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| author | Niels Möller <nisse@lysator.liu.se> | 2008-09-13 21:41:04 +0200 |
|---|---|---|
| committer | Niels Möller <nisse@lysator.liu.se> | 2008-09-13 21:41:04 +0200 |
| commit | 075afd79e451ec55b7d4db99356a7e36871ce56d (patch) | |
| tree | 53708b26a91bde557ce864fb5b39fec984560ca5 /x86 | |
| parent | b60efb20fb823e7c4ce6ee550a3c4765674f3852 (diff) | |
| download | nettle-075afd79e451ec55b7d4db99356a7e36871ce56d.tar.gz | |
* x86/aes.m4 (AES_FINAL_ROUND): Do the substitution on the least
significant byte here.
Rev: nettle/x86/aes.m4:1.5
Diffstat (limited to 'x86')
| -rw-r--r-- | x86/aes.m4 | 28 |
1 files changed, 14 insertions, 14 deletions
@@ -59,22 +59,22 @@ define(<AES_ROUND>, < shrl <$>24,$7 xorl AES_TABLE3 ($1, $7, 4),$6>)dnl -dnl AES_FINAL_ROUND(a, b, c, d, out, tmp) -dnl Computes one word of the final round. Leaves result in %edi. +dnl AES_FINAL_ROUND(a, b, c, d, table, out, tmp) +dnl Computes one word of the final round. dnl Note that we have to quote $ in constants. define(<AES_FINAL_ROUND>, < - C FIXME: Perform substitution on least significant byte here, - C to save work later. - movzbl LREG($1),$5 - movl $2,$6 - andl <$>0x0000ff00,$6 - orl $6, $5 - movl $3,$6 - andl <$>0x00ff0000,$6 - orl $6, $5 - movl $4,$6 - andl <$>0xff000000,$6 - orl $6, $5>)dnl + movzbl LREG($1),$6 + movzbl ($5, $6), $6 + movl $2,$7 + andl <$>0x0000ff00,$7 + orl $7, $6 + movl $3,$7 + andl <$>0x00ff0000,$7 + orl $7, $6 + movl $4,$7 + andl <$>0xff000000,$7 + orl $7, $6 + roll <$>8, $6>)dnl dnl AES_SUBST_BYTE(A, B, C, D, table, ptr) dnl Substitutes the least significant byte of |