Commit 080b5d93 authored by Niels Möller's avatar Niels Möller
Browse files

(AES_FINAL_ROUND): Don't update dst, just access it offseted by i.

(_aes_crypt): Add 16 to dst at the end of the final round.

Rev: src/nettle/sparc/aes.asm:1.101
parent d7ae45d0
......@@ -102,11 +102,11 @@ define(<AES_ROUND>, <
xor t0, t3, t0 ! 0, 1, 2, 3
xor t0, t1, t0
st t0, [tmp + $1]>)
st t0, [tmp + $1]>)dnl
C AES_FINAL_ROUND(i)
C Compute one word in the final round function.
C Input in wtxt, output stored in tmp + i.
C Input in wtxt, output converted to an octet string and stored at dst.
C
C The comments mark which j in T->table[j][ Bj(wtxt[IDXi(i)]) ]
C the instruction is a part of.
......@@ -141,12 +141,11 @@ define(<AES_FINAL_ROUND>, <
srl t0, 24, t3
srl t0, 16, t2
srl t0, 8, t1
stb t1, [dst++1]
stb t1, [dst+$1+1]
stb t3, [dst+3]
stb t2, [dst+2]
stb t0, [dst]
add dst, 4, dst>)
stb t3, [dst+$1+3]
stb t2, [dst+$1+2]
stb t0, [dst+$1]>)dnl
C The stack frame looks like
C
......@@ -235,13 +234,14 @@ _aes_crypt:
bne .Lround_loop
add key, 16, key
C Final round
C Final round, and storage of the output
AES_FINAL_ROUND(0) ! i = 0
AES_FINAL_ROUND(4) ! i = 1
AES_FINAL_ROUND(8) ! i = 2
AES_FINAL_ROUND(12) ! i = 3
add dst, 16, dst
addcc length, -16, length
sub ctx, src, %g2
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment