From c5b1e545a567c52081239bd5d187669640d0146f Mon Sep 17 00:00:00 2001 From: Neil Horman Date: Thu, 5 Feb 2009 16:01:38 +1100 Subject: [PATCH] crypto: ansi_cprng - Panic on CPRNG test failure when in FIPS mode FIPS 140-2 specifies that all access to various cryptographic modules be prevented in the event that any of the provided self tests fail on the various implemented algorithms. We already panic when any of the test in testmgr.c fail when we are operating in fips mode. The continuous test in the cprng here was missed when that was implmented. This code simply checks for the fips_enabled flag if the test fails, and warns us via syslog or panics the box accordingly. Signed-off-by: Neil Horman Signed-off-by: Herbert Xu --- crypto/ansi_cprng.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/crypto/ansi_cprng.c b/crypto/ansi_cprng.c index 74478061ac0..d80ed4c1e00 100644 --- a/crypto/ansi_cprng.c +++ b/crypto/ansi_cprng.c @@ -132,9 +132,15 @@ static int _get_more_prng_bytes(struct prng_context *ctx) */ if (!memcmp(ctx->rand_data, ctx->last_rand_data, DEFAULT_BLK_SZ)) { + if (fips_enabled) { + panic("cprng %p Failed repetition check!\n", + ctx); + } + printk(KERN_ERR "ctx %p Failed repetition check!\n", ctx); + ctx->flags |= PRNG_NEED_RESET; return -EINVAL; } -- 2.11.4.GIT