summaryrefslogtreecommitdiff
path: root/crypto
diff options
context:
space:
mode:
Diffstat (limited to 'crypto')
-rw-r--r--crypto/jitterentropy.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/crypto/jitterentropy.c b/crypto/jitterentropy.c
index c7d7f2caa779..fe9c233ec769 100644
--- a/crypto/jitterentropy.c
+++ b/crypto/jitterentropy.c
@@ -89,10 +89,14 @@ struct rand_data {
unsigned int rct_count; /* Number of stuck values */
/* Intermittent health test failure threshold of 2^-30 */
-#define JENT_RCT_CUTOFF 30 /* Taken from SP800-90B sec 4.4.1 */
-#define JENT_APT_CUTOFF 325 /* Taken from SP800-90B sec 4.4.2 */
+ /* From an SP800-90B perspective, this RCT cutoff value is equal to 31. */
+ /* However, our RCT implementation starts at 1, so we subtract 1 here. */
+#define JENT_RCT_CUTOFF (31 - 1) /* Taken from SP800-90B sec 4.4.1 */
+#define JENT_APT_CUTOFF 325 /* Taken from SP800-90B sec 4.4.2 */
/* Permanent health test failure threshold of 2^-60 */
-#define JENT_RCT_CUTOFF_PERMANENT 60
+ /* From an SP800-90B perspective, this RCT cutoff value is equal to 61. */
+ /* However, our RCT implementation starts at 1, so we subtract 1 here. */
+#define JENT_RCT_CUTOFF_PERMANENT (61 - 1)
#define JENT_APT_CUTOFF_PERMANENT 355
#define JENT_APT_WINDOW_SIZE 512 /* Data window size */
/* LSB of time stamp to process */