3 files changed, 41 insertions, 5 deletions
diff --git a/include/bls_if.h b/include/bls_if.h
index 7872778..79885a0 100644
--- a/include/bls_if.h
+++ b/include/bls_if.h
@@ -14,15 +14,27 @@
 extern "C" {
 #endif
 
-typedef struct blsSecretKey blsSecretKey;
-typedef struct blsPublicKey blsPublicKey;
-typedef struct blsSign blsSign;
-typedef struct blsId blsId;
+typedef struct {
+	uint64_t buf[4];
+} blsId;
+
+typedef struct {
+	uint64_t buf[4];
+} blsSecretKey;
+
+typedef struct {
+	uint64_t buf[4 * 2 * 3];
+} blsPublicKey;
+
+typedef struct {
+	uint64_t buf[4 * 3];
+} blsSign;
 
 void blsInit(void);
 
 blsId *blsIdCreate(void);
 void blsIdDestroy(blsId *id);
+void blsIdPut(const blsId *id);
 void blsIdCopy(blsId *dst, const blsId *src);
 
 // return 0 if success
diff --git a/src/bls_if.cpp b/src/bls_if.cpp
index 7576c93..c64e868 100644
--- a/src/bls_if.cpp
+++ b/src/bls_if.cpp
@@ -57,6 +57,10 @@ void blsIdDestroy(blsId *id)
 {
 	delete (bls::Id*)id;
 }
+void blsIdPut(const blsId *id)
+{
+	std::cout << *(const bls::Id*)id << std::endl;
+}
 void blsIdCopy(blsId *dst, const blsId *src)
 {
 	*((bls::Id*)dst) = *((const bls::Id*)src);
diff --git a/test/bls_if_test.cpp b/test/bls_if_test.cpp
index 6c6e549..c2dc0a9 100644
--- a/test/bls_if_test.cpp
+++ b/test/bls_if_test.cpp
@@ -7,7 +7,6 @@ CYBOZU_TEST_AUTO(bls_if)
 	blsSecretKey *sec;
 	blsPublicKey *pub;
 	blsSign *sign;
-//	blsId *id;
 	const char *msg = "this is a pen";
 	const size_t msgSize = strlen(msg);
 
@@ -30,3 +29,24 @@ CYBOZU_TEST_AUTO(bls_if)
 	blsPublicKeyDestroy(pub);
 	blsSecretKeyDestroy(sec);
 }
+
+CYBOZU_TEST_AUTO(bls_if_use_stack)
+{
+	blsSecretKey sec;
+	blsPublicKey pub;
+	blsSign sign;
+	const char *msg = "this is a pen";
+	const size_t msgSize = strlen(msg);
+
+	blsInit();
+	blsSecretKeyInit(&sec);
+	blsSecretKeyPut(&sec);
+
+	blsSecretKeyGetPublicKey(&sec, &pub);
+	blsPublicKeyPut(&pub);
+
+	blsSecretKeySign(&sec, &sign, msg, msgSize);
+	blsSignPut(&sign);
+
+	printf("verify %d\n", blsSignVerify(&sign, &pub, msg, msgSize));
+}