1 /* $NetBSD: aes_ssse3_impl.c,v 1.4 2020/07/25 22:31:04 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2020 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(1, "$NetBSD: aes_ssse3_impl.c,v 1.4 2020/07/25 22:31:04 riastradh Exp $"); 31 32 #include <crypto/aes/aes.h> 33 #include <crypto/aes/aes_impl.h> 34 #include <crypto/aes/arch/x86/aes_ssse3.h> 35 36 #ifdef _KERNEL 37 #include <x86/cpu.h> 38 #include <x86/cpuvar.h> 39 #include <x86/fpu.h> 40 #include <x86/specialreg.h> 41 #else 42 #include <cpuid.h> 43 #define fpu_kern_enter() ((void)0) 44 #define fpu_kern_leave() ((void)0) 45 #endif 46 47 static void 48 aes_ssse3_setenckey_impl(struct aesenc *enc, const uint8_t *key, 49 uint32_t nrounds) 50 { 51 52 fpu_kern_enter(); 53 aes_ssse3_setenckey(enc, key, nrounds); 54 fpu_kern_leave(); 55 } 56 57 static void 58 aes_ssse3_setdeckey_impl(struct aesdec *dec, const uint8_t *key, 59 uint32_t nrounds) 60 { 61 62 fpu_kern_enter(); 63 aes_ssse3_setdeckey(dec, key, nrounds); 64 fpu_kern_leave(); 65 } 66 67 static void 68 aes_ssse3_enc_impl(const struct aesenc *enc, const uint8_t in[static 16], 69 uint8_t out[static 16], uint32_t nrounds) 70 { 71 72 fpu_kern_enter(); 73 aes_ssse3_enc(enc, in, out, nrounds); 74 fpu_kern_leave(); 75 } 76 77 static void 78 aes_ssse3_dec_impl(const struct aesdec *dec, const uint8_t in[static 16], 79 uint8_t out[static 16], uint32_t nrounds) 80 { 81 82 fpu_kern_enter(); 83 aes_ssse3_dec(dec, in, out, nrounds); 84 fpu_kern_leave(); 85 } 86 87 static void 88 aes_ssse3_cbc_enc_impl(const struct aesenc *enc, const uint8_t in[static 16], 89 uint8_t out[static 16], size_t nbytes, uint8_t iv[static 16], 90 uint32_t nrounds) 91 { 92 93 if (nbytes == 0) 94 return; 95 fpu_kern_enter(); 96 aes_ssse3_cbc_enc(enc, in, out, nbytes, iv, nrounds); 97 fpu_kern_leave(); 98 } 99 100 static void 101 aes_ssse3_cbc_dec_impl(const struct aesdec *dec, const uint8_t in[static 16], 102 uint8_t out[static 16], size_t nbytes, uint8_t iv[static 16], 103 uint32_t nrounds) 104 { 105 106 if (nbytes == 0) 107 return; 108 fpu_kern_enter(); 109 aes_ssse3_cbc_dec(dec, in, out, nbytes, iv, nrounds); 110 fpu_kern_leave(); 111 } 112 113 static void 114 aes_ssse3_xts_enc_impl(const struct aesenc *enc, const uint8_t in[static 16], 115 uint8_t out[static 16], size_t nbytes, uint8_t iv[static 16], 116 uint32_t nrounds) 117 { 118 119 if (nbytes == 0) 120 return; 121 fpu_kern_enter(); 122 aes_ssse3_xts_enc(enc, in, out, nbytes, iv, nrounds); 123 fpu_kern_leave(); 124 } 125 126 static void 127 aes_ssse3_xts_dec_impl(const struct aesdec *dec, const uint8_t in[static 16], 128 uint8_t out[static 16], size_t nbytes, uint8_t iv[static 16], 129 uint32_t nrounds) 130 { 131 132 if (nbytes == 0) 133 return; 134 fpu_kern_enter(); 135 aes_ssse3_xts_dec(dec, in, out, nbytes, iv, nrounds); 136 fpu_kern_leave(); 137 } 138 139 static void 140 aes_ssse3_cbcmac_update1_impl(const struct aesenc *enc, 141 const uint8_t in[static 16], size_t nbytes, uint8_t auth[static 16], 142 uint32_t nrounds) 143 { 144 145 fpu_kern_enter(); 146 aes_ssse3_cbcmac_update1(enc, in, nbytes, auth, nrounds); 147 fpu_kern_leave(); 148 } 149 150 static void 151 aes_ssse3_ccm_enc1_impl(const struct aesenc *enc, const uint8_t in[static 16], 152 uint8_t out[static 16], size_t nbytes, uint8_t authctr[static 32], 153 uint32_t nrounds) 154 { 155 156 fpu_kern_enter(); 157 aes_ssse3_ccm_enc1(enc, in, out, nbytes, authctr, nrounds); 158 fpu_kern_leave(); 159 } 160 161 static void 162 aes_ssse3_ccm_dec1_impl(const struct aesenc *enc, const uint8_t in[static 16], 163 uint8_t out[static 16], size_t nbytes, uint8_t authctr[static 32], 164 uint32_t nrounds) 165 { 166 167 fpu_kern_enter(); 168 aes_ssse3_ccm_dec1(enc, in, out, nbytes, authctr, nrounds); 169 fpu_kern_leave(); 170 } 171 172 static int 173 aes_ssse3_probe(void) 174 { 175 int result = 0; 176 177 /* Verify that the CPU supports SSE, SSE2, SSE3, and SSSE3. */ 178 #ifdef _KERNEL 179 if (!i386_has_sse) 180 return -1; 181 if (!i386_has_sse2) 182 return -1; 183 if (((cpu_feature[1]) & CPUID2_SSE3) == 0) 184 return -1; 185 if (((cpu_feature[1]) & CPUID2_SSSE3) == 0) 186 return -1; 187 #else 188 unsigned eax, ebx, ecx, edx; 189 if (!__get_cpuid(1, &eax, &ebx, &ecx, &edx)) 190 return -1; 191 if ((edx & bit_SSE) == 0) 192 return -1; 193 if ((edx & bit_SSE2) == 0) 194 return -1; 195 if ((ecx & bit_SSE3) == 0) 196 return -1; 197 if ((ecx & bit_SSSE3) == 0) 198 return -1; 199 #endif 200 201 fpu_kern_enter(); 202 result = aes_ssse3_selftest(); 203 fpu_kern_leave(); 204 205 return result; 206 } 207 208 struct aes_impl aes_ssse3_impl = { 209 .ai_name = "Intel SSSE3 vpaes", 210 .ai_probe = aes_ssse3_probe, 211 .ai_setenckey = aes_ssse3_setenckey_impl, 212 .ai_setdeckey = aes_ssse3_setdeckey_impl, 213 .ai_enc = aes_ssse3_enc_impl, 214 .ai_dec = aes_ssse3_dec_impl, 215 .ai_cbc_enc = aes_ssse3_cbc_enc_impl, 216 .ai_cbc_dec = aes_ssse3_cbc_dec_impl, 217 .ai_xts_enc = aes_ssse3_xts_enc_impl, 218 .ai_xts_dec = aes_ssse3_xts_dec_impl, 219 .ai_cbcmac_update1 = aes_ssse3_cbcmac_update1_impl, 220 .ai_ccm_enc1 = aes_ssse3_ccm_enc1_impl, 221 .ai_ccm_dec1 = aes_ssse3_ccm_dec1_impl, 222 }; 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Indexes created Sun Sep 21 20:09:37 GMT 2025