3 # ====================================================================
4 # Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
5 # project. The module is, however, dual licensed under OpenSSL and
6 # CRYPTOGAMS licenses depending on where you obtain it. For further
7 # details see http://www.openssl.org/~appro/cryptogams/.
8 # ====================================================================
14 # Code uses single 1K S-box and is >2 times faster than code generated
15 # by gcc-3.4.1. This is thanks to unique feature of ARMv4 ISA, which
16 # allows to merge logical or arithmetic operation with shift or rotate
17 # in one instruction and emit combined result every cycle. The module
18 # is endian-neutral. The performance is ~42 cycles/byte for 128-bit
23 # AES_set_[en|de]crypt_key is added.
47 .word 0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d
48 .word 0xfff2f20d, 0xd66b6bbd, 0xde6f6fb1, 0x91c5c554
49 .word 0x60303050, 0x02010103, 0xce6767a9, 0x562b2b7d
50 .word 0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a
51 .word 0x8fcaca45, 0x1f82829d, 0x89c9c940, 0xfa7d7d87
52 .word 0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b
53 .word 0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea
54 .word 0x239c9cbf, 0x53a4a4f7, 0xe4727296, 0x9bc0c05b
55 .word 0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a
56 .word 0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f
57 .word 0x6834345c, 0x51a5a5f4, 0xd1e5e534, 0xf9f1f108
58 .word 0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f
59 .word 0x0804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e
60 .word 0x30181828, 0x379696a1, 0x0a05050f, 0x2f9a9ab5
61 .word 0x0e070709, 0x24121236, 0x1b80809b, 0xdfe2e23d
62 .word 0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f
63 .word 0x1209091b, 0x1d83839e, 0x582c2c74, 0x341a1a2e
64 .word 0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb
65 .word 0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce
66 .word 0x5229297b, 0xdde3e33e, 0x5e2f2f71, 0x13848497
67 .word 0xa65353f5, 0xb9d1d168, 0x00000000, 0xc1eded2c
68 .word 0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed
69 .word 0xd46a6abe, 0x8dcbcb46, 0x67bebed9, 0x7239394b
70 .word 0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a
71 .word 0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16
72 .word 0x864343c5, 0x9a4d4dd7, 0x66333355, 0x11858594
73 .word 0x8a4545cf, 0xe9f9f910, 0x04020206, 0xfe7f7f81
74 .word 0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3
75 .word 0xa25151f3, 0x5da3a3fe, 0x804040c0, 0x058f8f8a
76 .word 0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504
77 .word 0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163
78 .word 0x20101030, 0xe5ffff1a, 0xfdf3f30e, 0xbfd2d26d
79 .word 0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f
80 .word 0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739
81 .word 0x93c4c457, 0x55a7a7f2, 0xfc7e7e82, 0x7a3d3d47
82 .word 0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395
83 .word 0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f
84 .word 0x44222266, 0x542a2a7e, 0x3b9090ab, 0x0b888883
85 .word 0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c
86 .word 0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76
87 .word 0xdbe0e03b, 0x64323256, 0x743a3a4e, 0x140a0a1e
88 .word 0x924949db, 0x0c06060a, 0x4824246c, 0xb85c5ce4
89 .word 0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6
90 .word 0x399191a8, 0x319595a4, 0xd3e4e437, 0xf279798b
91 .word 0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7
92 .word 0x018d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0
93 .word 0xd86c6cb4, 0xac5656fa, 0xf3f4f407, 0xcfeaea25
94 .word 0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818
95 .word 0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72
96 .word 0x381c1c24, 0x57a6a6f1, 0x73b4b4c7, 0x97c6c651
