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avr-crypto-lib
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bg 2009-01-14 19:16:36 +00:00
parent 398d051849
commit 6805745010
1 changed files with 48 additions and 72 deletions
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120
aes_enc-asm.S
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@ -185,28 +185,25 @@ aes_encrypt_core:
brtc 2f
rjmp 1b
2:
mov r1, ST00
eor r1, ST01
eor r1, ST02
/* mixrow 1*/
mov r1, ST02
eor r1, ST03
mov T0, ST00
eor T0, ST01
lsl T0
eor ST00, ST01
eor r1, ST00
lsl ST00
brcc 3f
eor T0, xREDUCER
3:
eor T0, r1
eor T0, ST00
eor ST00, xREDUCER
3: eor ST00, r1
eor ST00, T0
mov T1, ST01
eor T1, ST02
lsl T1
brcc 3f
eor T1, xREDUCER
3:
eor T1, r1
3: eor T1, r1
eor ST01, T1
mov T2, ST02
@ -214,42 +211,36 @@ aes_encrypt_core:
lsl T2
brcc 3f
eor T2, xREDUCER
3:
eor T2, r1
3: eor T2, r1
eor ST02, T2
mov T3, ST03
eor T3, ST00
eor T3, T0
lsl T3
brcc 3f
eor T3, xREDUCER
3:
eor T3, r1
3: eor T3, r1
eor ST03, T3
mov ST00, T0
mov r1, ST10
eor r1, ST11
eor r1, ST12
/* mixrow 2 */
mov r1, ST12
eor r1, ST13
mov T0, ST10
eor T0, ST11
lsl T0
eor ST10, ST11
eor r1, ST10
lsl ST10
brcc 3f
eor T0, xREDUCER
3:
eor T0, r1
eor T0, ST10
eor ST10, xREDUCER
3: eor ST10, r1
eor ST10, T0
mov T1, ST11
eor T1, ST12
lsl T1
brcc 3f
eor T1, xREDUCER
3:
eor T1, r1
3: eor T1, r1
eor ST11, T1
mov T2, ST12
@ -257,42 +248,36 @@ aes_encrypt_core:
lsl T2
brcc 3f
eor T2, xREDUCER
3:
eor T2, r1
3: eor T2, r1
eor ST12, T2
mov T3, ST13
eor T3, ST10
eor T3, T0
lsl T3
brcc 3f
eor T3, xREDUCER
3:
eor T3, r1
3: eor T3, r1
eor ST13, T3
mov ST10, T0
mov r1, ST20
eor r1, ST21
eor r1, ST22
/* mixrow 3*/
mov r1, ST22
eor r1, ST23
mov T0, ST20
eor T0, ST21
lsl T0
eor ST20, ST21
eor r1, ST20
lsl ST20
brcc 3f
eor T0, xREDUCER
3:
eor T0, r1
eor T0, ST20
eor ST20, xREDUCER
3: eor ST20, r1
eor ST20, T0
mov T1, ST21
eor T1, ST22
lsl T1
brcc 3f
eor T1, xREDUCER
3:
eor T1, r1
3: eor T1, r1
eor ST21, T1
mov T2, ST22
@ -300,42 +285,36 @@ aes_encrypt_core:
lsl T2
brcc 3f
eor T2, xREDUCER
3:
eor T2, r1
3: eor T2, r1
eor ST22, T2
mov T3, ST23
eor T3, ST20
eor T3, T0
lsl T3
brcc 3f
eor T3, xREDUCER
3:
eor T3, r1
3: eor T3, r1
eor ST23, T3
mov ST20, T0
mov r1, ST30
eor r1, ST31
eor r1, ST32
/* mixrow 4 */
mov r1, ST32
eor r1, ST33
mov T0, ST30
eor T0, ST31
lsl T0
eor ST30, ST31
eor r1, ST30
lsl ST30
brcc 3f
eor T0, xREDUCER
3:
eor T0, r1
eor T0, ST30
eor ST30, xREDUCER
3: eor ST30, r1
eor ST30, T0
mov T1, ST31
eor T1, ST32
lsl T1
brcc 3f
eor T1, xREDUCER
3:
eor T1, r1
3: eor T1, r1
eor ST31, T1
mov T2, ST32
@ -343,20 +322,17 @@ aes_encrypt_core:
lsl T2
brcc 3f
eor T2, xREDUCER
3:
eor T2, r1
3: eor T2, r1
eor ST32, T2
mov T3, ST33
eor T3, ST30
eor T3, T0
lsl T3
brcc 3f
eor T3, xREDUCER
3:
eor T3, r1
3: eor T3, r1
eor ST33, T3
mov ST30, T0
/* mix colums (rows) done */