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Commit f33d270a by Alexandre Adomnicai Committed by Enrico Pozzobon
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giftcofb128v1.armcortexm

parent 341e6ca6
Inline Side-by-side
Showing with 17 additions and 3 deletions
gift-cofb/Implementations/crypto_aead/giftcofb128v1/armcortexm_compact/giftb128.s
...@@ -61,7 +61,6 @@ key_update: ...@@ -61,7 +61,6 @@ key_update:
strd r6, r4, [r1], #8 //store rkeys after 4th key update strd r6, r4, [r1], #8 //store rkeys after 4th key update
bx lr bx lr
.align 2 .align 2
rearrange_rkey_0: rearrange_rkey_0:
ldrd r6, r4, [r1] ldrd r6, r4, [r1]
...@@ -246,8 +245,23 @@ gift128_keyschedule: ...@@ -246,8 +245,23 @@ gift128_keyschedule:
bl key_update bl key_update
bl key_update bl key_update
bl key_update bl key_update
bl key_update and r2, r10, r7, lsr #12
sub.w r1, r1, #336 and r3, r7, r9
orr r2, r2, r3, lsl #4
and r3, r12, r7, lsr #2
orr r2, r2, r3
and r7, r7, #0x00030000
orr r7, r2, r7, lsl #14
strd r5, r7, [r1], #8 //penultimate key update
and r2, r10, r6, lsr #12
and r3, r6, r9
orr r2, r2, r3, lsl #4
and r3, r12, r6, lsr #2
orr r2, r2, r3
and r6, r6, #0x00030000
orr r6, r2, r6, lsl #14
strd r4, r6, [r1], #8 //ultimate key update
sub.w r1, r1, #320
// rearrange the rkeys to their respective new representations // rearrange the rkeys to their respective new representations
movw r3, #0x0055 movw r3, #0x0055
movt r3, #0x0055 //r3 <- 0x00550055 movt r3, #0x0055 //r3 <- 0x00550055
......
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