/* * netsniff-ng - the packet sniffing beast * Copyright 2011 - 2013 Daniel Borkmann. * Subject to the GPL, version 2. */ #ifndef CURVE_H #define CURVE_H #include #include #include "locking.h" #include "built_in.h" #include "xio.h" #include "crypto_box_curve25519xsalsa20poly1305.h" struct tai { uint64_t x; }; struct taia { struct tai sec; uint32_t nano; uint32_t atto; }; static struct taia tolerance_taia = { .sec.x = 0, .nano = 700000000ULL, .atto = 0, }; #define crypto_box_zerobytes crypto_box_curve25519xsalsa20poly1305_ZEROBYTES #define crypto_box_boxzerobytes crypto_box_curve25519xsalsa20poly1305_BOXZEROBYTES #define crypto_box_noncebytes crypto_box_curve25519xsalsa20poly1305_NONCEBYTES #define crypto_box_beforenmbytes crypto_box_curve25519xsalsa20poly1305_BEFORENMBYTES struct curve25519_proto { unsigned char enonce[crypto_box_noncebytes] __aligned_16; unsigned char dnonce[crypto_box_noncebytes] __aligned_16; unsigned char key[crypto_box_noncebytes] __aligned_16; }; struct curve25519_struct { unsigned char *enc_buf; unsigned char *dec_buf; size_t enc_buf_size; size_t dec_buf_size; struct spinlock enc_lock; struct spinlock dec_lock; }; extern void curve25519_selftest(void); extern void curve25519_alloc_or_maybe_die(struct curve25519_struct *curve); extern void curve25519_free(void *curve); extern int curve25519_pubkey_hexparse_32(unsigned char *bin, size_t blen, const char *ascii, size_t alen); extern int curve25519_proto_init(struct curve25519_proto *proto, unsigned char *pubkey_remote, size_t len, char *home, int server); extern ssize_t curve25519_encode(struct curve25519_struct *curve, struct curve25519_proto *proto, unsigned char *plaintext, size_t size, unsigned char **chipertext); extern ssize_t curve25519_decode(struct curve25519_struct *curve, struct curve25519_proto *proto, unsigned char *chipertext, size_t size, unsigned char **plaintext, struct taia *arrival_taia); static inline void tai_pack(unsigned char *s, struct tai *t) { uint64_t x; x = t->x; s[7] = x & 255; x >>= 8; s[6] = x & 255; x >>= 8; s[5] = x & 255; x >>= 8; s[4] = x & 255; x >>= 8; s[3] = x & 255; x >>= 8; s[2] = x & 255; x >>= 8; s[1] = x & 255; x >>= 8; s[0] = x; } static inline void tai_unpack(unsigned char *s, struct tai *t) { uint64_t x; x = (unsigned char) s[0]; x <<= 8; x += (unsigned char) s[1]; x <<= 8; x += (unsigned char) s[2]; x <<= 8; x += (unsigned char) s[3]; x <<= 8; x += (unsigned char) s[4]; x <<= 8; x += (unsigned char) s[5]; x <<= 8; x += (unsigned char) s[6]; x <<= 8; x += (unsigned char) s[7]; t->x = x; } static inline void taia_pack(unsigned char *s, struct taia *t) { unsigned long x; tai_pack(s, &t->sec); s += 8; x = t->atto; s[7] = x & 255; x >>= 8; s[6] = x & 255; x >>= 8; s[5] = x & 255; x >>= 8; s[4] = x; x = t->nano; s[3] = x & 255; x >>= 8; s[2] = x & 255; x >>= 8; s[1] = x & 255; x >>= 8; s[0] = x; } static inline void taia_unpack(unsigned char *s, struct taia *t) { unsigned long x; tai_unpack(s, &t->sec); s += 8; x = (unsigned char) s[4]; x <<= 8; x += (unsigned char) s[5]; x <<= 8; x += (unsigned char) s[6]; x <<= 8; x += (unsigned char) s[7]; t->atto = x; x = (unsigned char) s[0]; x <<= 8; x += (unsigned char) s[1]; x <<= 8; x += (unsigned char) s[2]; x <<= 8; x += (unsigned char) s[3]; t->nano = x; } #define tai_unix(t, u) ((void) ((t)->x = 4611686018427387914ULL + (uint64_t) (u))) static inline void taia_now(struct taia *t) { struct timeval now; gettimeofday(&now, NULL); tai_unix(&t->sec, now.tv_sec); t->nano = 1000 * now.tv_usec + 500; t->atto = secrand(); } static inline void taia_sub(struct taia *res, const struct taia *u, const struct taia *v) { unsigned long unano = u->nano; unsigned long uatto = u->atto; res->sec.x = u->sec.x - v->sec.x; res->nano = unano - v->nano; res->atto = uatto - v->atto; if (res->atto > uatto) { res->atto += 1000000000UL; --res->nano; } if (res->nano > unano) { res->nano += 1000000000UL; --res->sec.x; } } static inline void taia_add(struct taia *res, const struct taia *u, const struct taia *v) { res->sec.x = u->sec.x + v->sec.x; res->nano = u->nano + v->nano; res->atto = u->atto + v->atto; if (res->atto > 999999999UL) { res->atto -= 1000000000UL; ++res->nano; } if (res->nano > 999999999UL) { res->nano -= 1000000000UL; ++res->sec.x; } } static inline int taia_less(const struct taia *t, const struct taia *u) { if (t->sec.x < u->sec.x) return 1; if (t->sec.x > u->sec.x) return 0; if (t->nano < u->nano) return 1; if (t->nano > u->nano) return 0; return t->atto < u->atto; } static inline int is_good_taia(struct taia *arrival_taia, struct taia *packet_taia) { int is_ts_good = 0; struct taia sub_res; if (taia_less(arrival_taia, packet_taia)) { taia_sub(&sub_res, packet_taia, arrival_taia); if (taia_less(&sub_res, &tolerance_taia)) is_ts_good = 1; else is_ts_good = 0; } else { taia_sub(&sub_res, arrival_taia, packet_taia); if (taia_less(&sub_res, &tolerance_taia)) is_ts_good = 1; else is_ts_good = 0; } return is_ts_good; } #endif /* CURVE_H */ 0 committerDavid S. Miller <davem@davemloft.net>2017-02-07 16:29:30 -0500 commit3efa70d78f218e4c9276b0bac0545e5184c1c47b (patch) treef4abe2f05e173023d2a262afd4aebb1e89fe6985 /tools/power/acpi/man parent76e0e70e6452b971a69cc9794ff4a6715c11f7f2 (diff)parent926af6273fc683cd98cd0ce7bf0d04a02eed6742 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
The conflict was an interaction between a bug fix in the netvsc driver in 'net' and an optimization of the RX path in 'net-next'. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/power/acpi/man')