97 .word 0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21
98 .word 0x964b4bdd, 0x61bdbddc, 0x0d8b8b86, 0x0f8a8a85
99 .word 0xe0707090, 0x7c3e3e42, 0x71b5b5c4, 0xcc6666aa
100 .word 0x904848d8, 0x06030305, 0xf7f6f601, 0x1c0e0e12
101 .word 0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0
102 .word 0x17868691, 0x99c1c158, 0x3a1d1d27, 0x279e9eb9
103 .word 0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133
104 .word 0xd26969bb, 0xa9d9d970, 0x078e8e89, 0x339494a7
105 .word 0x2d9b9bb6, 0x3c1e1e22, 0x15878792, 0xc9e9e920
106 .word 0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a
107 .word 0x038c8c8f, 0x59a1a1f8, 0x09898980, 0x1a0d0d17
108 .word 0x65bfbfda, 0xd7e6e631, 0x844242c6, 0xd06868b8
109 .word 0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11
110 .word 0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a
112 .byte 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5
113 .byte 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76
114 .byte 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0
115 .byte 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0
116 .byte 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc
117 .byte 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15
118 .byte 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a
119 .byte 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75
120 .byte 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0
121 .byte 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84
122 .byte 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b
123 .byte 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf
124 .byte 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85
125 .byte 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8
126 .byte 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5
127 .byte 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2
128 .byte 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17
129 .byte 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73
130 .byte 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88
131 .byte 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb
132 .byte 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c
133 .byte 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79
134 .byte 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9
135 .byte 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08
136 .byte 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6
137 .byte 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a
138 .byte 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e
139 .byte 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e
140 .byte 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94
141 .byte 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf
142 .byte 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68
143 .byte 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
145 .word 0x01000000, 0x02000000, 0x04000000, 0x08000000
146 .word 0x10000000, 0x20000000, 0x40000000, 0x80000000
147 .word 0x1B000000, 0x36000000, 0, 0, 0, 0, 0, 0
148 .size AES_Te,.-AES_Te
150 @ void AES_encrypt(const unsigned char *in, unsigned char *out,
151 @ const AES_KEY *key) {
153 .type AES_encrypt,%function
156 sub r3,pc,#8 @ AES_encrypt
157 stmdb sp!,{r1,r4-r12,lr}
160 sub $tbl,r3,#AES_encrypt-AES_Te @ Te
162 ldrb $s0,[$rounds,#3] @ load input data in endian-neutral
163 ldrb $t1,[$rounds,#2] @ manner...
164 ldrb $t2,[$rounds,#1]
165 ldrb $t3,[$rounds,#0]
166 orr $s0,$s0,$t1,lsl#8
167 orr $s0,$s0,$t2,lsl#16
168 orr $s0,$s0,$t3,lsl#24
169 ldrb $s1,[$rounds,#7]
170 ldrb $t1,[$rounds,#6]
171 ldrb $t2,[$rounds,#5]
172 ldrb $t3,[$rounds,#4]
173 orr $s1,$s1,$t1,lsl#8
174 orr $s1,$s1,$t2,lsl#16
175 orr $s1,$s1,$t3,lsl#24
176 ldrb $s2,[$rounds,#11]
177 ldrb $t1,[$rounds,#10]
178 ldrb $t2,[$rounds,#9]
179 ldrb $t3,[$rounds,#8]
