741 lines · c
1// SPDX-License-Identifier: GPL-2.02/*3 * Minimal library implementation of GCM4 *5 * Copyright 2022 Google LLC6 */7 8#include <linux/module.h>9 10#include <crypto/algapi.h>11#include <crypto/gcm.h>12#include <crypto/ghash.h>13 14#include <asm/irqflags.h>15 16static void aesgcm_encrypt_block(const struct crypto_aes_ctx *ctx, void *dst,17 const void *src)18{19 unsigned long flags;20 21 /*22 * In AES-GCM, both the GHASH key derivation and the CTR mode23 * encryption operate on known plaintext, making them susceptible to24 * timing attacks on the encryption key. The AES library already25 * mitigates this risk to some extent by pulling the entire S-box into26 * the caches before doing any substitutions, but this strategy is more27 * effective when running with interrupts disabled.28 */29 local_irq_save(flags);30 aes_encrypt(ctx, dst, src);31 local_irq_restore(flags);32}33 34/**35 * aesgcm_expandkey - Expands the AES and GHASH keys for the AES-GCM key36 * schedule37 *38 * @ctx: The data structure that will hold the AES-GCM key schedule39 * @key: The AES encryption input key40 * @keysize: The length in bytes of the input key41 * @authsize: The size in bytes of the GCM authentication tag42 *43 * Returns: 0 on success, or -EINVAL if @keysize or @authsize contain values44 * that are not permitted by the GCM specification.45 */46int aesgcm_expandkey(struct aesgcm_ctx *ctx, const u8 *key,47 unsigned int keysize, unsigned int authsize)48{49 u8 kin[AES_BLOCK_SIZE] = {};50 int ret;51 52 ret = crypto_gcm_check_authsize(authsize) ?:53 aes_expandkey(&ctx->aes_ctx, key, keysize);54 if (ret)55 return ret;56 57 ctx->authsize = authsize;58 aesgcm_encrypt_block(&ctx->aes_ctx, &ctx->ghash_key, kin);59 60 return 0;61}62EXPORT_SYMBOL(aesgcm_expandkey);63 64static void aesgcm_ghash(be128 *ghash, const be128 *key, const void *src,65 int len)66{67 while (len > 0) {68 crypto_xor((u8 *)ghash, src, min(len, GHASH_BLOCK_SIZE));69 gf128mul_lle(ghash, key);70 71 src += GHASH_BLOCK_SIZE;72 len -= GHASH_BLOCK_SIZE;73 }74}75 76/**77 * aesgcm_mac - Generates the authentication tag using AES-GCM algorithm.78 * @ctx: The data structure that will hold the AES-GCM key schedule79 * @src: The input source data.80 * @src_len: Length of the source data.81 * @assoc: Points to the associated data.82 * @assoc_len: Length of the associated data values.83 * @ctr: Points to the counter value.84 * @authtag: The output buffer for the authentication tag.85 *86 * It takes in the AES-GCM context, source data, associated data, counter value,87 * and an output buffer for the authentication tag.88 */89static void aesgcm_mac(const struct aesgcm_ctx *ctx, const u8 *src, int src_len,90 const u8 *assoc, int assoc_len, __be32 *ctr, u8 *authtag)91{92 be128 tail = { cpu_to_be64(assoc_len * 8), cpu_to_be64(src_len * 8) };93 u8 buf[AES_BLOCK_SIZE];94 be128 ghash = {};95 96 aesgcm_ghash(&ghash, &ctx->ghash_key, assoc, assoc_len);97 aesgcm_ghash(&ghash, &ctx->ghash_key, src, src_len);98 aesgcm_ghash(&ghash, &ctx->ghash_key, &tail, sizeof(tail));99 