Add software SDF implementation

The soft_sdf will replace sdf_dummy library for buiding testing apps.

CMakeLists.txt

@@ -75,6 +75,7 @@ set(tools
 	tools/sm4.c
 	tools/sm3.c
 	tools/sm3hmac.c
+	tools/sm3xmss_keygen.c
 	tools/sm2keygen.c
 	tools/sm2sign.c
 	tools/sm2verify.c
@@ -285,7 +286,7 @@ if (ENABLE_SM3_XMSS)
 	message(STATUS "ENABLE_SM3_XMSS is ON")
 	list(APPEND src src/sm3_xmss.c)
 
-	option(ENABLE_SM3_XMSS_CROSSCHECK "Enable XMSS SHA-256 cross-check" ON)
+	option(ENABLE_SM3_XMSS_CROSSCHECK "Enable XMSS SHA-256 cross-check" OFF)
 	if (ENABLE_SM3_XMSS_CROSSCHECK)
 		message(STATUS "ENABLE_SM3_XMSS_CROSSCHECK is ON")
 		add_definitions(-DENABLE_SM3_XMSS_CROSSCHECK)
@@ -331,6 +332,7 @@ if (ENABLE_CHACHA20)
 endif()
 
 
+
 option(ENABLE_INTEL_RDRAND "Enable Intel RDRAND instructions" OFF)
 option(ENABLE_INTEL_RDSEED "Enable Intel RDSEED instructions" OFF)
 
@@ -361,12 +363,20 @@ if (ENABLE_INTEL_RDRAND)
 endif()
 
 
+option(ENABLE_SM4_CBC_MAC "Enable SM4-CBC-MAC" OFF)
+if (ENABLE_SM4_CBC_MAC)
+	message(STATUS "ENABLE_SM4_CBC_MAC is ON")
+	list(APPEND src src/sm4_cbc_mac.c)
+	list(APPEND tests sm4_cbc_mac)
+	list(APPEND demos sm4_cbc_mac_demo)
+endif()
+
+
 option(ENABLE_GMT_0105_RNG "Enable GM/T 0105 Software RNG" OFF)
 if (ENABLE_GMT_0105_RNG)
-	message(STATUS "ENABLE_GMT_0105_RNG")
+	message(STATUS "ENABLE_GMT_0105_RNG is ON")
-	list(APPEND src src/sm3_rng.c src/sm4_cbc_mac.c src/sm4_rng.c)
+	list(APPEND src src/sm3_rng.c src/sm4_rng.c)
-	list(APPEND tests sm3_rng sm4_cbc_mac sm4_rng)
+	list(APPEND tests sm3_rng sm4_rng)
-	list(APPEND demos sm4_cbc_mac_demo)
 endif()
 
 
@@ -400,6 +410,9 @@ endif()
 add_library(gmssl ${src})
 
 
+
+
+
 if (WIN32)
 	target_link_libraries(gmssl -lws2_32)
 elseif (APPLE)
@@ -421,6 +434,16 @@ SET_TARGET_PROPERTIES(gmssl PROPERTIES VERSION 3.1 SOVERSION 3)
 install(TARGETS gmssl ARCHIVE DESTINATION lib LIBRARY DESTINATION lib RUNTIME DESTINATION bin)
 install(DIRECTORY ${CMAKE_SOURCE_DIR}/include/gmssl DESTINATION include)
 
+
+option(ENABLE_SOFT_SDF "Enable Software SDF Implementation" OFF)
+if (ENABLE_SOFT_SDF)
+	message(STATUS "ENABLE_SOFT_SDF is ON")
+	add_library(soft_sdf SHARED src/sdf/soft_sdf.c)
+	target_link_libraries(soft_sdf PRIVATE gmssl)
+	set_target_properties(soft_sdf PROPERTIES VERSION 3.1 SOVERSION 3)
+endif()
+
+
 if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "iOS")
 
 	add_library(sdf_dummy SHARED src/sdf/sdf_dummy.c)

src/sdf/sdf.h

@@ -1,5 +1,5 @@
 /*
- *  Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
+ *  Copyright 2014-2023 The GmSSL Project. All Rights Reserved.
  *
  *  Licensed under the Apache License, Version 2.0 (the License); you may
  *  not use this file except in compliance with the License.
@@ -86,6 +86,9 @@ typedef struct ECCCipher_st {
 	unsigned char M[32];
 	unsigned int L;
 	unsigned char C[1];
+	// Extend sizeof(C) to SM2_MAX_PLAINTEXT_SIZE
+	// gmssl/sm2.h: SM2_MAX_PLAINTEXT_SIZE = 255
+	unsigned char C_[254];
 } ECCCipher;
 
 typedef struct ECCSignature_st {

src/sgd.h

@@ -65,9 +65,9 @@
 #define SGD_RSA_SIGN		(SGD_RSA|SGD_PK_SIGN) // FIXME: correct?	
 #define SGD_RSA_ENC		(SGD_RSA|SGD_PK_ENC) // FIXME: correct?		
 #define SGD_SM2			0x00020100
-#define SGD_SM2_1		0x00020200
+#define SGD_SM2_1		0x00020200 // SM2 Signature Scheme
-#define SGD_SM2_2		0x00020400
+#define SGD_SM2_2		0x00020400 // SM2 Key Exchange Protocol
-#define SGD_SM2_3		0x00020800
+#define SGD_SM2_3		0x00020800 // SM2 Encryption Scheme
 
 /* hash */
 #define SGD_SM3			0x00000001