From 02634200cb24052acb48137c053d65c8e054e73d Mon Sep 17 00:00:00 2001
From: Honza <rychnovsky.honza@gmail.com>
Date: Sun, 14 Apr 2024 15:15:01 +0200
Subject: [PATCH] [#270] Audit issue C: Properly check read()

---
 .../unixMain/kotlin/cash/z/ecc/android/random/SecureRandom.kt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/bip39-lib/src/unixMain/kotlin/cash/z/ecc/android/random/SecureRandom.kt b/bip39-lib/src/unixMain/kotlin/cash/z/ecc/android/random/SecureRandom.kt
index 05dd93d..db596e4 100644
--- a/bip39-lib/src/unixMain/kotlin/cash/z/ecc/android/random/SecureRandom.kt
+++ b/bip39-lib/src/unixMain/kotlin/cash/z/ecc/android/random/SecureRandom.kt
@@ -26,7 +26,9 @@ actual class SecureRandom {
                     bytes.usePinned {
                         read(randomData, it.addressOf(0), bytes.size.convert())
                     }
-                check(result >= 0) {
+                // Warning: Operator '==' cannot be applied to 'ssize_t /* = Long */' and 'Int'
+                // Converting both sides to Long to ensure they fit in the range
+                check(result.toLong() == bytes.size.toLong()) {
                     "Could not get random number from /dev/urandom"
                 }
             }