diff --git a/src/DidacticEnc.h b/src/DidacticEnc.h
index f53be592e0bb1a666799826c396ac842cd51e4b4..c59524053292dad70e06f4d61625729c3812abe6 100644
--- a/src/DidacticEnc.h
+++ b/src/DidacticEnc.h
@@ -21,6 +21,9 @@ class DidacticEncSymetric
 #define DE_ERROR_KEYLENGHT_LONG -1
 #define DE_ERROR_KEYLENGHT_SHORT -2
 
+#define DE_CS_CORRECT true
+#define DE_CS_INCORRECT false
+
 private:
 	char _bufferCyphertext[MAX_LEN_CYPHERTEXT + 1] = {0};
 	char _bufferPlaintext[MAX_LEN_PLAINTEXT + 1] = {0};