4 files changed, 14 insertions, 0 deletions
diff --git a/pyecsca/codegen/hash/hash.h b/pyecsca/codegen/hash/hash.h
index 9e79b61..7121cd4 100644
--- a/pyecsca/codegen/hash/hash.h
+++ b/pyecsca/codegen/hash/hash.h
@@ -18,4 +18,6 @@ void hash_init(void *ctx);
 
 void hash_final(void *ctx, int size, const uint8_t *msg, uint8_t *digest);
 
+void hash_free_ctx(void *ctx);
+
 #endif //HASH_H_
 \ No newline at end of file
diff --git a/pyecsca/codegen/hash/none.c b/pyecsca/codegen/hash/none.c
index 79690e8..b40adc3 100644
--- a/pyecsca/codegen/hash/none.c
+++ b/pyecsca/codegen/hash/none.c
@@ -17,4 +17,8 @@ void hash_init(void *ctx) {
 
 void hash_final(void *ctx, int size, const uint8_t *msg, uint8_t *digest) {
     memcpy(digest, msg, size);
+}
+
+void hash_free_ctx(void *ctx) {
+
 }
 \ No newline at end of file
diff --git a/pyecsca/codegen/hash/sha1.c b/pyecsca/codegen/hash/sha1.c
index cf6ca3e..213ed11 100644
--- a/pyecsca/codegen/hash/sha1.c
+++ b/pyecsca/codegen/hash/sha1.c
@@ -187,3 +187,7 @@ void hash_final(void *ctx, int size, const uint8_t *msg, uint8_t *digest) {
 	sha1_lastBlock(ctx, msg, length);
 	sha1_ctx2hash(digest, ctx);
 }
+
+void hash_free_ctx(void *ctx) {
+	free(ctx);
+}
diff --git a/pyecsca/codegen/hash/sha2.c b/pyecsca/codegen/hash/sha2.c
index d2ddf6f..2b7f11d 100644
--- a/pyecsca/codegen/hash/sha2.c
+++ b/pyecsca/codegen/hash/sha2.c
@@ -334,4 +334,8 @@ void hash_final(void* ctx, int size, const uint8_t* msg, uint8_t* digest) {
 	}
 	sha2_lastBlock(ctx, msg, length_b);
 	sha2_ctx2hash(digest, ctx);
+}
+
+void hash_free_ctx(void *ctx) {
+	free(ctx);
 }
 \ No newline at end of file