| /* Copyright lowRISC contributors. */ |
| /* Licensed under the Apache License, Version 2.0, see LICENSE for details. */ |
| /* SPDX-License-Identifier: Apache-2.0 */ |
| |
| |
| .text |
| |
| /** |
| * Standalone RSA 1024 encrypt |
| * |
| * Uses OTBN modexp bignum lib to encrypt the message from the .data segment |
| * in this file with the public key consisting of e=65537 and modulus from |
| * .data segment in this file. |
| * |
| * Copies the encrypted message to wide registers for comparison (starting at |
| * w0). See comment at the end of the file for expected values. |
| */ |
| run_rsa_1024_enc: |
| jal x1, modload |
| jal x1, modexp_65537 |
| /* pointer to out buffer */ |
| lw x21, 28(x0) |
| |
| /* copy all limbs of result to wide reg file */ |
| li x8, 0 |
| loop x30, 2 |
| bn.lid x8, 0(x21++) |
| addi x8, x8, 1 |
| |
| ecall |
| |
| |
| .data |
| |
| /* reserved */ |
| .word 0x00000000 |
| |
| /* number of limbs (N) */ |
| .word 0x00000004 |
| |
| /* pointer to m0' (dptr_m0d) */ |
| .word 0x00000280 |
| |
| /* pointer to RR (dptr_rr) */ |
| .word 0x000002c0 |
| |
| /* load pointer to modulus (dptr_m) */ |
| .word 0x00000080 |
| |
| /* pointer to base bignum buffer (dptr_in) */ |
| .word 0x000004c0 |
| |
| /* pointer to exponent buffer (dptr_exp, unused for encrypt) */ |
| .word 0x000006c0 |
| |
| /* pointer to out buffer (dptr_out) */ |
| .word 0x000008c0 |
| |
| |
| /* Modulus */ |
| /* skip to 128 */ |
| .skip 96 |
| |
| .word 0xc28cf49f |
| .word 0xb6e64c3b |
| .word 0xa21417f1 |
| .word 0x34ab89fe |
| .word 0xe4d4c752 |
| .word 0xe9289a03 |
| .word 0xc8aa371c |
| .word 0xafb68c05 |
| |
| .word 0x893c882e |
| .word 0xa62c908d |
| .word 0xd23f4ebf |
| .word 0xea5bb198 |
| .word 0xdb6f076f |
| .word 0xcfcc4b48 |
| .word 0x75a24aa4 |
| .word 0x7bda03fc |
| |
| .word 0xcb5adf60 |
| .word 0xbc7c20bc |
| .word 0x8ea4f2fe |
| .word 0x3ba5d46d |
| .word 0x21536a4e |
| .word 0x7f292995 |
| .word 0xaafd0e56 |
| .word 0xc8033b94 |
| |
| .word 0x127ca9e8 |
| .word 0xa3998c2e |
| .word 0xecf3ecf6 |
| .word 0xc39b1e20 |
| .word 0xdc59f4e7 |
| .word 0x5affc57c |
| .word 0x0a4536b4 |
| .word 0x962be299 |
| |
| |
| /* Message */ |
| /* skip to 1216 */ |
| .skip 960 |
| |
| .word 0x206d653f |
| .word 0x20666f72 |
| .word 0x74686973 |
| .word 0x79707420 |
| .word 0x64656372 |
| .word 0x616e6420 |
| .word 0x79707420 |
| .word 0x656e6372 |
| |
| .word 0x796f7520 |
| .word 0x63616e20 |
| .word 0x756d2c20 |
| .word 0x6269676e |
| .word 0x6c6c6f20 |
| .word 0x00004865 |
| .word 0x00000000 |
| .word 0x00000000 |
| |
| .word 0x00000000 |
| .word 0x00000000 |
| .word 0x00000000 |
| .word 0x00000000 |
| .word 0x00000000 |
| .word 0x00000000 |
| .word 0x00000000 |
| .word 0x00000000 |
| |
| .word 0x00000000 |
| .word 0x00000000 |
| .word 0x00000000 |
| .word 0x00000000 |
| .word 0x00000000 |
| .word 0x00000000 |
| .word 0x00000000 |
| .word 0x00000000 |
| |
| /* Expected encrypted Message in regfile: |
| w0 = 0x686f3abe3b47425f3810cd5179524410cda13a474a4300367ae96741e0e14a9b |
| w1 = 0x5b9dce330a522e080d595811bcdc315aa66cf53c0539e396bfa8b28491dff899 |
| w2 = 0x3c0d662639f88b9a991f39d06a88ead24affcc626b4c0c56587a618e6fde2d48 |
| w3 = 0x35f506d191f560d78ade6cc060de8b63938bfd7b43f4ed0b82f3f1f6a3fe6181 |
| */ |
