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 >2 times faster than code compiled
15 # with 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
43 .word 0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d
44 .word 0xfff2f20d, 0xd66b6bbd, 0xde6f6fb1, 0x91c5c554
45 .word 0x60303050, 0x02010103, 0xce6767a9, 0x562b2b7d
46 .word 0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a
47 .word 0x8fcaca45, 0x1f82829d, 0x89c9c940, 0xfa7d7d87
48 .word 0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b
49 .word 0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea
50 .word 0x239c9cbf, 0x53a4a4f7, 0xe4727296, 0x9bc0c05b
51 .word 0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a
52 .word 0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f
53 .word 0x6834345c, 0x51a5a5f4, 0xd1e5e534, 0xf9f1f108
54 .word 0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f
55 .word 0x0804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e
56 .word 0x30181828, 0x379696a1, 0x0a05050f, 0x2f9a9ab5
57 .word 0x0e070709, 0x24121236, 0x1b80809b, 0xdfe2e23d
58 .word 0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f
59 .word 0x1209091b, 0x1d83839e, 0x582c2c74, 0x341a1a2e
60 .word 0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb
61 .word 0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce
62 .word 0x5229297b, 0xdde3e33e, 0x5e2f2f71, 0x13848497
63 .word 0xa65353f5, 0xb9d1d168, 0x00000000, 0xc1eded2c
64 .word 0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed
65 .word 0xd46a6abe, 0x8dcbcb46, 0x67bebed9, 0x7239394b
66 .word 0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a
67 .word 0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16
68 .word 0x864343c5, 0x9a4d4dd7, 0x66333355, 0x11858594
69 .word 0x8a4545cf, 0xe9f9f910, 0x04020206, 0xfe7f7f81
70 .word 0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3
71 .word 0xa25151f3, 0x5da3a3fe, 0x804040c0, 0x058f8f8a
72 .word 0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504
73 .word 0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163
74 .word 0x20101030, 0xe5ffff1a, 0xfdf3f30e, 0xbfd2d26d
75 .word 0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f
76 .word 0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739
77 .word 0x93c4c457, 0x55a7a7f2, 0xfc7e7e82, 0x7a3d3d47
78 .word 0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395
79 .word 0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f
80 .word 0x44222266, 0x542a2a7e, 0x3b9090ab, 0x0b888883
81 .word 0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c
82 .word 0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76
83 .word 0xdbe0e03b, 0x64323256, 0x743a3a4e, 0x140a0a1e
84 .word 0x924949db, 0x0c06060a, 0x4824246c, 0xb85c5ce4
85 .word 0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6
86 .word 0x399191a8, 0x319595a4, 0xd3e4e437, 0xf279798b
87 .word 0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7
88 .word 0x018d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0
89 .word 0xd86c6cb4, 0xac5656fa, 0xf3f4f407, 0xcfeaea25
90 .word 0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818
91 .word 0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72
92 .word 0x381c1c24, 0x57a6a6f1, 0x73b4b4c7, 0x97c6c651
93 .word 0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21
94 .word 0x964b4bdd, 0x61bdbddc, 0x0d8b8b86, 0x0f8a8a85
95 .word 0xe0707090, 0x7c3e3e42, 0x71b5b5c4, 0xcc6666aa
96 .word 0x904848d8, 0x06030305, 0xf7f6f601, 0x1c0e0e12
97 .word 0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0
98 .word 0x17868691, 0x99c1c158, 0x3a1d1d27, 0x279e9eb9
99 .word 0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133
100 .word 0xd26969bb, 0xa9d9d970, 0x078e8e89, 0x339494a7
101 .word 0x2d9b9bb6, 0x3c1e1e22, 0x15878792, 0xc9e9e920
102 .word 0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a
103 .word 0x038c8c8f, 0x59a1a1f8, 0x09898980, 0x1a0d0d17
104 .word 0x65bfbfda, 0xd7e6e631, 0x844242c6, 0xd06868b8
105 .word 0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11
106 .word 0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a
107 .size AES_Te,.-AES_Te
109 @ void AES_encrypt(const unsigned char *in, unsigned char *out,
110 @ const AES_KEY *key) {
112 .type AES_encrypt,%function
115 sub r3,pc,#8 @ AES_encrypt
116 stmdb sp!,{r1,r4-r12,lr}
119 sub $tbl,r3,#1024 @ Te
120 ldrb $s0,[$rounds,#3] @ load input data in endian-neutral
121 ldrb $t1,[$rounds,#2] @ manner...
