Fixes

secure_enclave/BLSEnclave.cpp

@@ -126,7 +126,7 @@ void checkKey(int *err_status, char *err_string, const char *_keyString) {
 
 
 bool enclave_sign(const char *_keyString, const char *_hashXString, const char *_hashYString,
-          char sig[BUF_LEN]) {
+          char* sig) {
 
 
     libff::init_alt_bn128_params();
@@ -134,6 +134,10 @@ bool enclave_sign(const char *_keyString, const char *_hashXString, const char *
 
     auto key = keyFromString(_keyString);
 
+    if (key == nullptr) {
+        throw std::exception();
+    }
+
     libff::alt_bn128_Fq hashX(_hashXString);
     libff::alt_bn128_Fq hashY(_hashYString);
     libff::alt_bn128_Fq hashZ = 1;
@@ -142,18 +146,26 @@ bool enclave_sign(const char *_keyString, const char *_hashXString, const char *
     libff::alt_bn128_G1 hash(hashX, hashY, hashZ);
 
 
+
+
     libff::alt_bn128_G1 sign = key->as_bigint() * hash;  // sign
 
     sign.to_affine_coordinates();
 
+
+
     auto r = stringFromG1(&sign);
 
     memset(sig, 0, BUF_LEN);
 
+
+
     strncpy(sig, r->c_str(), BUF_LEN);
 
     delete r;
 
+
+
     return true;
 
 

secure_enclave/BLSEnclave.h

@@ -19,8 +19,7 @@ EXTERNC void check_key(int *err_status, char *err_string, const char* _keyString
 
 
 
-EXTERNC bool enclave_sign(const char *_keyString, const char* _hashXString, const char* _hashYString,
-           char* _sig);
+EXTERNC bool enclave_sign(const char *_keyString, const char* _hashXString, const char* _hashYString, char* _sig);
 
 
 

secure_enclave/secure_enclave.c

@@ -255,7 +255,7 @@ void bls_sign_message(int *err_status, char *err_string, uint8_t *encrypted_key,
         return;
     }
 
-   // enclave_sign(key, _hashX, _hashY, sig);
+    enclave_sign(key, _hashX, _hashY, sig);
 
     strncpy(signature, sig, BUF_LEN);