShare(ssl, WOLFSSL_ECC_SM2P256V1);
+                if (ret == WOLFSSL_SUCCESS)
+                    groups[count++] = WOLFSSL_ECC_SM2P256V1;
+            #ifdef WOLFSSL_ASYNC_CRYPT
+                else if (ret == WC_PENDING_E)
+                    wolfSSL_AsyncPoll(ssl, WOLF_POLL_FLAG_CHECK_HW);
+            #endif
+                else
+                    err_sys("unable to use curve sm2p256r1");
+            } while (ret == WC_PENDING_E);
         #endif
     #endif
         }

src/include.am

@@ -517,6 +517,35 @@ endif !BUILD_FIPS_CURRENT
 if !BUILD_FIPS_CURRENT
 if BUILD_SM2
 src_libwolfssl@LIBSUFFIX@_la_SOURCES += wolfcrypt/src/sm2.c
+if BUILD_SP
+if BUILD_SP_C32
+src_libwolfssl@LIBSUFFIX@_la_SOURCES += wolfcrypt/src/sp_sm2_c32.c
+endif
+if BUILD_SP_C64
+src_libwolfssl@LIBSUFFIX@_la_SOURCES += wolfcrypt/src/sp_sm2_c64.c
+endif
+
+if BUILD_SP_X86_64
+src_libwolfssl@LIBSUFFIX@_la_SOURCES += wolfcrypt/src/sp_sm2_x86_64.c
+src_libwolfssl@LIBSUFFIX@_la_SOURCES += wolfcrypt/src/sp_sm2_x86_64_asm.S
+endif
+if !BUILD_FIPS_V2
+if BUILD_SP_ARM32
+src_libwolfssl@LIBSUFFIX@_la_SOURCES += wolfcrypt/src/sp_sm2_arm32.c
+endif
+endif
+if BUILD_SP_ARM_THUMB
+src_libwolfssl@LIBSUFFIX@_la_SOURCES += wolfcrypt/src/sp_sm2_armthumb.c
+endif
+if !BUILD_FIPS_V2
+if BUILD_SP_ARM64
+src_libwolfssl@LIBSUFFIX@_la_SOURCES += wolfcrypt/src/sp_sm2_arm64.c
+endif
+endif
+if BUILD_SP_ARM_CORTEX
+src_libwolfssl@LIBSUFFIX@_la_SOURCES += wolfcrypt/src/sp_sm2_cortexm.c
+endif
+endif BUILD_SP
 endif BUILD_SM2
 endif !BUILD_FIPS_CURRENT
 

tests/api.c

@@ -23770,8 +23770,8 @@ static int test_wc_ecc_sm2_sign_hash_ex(void)
         mp_int smallR[1];
         sp_init_size(smallR, 1);
         /* Force failure in _ecc_sm2_calc_r_s by r being too small. */
-        ExpectIntEQ(wc_ecc_sm2_sign_hash_ex(hash, sizeof(hash), rng, key,
-            smallR, s), MP_VAL);
+        ExpectIntLT(wc_ecc_sm2_sign_hash_ex(hash, sizeof(hash), rng, key,
+            smallR, s), 0);
     }
 #endif