commit b8513fa6acbe45414f1168f694072e656e2e1499
author gabor-mezei-arm <gabor.mezei@arm.com> Mon Aug 24 09:53:04 2020 +0200
committer gabor-mezei-arm <gabor.mezei@arm.com> Tue Aug 25 19:13:59 2020 +0200
tree 37ba26b2e560e74fd6ceead52ceb195a8636040b
parent d1c98fcf5e04b8f6628ca951131aa1f7d67283de

Initialize return variable to the appropriate error code

The return variable is initilized to make the code more robust against glitch attacks.

Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>

library/pkcs5.c

diff --git a/library/pkcs5.c b/library/pkcs5.c
index 37cca00..82b63bc 100644
--- a/library/pkcs5.c
+++ b/library/pkcs5.c
@@ -223,7 +223,8 @@
                        unsigned int iteration_count,
                        uint32_t key_length, unsigned char *output )
 {
-    int ret = 0, j;
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+    int j;
     unsigned int i;
     unsigned char md1[MBEDTLS_MD_MAX_SIZE];
     unsigned char work[MBEDTLS_MD_MAX_SIZE];