Added gmp

secure_enclave/secure_enclave.c

@@ -132,6 +132,8 @@ void encrypt_key(int *err_status, unsigned char* key, unsigned char* encrypted_k
 
   *err_status = -4;
 
+  memset(encrypted_key, 0, sealedLen);
+
   if (sgx_seal_data(0, NULL, strlen(key) + 1, key,  sealedLen, encrypted_key) != SGX_SUCCESS)
     return;
 
@@ -140,3 +142,11 @@ void encrypt_key(int *err_status, unsigned char* key, unsigned char* encrypted_k
   *err_status = 0;
 }
 
+
+void decrypt_key(int *err_status, unsigned char* encrypted_key, unsigned char* key, uint32_t *dec_len) {
+
+  *err_status = -1;
+
+}
+
+

secure_enclave/secure_enclave.edl

@@ -25,6 +25,13 @@ enclave {
 		    [user_check] int *err_status,
 		    [in, count = 128] unsigned char* key,
 		    [out, count = 1024] unsigned char* encrypted_key, [user_check] uint32_t *enc_len);
+
+		public void decrypt_key (
+        		    [user_check] int *err_status,
+        		    [in, count = 1024] unsigned char* encrypted_key,
+        		    [out, count = 128] unsigned char* key, [user_check] uint32_t *dec_len);
+
+
 	};