122 ldrb $t2,[$rounds,#1]
123 ldrb $t3,[$rounds,#0]
124 orr $s0,$s0,$t1,lsl#8
125 orr $s0,$s0,$t2,lsl#16
126 orr $s0,$s0,$t3,lsl#24
127 ldrb $s1,[$rounds,#7]
128 ldrb $t1,[$rounds,#6]
129 ldrb $t2,[$rounds,#5]
130 ldrb $t3,[$rounds,#4]
131 orr $s1,$s1,$t1,lsl#8
132 orr $s1,$s1,$t2,lsl#16
133 orr $s1,$s1,$t3,lsl#24
134 ldrb $s2,[$rounds,#11]
135 ldrb $t1,[$rounds,#10]
136 ldrb $t2,[$rounds,#9]
137 ldrb $t3,[$rounds,#8]
138 orr $s2,$s2,$t1,lsl#8
139 orr $s2,$s2,$t2,lsl#16
140 orr $s2,$s2,$t3,lsl#24
141 ldrb $s3,[$rounds,#15]
142 ldrb $t1,[$rounds,#14]
143 ldrb $t2,[$rounds,#13]
144 ldrb $t3,[$rounds,#12]
145 orr $s3,$s3,$t1,lsl#8
146 orr $s3,$s3,$t2,lsl#16
147 orr $s3,$s3,$t3,lsl#24
149 bl _armv4_AES_encrypt
151 ldr $rounds,[sp],#4 @ pop out
152 mov $t1,$s0,lsr#24 @ write output in endian-neutral
153 mov $t2,$s0,lsr#16 @ manner...
155 strb $t1,[$rounds,#0]
156 strb $t2,[$rounds,#1]
157 strb $t3,[$rounds,#2]
158 strb $s0,[$rounds,#3]
162 strb $t1,[$rounds,#4]
163 strb $t2,[$rounds,#5]
164 strb $t3,[$rounds,#6]
165 strb $s1,[$rounds,#7]
169 strb $t1,[$rounds,#8]
170 strb $t2,[$rounds,#9]
171 strb $t3,[$rounds,#10]
172 strb $s2,[$rounds,#11]
176 strb $t1,[$rounds,#12]
177 strb $t2,[$rounds,#13]
178 strb $t3,[$rounds,#14]
179 strb $s3,[$rounds,#15]
181 ldmia sp!,{r4-r12,lr}
183 moveq pc,lr @ be binary compatible with V4, yet
184 bx lr @ interoperable with Thumb ISA:-)
185 .size AES_encrypt,.-AES_encrypt
187 .type _armv4_AES_encrypt,%function
190 str lr,[sp,#-4]! @ push lr
195 ldr $rounds,[$key,#240-16]
200 sub $rounds,$rounds,#1
205 and $i3,lr,$s0,lsr#16
208 ldr $t1,[$tbl,$i1,lsl#2] @ Te3[s0>>0]
209 ldr $s0,[$tbl,$s0,lsl#2] @ Te0[s0>>24]
210 ldr $t2,[$tbl,$i2,lsl#2] @ Te2[s0>>8]
211 ldr $t3,[$tbl,$i3,lsl#2] @ Te1[s0>>16]
213 and $i1,lr,$s1,lsr#16 @ i0
217 ldr $i1,[$tbl,$i1,lsl#2] @ Te1[s1>>16]
218 ldr $s1,[$tbl,$s1,lsl#2] @ Te0[s1>>24]
219 ldr $i2,[$tbl,$i2,lsl#2] @ Te3[s1>>0]
220 ldr $i3,[$tbl,$i3,lsl#2] @ Te2[s1>>8]
221 eor $s0,$s0,$i1,ror#8
222 eor $s1,$s1,$t1,ror#24
223 eor $t2,$t2,$i2,ror#8
224 eor $t3,$t3,$i3,ror#8
226 and $i1,lr,$s2,lsr#8 @ i0
227 and $i2,lr,$s2,lsr#16 @ i1
230 ldr $i1,[$tbl,$i1,lsl#2] @ Te2[s2>>8]
231 ldr $i2,[$tbl,$i2,lsl#2] @ Te1[s2>>16]
232 ldr $s2,[$tbl,$s2,lsl#2] @ Te0[s2>>24]
233 ldr $i3,[$tbl,$i3,lsl#2] @ Te3[s2>>0]
234 eor $s0,$s0,$i1,ror#16
235 eor $s1,$s1,$i2,ror#8
236 eor $s2,$s2,$t2,ror#16
237 eor $t3,$t3,$i3,ror#16
240 and $i2,lr,$s3,lsr#8 @ i1
241 and $i3,lr,$s3,lsr#16 @ i2
243 ldr $i1,[$tbl,$i1,lsl#2] @ Te3[s3>>0]
244 ldr $i2,[$tbl,$i2,lsl#2] @ Te2[s3>>8]
245 ldr $i3,[$tbl,$i3,lsl#2] @ Te1[s3>>16]
246 ldr $s3,[$tbl,$s3,lsl#2] @ Te0[s3>>24]
247 eor $s0,$s0,$i1,ror#24
248 eor $s1,$s1,$i2,ror#16
249 eor $s2,$s2,$i3,ror#8
250 eor $s3,$s3,$t3,ror#8
261 subs $rounds,$rounds,#1
268 and $i3,lr,$s0,lsr#16
270 ldrb $t1,[$tbl,$i1,lsl#2] @ Te4[s0>>0]
271 ldrb $s0,[$tbl,$s0,lsl#2] @ Te4[s0>>24]
272 ldrb $t2,[$tbl,$i2,lsl#2] @ Te4[s0>>8]
273 ldrb $t3,[$tbl,$i3,lsl#2] @ Te4[s0>>16]
275 and $i1,lr,$s1,lsr#16 @ i0
279 ldrb $i1,[$tbl,$i1,lsl#2] @ Te4[s1>>16]
280 ldrb $s1,[$tbl,$s1,lsl#2] @ Te4[s1>>24]
281 ldrb $i2,[$tbl,$i2,lsl#2] @ Te4[s1>>0]
282 ldrb $i3,[$tbl,$i3,lsl#2] @ Te4[s1>>8]
283 eor $s0,$i1,$s0,lsl#8
284 eor $s1,$t1,$s1,lsl#24
285 eor $t2,$i2,$t2,lsl#8
286 eor $t3,$i3,$t3,lsl#8
288 and $i1,lr,$s2,lsr#8 @ i0
289 and $i2,lr,$s2,lsr#16 @ i1
292 ldrb $i1,[$tbl,$i1,lsl#2] @ Te4[s2>>8]
293 ldrb $i2,[$tbl,$i2,lsl#2] @ Te4[s2>>16]
294 ldrb $s2,[$tbl,$s2,lsl#2] @ Te4[s2>>24]
295 ldrb $i3,[$tbl,$i3,lsl#2] @ Te4[s2>>0]
