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opensecura / 3p / lowrisc / opentitan / af8c1121139632cdf1dd5d92c4b5415e912da615 / . / sw / otbn / code-snippets / rsa_1024_dec_test.s
blob: d8fa6ada776642e0c3ff74c2ffa0ae1844104574 [file] [log] [blame]
Felix Miller50c6c512020-10-15 14:06:08 +0200[diff] [blame]1/* Copyright lowRISC contributors. */
2/* Licensed under the Apache License, Version 2.0, see LICENSE for details. */
3/* SPDX-License-Identifier: Apache-2.0 */
4
5
6.text
7
8/**
9 * Standalone RSA 1024 decrypt
10 *
11 * Uses OTBN modexp bignum lib to decrypt the message from the .data segment
12 * in this file with the private key contained in .data segment of this file.
13 *
14 * Copies the decrypted message to wide registers for comparison (starting at
15 * w0). See comment at the end of the file for expected values.
16 */
Philipp Wagnercab83032020-11-04 15:28:12 +0000[diff] [blame]17 run_rsa_1024_dec:
Felix Miller1f371852020-10-31 22:22:32 +0100[diff] [blame]18 jal x1, modload
Felix Miller50c6c512020-10-15 14:06:08 +0200[diff] [blame]19 jal x1, modexp
20 /* pointer to out buffer */
Felix Miller8f31e6f2020-11-02 01:56:43 +0100[diff] [blame]21 lw x21, 28(x0)
Felix Miller50c6c512020-10-15 14:06:08 +0200[diff] [blame]22
23 /* copy all limbs of result to wide reg file */
24 li x8, 0
25 loop x30, 2
26 bn.lid x8, 0(x21++)
27 addi x8, x8, 1
28
29 ecall
30
31
32.data
33
Felix Miller8f31e6f2020-11-02 01:56:43 +0100[diff] [blame]34/* reserved */
35.word 0x00000000
Felix Miller50c6c512020-10-15 14:06:08 +0200[diff] [blame]36
Felix Miller8f31e6f2020-11-02 01:56:43 +0100[diff] [blame]37/* number of limbs (N) */
Felix Miller50c6c512020-10-15 14:06:08 +0200[diff] [blame]38.word 0x00000004
Felix Miller50c6c512020-10-15 14:06:08 +0200[diff] [blame]39
Felix Miller8f31e6f2020-11-02 01:56:43 +0100[diff] [blame]40/* pointer to m0' (dptr_m0d) */
Felix Miller50c6c512020-10-15 14:06:08 +0200[diff] [blame]41.word 0x00000280
Felix Miller8f31e6f2020-11-02 01:56:43 +0100[diff] [blame]42
43/* pointer to RR (dptr_rr) */
Felix Miller50c6c512020-10-15 14:06:08 +0200[diff] [blame]44.word 0x000002c0
Felix Miller8f31e6f2020-11-02 01:56:43 +0100[diff] [blame]45
46/* load pointer to modulus (dptr_m) */
47.word 0x00000080
48
49/* pointer to base bignum buffer (dptr_in) */
Felix Miller50c6c512020-10-15 14:06:08 +0200[diff] [blame]50.word 0x000004c0
Felix Miller50c6c512020-10-15 14:06:08 +0200[diff] [blame]51
Felix Miller8f31e6f2020-11-02 01:56:43 +0100[diff] [blame]52/* pointer to exponent buffer (dptr_exp) */
Felix Miller50c6c512020-10-15 14:06:08 +0200[diff] [blame]53.word 0x000006c0
Felix Miller8f31e6f2020-11-02 01:56:43 +0100[diff] [blame]54
55/* pointer to out buffer (dptr_out) */
56.word 0x000008c0
Felix Miller50c6c512020-10-15 14:06:08 +0200[diff] [blame]57
58
Felix Miller8f31e6f2020-11-02 01:56:43 +0100[diff] [blame]59/* Modulus */
60/* skip to 128 */
61.skip 96
62
Felix Miller50c6c512020-10-15 14:06:08 +0200[diff] [blame]63.word 0xc28cf49f
64.word 0xb6e64c3b
65.word 0xa21417f1
66.word 0x34ab89fe
67.word 0xe4d4c752
68.word 0xe9289a03
69.word 0xc8aa371c
70.word 0xafb68c05
71
72.word 0x893c882e
73.word 0xa62c908d
74.word 0xd23f4ebf
75.word 0xea5bb198
76.word 0xdb6f076f
77.word 0xcfcc4b48
78.word 0x75a24aa4
79.word 0x7bda03fc
80
81.word 0xcb5adf60
82.word 0xbc7c20bc
83.word 0x8ea4f2fe
84.word 0x3ba5d46d
85.word 0x21536a4e
86.word 0x7f292995
87.word 0xaafd0e56
88.word 0xc8033b94
89
90.word 0x127ca9e8
91.word 0xa3998c2e
92.word 0xecf3ecf6
93.word 0xc39b1e20
94.word 0xdc59f4e7
95.word 0x5affc57c
96.word 0x0a4536b4
97.word 0x962be299
98
99
100/* encrypted message */
101/* skip to 1216 */
102.skip 960
103
104.word 0xe0e14a9b
105.word 0x7ae96741
106.word 0x4a430036
107.word 0xcda13a47
108.word 0x79524410
109.word 0x3810cd51
110.word 0x3b47425f
111.word 0x686f3abe
112
113.word 0x91dff899
114.word 0xbfa8b284
115.word 0x0539e396
116.word 0xa66cf53c
117.word 0xbcdc315a
118.word 0x0d595811
119.word 0x0a522e08
120.word 0x5b9dce33
121
122.word 0x6fde2d48
123.word 0x587a618e
124.word 0x6b4c0c56
125.word 0x4affcc62
126.word 0x6a88ead2
127.word 0x991f39d0
128.word 0x39f88b9a
129.word 0x3c0d6626
130
131.word 0xa3fe6181
132.word 0x82f3f1f6
133.word 0x43f4ed0b
134.word 0x938bfd7b
135.word 0x60de8b63
136.word 0x8ade6cc0
137.word 0x91f560d7
138.word 0x35f506d1
139
140
141/* private exponent */
142/* skip to 1728 */
143.skip 384
144
145.word 0x93a8cd95
146.word 0x24a2614b
147.word 0xeeb788b3
148.word 0x6dfc48e4
149.word 0xca97cdc4
150.word 0x41146c79
151.word 0xf4ca744b
152.word 0xc386c827
153
154.word 0xd9ddaef3
155.word 0xae51440f
156.word 0x9741739d
157.word 0x9ebad71b
158.word 0x9a7a2bfd
159.word 0xfbd58848
160.word 0x13464f06
161.word 0x17f60ed9
162
163.word 0x1d63a0b9
164.word 0x581ccd6c
165.word 0x951579d6
166.word 0x35a9ec64
167.word 0xc3a08e32
168.word 0xdd2f62e8
169.word 0xc3739e4a
170.word 0x01ca5c4e
171
172.word 0x3a107e7d
173.word 0xf9dacc79
174.word 0x49ecbe20
175.word 0x5d21e910
176.word 0x9550ecb5
177.word 0x511778ce
178.word 0x42209f7b
179.word 0x41b468dc
180
181/* Expected decrypted Message in wide register file:
182w0 = 0x656e637279707420616e642064656372797074207468697320666f72206d653f
183w1 = 0x0000000000000000000048656c6c6f206269676e756d2c2063616e20796f7520
184w2 = 0x0000000000000000000000000000000000000000000000000000000000000000
185w3 = 0x0000000000000000000000000000000000000000000000000000000000000000
186*/