nacl: apply fix for overflow

See https://github.com/dchest/tweetnacl-js/issues/187
2021-01-07 15:05:36 +01:00 · 2021-01-07 15:05:36 +01:00 · a3313ce3f8
commit a3313ce3f8
parent e319e99ef9
1 changed files with 1 additions and 1 deletions
--- a/packages/taler-wallet-core/src/crypto/primitives/nacl-fast.ts
+++ b/packages/taler-wallet-core/src/crypto/primitives/nacl-fast.ts
@ -1548,7 +1548,7 @@ function modL(r: Uint8Array, x: Float64Array): void {
    carry = 0;
    for (j = i - 32, k = i - 12; j < k; ++j) {
      x[j] += carry - 16 * x[i] * L[j - (i - 32)];
-      carry = (x[j] + 128) >> 8;
+      carry = Math.floor((x[j] + 128) / 256);
      x[j] -= carry * 256;
    }
    x[j] += carry;