1 files changed, 2 insertions, 2 deletions
diff --git a/rng.cpp b/rng.cpp
index e06b8be..fc86993 100644
--- a/rng.cpp
+++ b/rng.cpp
@@ -23,7 +23,7 @@ inline uint64_t rotr64(uint64_t x,uint32_t n){
 
 KeyRng::KeyRng(const char *key_,int keylen_)
 		:keylen(keylen_),idx(0),state(0){
-	assert(keylen>0);
+	if(keylen<=0)throw invalid_argument("KeyRng: Key should not be empty");
 	assert(key_);
 	key=new uint8_t[keylen];
 	memcpy(key,key_,keylen);
@@ -32,7 +32,7 @@ KeyRng::KeyRng(const char *key_,int keylen_)
 
 KeyRng::KeyRng(const string &key_)
 		:keylen(key_.size()),idx(0),state(0){
-	assert(keylen>0);
+	if(keylen==0)throw invalid_argument("KeyRng: Key should not be empty");
 	key=new uint8_t[keylen];
 	memcpy(key,key_.data(),keylen);
 	stir();