diff options
Diffstat (limited to 'kernel/random.c')
| -rw-r--r-- | kernel/random.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/kernel/random.c b/kernel/random.c index c043cdf..329b7d6 100644 --- a/kernel/random.c +++ b/kernel/random.c @@ -1,6 +1,7 @@ // FIXME: This is mostlikely incredibly inefficent and insecure. #include <crypto/ChaCha20/chacha20.h> #include <crypto/SHA1/sha1.h> +#include <crypto/xoshiro256plusplus/xoshiro256plusplus.h> #include <fs/devfs.h> #include <fs/vfs.h> #include <random.h> @@ -40,7 +41,23 @@ void mix_chacha(void) { internal_chacha_block[COUNT] = 0; } -void get_random(BYTEPTR buffer, u64 len) { +void get_fast_insecure_random(u8 *buffer, u64 len) { + static u8 is_fast_random_seeded = 0; + if (!is_fast_random_seeded) { + uint64_t seed[4]; + get_random((u8 *)&seed, sizeof(seed)); + seed_xoshiro_256_pp(seed); + is_fast_random_seeded = 1; + } + for (; len >= 8; len -= 8, buffer += 8) { + *((uint64_t *)buffer) = xoshiro_256_pp(); + } + for (; len > 0; len--, buffer++) { + *((uint8_t *)buffer) = xoshiro_256_pp() & 0xFF; + } +} + +void get_random(u8* buffer, u64 len) { u8 rand_data[BLOCK_SIZE]; for (; len > 0;) { if (COUNT_MAX - 1 == internal_chacha_block[COUNT]) { |