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-rw-r--r--crypto/srp/srp_vfy.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/crypto/srp/srp_vfy.c b/crypto/srp/srp_vfy.c
index 188fad27e1..29b7afcb04 100644
--- a/crypto/srp/srp_vfy.c
+++ b/crypto/srp/srp_vfy.c
@@ -36,10 +36,13 @@ static int t_fromb64(unsigned char *a, size_t alen, const char *src)
int i, j;
int size;
+ if (alen == 0 || alen > INT_MAX)
+ return -1;
+
while (*src && (*src == ' ' || *src == '\t' || *src == '\n'))
++src;
size = strlen(src);
- if (alen > INT_MAX || size > (int)alen)
+ if (size < 0 || size >= (int)alen)
return -1;
i = 0;
@@ -77,7 +80,7 @@ static int t_fromb64(unsigned char *a, size_t alen, const char *src)
if (--i < 0)
break;
}
- while (a[j] == 0 && j <= size)
+ while (j <= size && a[j] == 0)
++j;
i = 0;
while (j <= size)