diff --git a/drivers/ATSHA204/sha256.cpp b/drivers/ATSHA204/sha256.cpp
index 02338a8..7d60def 100644
--- a/drivers/ATSHA204/sha256.cpp
+++ b/drivers/ATSHA204/sha256.cpp
@@ -34,14 +34,17 @@ const uint8_t sha256InitState[] PROGMEM = {
 
 Sha256Class::Sha256Class()
 {
+	/*
 	memset(keyBuffer, 0, BLOCK_LENGTH);
 	memset(innerHash, 0, HASH_LENGTH);
 	memset(buffer.b, 0, BLOCK_LENGTH);
 	memset(state.b, 0, BLOCK_LENGTH);
 	bufferOffset = 0;
 	byteCount = 0;
+	*/
 }
 
+
 void Sha256Class::init(void)
 {
 	memcpy_P(state.b,sha256InitState,32);