180 orr $s2,$s2,$t1,lsl#8
181 orr $s2,$s2,$t2,lsl#16
182 orr $s2,$s2,$t3,lsl#24
183 ldrb $s3,[$rounds,#15]
184 ldrb $t1,[$rounds,#14]
185 ldrb $t2,[$rounds,#13]
186 ldrb $t3,[$rounds,#12]
187 orr $s3,$s3,$t1,lsl#8
188 orr $s3,$s3,$t2,lsl#16
189 orr $s3,$s3,$t3,lsl#24
191 bl _armv4_AES_encrypt
193 ldr $rounds,[sp],#4 @ pop out
194 mov $t1,$s0,lsr#24 @ write output in endian-neutral
195 mov $t2,$s0,lsr#16 @ manner...
197 strb $t1,[$rounds,#0]
198 strb $t2,[$rounds,#1]
199 strb $t3,[$rounds,#2]
200 strb $s0,[$rounds,#3]
204 strb $t1,[$rounds,#4]
205 strb $t2,[$rounds,#5]
206 strb $t3,[$rounds,#6]
207 strb $s1,[$rounds,#7]
211 strb $t1,[$rounds,#8]
212 strb $t2,[$rounds,#9]
213 strb $t3,[$rounds,#10]
214 strb $s2,[$rounds,#11]
218 strb $t1,[$rounds,#12]
219 strb $t2,[$rounds,#13]
220 strb $t3,[$rounds,#14]
221 strb $s3,[$rounds,#15]
223 ldmia sp!,{r4-r12,lr}
225 moveq pc,lr @ be binary compatible with V4, yet
226 bx lr @ interoperable with Thumb ISA:-)
227 .size AES_encrypt,.-AES_encrypt
229 .type _armv4_AES_encrypt,%function
232 str lr,[sp,#-4]! @ push lr
237 ldr $rounds,[$key,#240-16]
242 sub $rounds,$rounds,#1
247 and $i3,lr,$s0,lsr#16
250 ldr $t1,[$tbl,$i1,lsl#2] @ Te3[s0>>0]
251 ldr $s0,[$tbl,$s0,lsl#2] @ Te0[s0>>24]
252 ldr $t2,[$tbl,$i2,lsl#2] @ Te2[s0>>8]
253 ldr $t3,[$tbl,$i3,lsl#2] @ Te1[s0>>16]
255 and $i1,lr,$s1,lsr#16 @ i0
259 ldr $i1,[$tbl,$i1,lsl#2] @ Te1[s1>>16]
260 ldr $s1,[$tbl,$s1,lsl#2] @ Te0[s1>>24]
261 ldr $i2,[$tbl,$i2,lsl#2] @ Te3[s1>>0]
262 ldr $i3,[$tbl,$i3,lsl#2] @ Te2[s1>>8]
263 eor $s0,$s0,$i1,ror#8
264 eor $s1,$s1,$t1,ror#24
265 eor $t2,$t2,$i2,ror#8
266 eor $t3,$t3,$i3,ror#8
268 and $i1,lr,$s2,lsr#8 @ i0
269 and $i2,lr,$s2,lsr#16 @ i1
272 ldr $i1,[$tbl,$i1,lsl#2] @ Te2[s2>>8]
273 ldr $i2,[$tbl,$i2,lsl#2] @ Te1[s2>>16]
274 ldr $s2,[$tbl,$s2,lsl#2] @ Te0[s2>>24]
275 ldr $i3,[$tbl,$i3,lsl#2] @ Te3[s2>>0]
276 eor $s0,$s0,$i1,ror#16
277 eor $s1,$s1,$i2,ror#8
278 eor $s2,$s2,$t2,ror#16
279 eor $t3,$t3,$i3,ror#16
282 and $i2,lr,$s3,lsr#8 @ i1
283 and $i3,lr,$s3,lsr#16 @ i2
285 ldr $i1,[$tbl,$i1,lsl#2] @ Te3[s3>>0]
286 ldr $i2,[$tbl,$i2,lsl#2] @ Te2[s3>>8]
287 ldr $i3,[$tbl,$i3,lsl#2] @ Te1[s3>>16]
288 ldr $s3,[$tbl,$s3,lsl#2] @ Te0[s3>>24]
289 eor $s0,$s0,$i1,ror#24
290 eor $s1,$s1,$i2,ror#16
291 eor $s2,$s2,$i3,ror#8
292 eor $s3,$s3,$t3,ror#8
303 subs $rounds,$rounds,#1
310 and $i3,lr,$s0,lsr#16
312 ldrb $t1,[$tbl,$i1,lsl#2] @ Te4[s0>>0]
313 ldrb $s0,[$tbl,$s0,lsl#2] @ Te4[s0>>24]
314 ldrb $t2,[$tbl,$i2,lsl#2] @ Te4[s0>>8]
315 ldrb $t3,[$tbl,$i3,lsl#2] @ Te4[s0>>16]
317 and $i1,lr,$s1,lsr#16 @ i0
321 ldrb $i1,[$tbl,$i1,lsl#2] @ Te4[s1>>16]
322 ldrb $s1,[$tbl,$s1,lsl#2] @ Te4[s1>>24]
323 ldrb $i2,[$tbl,$i2,lsl#2] @ Te4[s1>>0]
324 ldrb $i3,[$tbl,$i3,lsl#2] @ Te4[s1>>8]
325 eor $s0,$i1,$s0,lsl#8
326 eor $s1,$t1,$s1,lsl#24
327 eor $t2,$i2,$t2,lsl#8
328 eor $t3,$i3,$t3,lsl#8
330 and $i1,lr,$s2,lsr#8 @ i0
331 and $i2,lr,$s2,lsr#16 @ i1
334 ldrb $i1,[$tbl,$i1,lsl#2] @ Te4[s2>>8]
335 ldrb $i2,[$tbl,$i2,lsl#2] @ Te4[s2>>16]
336 ldrb $s2,[$tbl,$s2,lsl#2] @ Te4[s2>>24]
337 ldrb $i3,[$tbl,$i3,lsl#2] @ Te4[s2>>0]
338 eor $s0,$i1,$s0,lsl#8
339 eor $s1,$s1,$i2,lsl#16
340 eor $s2,$t2,$s2,lsl#24
341 eor $t3,$i3,$t3,lsl#8
344 and $i2,lr,$s3,lsr#8 @ i1
345 and $i3,lr,$s3,lsr#16 @ i2
347 ldrb $i1,[$tbl,$i1,lsl#2] @ Te4[s3>>0]
348 ldrb $i2,[$tbl,$i2,lsl#2] @ Te4[s3>>8]
349 ldrb $i3,[$tbl,$i3,lsl#2] @ Te4[s3>>16]
350 ldrb $s3,[$tbl,$s3,lsl#2] @ Te4[s3>>24]
351 eor $s0,$i1,$s0,lsl#8
352 eor $s1,$s1,$i2,lsl#8
353 eor $s2,$s2,$i3,lsl#16
354 eor $s3,$t3,$s3,lsl#24
356 ldr lr,[sp],#4 @ pop lr
368 .size _armv4_AES_encrypt,.-_armv4_AES_encrypt
370 .global AES_set_encrypt_key
371 .type AES_set_encrypt_key,%function
374 sub r3,pc,#8 @ AES_set_encrypt_key
390 .Lok: stmdb sp!,{r4-r12,lr}
391 sub $tbl,r3,#AES_set_encrypt_key-AES_Te-1024 @ Te4
397 ldrb $s0,[$rounds,#3] @ load input data in endian-neutral
398 ldrb $t1,[$rounds,#2] @ manner...
