Fix bug in ECDSA signing.

data61 · Apr 9, 2024 · 1771535 · 1771535
1 parent 74baee3
commit 1771535
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/ECDSA/sign.hpp b/ECDSA/sign.hpp
@@ -44,6 +44,7 @@ inline P256Element::Scalar hash_to_scalar(const unsigned char* message, size_t l
     assert(res.size() == crypto_hash_sha256_BYTES);
     crypto_hash_sha256((unsigned char*) res.get_ptr(), message, length);
     size_t size = crypto_hash_sha256_BYTES;
+    char* ptr = (char*) res.get_ptr();
     for(size_t i = 0; i < size / 2; i++) {
         swap(ptr[i], ptr[size - 1 - i]);
     }