fixes #2341: electrum 4/5 mod_512 () infinite loop fix

2020-03-31 11:01:47 +02:00
parent 2d8893110c
commit 53d2e45795
1 changed files with 3 additions and 0 deletions
--- a/OpenCL/inc_ecc_secp256k1.cl
+++ b/OpenCL/inc_ecc_secp256k1.cl
@@ -512,6 +512,9 @@ DECLSPEC void mod_512 (u32 *n)

    // substract (a -= r):

+    if ((r[ 0] | r[ 1] | r[ 2] | r[ 3] | r[ 4] | r[ 5] | r[ 6] | r[ 7] |
+         r[ 8] | r[ 9] | r[10] | r[11] | r[12] | r[13] | r[14] | r[15]) == 0) break;
+
    r[ 0] = a[ 0] - r[ 0];
    r[ 1] = a[ 1] - r[ 1];
    r[ 2] = a[ 2] - r[ 2];