100 ctr[3] = cpu_to_be32(1);101 aesgcm_encrypt_block(&ctx->aes_ctx, buf, ctr);102 crypto_xor_cpy(authtag, buf, (u8 *)&ghash, ctx->authsize);103 104 memzero_explicit(&ghash, sizeof(ghash));105 memzero_explicit(buf, sizeof(buf));106}107 108static void aesgcm_crypt(const struct aesgcm_ctx *ctx, u8 *dst, const u8 *src,109 int len, __be32 *ctr)110{111 u8 buf[AES_BLOCK_SIZE];112 unsigned int n = 2;113 114 while (len > 0) {115 /*116 * The counter increment below must not result in overflow or117 * carry into the next 32-bit word, as this could result in118 * inadvertent IV reuse, which must be avoided at all cost for119 * stream ciphers such as AES-CTR. Given the range of 'int120 * len', this cannot happen, so no explicit test is necessary.121 */122 ctr[3] = cpu_to_be32(n++);123 aesgcm_encrypt_block(&ctx->aes_ctx, buf, ctr);124 crypto_xor_cpy(dst, src, buf, min(len, AES_BLOCK_SIZE));125 126 dst += AES_BLOCK_SIZE;127 src += AES_BLOCK_SIZE;128 len -= AES_BLOCK_SIZE;129 }130 memzero_explicit(buf, sizeof(buf));131}132 133/**134 * aesgcm_encrypt - Perform AES-GCM encryption on a block of data135 *136 * @ctx: The AES-GCM key schedule137 * @dst: Pointer to the ciphertext output buffer138 * @src: Pointer the plaintext (may equal @dst for encryption in place)139 * @crypt_len: The size in bytes of the plaintext and ciphertext.140 * @assoc: Pointer to the associated data,141 * @assoc_len: The size in bytes of the associated data142 * @iv: The initialization vector (IV) to use for this block of data143 * (must be 12 bytes in size as per the GCM spec recommendation)144 * @authtag: The address of the buffer in memory where the authentication145 * tag should be stored. The buffer is assumed to have space for146 * @ctx->authsize bytes.147 */148void aesgcm_encrypt(const struct aesgcm_ctx *ctx, u8 *dst, const u8 *src,149 int crypt_len, const u8 *assoc, int assoc_len,150 const u8 iv[GCM_AES_IV_SIZE], u8 *authtag)151{152 __be32 ctr[4];153 154 memcpy(ctr, iv, GCM_AES_IV_SIZE);155 156 aesgcm_crypt(ctx, dst, src, crypt_len, ctr);157 aesgcm_mac(ctx, dst, crypt_len, assoc, assoc_len, ctr, authtag);158}159EXPORT_SYMBOL(aesgcm_encrypt);160 161/**162 * aesgcm_decrypt - Perform AES-GCM decryption on a block of data163 *164 * @ctx: The AES-GCM key schedule165 * @dst: Pointer to the plaintext output buffer166 * @src: Pointer the ciphertext (may equal @dst for decryption in place)167 * @crypt_len: The size in bytes of the plaintext and ciphertext.168 * @assoc: Pointer to the associated data,169 * @assoc_len: The size in bytes of the associated data170 * @iv: The initialization vector (IV) to use for this block of data171 * (must be 12 bytes in size as per the GCM spec recommendation)172 * @authtag: The address of the buffer in memory where the authentication173 * tag is stored.174 *175 * Returns: true on success, or false if the ciphertext failed authentication.176 * On failure, no plaintext will be returned.177 */178bool __must_check aesgcm_decrypt(const struct aesgcm_ctx *ctx, u8 *dst,179 