399 ldrb $t2,[$rounds,#1]
400 ldrb $t3,[$rounds,#0]
401 orr $s0,$s0,$t1,lsl#8
402 orr $s0,$s0,$t2,lsl#16
403 orr $s0,$s0,$t3,lsl#24
404 ldrb $s1,[$rounds,#7]
405 ldrb $t1,[$rounds,#6]
406 ldrb $t2,[$rounds,#5]
407 ldrb $t3,[$rounds,#4]
408 orr $s1,$s1,$t1,lsl#8
409 orr $s1,$s1,$t2,lsl#16
410 orr $s1,$s1,$t3,lsl#24
411 ldrb $s2,[$rounds,#11]
412 ldrb $t1,[$rounds,#10]
413 ldrb $t2,[$rounds,#9]
414 ldrb $t3,[$rounds,#8]
415 orr $s2,$s2,$t1,lsl#8
416 orr $s2,$s2,$t2,lsl#16
417 orr $s2,$s2,$t3,lsl#24
418 ldrb $s3,[$rounds,#15]
419 ldrb $t1,[$rounds,#14]
420 ldrb $t2,[$rounds,#13]
421 ldrb $t3,[$rounds,#12]
422 orr $s3,$s3,$t1,lsl#8
423 orr $s3,$s3,$t2,lsl#16
424 orr $s3,$s3,$t3,lsl#24
433 str $rounds,[$key,#240-16]
434 add $t3,$tbl,#256 @ rcon
438 and $t2,lr,$s3,lsr#24
439 and $i1,lr,$s3,lsr#16
446 ldr $t1,[$t3],#4 @ rcon[i++]
447 orr $t2,$t2,$i1,lsl#24
448 orr $t2,$t2,$i2,lsl#16
449 orr $t2,$t2,$i3,lsl#8
451 eor $s0,$s0,$t2 @ rk[4]=rk[0]^...
452 eor $s1,$s1,$s0 @ rk[5]=rk[1]^rk[4]
453 eor $s2,$s2,$s1 @ rk[6]=rk[2]^rk[5]
454 eor $s3,$s3,$s2 @ rk[7]=rk[3]^rk[6]
460 subs $rounds,$rounds,#1
466 ldrb $i2,[$rounds,#19]
467 ldrb $t1,[$rounds,#18]
468 ldrb $t2,[$rounds,#17]
469 ldrb $t3,[$rounds,#16]
470 orr $i2,$i2,$t1,lsl#8
471 orr $i2,$i2,$t2,lsl#16
472 orr $i2,$i2,$t3,lsl#24
473 ldrb $i3,[$rounds,#23]
474 ldrb $t1,[$rounds,#22]
475 ldrb $t2,[$rounds,#21]
476 ldrb $t3,[$rounds,#20]
477 orr $i3,$i3,$t1,lsl#8
478 orr $i3,$i3,$t2,lsl#16
479 orr $i3,$i3,$t3,lsl#24
486 str $rounds,[$key,#240-24]
487 add $t3,$tbl,#256 @ rcon
492 and $t2,lr,$i3,lsr#24
493 and $i1,lr,$i3,lsr#16
500 ldr $t1,[$t3],#4 @ rcon[i++]
501 orr $t2,$t2,$i1,lsl#24
502 orr $t2,$t2,$i2,lsl#16
503 orr $t2,$t2,$i3,lsl#8
505 eor $s0,$s0,$i3 @ rk[6]=rk[0]^...
