[keccak-asm] applying quick-fix

[avr-crypto-lib.git] / keccak / keccak-asm.S

diff --git a/keccak/keccak-asm.S b/keccak/keccak-asm.S
index db8548cb4f44383a9caced05b95c32198d43860f..f82063b077e1cb54c904d43201bb646671822f24 100644 (file)
--- a/keccak/keccak-asm.S
+++ b/keccak/keccak-asm.S
@@ -842,14 +842,14 @@ keccak_lastBlock:
        movw r24, ctx_l
        movw r22, r4
        rcall keccak_nextBlock
-       sub r4, pbs
-       sbc r5, __zero_reg__
+       add r4, pbs
+       adc r5, __zero_reg__
        sub length_b_l, pr_l
-       sbc length_b_l, pr_h
+       sbc length_b_h, pr_h
        rjmp 10b
 20:
-       movw XL, r4
        movw ZL, ctx_l
+       movw XL, r4
        movw r22, length_b_l
        lsr r23
        ror r22
@@ -867,12 +867,12 @@ keccak_lastBlock:
        dec r23
        brne 10b
 20:
+       ldi r25, 1
        mov r18, length_b_l
        andi r18, 7
-       mov r19, r18
-       ldi r25, 1
        breq 30f
        /* we have trailing bits */
+       mov r19, r18
        ld r24, X+
        subi r18, 8
        neg r18