mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-14 06:45:21 +02:00
c9a1cb5a8f
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14247 3c298f89-4303-0410-b956-a3cf2f4a3e73
161 lines
4.9 KiB
Diff
161 lines
4.9 KiB
Diff
--- a/drivers/char/random.c
|
|
+++ b/drivers/char/random.c
|
|
@@ -129,6 +129,9 @@
|
|
* unsigned int value);
|
|
* void add_interrupt_randomness(int irq);
|
|
*
|
|
+ * void random_input_words(__u32 *buf, size_t wordcount, int ent_count)
|
|
+ * int random_input_wait(void);
|
|
+ *
|
|
* add_input_randomness() uses the input layer interrupt timing, as well as
|
|
* the event type information from the hardware.
|
|
*
|
|
@@ -140,6 +143,13 @@
|
|
* a better measure, since the timing of the disk interrupts are more
|
|
* unpredictable.
|
|
*
|
|
+ * random_input_words() just provides a raw block of entropy to the input
|
|
+ * pool, such as from a hardware entropy generator.
|
|
+ *
|
|
+ * random_input_wait() suspends the caller until such time as the
|
|
+ * entropy pool falls below the write threshold, and returns a count of how
|
|
+ * much entropy (in bits) is needed to sustain the pool.
|
|
+ *
|
|
* All of these routines try to estimate how many bits of randomness a
|
|
* particular randomness source. They do this by keeping track of the
|
|
* first and second order deltas of the event timings.
|
|
@@ -689,6 +699,61 @@ void add_disk_randomness(struct gendisk
|
|
}
|
|
#endif
|
|
|
|
+/*
|
|
+ * random_input_words - add bulk entropy to pool
|
|
+ *
|
|
+ * @buf: buffer to add
|
|
+ * @wordcount: number of __u32 words to add
|
|
+ * @ent_count: total amount of entropy (in bits) to credit
|
|
+ *
|
|
+ * this provides bulk input of entropy to the input pool
|
|
+ *
|
|
+ */
|
|
+void random_input_words(__u32 *buf, size_t wordcount, int ent_count)
|
|
+{
|
|
+ mix_pool_bytes(&input_pool, buf, wordcount*4);
|
|
+
|
|
+ credit_entropy_bits(&input_pool, ent_count);
|
|
+
|
|
+ DEBUG_ENT("crediting %d bits => %d\n",
|
|
+ ent_count, input_pool.entropy_count);
|
|
+ /*
|
|
+ * Wake up waiting processes if we have enough
|
|
+ * entropy.
|
|
+ */
|
|
+ if (input_pool.entropy_count >= random_read_wakeup_thresh)
|
|
+ wake_up_interruptible(&random_read_wait);
|
|
+}
|
|
+EXPORT_SYMBOL(random_input_words);
|
|
+
|
|
+/*
|
|
+ * random_input_wait - wait until random needs entropy
|
|
+ *
|
|
+ * this function sleeps until the /dev/random subsystem actually
|
|
+ * needs more entropy, and then return the amount of entropy
|
|
+ * that it would be nice to have added to the system.
