use setHashOf

3 files changed, 8 insertions, 2 deletions

diff --git a/include/bls/bls.hpp b/include/bls/bls.hpp
index ddfbf50..f3a29a0 100644
--- a/include/bls/bls.hpp
+++ b/include/bls/bls.hpp
@@ -136,6 +136,8 @@ public:
 	void set(const uint64_t *p);
 	// bufSize is truncted/zero extended to keySize
 	void setLittleEndian(const void *buf, size_t bufSize);
+	// set hash of buf
+	void setHashOf(const void *buf, size_t bufSize);
 	void getPublicKey(PublicKey& pub) const;
 	// constant time sign
 	void sign(Signature& sig, const std::string& m) const;
diff --git a/src/bls.cpp b/src/bls.cpp
index 609e256..7b6f40b 100644
--- a/src/bls.cpp
+++ b/src/bls.cpp
@@ -419,6 +419,10 @@ void SecretKey::setLittleEndian(const void *buf, size_t bufSize)
 {
 	getInner().s.setArrayMask((const char *)buf, bufSize);
 }
+void SecretKey::setHashOf(const void *buf, size_t bufSize)
+{
+	getInner().s.setHashOf(buf, bufSize);
+}
 
 void SecretKey::getPublicKey(PublicKey& pub) const
 {
diff --git a/src/bls_if.cpp b/src/bls_if.cpp
index 192a45d..2498759 100644
--- a/src/bls_if.cpp
+++ b/src/bls_if.cpp
@@ -143,8 +143,8 @@ size_t blsSecretKeyGetHexStr(char *buf, size_t maxBufSize, const blsSecretKey *s
 int blsSecretKeySetToHashOf(blsSecretKey *sec, const void *buf, size_t bufSize)
 	try
 {
-	std::string s = mcl::fp::hash(384, (const char *)buf, bufSize);
-	return blsSecretKeySetLittleEndian(sec, s.c_str(), s.size());
+	((bls::SecretKey*)sec)->setHashOf(buf, bufSize);
+	return 0;
 } catch (std::exception& e) {
 	fprintf(stderr, "err blsSecretKeySetByCSPRNG %s\n", e.what());
 	return -1;