diff options
Diffstat (limited to 'src/ext/ed25519/ref10/crypto_int64.h')
| -rw-r--r-- | src/ext/ed25519/ref10/crypto_int64.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/ext/ed25519/ref10/crypto_int64.h b/src/ext/ed25519/ref10/crypto_int64.h new file mode 100644 index 0000000000..46e8852ed0 --- /dev/null +++ b/src/ext/ed25519/ref10/crypto_int64.h @@ -0,0 +1,23 @@ +/* Added for Tor. */ + +#ifndef CRYPTO_INT64_H +#define CRYPTO_INT64_H + +#include "torint.h" +#define crypto_int64 int64_t +#define crypto_uint64 uint64_t + +/* + Stop signed left shifts overflowing + by using unsigned types for bitwise operations + */ + +#ifndef OVERFLOW_SAFE_SIGNED_LSHIFT +#define OVERFLOW_SAFE_SIGNED_LSHIFT(s, lshift, utype, stype) \ + ((stype)((utype)(s) << (utype)(lshift))) +#endif + +#define SHL64(s, lshift) \ + OVERFLOW_SAFE_SIGNED_LSHIFT(s, lshift, crypto_uint64, crypto_int64) + +#endif /* CRYPTO_INT64_H */ |