diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/sha1-arm64.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/src/sha1-arm64.c b/src/sha1-arm64.c new file mode 100644 index 0000000..bdefd3a --- /dev/null +++ b/src/sha1-arm64.c @@ -0,0 +1,83 @@ +#include <arm_acle.h> +#include <arm_neon.h> + +#include "sha1.h" + +#define R(mi, mj, mk, ml, ei, ej, ti, c, magic) \ + do { \ + ei = vsha1h_u32(vgetq_lane_u32(abcd, 0)); \ + abcd = vsha1##c##q_u32(abcd, ej, ti); \ + ti = vaddq_u32(mi, vdupq_n_u32(magic)); \ + mj = vsha1su1q_u32(mj, mi); \ + mk = vsha1su0q_u32(mk, ml, mi); \ + } while (0) + +void +sha1hashblk(sha1_t *s, const uint8_t *blk) +{ + uint32_t e0, e_save, e1; + uint32x4_t abcd, abcd_save; + uint32x4_t tmp0, tmp1; + uint32x4_t msg0, msg1, msg2, msg3; + + abcd_save = abcd = vld1q_u32(s->dgst); + e_save = e0 = s->dgst[4]; + + /* Load message */ + msg0 = vld1q_u32((uint32_t *)(blk + 0x00)); + msg1 = vld1q_u32((uint32_t *)(blk + 0x10)); + msg2 = vld1q_u32((uint32_t *)(blk + 0x20)); + msg3 = vld1q_u32((uint32_t *)(blk + 0x30)); + + /* Reverse for little endian */ + msg0 = vreinterpretq_u32_u8(vrev32q_u8(vreinterpretq_u8_u32(msg0))); + msg1 = vreinterpretq_u32_u8(vrev32q_u8(vreinterpretq_u8_u32(msg1))); + msg2 = vreinterpretq_u32_u8(vrev32q_u8(vreinterpretq_u8_u32(msg2))); + msg3 = vreinterpretq_u32_u8(vrev32q_u8(vreinterpretq_u8_u32(msg3))); + + tmp0 = vaddq_u32(msg0, vdupq_n_u32(0x5A827999)); + tmp1 = vaddq_u32(msg1, vdupq_n_u32(0x5A827999)); + + /* Rounds 0–3 */ + e1 = vsha1h_u32(vgetq_lane_u32(abcd, 0)); + abcd = vsha1cq_u32(abcd, e0, tmp0); + tmp0 = vaddq_u32(msg2, vdupq_n_u32(0x5A827999)); + msg0 = vsha1su0q_u32(msg0, msg1, msg2); + + R(msg3, msg0, msg1, msg2, e0, e1, tmp1, c, 0x5A827999); /* Rounds 04–07 */ + R(msg0, msg1, msg2, msg3, e1, e0, tmp0, c, 0x5A827999); /* Rounds 08–11 */ + R(msg1, msg2, msg3, msg0, e0, e1, tmp1, c, 0x6ED9EBA1); /* Rounds 12–15 */ + R(msg2, msg3, msg0, msg1, e1, e0, tmp0, c, 0x6ED9EBA1); /* Rounds 16–19 */ + R(msg3, msg0, msg1, msg2, e0, e1, tmp1, p, 0x6ED9EBA1); /* Rounds 20–23 */ + R(msg0, msg1, msg2, msg3, e1, e0, tmp0, p, 0x6ED9EBA1); /* Rounds 24–27 */ + R(msg1, msg2, msg3, msg0, e0, e1, tmp1, p, 0x6ED9EBA1); /* Rounds 28–31 */ + R(msg2, msg3, msg0, msg1, e1, e0, tmp0, p, 0x8F1BBCDC); /* Rounds 32–35 */ + R(msg3, msg0, msg1, msg2, e0, e1, tmp1, p, 0x8F1BBCDC); /* Rounds 36–39 */ + R(msg0, msg1, msg2, msg3, e1, e0, tmp0, m, 0x8F1BBCDC); /* Rounds 40–43 */ + R(msg1, msg2, msg3, msg0, e0, e1, tmp1, m, 0x8F1BBCDC); /* Rounds 44–47 */ + R(msg2, msg3, msg0, msg1, e1, e0, tmp0, m, 0x8F1BBCDC); /* Rounds 48–51 */ + R(msg3, msg0, msg1, msg2, e0, e1, tmp1, m, 0xCA62C1D6); /* Rounds 52–55 */ + R(msg0, msg1, msg2, msg3, e1, e0, tmp0, m, 0xCA62C1D6); /* Rounds 56–59 */ + R(msg1, msg2, msg3, msg0, e0, e1, tmp1, p, 0xCA62C1D6); /* Rounds 60–63 */ + R(msg2, msg3, msg0, msg1, e1, e0, tmp0, p, 0xCA62C1D6); /* Rounds 64–67 */ + + /* Rounds 68–71 */ + e0 = vsha1h_u32(vgetq_lane_u32(abcd, 0)); + abcd = vsha1pq_u32(abcd, e1, tmp1); + tmp1 = vaddq_u32(msg3, vdupq_n_u32(0xCA62C1D6)); + msg0 = vsha1su1q_u32(msg0, msg3); + + /* Rounds 72–75 */ + e1 = vsha1h_u32(vgetq_lane_u32(abcd, 0)); + abcd = vsha1pq_u32(abcd, e0, tmp0); + + /* Rounds 76–79 */ + e0 = vsha1h_u32(vgetq_lane_u32(abcd, 0)); + abcd = vsha1pq_u32(abcd, e1, tmp1); + + e0 += e_save; + abcd = vaddq_u32(abcd_save, abcd); + + vst1q_u32(s->dgst, abcd); + s->dgst[4] = e0; +} |