Added gmp

secure_enclave/BLSUtils.cpp

@@ -45,7 +45,7 @@ std::string *stringFromG1(libff::alt_bn128_G1 *_g1) {
   auto sZ = stringFromFq(&_g1->Z);
 
 
-  auto sG1 = new std::string(*sX + *sY + *sZ);
+  auto sG1 = new std::string(*sX + ":" +  *sY + ":" + *sZ);
 
   delete(sX);
   delete(sY);

secure_enclave/BLSUtils.h

@@ -15,5 +15,8 @@
 
 EXTERNC bool check_key(const char* _keyString);
 
+EXTERNC char * sign(const char *_keyString, const char* _hashXString, const char* _hashYString,
+           const char* _hashZString);
+
 
 #endif //SGXD_BLSUTILS_H

secure_enclave/secure_enclave.c

@@ -38,6 +38,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <sgx_trts.h>
 
 #include <math.h>
+#include <string.h>
 
 
 #define  MAX_KEY_LENGTH 128
@@ -109,7 +110,7 @@ void encrypt_key(int *err_status, unsigned char *key,
 
   *err_status = -1;
 
-  if (strnlen(key) >= MAX_KEY_LENGTH)
+  if (strnlen(key, MAX_KEY_LENGTH) == MAX_KEY_LENGTH)
     return;
 
   *err_status = -3;
@@ -170,6 +171,9 @@ 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) {
+
+  *err_status = -1;
+
   
   uint8_t key[MAX_KEY_LENGTH];
   
@@ -179,7 +183,14 @@ void sign_message(int *err_status, unsigned char *encrypted_key,
     return;
   }
 
+  char* sig = sign(key, "", "", "");
+
+  if (sig == NULL) {
+    return;
+  }
+
+  strcpy(signature, sig);
+
+  *err_status = 0;
 
-  
-  
 }
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