Adding sigs

secure_enclave/BLSUtils.cpp

@@ -22,9 +22,9 @@ std::string *stringFromKey(libff::alt_bn128_Fr *_key) {
   return new std::string(tmp);
 }
 
-libff::alt_bn128_Fr *keyFromString(std::string &_keyString) {
+libff::alt_bn128_Fr *keyFromString(const char* _keyString) {
 
-  return new libff::alt_bn128_Fr(_keyString.c_str());
+  return new libff::alt_bn128_Fr(_keyString);
 }
 
 bool check_key(const char *_keyString) {
@@ -39,7 +39,7 @@ bool check_key(const char *_keyString) {
   // std::string  keyString =
   // "4160780231445160889237664391382223604184857153814275770598791864649971919844";
 
-  auto key = keyFromString(ks);
+  auto key = keyFromString(ks.c_str());
 
   auto s1 = stringFromKey(key);
 
@@ -54,3 +54,29 @@ bool check_key(const char *_keyString) {
 
   return true;
 }
+
+
+
+char* sign(const char *_keyString, const char* _hashXString, const char* _hashYString,
+           const char* _hashZString) {
+
+         auto key = keyFromString(_keyString);
+
+         libff::alt_bn128_Fq hashX(_hashXString);
+         libff::alt_bn128_Fq hashY(_hashYString);
+         libff::alt_bn128_Fq hashZ(_hashZString);
+
+
+         libff::alt_bn128_G1 hash(hashX, hashY, hashZ);
+
+
+
+
+
+
+
+         libff::alt_bn128_G1 sign = key->as_bigint() * hash;  // sign
+
+         return nullptr;
+
+}

secure_enclave/secure_enclave.c

@@ -39,6 +39,9 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <math.h>
 
+
+#define  MAX_KEY_LENGTH 128
+
 void *(*gmp_realloc_func)(void *, size_t, size_t);
 void *(*oc_realloc_func)(void *, size_t, size_t);
 void (*gmp_free_func)(void *, size_t);
@@ -106,7 +109,7 @@ void encrypt_key(int *err_status, unsigned char *key,
 
   *err_status = -1;
 
-  if (strnlen(key) >= 128)
+  if (strnlen(key) >= MAX_KEY_LENGTH)
     return;
 
   *err_status = -3;
@@ -133,7 +136,7 @@ void encrypt_key(int *err_status, unsigned char *key,
 
   *err_status = -6;
 
-  char key2[128];
+  char key2[MAX_KEY_LENGTH];
 
   decrypt_key(err_status, encrypted_key, sealedLen, key2);
 
@@ -166,4 +169,17 @@ void decrypt_key(int *err_status, unsigned char *encrypted_key,
 
 void sign_message(int *err_status, unsigned char *encrypted_key,
                   uint32_t enc_len, unsigned char *message,
-                  unsigned char *signature) {}
\ No newline at end of file
+                  unsigned char *signature) {
+  
+  uint8_t key[MAX_KEY_LENGTH];
+  
+  decrypt_key(err_status, encrypted_key, enc_len, key);
+
+  if (err_status != 0) {
+    return;
+  }
+
+
+  
+  
+}
\ No newline at end of file