296 eor $s0,$i1,$s0,lsl#8
297 eor $s1,$s1,$i2,lsl#16
298 eor $s2,$t2,$s2,lsl#24
299 eor $t3,$i3,$t3,lsl#8
302 and $i2,lr,$s3,lsr#8 @ i1
303 and $i3,lr,$s3,lsr#16 @ i2
305 ldrb $i1,[$tbl,$i1,lsl#2] @ Te4[s3>>0]
306 ldrb $i2,[$tbl,$i2,lsl#2] @ Te4[s3>>8]
307 ldrb $i3,[$tbl,$i3,lsl#2] @ Te4[s3>>16]
308 ldrb $s3,[$tbl,$s3,lsl#2] @ Te4[s3>>24]
309 eor $s0,$i1,$s0,lsl#8
310 eor $s1,$s1,$i2,lsl#8
311 eor $s2,$s2,$i3,lsl#16
312 eor $s3,$t3,$s3,lsl#24
314 ldr lr,[sp],#4 @ pop lr
326 .size _armv4_AES_encrypt,.-_armv4_AES_encrypt
331 .word 0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96
332 .word 0x3bab6bcb, 0x1f9d45f1, 0xacfa58ab, 0x4be30393
333 .word 0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25
334 .word 0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f
335 .word 0xdeb15a49, 0x25ba1b67, 0x45ea0e98, 0x5dfec0e1
336 .word 0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6
337 .word 0x038f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da
338 .word 0xd4be832d, 0x587421d3, 0x49e06929, 0x8ec9c844
339 .word 0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd
340 .word 0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4
341 .word 0x63df4a18, 0xe51a3182, 0x97513360, 0x62537f45
342 .word 0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94
343 .word 0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7
344 .word 0xab73d323, 0x724b02e2, 0xe31f8f57, 0x6655ab2a
345 .word 0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5
346 .word 0x302887f2, 0x23bfa5b2, 0x02036aba, 0xed16825c
347 .word 0x8acf1c2b, 0xa779b492, 0xf307f2f0, 0x4e69e2a1
348 .word 0x65daf4cd, 0x0605bed5, 0xd134621f, 0xc4a6fe8a
349 .word 0x342e539d, 0xa2f355a0, 0x058ae132, 0xa4f6eb75
350 .word 0x0b83ec39, 0x4060efaa, 0x5e719f06, 0xbd6e1051
351 .word 0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46
352 .word 0x91548db5, 0x71c45d05, 0x0406d46f, 0x605015ff
353 .word 0x1998fb24, 0xd6bde997, 0x894043cc, 0x67d99e77
354 .word 0xb0e842bd, 0x07898b88, 0xe7195b38, 0x79c8eedb
355 .word 0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x00000000
356 .word 0x09808683, 0x322bed48, 0x1e1170ac, 0x6c5a724e
357 .word 0xfd0efffb, 0x0f853856, 0x3daed51e, 0x362d3927
358 .word 0x0a0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a
359 .word 0x0c0a67b1, 0x9357e70f, 0xb4ee96d2, 0x1b9b919e
360 .word 0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16
361 .word 0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d
362 .word 0x0e090d0b, 0xf28bc7ad, 0x2db6a8b9, 0x141ea9c8
363 .word 0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd
364 .word 0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34
365 .word 0x8b432976, 0xcb23c6dc, 0xb6edfc68, 0xb8e4f163
366 .word 0xd731dcca, 0x42638510, 0x13972240, 0x84c61120
367 .word 0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d
368 .word 0x1d9e2f4b, 0xdcb230f3, 0x0d8652ec, 0x77c1e3d0
369 .word 0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422
370 .word 0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef
371 .word 0x87494ec7, 0xd938d1c1, 0x8ccaa2fe, 0x98d40b36
372 .word 0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4
373 .word 0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662
374 .word 0xf68d13c2, 0x90d8b8e8, 0x2e39f75e, 0x82c3aff5
375 .word 0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3
376 .word 0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b
377 .word 0xcd267809, 0x6e5918f4, 0xec9ab701, 0x834f9aa8