const u8 *src, int crypt_len, const u8 *assoc,180 int assoc_len, const u8 iv[GCM_AES_IV_SIZE],181 const u8 *authtag)182{183 u8 tagbuf[AES_BLOCK_SIZE];184 __be32 ctr[4];185 186 memcpy(ctr, iv, GCM_AES_IV_SIZE);187 188 aesgcm_mac(ctx, src, crypt_len, assoc, assoc_len, ctr, tagbuf);189 if (crypto_memneq(authtag, tagbuf, ctx->authsize)) {190 memzero_explicit(tagbuf, sizeof(tagbuf));191 return false;192 }193 aesgcm_crypt(ctx, dst, src, crypt_len, ctr);194 return true;195}196EXPORT_SYMBOL(aesgcm_decrypt);197 198MODULE_DESCRIPTION("Generic AES-GCM library");199MODULE_AUTHOR("Ard Biesheuvel <ardb@kernel.org>");200MODULE_LICENSE("GPL");201 202#ifndef CONFIG_CRYPTO_MANAGER_DISABLE_TESTS203 204/*205 * Test code below. Vectors taken from crypto/testmgr.h206 */207 208static const u8 __initconst ctext0[16] =209 "\x58\xe2\xfc\xce\xfa\x7e\x30\x61"210 "\x36\x7f\x1d\x57\xa4\xe7\x45\x5a";211 212static const u8 __initconst ptext1[16];213 214static const u8 __initconst ctext1[32] =215 "\x03\x88\xda\xce\x60\xb6\xa3\x92"216 "\xf3\x28\xc2\xb9\x71\xb2\xfe\x78"217 "\xab\x6e\x47\xd4\x2c\xec\x13\xbd"218 "\xf5\x3a\x67\xb2\x12\x57\xbd\xdf";219 220static const u8 __initconst ptext2[64] =221 "\xd9\x31\x32\x25\xf8\x84\x06\xe5"222 "\xa5\x59\x09\xc5\xaf\xf5\x26\x9a"223 "\x86\xa7\xa9\x53\x15\x34\xf7\xda"224 "\x2e\x4c\x30\x3d\x8a\x31\x8a\x72"225 "\x1c\x3c\x0c\x95\x95\x68\x09\x53"226 "\x2f\xcf\x0e\x24\x49\xa6\xb5\x25"227 "\xb1\x6a\xed\xf5\xaa\x0d\xe6\x57"228 "\xba\x63\x7b\x39\x1a\xaf\xd2\x55";229 230static const u8 __initconst ctext2[80] =231 "\x42\x83\x1e\xc2\x21\x77\x74\x24"232 "\x4b\x72\x21\xb7\x84\xd0\xd4\x9c"233 "\xe3\xaa\x21\x2f\x2c\x02\xa4\xe0"234 "\x35\xc1\x7e\x23\x29\xac\xa1\x2e"235 "\x21\xd5\x14\xb2\x54\x66\x93\x1c"236 "\x7d\x8f\x6a\x5a\xac\x84\xaa\x05"237 "\x1b\xa3\x0b\x39\x6a\x0a\xac\x97"238 "\x3d\x58\xe0\x91\x47\x3f\x59\x85"239 "\x4d\x5c\x2a\xf3\x27\xcd\x64\xa6"240 "\x2c\xf3\x5a\xbd\x2b\xa6\xfa\xb4";241 242static const u8 __initconst ptext3[60] =243 "\xd9\x31\x32\x25\xf8\x84\x06\xe5"244 "\xa5\x59\x09\xc5\xaf\xf5\x26\x9a"245 "\x86\xa7\xa9\x53\x15\x34\xf7\xda"246 "\x2e\x4c\x30\x3d\x8a\x31\x8a\x72"247 "\x1c\x3c\x0c\x95\x95\x68\x09\x53"248 "\x2f\xcf\x0e\x24\x49\xa6\xb5\x25"249 "\xb1\x6a\xed\xf5\xaa\x0d\xe6\x57"250 "\xba\x63\x7b\x39";251 252static const u8 __initconst ctext3[76] =253 "\x42\x83\x1e\xc2\x21\x77\x74\x24"254 "\x4b\x72\x21\xb7\x84\xd0\xd4\x9c"255 "\xe3\xaa\x21\x2f\x2c\x02\xa4\xe0"256 "\x35\xc1\x7e\x23\x29\xac\xa1\x2e"257 "\x21\xd5\x14\xb2\x54\x66\x93\x1c"258 "\x7d\x8f\x6a\x5a\xac\x84\xaa\x05"259 "\x1b\xa3\x0b\x39\x6a\x0a\xac\x97"260 "\x3d\x58\xe0\x91"261 "\x5b\xc9\x4f\xbc\x32\x21\xa5\xdb"262 "\x94\xfa\xe9\x5a\xe7\x12\x1a\x47";263 264static const u8 __initconst ctext4[16] =265 "\xcd\x33\xb2\x8a\xc7\x73\xf7\x4b"266 "\xa0\x0e\xd1\xf3\x12\x57\x24\x35";267 268static const u8 __initconst ctext5[32] =269 "\x98\xe7\x24\x7c\x07\xf0\xfe\x41"270 "\x1c\x26\x7e\x43\x84\xb0\xf6\x00"271 "\x2f\xf5\x8d\x80\x03\x39\x27\xab"272 "\x8e\xf4\xd4\x58\x75\x14\xf0\xfb";273 274static const u8 __initconst ptext6[64] =275 "\xd9\x31\x32\x25\xf8\x84\x06\xe5"276 "\xa5\x59\x09\xc5\xaf\xf5\x26\x9a"277 "\x86\xa7\xa9\x53\x15\x34\xf7\xda"278 "\x2e\x4c\x30\x3d\x8a\x31\x8a\x72"279 "\x1c\x3c\x0c\x95\x95\x68\x09\x53"280 "\x2f\xcf\x0e\x24\x49\xa6\xb5\x25"281 "\xb1\x6a\xed\xf5\xaa\x0d\xe6\x57"282 "\xba\x63\x7b\x39\x1a\xaf\xd2\x55";283 284static const u8 __initconst ctext6[80] =285 "\x39\x80\xca\x0b\x3c\x00\xe8\x41"286 "\xeb\x06\xfa\xc4\x87\x2a\x27\x57"287 "\x85\x9e\x1c\xea\xa6\xef\xd9\x84"288 "\x62\x85\x93\xb4\x0c\xa1\xe1\x9c"289 "\x7d\x77\x3d\x00\xc1\x44\xc5\x25"290 "\xac\x61\x9d\x18\xc8\x4a\x3f\x47"291 "\x18\xe2\x44\x8b\x2f\xe3\x24\xd9"292 "\xcc\xda\x27\x10\xac\xad\xe2\x56"293 "\x99\x24\xa7\xc8\x58\x73\x36\xbf"294 "\xb1\x18\x02\x4d\xb8\x67\x4a\x14";295 296static const u8 __initconst ctext7[16] =297 "\x53\x0f\x8a\xfb\xc7\x45\x36\xb9"298 "\xa9\x63\xb4\xf1\xc4\xcb\x73\x8b";299 300static const u8 __initconst ctext8[32] =301 "\xce\xa7\x40\x3d\x4d\x60\x6b\x6e"302 "\x07\x4e\xc5\xd3\xba\xf3\x9d\x18"303 "\xd0\xd1\xc8\xa7\x99\x99\x6b\xf0"304 "\x26\x5b\x98\xb5\xd4\x8a\xb9\x19";305 306static const u8 __initconst ptext9[64] =307 "\xd9\x31\x32\x25\xf8\x84\x06\xe5"308 "\xa5\x59\x09\xc5\xaf\xf5\x26\x9a"309 "\x86\xa7\xa9\x53\x15\x34\xf7\xda"310 "\x2e\x4c\x30\x3d\x8a\x31\x8a\x72"311 "\x1c\x3c\x0c\x95\x95\x68\x09\x53"312 "\x2f\xcf\x0e\x24\x49\xa6\xb5\x25"313 "\xb1\x6a\xed\xf5\xaa\x0d\xe6\x57"314 "\xba\x63\x7b\x39\x1a\xaf\xd2\x55";315 316static const u8 __initconst ctext9[80] =317 "\x52\x2d\xc1\xf0\x99\x56\x7d\x07"318 "\xf4\x7f\x37\xa3\x2a\x84\x42\x7d"319 "\x64\x3a\x8c\xdc\xbf\xe5\xc0\xc9"320 "\x75\x98\xa2\xbd\x25\x55\xd1\xaa"321 "\x8c\xb0\x8e\x48\x59\x0d\xbb\x3d"322 "\xa7\xb0\x8b\x10\x56\x82\x88\x38"323 "\xc5\xf6\x1e\x63\x93\xba\x7a\x0a"324 "\xbc\xc9\xf6\x62\x89\x80\x15\xad"325 "\xb0\x94\xda\xc5\xd9\x34\x71\xbd"326 "\xec\x1a\x50\x22\x70\xe3\xcc\x6c";327 328static const u8 __initconst ptext10[60] =329 "\xd9\x31\x32\x25\xf8\x84\x06\xe5"330 "\xa5\x59\x09\xc5\xaf\xf5\x26\x9a"331 "\x86\xa7\xa9\x53\x15\x34\xf7\xda"332 "\x2e\x4c\x30\x3d\x8a\x31\x8a\x72"333 "\x1c\x3c\x0c\x95\x95\x68\x09\x53"334 "\x2f\xcf\x0e\x24\x49\xa6\xb5\x25"335 "\xb1\x6a\xed\xf5\xaa\x0d\xe6\x57"336 "\xba\x63\x7b\x39";337 338static const u8 __initconst ctext10[76] =339 "\x52\x2d\xc1\xf0\x99\x56\x7d\x07"340 "\xf4\x7f\x37\xa3\x2a\x84\x42\x7d"341 "\x64\x3a\x8c\xdc\xbf\xe5\xc0\xc9"342 "\x75\x98\xa2\xbd\x25\x55\xd1\xaa"343 "\x8c\xb0\x8e\x48\x59\x0d\xbb\x3d"344 "\xa7\xb0\x8b\x10\x56\x82\x88\x38"345 "\xc5\xf6\x1e\x63\x93\xba\x7a\x0a"346 "\xbc\xc9\xf6\x62"347 "\x76\xfc\x6e\xce\x0f\x4e\x17\x68"348 "\xcd\xdf\x88\x53\xbb\x2d\x55\x1b";349 350static const u8 __initconst ptext11[60] =351 "\xd9\x31\x32\x25\xf8\x84\x06\xe5"352 "\xa5\x59\x09\xc5\xaf\xf5\x26\x9a"353 "\x86\xa7\xa9\x53\x15\x34\xf7\xda"354 "\x2e\x4c\x30\x3d\x8a\x31\x8a\x72"355 "\x1c\x3c\x0c\x95\x95\x68\x09\x53"356 "\x2f\xcf\x0e\x24\x49\xa6\xb5\x25"357 "\xb1\x6a\xed\xf5\xaa\x0d\xe6\x57"358 "\xba\x63\x7b\x39";359 360static const u8 __initconst ctext11[76] =361 "\x39\x80\xca\x0b\x3c\x00\xe8\x41"362 "\xeb\x06\xfa\xc4\x87\x2a\x27\x57"363 "\x85\x9e\x1c\xea\xa6\xef\xd9\x84"364 "\x62\x85\x93\xb4\x0c\xa1\xe1\x9c"365 "\x7d\x77\x3d\x00\xc1\x44\xc5\x25"366 "\xac\x61\x9d\x18\xc8\x4a\x3f\x47"367 "\x18\xe2\x44\x8b\x2f\xe3\x24\xd9"368 "\xcc\xda\x27\x10"369 "\x25\x19\x49\x8e\x80\xf1\x47\x8f"370 "\x37\xba\x55\xbd\x6d\x27\x61\x8c";371 372static const u8 __initconst ptext12[719] =373 "\x42\xc1\xcc\x08\x48\x6f\x41\x3f"374 "\x2f\x11\x66\x8b\x2a\x16\xf0\xe0"375 "\x58\x83\xf0\xc3\x70\x14\xc0\x5b"376 "\x3f\xec\x1d\x25\x3c\x51\xd2\x03"377 "\xcf\x59\x74\x1f\xb2\x85\xb4\x07"378 "\xc6\x6a\x63\x39\x8a\x5b\xde\xcb"379 "\xaf\x08\x44\xbd\x6f\x91\x15\xe1"380 "\xf5\x7a\x6e\x18\xbd\xdd\x61\x50"381 "\x59\xa9\x97\xab\xbb\x0e\x74\x5c"382 "\x00\xa4\x43\x54\x04\x54\x9b\x3b"383 "\x77\xec\xfd\x5c\xa6\xe8\x7b\x08"384 "\xae\xe6\x10\x3f\x32\x65\xd1\xfc"385 "\xa4\x1d\x2c\x31\xfb\x33\x7a\xb3"386 "\x35\x23\xf4\x20\x41\xd4\xad\x82"387 "\x8b\xa4\xad\x96\x1c\x20\x53\xbe"388 "\x0e\xa6\xf4\xdc\x78\x49\x3e\x72"389 "\xb1\xa9\xb5\x83\xcb\x08\x54\xb7"390 "\xad\x49\x3a\xae\x98\xce\xa6\x66"391 "\x10\x30\x90\x8c\x55\x83\xd7\x7c"392 "\x8b\xe6\x53\xde\xd2\x6e\x18\x21"393 "\x01\x52\xd1\x9f\x9d\xbb\x9c\x73"394 "\x57\xcc\x89\x09\x75\x9b\x78\x70"395 "\xed\x26\x97\x4d\xb4\xe4\x0c\xa5"396 "\xfa\x70\x04\x70\xc6\x96\x1c\x7d"397 "\x54\x41\x77\xa8\xe3\xb0\x7e\x96"398 "\x82\xd9\xec\xa2\x87\x68\x55\xf9"399 "\x8f\x9e\x73\x43\x47\x6a\x08\x36"400 "\x93\x67\xa8\x2d\xde\xac\x41\xa9"401 "\x5c\x4d\x73\x97\x0f\x70\x68\xfa"402 "\x56\x4d\x00\xc2\x3b\x1f\xc8\xb9"403 "\x78\x1f\x51\x07\xe3\x9a\x13\x4e"404 "\xed\x2b\x2e\xa3\xf7\x44\xb2\xe7"405 "\xab\x19\x37\xd9\xba\x76\x5e\xd2"406 "\xf2\x53\x15\x17\x4c\x6b\x16\x9f"407 "\x02\x66\x49\xca\x7c\x91\x05\xf2"408 "\x45\x36\x1e\xf5\x77\xad\x1f\x46"409 "\xa8\x13\xfb\x63\xb6\x08\x99\x63"410 "\x82\xa2\xed\xb3\xac\xdf\x43\x19"411 "\x45\xea\x78\x73\xd9\xb7\x39\x11"412 "\xa3\x13\x7c\xf8\x3f\xf7\xad\x81"413 "\x48\x2f\xa9\x5c\x5f\xa0\xf0\x79"414 "\xa4\x47\x7d\x80\x20\x26\xfd\x63"415 "\x0a\xc7\x7e\x6d\x75\x47\xff\x76"416 "\x66\x2e\x8a\x6c\x81\x35\xaf\x0b"417 "\x2e\x6a\x49\x60\xc1\x10\xe1\xe1"418 "\x54\x03\xa4\x09\x0c\x37\x7a\x15"419 "\x23\x27\x5b\x8b\x4b\xa5\x64\x97"420 "\xae\x4a\x50\x73\x1f\x66\x1c\x5c"421 "\x03\x25\x3c\x8d\x48\x58\x71\x34"422 "\x0e\xec\x4e\x55\x1a\x03\x6a\xe5"423 "\xb6\x19\x2b\x84\x2a\x20\xd1\xea"424 "\x80\x6f\x96\x0e\x05\x62\xc7\x78"425 "\x87\x79\x60\x38\x46\xb4\x25\x57"426 "\x6e\x16\x63\xf8\xad\x6e\xd7\x42"427 "\x69\xe1\x88\xef\x6e\xd5\xb4\x9a"428 "\x3c\x78\x6c\x3b\xe5\xa0\x1d\x22"429 "\x86\x5c\x74\x3a\xeb\x24\x26\xc7"430 "\x09\xfc\x91\x96\x47\x87\x4f\x1a"431 "\xd6\x6b\x2c\x18\x47\xc0\xb8\x24"432 "\xa8\x5a\x4a\x9e\xcb\x03\xe7\x2a"433 "\x09\xe6\x4d\x9c\x6d\x86\x60\xf5"434 "\x2f\x48\x69\x37\x9f\xf2\xd2\xcb"435 "\x0e\x5a\xdd\x6e\x8a\xfb\x6a\xfe"436 "\x0b\x63\xde\x87\x42\x79\x8a\x68"437 "\x51\x28\x9b\x7a\xeb\xaf\xb8\x2f"438 "\x9d\xd1\xc7\x45\x90\x08\xc9\x83"439 "\xe9\x83\x84\xcb\x28\x69\x09\x69"440 "\xce\x99\x46\x00\x54\xcb\xd8\x38"441 "\xf9\x53\x4a\xbf\x31\xce\x57\x15"442 "\x33\xfa\x96\x04\x33\x42\xe3\xc0"443 "\xb7\x54\x4a\x65\x7a\x7c\x02\xe6"444 "\x19\x95\xd0\x0e\x82\x07\x63\xf9"445 "\xe1\x2b\x2a\xfc\x55\x92\x52\xc9"446 "\xb5\x9f\x23\x28\x60\xe7\x20\x51"447 "\x10\xd3\xed\x6d\x9b\xab\xb8\xe2"448 "\x5d\x9a\x34\xb3\xbe\x9c\x64\xcb"449 "\x78\xc6\x91\x22\x40\x91\x80\xbe"450 "\xd7\x78\x5c\x0e\x0a\xdc\x08\xe9"451 "\x67\x10\xa4\x83\x98\x79\x23\xe7"452 "\x92\xda\xa9\x22\x16\xb1\xe7\x78"453 "\xa3\x1c\x6c\x8f\x35\x7c\x4d\x37"454 "\x2f\x6e\x0b\x50\x5c\x34\xb9\xf9"455 "\xe6\x3d\x91\x0d\x32\x95\xaa\x3d"456 "\x48\x11\x06\xbb\x2d\xf2\x63\x88"457 "\x3f\x73\x09\xe2\x45\x56\x31\x51"458 "\xfa\x5e\x4e\x62\xf7\x90\xf9\xa9"459 "\x7d\x7b\x1b\xb1\xc8\x26\x6e\x66"460 "\xf6\x90\x9a\x7f\xf2\x57\xcc\x23"461 "\x59\xfa\xfa\xaa\x44\x04\x01\xa7"462 "\xa4\x78\xdb\x74\x3d\x8b\xb5";463 464static const u8 __initconst ctext12[735] =465 "\x84\x0b\xdb\xd5\xb7\xa8\xfe\x20"466 "\xbb\xb1\x12\x7f\x41\xea\xb3\xc0"467 "\xa2\xb4\x37\x19\x11\x58\xb6\x0b"468 "\x4c\x1d\x38\x05\x54\xd1\x16\x73"469 "\x8e\x1c\x20\x90\xa2\x9a\xb7\x74"470 "\x47\xe6\xd8\xfc\x18\x3a\xb4\xea"471 "\xd5\x16\x5a\x2c\x53\x01\x46\xb3"472 "\x18\x33\x74\x6c\x50\xf2\xe8\xc0"473 "\x73\xda\x60\x22\xeb\xe3\xe5\x9b"474 "\x20\x93\x6c\x4b\x37\x99\xb8\x23"475 "\x3b\x4e\xac\xe8\x5b\xe8\x0f\xb7"476 "\xc3\x8f\xfb\x4a\x37\xd9\x39\x95"477 "\x34\xf1\xdb\x8f\x71\xd9\xc7\x0b"478 "\x02\xf1\x63\xfc\x9b\xfc\xc5\xab"479 "\xb9\x14\x13\x21\xdf\xce\xaa\x88"480 "\x44\x30\x1e\xce\x26\x01\x92\xf8"481 "\x9f\x00\x4b\x0c\x4b\xf7\x5f\xe0"482 "\x89\xca\x94\x66\x11\x21\x97\xca"483 "\x3e\x83\x74\x2d\xdb\x4d\x11\xeb"484 "\x97\xc2\x14\xff\x9e\x1e\xa0\x6b"485 "\x08\xb4\x31\x2b\x85\xc6\x85\x6c"486 "\x90\xec\x39\xc0\xec\xb3\xb5\x4e"487 "\xf3\x9c\xe7\x83\x3a\x77\x0a\xf4"488 "\x56\xfe\xce\x18\x33\x6d\x0b\x2d"489 "\x33\xda\xc8\x05\x5c\xb4\x09\x2a"490 "\xde\x6b\x52\x98\x01\xef\x36\x3d"491 "\xbd\xf9\x8f\xa8\x3e\xaa\xcd\xd1"492 "\x01\x2d\x42\x49\xc3\xb6\x84\xbb"493 "\x48\x96\xe0\x90\x93\x6c\x48\x64"494 "\xd4\xfa\x7f\x93\x2c\xa6\x21\xc8"495 "\x7a\x23\x7b\xaa\x20\x56\x12\xae"496 "\x16\x9d\x94\x0f\x54\xa1\xec\xca"497 "\x51\x4e\xf2\x39\xf4\xf8\x5f\x04"498 "\x5a\x0d\xbf\xf5\x83\xa1\x15\xe1"499 "\xf5\x3c\xd8\x62\xa3\xed\x47\x89"500 "\x85\x4c\xe5\xdb\xac\x9e\x17\x1d"501 "\x0c\x09\xe3\x3e\x39\x5b\x4d\x74"502 "\x0e\xf5\x34\xee\x70\x11\x4c\xfd"503 "\xdb\x34\xb1\xb5\x10\x3f\x73\xb7"504 "\xf5\xfa\xed\xb0\x1f\xa5\xcd\x3c"505 "\x8d\x35\x83\xd4\x11\x44\x6e\x6c"506 "\x5b\xe0\x0e\x69\xa5\x39\xe5\xbb"507 "\xa9\x57\x24\x37\xe6\x1f\xdd\xcf"508 "\x16\x2a\x13\xf9\x6a\x2d\x90\xa0"509 "\x03\x60\x7a\xed\x69\xd5\x00\x8b"510 "\x7e\x4f\xcb\xb9\xfa\x91\xb9\x37"511 "\xc1\x26\xce\x90\x97\x22\x64\x64"512 "\xc1\x72\x43\x1b\xf6\xac\xc1\x54"513 "\x8a\x10\x9c\xdd\x8d\xd5\x8e\xb2"514 "\xe4\x85\xda\xe0\x20\x5f\xf4\xb4"515 "\x15\xb5\xa0\x8d\x12\x74\x49\x23"516 "\x3a\xdf\x4a\xd3\xf0\x3b\x89\xeb"517 "\xf8\xcc\x62\x7b\xfb\x93\x07\x41"518 "\x61\x26\x94\x58\x70\xa6\x3c\xe4"519 "\xff\x58\xc4\x13\x3d\xcb\x36\x6b"520 "\x32\xe5\xb2\x6d\x03\x74\x6f\x76"521 "\x93\x77\xde\x48\xc4\xfa\x30\x4a"522 "\xda\x49\x80\x77\x0f\x1c\xbe\x11"523 "\xc8\x48\xb1\xe5\xbb\xf2\x8a\xe1"524 "\x96\x2f\x9f\xd1\x8e\x8a\x5c\xe2"525 "\xf7\xd7\xd8\x54\xf3\x3f\xc4\x91"526 "\xb8\xfb\x86\xdc\x46\x24\x91\x60"527 "\x6c\x2f\xc9\x41\x37\x51\x49\x54"528 "\x09\x81\x21\xf3\x03\x9f\x2b\xe3"529 "\x1f\x39\x63\xaf\xf4\xd7\x53\x60"530 "\xa7\xc7\x54\xf9\xee\xb1\xb1\x7d"531 "\x75\x54\x65\x93\xfe\xb1\x68\x6b"532 "\x57\x02\xf9\xbb\x0e\xf9\xf8\xbf"533 "\x01\x12\x27\xb4\xfe\xe4\x79\x7a"534 "\x40\x5b\x51\x4b\xdf\x38\xec\xb1"535 "\x6a\x56\xff\x35\x4d\x42\x33\xaa"536 "\x6f\x1b\xe4\xdc\xe0\xdb\x85\x35"537 "\x62\x10\xd4\xec\xeb\xc5\x7e\x45"538 "\x1c\x6f\x17\xca\x3b\x8e\x2d\x66"539 "\x4f\x4b\x36\x56\xcd\x1b\x59\xaa"540 "\xd2\x9b\x17\xb9\x58\xdf\x7b\x64"541 "\x8a\xff\x3b\x9c\xa6\xb5\x48\x9e"542 "\xaa\xe2\x5d\x09\x71\x32\x5f\xb6"543 "\x29\xbe\xe7\xc7\x52\x7e\x91\x82"544 "\x6b\x6d\x33\xe1\x34\x06\x36\x21"545 "\x5e\xbe\x1e\x2f\x3e\xc1\xfb\xea"546 "\x49\x2c\xb5\xca\xf7\xb0\x37\xea"547 "\x1f\xed\x10\x04\xd9\x48\x0d\x1a"548 "\x1c\xfb\xe7\x84\x0e\x83\x53\x74"549 "\xc7\x65\xe2\x5c\xe5\xba\x73\x4c"550 "\x0e\xe1\xb5\x11\x45\x61\x43\x46"551 "\xaa\x25\x8f\xbd\x85\x08\xfa\x4c"552 "\x15\xc1\xc0\xd8\xf5\xdc\x16\xbb"553 "\x7b\x1d\xe3\x87\x57\xa7\x2a\x1d"554 "\x38\x58\x9e\x8a\x43\xdc\x57"555 "\xd1\x81\x7d\x2b\xe9\xff\x99\x3a"556 "\x4b\x24\x52\x58\x55\xe1\x49\x14";557 558static struct {559 const u8 *ptext;560 const u8 *ctext;561 562 u8 key[AES_MAX_KEY_SIZE];563 u8 iv[GCM_AES_IV_SIZE];564 u8 assoc[20];565 566 int klen;567 int clen;568 int plen;569 int alen;570} const aesgcm_tv[] __initconst = {571 { /* From McGrew & Viega - http://citeseer.ist.psu.edu/656989.html */572 .klen = 16,573 .ctext = ctext0,574 .clen = sizeof(ctext0),575 }, {576 .klen = 16,577 .ptext = ptext1,578 .plen = sizeof(ptext1),579 .ctext = ctext1,580 .clen = sizeof(ctext1),581 }, {582 .key = "\xfe\xff\xe9\x92\x86\x65\x73\x1c"583 "\x6d\x6a\x8f\x94\x67\x30\x83\x08",584 .klen = 16,585 .iv = "\xca\xfe\xba\xbe\xfa\xce\xdb\xad"586 "\xde\xca\xf8\x88",587 .ptext = ptext2,588 .plen = sizeof(ptext2),589 .ctext = ctext2,590 .clen = sizeof(ctext2),591 }, {592 .key = "\xfe\xff\xe9\x92\x86\x65\x73\x1c"593 "\x6d\x6a\x8f\x94\x67\x30\x83\x08",594 .klen = 16,595 .iv = "\xca\xfe\xba\xbe\xfa\xce\xdb\xad"596 "\xde\xca\xf8\x88",597 .ptext = ptext3,598 .plen = sizeof(ptext3),599 .assoc = "\xfe\xed\xfa\xce\xde\xad\xbe\xef"600 "\xfe\xed\xfa\xce\xde\xad\xbe\xef"601 "\xab\xad\xda\xd2",602 .alen = 20,603 .ctext = ctext3,604 .clen = sizeof(ctext3),605 }, {606 .klen = 24,607 .ctext = ctext4,608 .clen = sizeof(ctext4),609 }, {610 .klen = 24,611 .ptext = ptext1,612 .plen = sizeof(ptext1),613 .ctext = ctext5,614 .clen = sizeof(ctext5),615 }, {616 .key = "\xfe\xff\xe9\x92\x86\x65\x73\x1c"617 "\x6d\x6a\x8f\x94\x67\x30\x83\x08"618 "\xfe\xff\xe9\x92\x86\x65\x73\x1c",619 .klen = 24,620 .iv = "\xca\xfe\xba\xbe\xfa\xce\xdb\xad"621 "\xde\xca\xf8\x88",622 .ptext = ptext6,623 .plen = sizeof(ptext6),624 .ctext = ctext6,625 .clen = sizeof(ctext6),626 }, {627 .klen = 32,628 .ctext = ctext7,629 .clen = sizeof(ctext7),630 }, {631 .klen = 32,632 .ptext = ptext1,633 .plen = sizeof(ptext1),634 .ctext = ctext8,635 .clen = sizeof(ctext8),636 }, {637 .key = "\xfe\xff\xe9\x92\x86\x65\x73\x1c"638 "\x6d\x6a\x8f\x94\x67\x30\x83\x08"639 "\xfe\xff\xe9\x92\x86\x65\x73\x1c"640 "\x6d\x6a\x8f\x94\x67\x30\x83\x08",641 .klen = 32,642 .iv = "\xca\xfe\xba\xbe\xfa\xce\xdb\xad"643 "\xde\xca\xf8\x88",644 .ptext = ptext9,645 .plen = sizeof(ptext9),646 .ctext = ctext9,647 .clen = sizeof(ctext9),648 }, {649 .key = "\xfe\xff\xe9\x92\x86\x65\x73\x1c"650 "\x6d\x6a\x8f\x94\x67\x30\x83\x08"651 "\xfe\xff\xe9\x92\x86\x65\x73\x1c"652 "\x6d\x6a\x8f\x94\x67\x30\x83\x08",653 .klen = 32,654 .iv = "\xca\xfe\xba\xbe\xfa\xce\xdb\xad"655 "\xde\xca\xf8\x88",656 .ptext = ptext10,657 .plen = sizeof(ptext10),658 .assoc = "\xfe\xed\xfa\xce\xde\xad\xbe\xef"659 "\xfe\xed\xfa\xce\xde\xad\xbe\xef"660 "\xab\xad\xda\xd2",661 .alen = 20,662 .ctext = ctext10,663 .clen = sizeof(ctext10),664 }, {665 .key = "\xfe\xff\xe9\x92\x86\x65\x73\x1c"666 "\x6d\x6a\x8f\x94\x67\x30\x83\x08"667 "\xfe\xff\xe9\x92\x86\x65\x73\x1c",668 .klen = 24,669 .iv = "\xca\xfe\xba\xbe\xfa\xce\xdb\xad"670 "\xde\xca\xf8\x88",671 .ptext = ptext11,672 .plen = sizeof(ptext11),673 .assoc = "\xfe\xed\xfa\xce\xde\xad\xbe\xef"674 "\xfe\xed\xfa\xce\xde\xad\xbe\xef"675 "\xab\xad\xda\xd2",676 .alen = 20,677 .ctext = ctext11,678 .clen = sizeof(ctext11),679 }, {680 .key = "\x62\x35\xf8\x95\xfc\xa5\xeb\xf6"681 "\x0e\x92\x12\x04\xd3\xa1\x3f\x2e"682 "\x8b\x32\xcf\xe7\x44\xed\x13\x59"683 "\x04\x38\x77\xb0\xb9\xad\xb4\x38",684 .klen = 32,685 .iv = "\x00\xff\xff\xff\xff\x00\x00\xff"686 "\xff\xff\x00\xff",687 .ptext = ptext12,688 .plen = sizeof(ptext12),689 .ctext = ctext12,690 .clen = sizeof(ctext12),691 }692};693 694static int __init libaesgcm_init(void)695{696 for (int i = 0; i < ARRAY_SIZE(aesgcm_tv); i++) {697 u8 tagbuf[AES_BLOCK_SIZE];698 int plen = aesgcm_tv[i].plen;699 struct aesgcm_ctx ctx;700 u8 buf[sizeof(ptext12)];701 702 if (aesgcm_expandkey(&ctx, aesgcm_tv[i].key, aesgcm_tv[i].klen,703 aesgcm_tv[i].clen - plen)) {704 pr_err("aesgcm_expandkey() failed on vector %d\n", i);705 return -ENODEV;706 }707 708 if (!aesgcm_decrypt(&ctx, buf, aesgcm_tv[i].ctext, plen,709 aesgcm_tv[i].assoc, aesgcm_tv[i].alen,710 aesgcm_tv[i].iv, aesgcm_tv[i].ctext + plen)711 || memcmp(buf, aesgcm_tv[i].ptext, plen)) {712 pr_err("aesgcm_decrypt() #1 failed on vector %d\n", i);713 return -ENODEV;714 }715 716 /* encrypt in place */717 aesgcm_encrypt(&ctx, buf, buf, plen, aesgcm_tv[i].assoc,718 aesgcm_tv[i].alen, aesgcm_tv[i].iv, tagbuf);719 if (memcmp(buf, aesgcm_tv[i].ctext, plen)) {720 pr_err("aesgcm_encrypt() failed on vector %d\n", i);721 return -ENODEV;722 }723 724 /* decrypt in place */725 if (!aesgcm_decrypt(&ctx, buf, buf, plen, aesgcm_tv[i].assoc,726 aesgcm_tv[i].alen, aesgcm_tv[i].iv, tagbuf)727 || memcmp(buf, aesgcm_tv[i].ptext, plen)) {728 pr_err("aesgcm_decrypt() #2 failed on vector %d\n", i);729 return -ENODEV;730 }731 }732 return 0;733}734module_init(libaesgcm_init);735 736static void __exit libaesgcm_exit(void)737{738}739module_exit(libaesgcm_exit);740#endif741