506 eor $s1,$s1,$s0 @ rk[7]=rk[1]^rk[6]
507 eor $s2,$s2,$s1 @ rk[8]=rk[2]^rk[7]
508 eor $s3,$s3,$s2 @ rk[9]=rk[3]^rk[8]
514 subs $rounds,$rounds,#1
520 eor $i1,$i1,$s3 @ rk[10]=rk[4]^rk[9]
521 eor $i3,$i2,$i1 @ rk[11]=rk[5]^rk[10]
527 ldrb $i2,[$rounds,#27]
528 ldrb $t1,[$rounds,#26]
529 ldrb $t2,[$rounds,#25]
530 ldrb $t3,[$rounds,#24]
531 orr $i2,$i2,$t1,lsl#8
532 orr $i2,$i2,$t2,lsl#16
533 orr $i2,$i2,$t3,lsl#24
534 ldrb $i3,[$rounds,#31]
535 ldrb $t1,[$rounds,#30]
536 ldrb $t2,[$rounds,#29]
537 ldrb $t3,[$rounds,#28]
538 orr $i3,$i3,$t1,lsl#8
539 orr $i3,$i3,$t2,lsl#16
540 orr $i3,$i3,$t3,lsl#24
545 str $rounds,[$key,#240-32]
546 add $t3,$tbl,#256 @ rcon
551 and $t2,lr,$i3,lsr#24
552 and $i1,lr,$i3,lsr#16
559 ldr $t1,[$t3],#4 @ rcon[i++]
560 orr $t2,$t2,$i1,lsl#24
561 orr $t2,$t2,$i2,lsl#16
562 orr $t2,$t2,$i3,lsl#8
564 eor $s0,$s0,$i3 @ rk[8]=rk[0]^...
565 eor $s1,$s1,$s0 @ rk[9]=rk[1]^rk[8]
566 eor $s2,$s2,$s1 @ rk[10]=rk[2]^rk[9]
567 eor $s3,$s3,$s2 @ rk[11]=rk[3]^rk[10]
573 subs $rounds,$rounds,#1
579 and $i2,lr,$s3,lsr#16
580 and $i3,lr,$s3,lsr#24
585 orr $t2,$t2,$i1,lsl#8
586 orr $t2,$t2,$i2,lsl#16
587 orr $t2,$t2,$i3,lsl#24
593 eor $t1,$t1,$t2 @ rk[12]=rk[4]^...
594 eor $i1,$i1,$t1 @ rk[13]=rk[5]^rk[12]
595 eor $i2,$i2,$i1 @ rk[14]=rk[6]^rk[13]
596 eor $i3,$i3,$i2 @ rk[15]=rk[7]^rk[14]
604 ldmia sp!,{r4-r12,lr}
606 moveq pc,lr @ be binary compatible with V4, yet
607 bx lr @ interoperable with Thumb ISA:-)
608 .size AES_set_encrypt_key,.-AES_set_encrypt_key
610 .global AES_set_decrypt_key
611 .type AES_set_decrypt_key,%function
614 str lr,[sp,#-4]! @ push lr
615 bl AES_set_encrypt_key
617 ldrne lr,[sp],#4 @ pop lr
622 ldr $rounds,[r2,#240] @ AES_set_encrypt_key preserves r2,
623 mov $key,r2 @ which is AES_KEY *key
625 add $i2,r2,$rounds,lsl#4
650 ldr $s0,[$key,#16]! @ prefetch tp1
653 orr $mask80,$mask80,#0x8000
654 orr $mask1b,$mask1b,#0x1b00
655 orr $mask80,$mask80,$mask80,lsl#16
656 orr $mask1b,$mask1b,$mask1b,lsl#16
657 sub $rounds,$rounds,#1
659 mov $rounds,$rounds,lsl#2 @ (rounds-1)*4
661 .Lmix: and $t1,$s0,$mask80
663 sub $t1,$t1,$t1,lsr#7
665 eor $s1,$t1,$s1,lsl#1 @ tp2
669 sub $t1,$t1,$t1,lsr#7
671 eor $s2,$t1,$s2,lsl#1 @ tp4
675 sub $t1,$t1,$t1,lsr#7
677 eor $s3,$t1,$s3,lsl#1 @ tp8
680 eor $t2,$s0,$s3 @ tp9
681 eor $t1,$t1,$s3 @ tpe
682 eor $t1,$t1,$s1,ror#24
683 eor $t1,$t1,$t2,ror#24 @ ^= ROTATE(tpb=tp9^tp2,8)
684 eor $t1,$t1,$s2,ror#16
685 eor $t1,$t1,$t2,ror#16 @ ^= ROTATE(tpd=tp9^tp4,16)
686 eor $t1,$t1,$t2,ror#8 @ ^= ROTATE(tp9,24)
688 ldr $s0,[$key,#4] @ prefetch tp1
690 subs $rounds,$rounds,#1
694 ldmia sp!,{r4-r12,lr}
696 moveq pc,lr @ be binary compatible with V4, yet
697 bx lr @ interoperable with Thumb ISA:-)
698 .size AES_set_decrypt_key,.-AES_set_decrypt_key
703 .word 0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96
704 .word 0x3bab6bcb, 0x1f9d45f1, 0xacfa58ab, 0x4be30393
705 .word 0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25
706 .word 0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f
707 .word 0xdeb15a49, 0x25ba1b67, 0x45ea0e98, 0x5dfec0e1
708 .word 0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6
709 .word 0x038f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da
710 .word 0xd4be832d, 0x587421d3, 0x49e06929, 0x8ec9c844
711 .word 0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd
712 .word 0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4
713 .word 0x63df4a18, 0xe51a3182, 0x97513360, 0x62537f45
714 .word 0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94
715 .word 0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7
716 .word 0xab73d323, 0x724b02e2, 0xe31f8f57, 0x6655ab2a
717 .word 0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5
718 .word 0x302887f2, 0x23bfa5b2, 0x02036aba, 0xed16825c
719 .word 0x8acf1c2b, 0xa779b492, 0xf307f2f0, 0x4e69e2a1
720 .word 0x65daf4cd, 0x0605bed5, 0xd134621f, 0xc4a6fe8a
721 .word 0x342e539d, 0xa2f355a0, 0x058ae132, 0xa4f6eb75
722 .word 0x0b83ec39, 0x4060efaa, 0x5e719f06, 0xbd6e1051
723 .word 0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46
724 .word 0x91548db5, 0x71c45d05, 0x0406d46f, 0x605015ff
725 .word 0x1998fb24, 0xd6bde997, 0x894043cc, 0x67d99e77
726 .word 0xb0e842bd, 0x07898b88, 0xe7195b38, 0x79c8eedb
727 .word 0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x00000000
728 .word 0x09808683, 0x322bed48, 0x1e1170ac, 0x6c5a724e
729 .word 0xfd0efffb, 0x0f853856, 0x3daed51e, 0x362d3927
730 .word 0x0a0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a
731 .word 0x0c0a67b1, 0x9357e70f, 0xb4ee96d2, 0x1b9b919e
732 .word 0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16
