diff options
Diffstat (limited to 'crypto/ansi_cprng.c')
| -rw-r--r-- | crypto/ansi_cprng.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/crypto/ansi_cprng.c b/crypto/ansi_cprng.c index 0fac8ffc2fb7..d80ed4c1e009 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; } @@ -338,7 +344,16 @@ static int cprng_init(struct crypto_tfm *tfm) spin_lock_init(&ctx->prng_lock); - return reset_prng_context(ctx, NULL, DEFAULT_PRNG_KSZ, NULL, NULL); + if (reset_prng_context(ctx, NULL, DEFAULT_PRNG_KSZ, NULL, NULL) < 0) + return -EINVAL; + + /* + * after allocation, we should always force the user to reset + * so they don't inadvertently use the insecure default values + * without specifying them intentially + */ + ctx->flags |= PRNG_NEED_RESET; + return 0; } static void cprng_exit(struct crypto_tfm *tfm) |