Fix int type in rsa.cpp

1 files changed, 2 insertions, 2 deletions

diff --git a/rsa.cpp b/rsa.cpp
index 21d252f..ba75e42 100644
--- a/rsa.cpp
+++ b/rsa.cpp
@@ -50,8 +50,8 @@ namespace RSA{
 	Key importKey(const string &repr){
 		string deser=Base64::decode(repr);
 		if(deser.size()<=4)throw invalid_argument("Invalid key string length");
-		int modlen=((uint8_t)deser[0]<<24)+((uint8_t)deser[1]<<16)+
-		           ((uint8_t)deser[2]<<8)+(uint8_t)deser[3];
+		int32_t modlen=((uint8_t)deser[0]<<24)+((uint8_t)deser[1]<<16)+
+		               ((uint8_t)deser[2]<<8)+(uint8_t)deser[3];
 		if((int)deser.size()-4-modlen<=0)throw invalid_argument("Key string incomplete");
 		Key key;
 		key.mod.deserialiseMantissa(string(deser.begin()+4,deser.begin()+(4+modlen)));