|
|
+ */
|
|
+int random_input_wait(void)
|
|
+{
|
|
+ int count;
|
|
+
|
|
+ wait_event_interruptible(random_write_wait,
|
|
+ input_pool.entropy_count < random_write_wakeup_thresh);
|
|
+
|
|
+ count = random_write_wakeup_thresh - input_pool.entropy_count;
|
|
+
|
|
+ /* likely we got woken up due to a signal */
|
|
+ if (count <= 0) count = random_read_wakeup_thresh;
|
|
+
|
|
+ DEBUG_ENT("requesting %d bits from input_wait()er %d<%d\n",
|
|
+ count,
|
|
+ input_pool.entropy_count, random_write_wakeup_thresh);
|
|
+
|
|
+ return count;
|
|
+}
|
|
+EXPORT_SYMBOL(random_input_wait);
|
|
+
|
|
+
|
|
#define EXTRACT_SIZE 10
|
|
|
|
/*********************************************************************
|
|
--- a/fs/fcntl.c
|
|
+++ b/fs/fcntl.c
|
|
@@ -140,6 +140,7 @@ SYSCALL_DEFINE1(dup, unsigned int, filde
|
|
}
|
|
return ret;
|
|
}
|
|
+EXPORT_SYMBOL(sys_dup);
|
|
|
|
#define SETFL_MASK (O_APPEND | O_NONBLOCK | O_NDELAY | FASYNC | O_DIRECT | O_NOATIME)
|
|
|
|
--- a/include/linux/miscdevice.h
|
|
+++ b/include/linux/miscdevice.h
|
|
@@ -12,6 +12,7 @@
|
|
#define APOLLO_MOUSE_MINOR 7
|
|
#define PC110PAD_MINOR 9
|
|
/*#define ADB_MOUSE_MINOR 10 FIXME OBSOLETE */
|
|
+#define CRYPTODEV_MINOR 70 /* /dev/crypto */
|
|
#define WATCHDOG_MINOR 130 /* Watchdog timer */
|
|
#define TEMP_MINOR 131 /* Temperature Sensor */
|
|
#define RTC_MINOR 135
|
|
--- a/include/linux/random.h
|
|
+++ b/include/linux/random.h
|
|
@@ -8,6 +8,7 @@
|
|
#define _LINUX_RANDOM_H
|
|
|
|
#include <linux/ioctl.h>
|
|
+#include <linux/types.h> /* for __u32 in user space */
|
|
|
|
/* ioctl()'s for the random number generator */
|
|
|
|
@@ -32,6 +33,30 @@
|
|
/* Clear the entropy pool and associated counters. (Superuser only.) */
|
|
#define RNDCLEARPOOL _IO( 'R', 0x06 )
|
|
|
|
+#ifdef CONFIG_FIPS_RNG
|
|
+
|
|
+/* Size of seed value - equal to AES blocksize */
|
|
+#define AES_BLOCK_SIZE_BYTES 16
|
|
+#define SEED_SIZE_BYTES AES_BLOCK_SIZE_BYTES
|
|
+/* Size of AES key */
|
|
+#define KEY_SIZE_BYTES 16
|
|
+
|
|
+/* ioctl() structure used by FIPS 140-2 Tests */
|
|
+struct rand_fips_test {
|
|
+ unsigned char key[KEY_SIZE_BYTES]; /* Input */
|
|
+ unsigned char datetime[SEED_SIZE_BYTES]; /* Input */
|
|
+ unsigned char seed[SEED_SIZE_BYTES]; /* Input */
|
|
+ unsigned char result[SEED_SIZE_BYTES]; /* Output */
|
|
+};
|
|
+
|
|
+/* FIPS 140-2 RNG Variable Seed Test. (Superuser only.) */
|
|
+#define RNDFIPSVST _IOWR('R', 0x10, struct rand_fips_test)
|
|
+
|
|
+/* FIPS 140-2 RNG Monte Carlo Test. (Superuser only.) */
|
|
+#define RNDFIPSMCT _IOWR('R', 0x11, struct rand_fips_test)
|
|
+
|
|
+#endif /* #ifdef CONFIG_FIPS_RNG */
|
|
+
|
|
struct rand_pool_info {
|
|
int entropy_count;
|
|
int buf_size;
|
|
@@ -48,6 +73,10 @@ extern void add_input_randomness(unsigne
|
|
unsigned int value);
|
|
extern void add_interrupt_randomness(int irq);
|
|
|
|
+extern void random_input_words(__u32 *buf, size_t wordcount, int ent_count);
|
|
+extern int random_input_wait(void);
|
|
+#define HAS_RANDOM_INPUT_WAIT 1
|
|
+
|
|
extern void get_random_bytes(void *buf, int nbytes);
|
|
void generate_random_uuid(unsigned char uuid_out[16]);
|
|
|