Merge pull request #19 from pennam/sn-compatibility

Add serialNumber(byte sn[], size_t length)

Author: pennam

Diff for: src/SecureElement.cpp

@@ -60,3 +60,20 @@ int SecureElement::SHA256(const uint8_t *buffer, size_t size, uint8_t *digest)
 #endif
 }
 
+int SecureElement::serialNumber(byte sn[], size_t length)
+{
+#if defined(SECURE_ELEMENT_IS_SE050)
+  return _secureElement.serialNumber(sn, length);
+#else
+  if (sn == nullptr || length < SE_SN_LENGTH) {
+    return 0;
+  }
+  uint8_t tmp[12];
+  if (!_secureElement.serialNumber(tmp)) {
+    return 0;
+  }
+  memcpy(sn, tmp, SE_SN_LENGTH);
+  return 1;
+#endif
+}
+

Diff for: src/SecureElement.h

@@ -37,6 +37,14 @@
 #define SE_SHA256_BUFFER_LENGTH  32
 #define SE_CERT_BUFFER_LENGTH  1024
 
+#if defined(SECURE_ELEMENT_IS_SE050)
+  #define SE_SN_LENGTH SE05X_SN_LENGTH
+#elif defined(SECURE_ELEMENT_IS_ECCX08)
+  #define SE_SN_LENGTH 9
+#elif defined(SECURE_ELEMENT_IS_SOFTSE)
+  #define SE_SN_LENGTH 6
+#endif
+
 /******************************************************************************
  * CLASS DECLARATION
  ******************************************************************************/
@@ -52,6 +60,7 @@ class SecureElement
 
   inline int serialNumber(byte sn[]) { return _secureElement.serialNumber(sn); }
   inline String serialNumber() { return _secureElement.serialNumber(); }
+  int serialNumber(byte sn[], size_t length);
 
   inline long random(long min, long max) { return this->_secureElement.random(min, max); };
   inline long random(long max) { return this->_secureElement.random(max); };