378 .word 0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6
379 .word 0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6
380 .word 0x31a4b2af, 0x2a3f2331, 0xc6a59430, 0x35a266c0
381 .word 0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815
382 .word 0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f
383 .word 0x764dd68d, 0x43efb04d, 0xccaa4d54, 0xe49604df
384 .word 0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f
385 .word 0x9d5eea04, 0x018c355d, 0xfa877473, 0xfb0b412e
386 .word 0xb3671d5a, 0x92dbd252, 0xe9105633, 0x6dd64713
387 .word 0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89
388 .word 0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c
389 .word 0x9cd2df59, 0x55f2733f, 0x1814ce79, 0x73c737bf
390 .word 0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86
391 .word 0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f
392 .word 0x161dc372, 0xbce2250c, 0x283c498b, 0xff0d9541
393 .word 0x39a80171, 0x080cb3de, 0xd8b4e49c, 0x6456c190
394 .word 0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742
396 .byte 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38
397 .byte 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb
398 .byte 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87
399 .byte 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb
400 .byte 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d
401 .byte 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e
402 .byte 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2
403 .byte 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25
404 .byte 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16
405 .byte 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92
406 .byte 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda
407 .byte 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84
408 .byte 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a
409 .byte 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06
410 .byte 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02
411 .byte 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b
412 .byte 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea
413 .byte 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73
414 .byte 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85
415 .byte 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e
416 .byte 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89
417 .byte 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b
418 .byte 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20
419 .byte 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4
420 .byte 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31
421 .byte 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f
422 .byte 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d
423 .byte 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef
424 .byte 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0
425 .byte 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61
426 .byte 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26
427 .byte 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
428 .size AES_Td,.-AES_Td
430 @ void AES_decrypt(const unsigned char *in, unsigned char *out,
431 @ const AES_KEY *key) {
433 .type AES_decrypt,%function
436 sub r3,pc,#8 @ AES_decrypt
437 stmdb sp!,{r1,r4-r12,lr}
440 sub $tbl,r3,#1280 @ Td
441 ldrb $s0,[$rounds,#3] @ load input data in endian-neutral
442 ldrb $t1,[$rounds,#2] @ manner...
