diff options
| -rw-r--r-- | tdutils/td/utils/Ed25519.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/tdutils/td/utils/Ed25519.cpp b/tdutils/td/utils/Ed25519.cpp index 7128a9cb6..21137cf3a 100644 --- a/tdutils/td/utils/Ed25519.cpp +++ b/tdutils/td/utils/Ed25519.cpp @@ -275,7 +275,11 @@ Result<SecureString> Ed25519::compute_shared_secret(const PublicKey &public_key, #if OPENSSL_VERSION_NUMBER >= 0x10101000L BigNum p = BigNum::from_hex("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffed").move_as_ok(); auto public_y = public_key.as_octet_string(); - public_y.as_mutable_slice()[31] = static_cast<char>(public_y[31] & 127); + MutableSlice pub_slc = public_y.as_mutable_slice(); + if (pub_slc.size() != PublicKey::LENGTH) { + return Status::Error("Wrong public key"); + } + pub_slc[31] = static_cast<char>(public_y[31] & 127); BigNum y = BigNum::from_le_binary(public_y); BigNum y2 = y.clone(); y += 1; |