From fcfbeedf79adc7abaea35b0f88ec23cf546d3b77 Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Fri, 29 Dec 2017 10:10:24 -0600 Subject: crypto: poly1305 - use unaligned access macros to output digest Currently the only part of poly1305-generic which is assuming special alignment is the part where the final digest is written. Switch this over to the unaligned access macros so that we'll be able to remove the cra_alignmask. Signed-off-by: Eric Biggers Signed-off-by: Herbert Xu --- crypto/poly1305_generic.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/crypto/poly1305_generic.c b/crypto/poly1305_generic.c index b1c2d57dc734..d752901ba0bc 100644 --- a/crypto/poly1305_generic.c +++ b/crypto/poly1305_generic.c @@ -210,7 +210,6 @@ EXPORT_SYMBOL_GPL(crypto_poly1305_update); int crypto_poly1305_final(struct shash_desc *desc, u8 *dst) { struct poly1305_desc_ctx *dctx = shash_desc_ctx(desc); - __le32 *mac = (__le32 *)dst; u32 h0, h1, h2, h3, h4; u32 g0, g1, g2, g3, g4; u32 mask; @@ -267,10 +266,10 @@ int crypto_poly1305_final(struct shash_desc *desc, u8 *dst) h3 = (h3 >> 18) | (h4 << 8); /* mac = (h + s) % (2^128) */ - f = (f >> 32) + h0 + dctx->s[0]; mac[0] = cpu_to_le32(f); - f = (f >> 32) + h1 + dctx->s[1]; mac[1] = cpu_to_le32(f); - f = (f >> 32) + h2 + dctx->s[2]; mac[2] = cpu_to_le32(f); - f = (f >> 32) + h3 + dctx->s[3]; mac[3] = cpu_to_le32(f); + f = (f >> 32) + h0 + dctx->s[0]; put_unaligned_le32(f, dst + 0); + f = (f >> 32) + h1 + dctx->s[1]; put_unaligned_le32(f, dst + 4); + f = (f >> 32) + h2 + dctx->s[2]; put_unaligned_le32(f, dst + 8); + f = (f >> 32) + h3 + dctx->s[3]; put_unaligned_le32(f, dst + 12); return 0; } -- cgit v1.2.3