733 .word 0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d
734 .word 0x0e090d0b, 0xf28bc7ad, 0x2db6a8b9, 0x141ea9c8
735 .word 0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd
736 .word 0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34
737 .word 0x8b432976, 0xcb23c6dc, 0xb6edfc68, 0xb8e4f163
738 .word 0xd731dcca, 0x42638510, 0x13972240, 0x84c61120
739 .word 0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d
740 .word 0x1d9e2f4b, 0xdcb230f3, 0x0d8652ec, 0x77c1e3d0
741 .word 0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422
742 .word 0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef
743 .word 0x87494ec7, 0xd938d1c1, 0x8ccaa2fe, 0x98d40b36
744 .word 0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4
745 .word 0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662
746 .word 0xf68d13c2, 0x90d8b8e8, 0x2e39f75e, 0x82c3aff5
747 .word 0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3
748 .word 0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b
749 .word 0xcd267809, 0x6e5918f4, 0xec9ab701, 0x834f9aa8
750 .word 0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6
751 .word 0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6
752 .word 0x31a4b2af, 0x2a3f2331, 0xc6a59430, 0x35a266c0
753 .word 0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815
754 .word 0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f
755 .word 0x764dd68d, 0x43efb04d, 0xccaa4d54, 0xe49604df
756 .word 0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f
757 .word 0x9d5eea04, 0x018c355d, 0xfa877473, 0xfb0b412e
758 .word 0xb3671d5a, 0x92dbd252, 0xe9105633, 0x6dd64713
759 .word 0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89
760 .word 0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c
761 .word 0x9cd2df59, 0x55f2733f, 0x1814ce79, 0x73c737bf
762 .word 0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86
763 .word 0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f
764 .word 0x161dc372, 0xbce2250c, 0x283c498b, 0xff0d9541
765 .word 0x39a80171, 0x080cb3de, 0xd8b4e49c, 0x6456c190
766 .word 0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742
768 .byte 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38
769 .byte 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb
770 .byte 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87
771 .byte 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb
772 .byte 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d
773 .byte 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e
774 .byte 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2
775 .byte 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25
776 .byte 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16
777 .byte 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92
778 .byte 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda
779 .byte 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84
780 .byte 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a
781 .byte 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06
782 .byte 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02
783 .byte 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b
784 .byte 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea
785 .byte 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73
786 .byte 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85
787 .byte 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e
788 .byte 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89
789 .byte 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b
790 .byte 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20
791 .byte 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4
792 .byte 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31
793 .byte 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f
794 .byte 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d
795 .byte 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef
796 .byte 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0
797 .byte 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61
798 .byte 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26
799 .byte 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
800 .size AES_Td,.-AES_Td
802 @ void AES_decrypt(const unsigned char *in, unsigned char *out,
803 @ const AES_KEY *key) {
805 .type AES_decrypt,%function
808 sub r3,pc,#8 @ AES_decrypt
809 stmdb sp!,{r1,r4-r12,lr}
812 sub $tbl,r3,#AES_decrypt-AES_Td @ Td
814 ldrb $s0,[$rounds,#3] @ load input data in endian-neutral
815 ldrb $t1,[$rounds,#2] @ manner...