443 ldrb $t2,[$rounds,#1]
444 ldrb $t3,[$rounds,#0]
445 orr $s0,$s0,$t1,lsl#8
446 orr $s0,$s0,$t2,lsl#16
447 orr $s0,$s0,$t3,lsl#24
448 ldrb $s1,[$rounds,#7]
449 ldrb $t1,[$rounds,#6]
450 ldrb $t2,[$rounds,#5]
451 ldrb $t3,[$rounds,#4]
452 orr $s1,$s1,$t1,lsl#8
453 orr $s1,$s1,$t2,lsl#16
454 orr $s1,$s1,$t3,lsl#24
455 ldrb $s2,[$rounds,#11]
456 ldrb $t1,[$rounds,#10]
457 ldrb $t2,[$rounds,#9]
458 ldrb $t3,[$rounds,#8]
459 orr $s2,$s2,$t1,lsl#8
460 orr $s2,$s2,$t2,lsl#16
461 orr $s2,$s2,$t3,lsl#24
462 ldrb $s3,[$rounds,#15]
463 ldrb $t1,[$rounds,#14]
464 ldrb $t2,[$rounds,#13]
465 ldrb $t3,[$rounds,#12]
466 orr $s3,$s3,$t1,lsl#8
467 orr $s3,$s3,$t2,lsl#16
468 orr $s3,$s3,$t3,lsl#24
470 bl _armv4_AES_decrypt
472 ldr $rounds,[sp],#4 @ pop out
473 mov $t1,$s0,lsr#24 @ write output in endian-neutral
474 mov $t2,$s0,lsr#16 @ manner...
476 strb $t1,[$rounds,#0]
477 strb $t2,[$rounds,#1]
478 strb $t3,[$rounds,#2]
479 strb $s0,[$rounds,#3]
483 strb $t1,[$rounds,#4]
484 strb $t2,[$rounds,#5]
485 strb $t3,[$rounds,#6]
486 strb $s1,[$rounds,#7]
490 strb $t1,[$rounds,#8]
491 strb $t2,[$rounds,#9]
492 strb $t3,[$rounds,#10]
493 strb $s2,[$rounds,#11]
497 strb $t1,[$rounds,#12]
498 strb $t2,[$rounds,#13]
499 strb $t3,[$rounds,#14]
500 strb $s3,[$rounds,#15]
502 ldmia sp!,{r4-r12,lr}
504 moveq pc,lr @ be binary compatible with V4, yet
505 bx lr @ interoperable with Thumb ISA:-)
506 .size AES_decrypt,.-AES_decrypt
508 .type _armv4_AES_decrypt,%function
511 str lr,[sp,#-4]! @ push lr
516 ldr $rounds,[$key,#240-16]
521 sub $rounds,$rounds,#1
525 and $i1,lr,$s0,lsr#16
529 ldr $t1,[$tbl,$i1,lsl#2] @ Td1[s0>>16]
530 ldr $s0,[$tbl,$s0,lsl#2] @ Td0[s0>>24]
531 ldr $t2,[$tbl,$i2,lsl#2] @ Td2[s0>>8]
532 ldr $t3,[$tbl,$i3,lsl#2] @ Td3[s0>>0]
535 and $i2,lr,$s1,lsr#16
538 ldr $i1,[$tbl,$i1,lsl#2] @ Td3[s1>>0]
539 ldr $s1,[$tbl,$s1,lsl#2] @ Td0[s1>>24]
540 ldr $i2,[$tbl,$i2,lsl#2] @ Td1[s1>>16]
541 ldr $i3,[$tbl,$i3,lsl#2] @ Td2[s1>>8]
542 eor $s0,$s0,$i1,ror#24
543 eor $s1,$s1,$t1,ror#8
544 eor $t2,$i2,$t2,ror#8
