math/scaf.c, etc.: Only need 3*NPIECE words of scratch space.

[catacomb] / pub / ed25519.c

diff --git a/pub/ed25519.c b/pub/ed25519.c
index 2dc1161..f23c272 100644 (file)
--- a/pub/ed25519.c
+++ b/pub/ed25519.c
@@ -319,7 +319,7 @@ void ed25519ctx_sign(octet sig[ED25519_SIGSZ],
                     const void *m, size_t msz)
 {
   sha512_ctx h;
-  scaf_piece a[NPIECE], r[NPIECE], t[NPIECE], scratch[3*NPIECE + 1];
+  scaf_piece a[NPIECE], r[NPIECE], t[NPIECE], scratch[3*NPIECE];
   scaf_dblpiece tt[2*NPIECE];
   f25519 RX, RY, RZ;
   octet h1[32], pb[PREFIX_BUFSZ], rb[SHA512_HASHSZ];
@@ -388,7 +388,7 @@ int ed25519ctx_verify(const octet K[ED25519_PUBSZ],
                      const octet sig[ED25519_SIGSZ])
 {
   sha512_ctx h;
-  scaf_piece s[NPIECE], t[NPIECE], scratch[3*NPIECE + 1];
+  scaf_piece s[NPIECE], t[NPIECE], scratch[3*NPIECE];
   scaf_dblpiece tt[2*NPIECE];
   f25519 AX, AY, AZ, RX, RY, RZ;
   octet b[PREFIX_BUFSZ];