Comment

2026-08-25 08:37:13 +09:00 · 2020-10-06 12:58:31 +02:00
parent e945207b77
commit 29041d8ba1
1 changed files with 4 additions and 0 deletions
@@ -116,6 +116,10 @@ fe25519_invert(fe25519 out, const fe25519 z)
    fe25519_mul(out, t1, t0);
 }

+/*
+ * returns z^((p-5)/8) = z^(2^252-3)
+ * used to compute square roots since we have p=5 (mod 8); see Cohen and Frey.
+ */
 static void
 fe25519_pow22523(fe25519 out, const fe25519 z)
 {