816 ldrb $t2,[$rounds,#1]
817 ldrb $t3,[$rounds,#0]
818 orr $s0,$s0,$t1,lsl#8
819 orr $s0,$s0,$t2,lsl#16
820 orr $s0,$s0,$t3,lsl#24
821 ldrb $s1,[$rounds,#7]
822 ldrb $t1,[$rounds,#6]
823 ldrb $t2,[$rounds,#5]
824 ldrb $t3,[$rounds,#4]
825 orr $s1,$s1,$t1,lsl#8
826 orr $s1,$s1,$t2,lsl#16
827 orr $s1,$s1,$t3,lsl#24
828 ldrb $s2,[$rounds,#11]
829 ldrb $t1,[$rounds,#10]
830 ldrb $t2,[$rounds,#9]
831 ldrb $t3,[$rounds,#8]
832 orr $s2,$s2,$t1,lsl#8
833 orr $s2,$s2,$t2,lsl#16
834 orr $s2,$s2,$t3,lsl#24
835 ldrb $s3,[$rounds,#15]
836 ldrb $t1,[$rounds,#14]
837 ldrb $t2,[$rounds,#13]
838 ldrb $t3,[$rounds,#12]
839 orr $s3,$s3,$t1,lsl#8
840 orr $s3,$s3,$t2,lsl#16
841 orr $s3,$s3,$t3,lsl#24
843 bl _armv4_AES_decrypt
845 ldr $rounds,[sp],#4 @ pop out
846 mov $t1,$s0,lsr#24 @ write output in endian-neutral
847 mov $t2,$s0,lsr#16 @ manner...
849 strb $t1,[$rounds,#0]
850 strb $t2,[$rounds,#1]
851 strb $t3,[$rounds,#2]
852 strb $s0,[$rounds,#3]
856 strb $t1,[$rounds,#4]
857 strb $t2,[$rounds,#5]
858 strb $t3,[$rounds,#6]
859 strb $s1,[$rounds,#7]
863 strb $t1,[$rounds,#8]
864 strb $t2,[$rounds,#9]
865 strb $t3,[$rounds,#10]
866 strb $s2,[$rounds,#11]
870 strb $t1,[$rounds,#12]
871 strb $t2,[$rounds,#13]
872 strb $t3,[$rounds,#14]
873 strb $s3,[$rounds,#15]
875 ldmia sp!,{r4-r12,lr}
877 moveq pc,lr @ be binary compatible with V4, yet
878 bx lr @ interoperable with Thumb ISA:-)
879 .size AES_decrypt,.-AES_decrypt
881 .type _armv4_AES_decrypt,%function
884 str lr,[sp,#-4]! @ push lr
889 ldr $rounds,[$key,#240-16]
894 sub $rounds,$rounds,#1
898 and $i1,lr,$s0,lsr#16
902 ldr $t1,[$tbl,$i1,lsl#2] @ Td1[s0>>16]
903 ldr $s0,[$tbl,$s0,lsl#2] @ Td0[s0>>24]
904 ldr $t2,[$tbl,$i2,lsl#2] @ Td2[s0>>8]
905 ldr $t3,[$tbl,$i3,lsl#2] @ Td3[s0>>0]
908 and $i2,lr,$s1,lsr#16
911 ldr $i1,[$tbl,$i1,lsl#2] @ Td3[s1>>0]
912 ldr $s1,[$tbl,$s1,lsl#2] @ Td0[s1>>24]
913 ldr $i2,[$tbl,$i2,lsl#2] @ Td1[s1>>16]
914 ldr $i3,[$tbl,$i3,lsl#2] @ Td2[s1>>8]
915 eor $s0,$s0,$i1,ror#24
916 eor $s1,$s1,$t1,ror#8
917 eor $t2,$i2,$t2,ror#8
