Merge pull request #6503 from SparkiDev/mp_test_tfm_mips

TFM: fix big endian reading a zero length buffer
2023-06-21 11:05:40 -07:00 · 2023-06-21 11:05:40 -07:00 · 70c3e84735
parent 3b3c175af0 e17f86d145
commit 70c3e84735
1 changed files with 4 additions and 0 deletions
--- a/wolfcrypt/src/tfm.c
+++ b/wolfcrypt/src/tfm.c
@ -3864,6 +3864,10 @@ int fp_read_unsigned_bin(fp_int *a, const unsigned char *b, int c)
  /* zero the int */
  fp_zero (a);

+  if (c == 0) {
+      return FP_OKAY;
+  }
+
  /* if input b excess max, then truncate */
  if (c > 0 && (word32)c > maxC) {
     int excess = (c - maxC);