545 eor $t3,$i3,$t3,ror#8
547 and $i1,lr,$s2,lsr#8 @ i0
549 and $i3,lr,$s2,lsr#16
551 ldr $i1,[$tbl,$i1,lsl#2] @ Td2[s2>>8]
552 ldr $i2,[$tbl,$i2,lsl#2] @ Td3[s2>>0]
553 ldr $s2,[$tbl,$s2,lsl#2] @ Td0[s2>>24]
554 ldr $i3,[$tbl,$i3,lsl#2] @ Td1[s2>>16]
555 eor $s0,$s0,$i1,ror#16
556 eor $s1,$s1,$i2,ror#24
557 eor $s2,$s2,$t2,ror#8
558 eor $t3,$i3,$t3,ror#8
560 and $i1,lr,$s3,lsr#16 @ i0
561 and $i2,lr,$s3,lsr#8 @ i1
564 ldr $i1,[$tbl,$i1,lsl#2] @ Td1[s3>>16]
565 ldr $i2,[$tbl,$i2,lsl#2] @ Td2[s3>>8]
566 ldr $i3,[$tbl,$i3,lsl#2] @ Td3[s3>>0]
567 ldr $s3,[$tbl,$s3,lsl#2] @ Td0[s3>>24]
568 eor $s0,$s0,$i1,ror#8
569 eor $s1,$s1,$i2,ror#16
570 eor $s2,$s2,$i3,ror#24
571 eor $s3,$s3,$t3,ror#8
582 subs $rounds,$rounds,#1
587 ldr $t1,[$tbl,#0] @ prefetch Td4
596 and $i1,lr,$s0,lsr#16
599 ldrb $s0,[$tbl,$s0,lsr#24] @ Td4[s0>>24]
600 ldrb $t1,[$tbl,$i1] @ Td4[s0>>16]
601 ldrb $t2,[$tbl,$i2] @ Td4[s0>>8]
602 ldrb $t3,[$tbl,$i3] @ Td4[s0>>0]
605 and $i2,lr,$s1,lsr#16
607 ldrb $i1,[$tbl,$i1] @ Td4[s1>>0]
608 ldrb $s1,[$tbl,$s1,lsr#24] @ Td4[s1>>24]
609 ldrb $i2,[$tbl,$i2] @ Td4[s1>>16]
610 ldrb $i3,[$tbl,$i3] @ Td4[s1>>8]
611 eor $s0,$i1,$s0,lsl#24
612 eor $s1,$t1,$s1,lsl#8
613 eor $t2,$t2,$i2,lsl#8
614 eor $t3,$t3,$i3,lsl#8
616 and $i1,lr,$s2,lsr#8 @ i0
618 and $i3,lr,$s2,lsr#16
619 ldrb $i1,[$tbl,$i1] @ Td4[s2>>8]
620 ldrb $i2,[$tbl,$i2] @ Td4[s2>>0]
621 ldrb $s2,[$tbl,$s2,lsr#24] @ Td4[s2>>24]
622 ldrb $i3,[$tbl,$i3] @ Td4[s2>>16]
623 eor $s0,$s0,$i1,lsl#8
624 eor $s1,$i2,$s1,lsl#16
625 eor $s2,$t2,$s2,lsl#16
626 eor $t3,$t3,$i3,lsl#16
628 and $i1,lr,$s3,lsr#16 @ i0
629 and $i2,lr,$s3,lsr#8 @ i1
631 ldrb $i1,[$tbl,$i1] @ Td4[s3>>16]
632 ldrb $i2,[$tbl,$i2] @ Td4[s3>>8]
633 ldrb $i3,[$tbl,$i3] @ Td4[s3>>0]
634 ldrb $s3,[$tbl,$s3,lsr#24] @ Td4[s3>>24]
635 eor $s0,$s0,$i1,lsl#16
636 eor $s1,$s1,$i2,lsl#8
637 eor $s2,$i3,$s2,lsl#8
638 eor $s3,$t3,$s3,lsl#24
640 ldr lr,[sp],#4 @ pop lr
652 .size _armv4_AES_decrypt,.-_armv4_AES_decrypt
653 .asciz "AES for ARMv4, CRYPTOGAMS by <appro\@openssl.org>"