918 eor $t3,$i3,$t3,ror#8
920 and $i1,lr,$s2,lsr#8 @ i0
922 and $i3,lr,$s2,lsr#16
924 ldr $i1,[$tbl,$i1,lsl#2] @ Td2[s2>>8]
925 ldr $i2,[$tbl,$i2,lsl#2] @ Td3[s2>>0]
926 ldr $s2,[$tbl,$s2,lsl#2] @ Td0[s2>>24]
927 ldr $i3,[$tbl,$i3,lsl#2] @ Td1[s2>>16]
928 eor $s0,$s0,$i1,ror#16
929 eor $s1,$s1,$i2,ror#24
930 eor $s2,$s2,$t2,ror#8
931 eor $t3,$i3,$t3,ror#8
933 and $i1,lr,$s3,lsr#16 @ i0
934 and $i2,lr,$s3,lsr#8 @ i1
937 ldr $i1,[$tbl,$i1,lsl#2] @ Td1[s3>>16]
938 ldr $i2,[$tbl,$i2,lsl#2] @ Td2[s3>>8]
939 ldr $i3,[$tbl,$i3,lsl#2] @ Td3[s3>>0]
940 ldr $s3,[$tbl,$s3,lsl#2] @ Td0[s3>>24]
941 eor $s0,$s0,$i1,ror#8
942 eor $s1,$s1,$i2,ror#16
943 eor $s2,$s2,$i3,ror#24
944 eor $s3,$s3,$t3,ror#8
955 subs $rounds,$rounds,#1
960 ldr $t1,[$tbl,#0] @ prefetch Td4
969 and $i1,lr,$s0,lsr#16
972 ldrb $s0,[$tbl,$s0,lsr#24] @ Td4[s0>>24]
973 ldrb $t1,[$tbl,$i1] @ Td4[s0>>16]
974 ldrb $t2,[$tbl,$i2] @ Td4[s0>>8]
975 ldrb $t3,[$tbl,$i3] @ Td4[s0>>0]
978 and $i2,lr,$s1,lsr#16
980 ldrb $i1,[$tbl,$i1] @ Td4[s1>>0]
981 ldrb $s1,[$tbl,$s1,lsr#24] @ Td4[s1>>24]
982 ldrb $i2,[$tbl,$i2] @ Td4[s1>>16]
983 ldrb $i3,[$tbl,$i3] @ Td4[s1>>8]
984 eor $s0,$i1,$s0,lsl#24
985 eor $s1,$t1,$s1,lsl#8
986 eor $t2,$t2,$i2,lsl#8
987 eor $t3,$t3,$i3,lsl#8
989 and $i1,lr,$s2,lsr#8 @ i0
991 and $i3,lr,$s2,lsr#16
992 ldrb $i1,[$tbl,$i1] @ Td4[s2>>8]
993 ldrb $i2,[$tbl,$i2] @ Td4[s2>>0]
994 ldrb $s2,[$tbl,$s2,lsr#24] @ Td4[s2>>24]
995 ldrb $i3,[$tbl,$i3] @ Td4[s2>>16]
996 eor $s0,$s0,$i1,lsl#8
997 eor $s1,$i2,$s1,lsl#16
998 eor $s2,$t2,$s2,lsl#16
999 eor $t3,$t3,$i3,lsl#16
1001 and $i1,lr,$s3,lsr#16 @ i0
1002 and $i2,lr,$s3,lsr#8 @ i1
1004 ldrb $i1,[$tbl,$i1] @ Td4[s3>>16]
1005 ldrb $i2,[$tbl,$i2] @ Td4[s3>>8]
1006 ldrb $i3,[$tbl,$i3] @ Td4[s3>>0]
1007 ldrb $s3,[$tbl,$s3,lsr#24] @ Td4[s3>>24]
1008 eor $s0,$s0,$i1,lsl#16
1009 eor $s1,$s1,$i2,lsl#8
1010 eor $s2,$i3,$s2,lsl#8
1011 eor $s3,$t3,$s3,lsl#24
1013 ldr lr,[sp],#4 @ pop lr
1025 .size _armv4_AES_decrypt,.-_armv4_AES_decrypt
1026 .asciz "AES for ARMv4, CRYPTOGAMS by <appro\@openssl.org>"