Mailing List Archive

* cipher/sm4.c (_gcry_sm4_ocb_crypt) [USE_GFNI_AVX512]: Add 16-way
GFNI-AVX512 handling.
--

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
---
cipher/sm4.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)

diff --git a/cipher/sm4.c b/cipher/sm4.c
index 0e89be78..b0402b64 100644
--- a/cipher/sm4.c
+++ b/cipher/sm4.c
@@ -1663,6 +1663,26 @@ _gcry_sm4_ocb_crypt (gcry_cipher_hd_t c, void *outbuf_arg,
inbuf += 32 * 16;
}
}
+
+ if (nblocks >= 16)
+ {
+ l = bulk_ocb_prepare_L_pointers_array_blk16 (c, Ls, blkn);
+
+ /* Process data in 16 block chunks. */
+ blkn += 16;
+ *l = (uintptr_t)(void *)ocb_get_l(c, blkn - blkn % 16);
+
+ if (encrypt)
+ _gcry_sm4_gfni_avx512_ocb_enc(ctx->rkey_enc, outbuf, inbuf,
+ c->u_iv.iv, c->u_ctr.ctr, Ls);
+ else
+ _gcry_sm4_gfni_avx512_ocb_dec(ctx->rkey_dec, outbuf, inbuf,
+ c->u_iv.iv, c->u_ctr.ctr, Ls);
+
+ nblocks -= 16;
+ outbuf += 16 * 16;
+ inbuf += 16 * 16;
+ }
}
#endif

--
2.37.2


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