Use dynamic_cast in ed25519 (GH #829)

1 files changed, 5 insertions, 5 deletions

diff --git a/xed25519.cpp b/xed25519.cpp
index 42694050..1e3e7f40 100644
--- a/xed25519.cpp
+++ b/xed25519.cpp
@@ -674,8 +674,8 @@ size_t ed25519Signer::SignAndRestart(RandomNumberGenerator &rng, PK_MessageAccum
 {

     CRYPTOPP_ASSERT(signature != NULLPTR); CRYPTOPP_UNUSED(rng);

 

-    ed25519_MessageAccumulator& accum = static_cast<ed25519_MessageAccumulator&>(messageAccumulator);

-    const ed25519PrivateKey& pk = static_cast<const ed25519PrivateKey&>(GetPrivateKey());

+    ed25519_MessageAccumulator& accum = dynamic_cast<ed25519_MessageAccumulator&>(messageAccumulator);

+    const ed25519PrivateKey& pk = dynamic_cast<const ed25519PrivateKey&>(GetPrivateKey());

     int ret = Donna::ed25519_sign(accum.data(), accum.size(), pk.GetPrivateKeyBytePtr(), pk.GetPublicKeyBytePtr(), signature);

     CRYPTOPP_ASSERT(ret == 0);

 

@@ -689,7 +689,7 @@ size_t ed25519Signer::SignStream (RandomNumberGenerator &rng, std::istream& stre
 {

     CRYPTOPP_ASSERT(signature != NULLPTR); CRYPTOPP_UNUSED(rng);

 

-    const ed25519PrivateKey& pk = static_cast<const ed25519PrivateKey&>(GetPrivateKey());

+    const ed25519PrivateKey& pk = dynamic_cast<const ed25519PrivateKey&>(GetPrivateKey());

     int ret = Donna::ed25519_sign(stream, pk.GetPrivateKeyBytePtr(), pk.GetPublicKeyBytePtr(), signature);

     CRYPTOPP_ASSERT(ret == 0);

 

@@ -853,14 +853,14 @@ ed25519Verifier::ed25519Verifier(BufferedTransformation &params)
 

 ed25519Verifier::ed25519Verifier(const ed25519Signer& signer)

 {

-    const ed25519PrivateKey& priv = static_cast<const ed25519PrivateKey&>(signer.GetPrivateKey());

+    const ed25519PrivateKey& priv = dynamic_cast<const ed25519PrivateKey&>(signer.GetPrivateKey());

     priv.MakePublicKey(AccessPublicKey());

 }

 

 bool ed25519Verifier::VerifyAndRestart(PK_MessageAccumulator &messageAccumulator) const

 {

     ed25519_MessageAccumulator& accum = static_cast<ed25519_MessageAccumulator&>(messageAccumulator);

-    const ed25519PublicKey& pk = static_cast<const ed25519PublicKey&>(GetPublicKey());

+    const ed25519PublicKey& pk = dynamic_cast<const ed25519PublicKey&>(GetPublicKey());

     int ret = Donna::ed25519_sign_open(accum.data(), accum.size(), pk.GetPublicKeyBytePtr(), accum.signature());

     accum.Restart();