Lines Matching refs:drbg
195 static int drbg_uninstantiate(struct drbg_state *drbg);
242 static int drbg_fips_continuous_test(struct drbg_state *drbg, in drbg_fips_continuous_test() argument
245 unsigned short entropylen = drbg_sec_strength(drbg->core->flags); in drbg_fips_continuous_test()
252 if (list_empty(&drbg->test_data.list)) in drbg_fips_continuous_test()
258 if (!drbg->fips_primed) { in drbg_fips_continuous_test()
260 memcpy(drbg->prev, entropy, entropylen); in drbg_fips_continuous_test()
261 drbg->fips_primed = true; in drbg_fips_continuous_test()
265 ret = memcmp(drbg->prev, entropy, entropylen); in drbg_fips_continuous_test()
268 memcpy(drbg->prev, entropy, entropylen); in drbg_fips_continuous_test()
307 static void drbg_kcapi_symsetkey(struct drbg_state *drbg,
309 static int drbg_kcapi_sym(struct drbg_state *drbg, unsigned char *outval,
311 static int drbg_init_sym_kernel(struct drbg_state *drbg);
312 static int drbg_fini_sym_kernel(struct drbg_state *drbg);
313 static int drbg_kcapi_sym_ctr(struct drbg_state *drbg,
319 static int drbg_ctr_bcc(struct drbg_state *drbg, in drbg_ctr_bcc() argument
328 drbg_string_fill(&data, out, drbg_blocklen(drbg)); in drbg_ctr_bcc()
331 drbg_kcapi_symsetkey(drbg, key); in drbg_ctr_bcc()
338 if (drbg_blocklen(drbg) == cnt) { in drbg_ctr_bcc()
340 ret = drbg_kcapi_sym(drbg, out, &data); in drbg_ctr_bcc()
352 ret = drbg_kcapi_sym(drbg, out, &data); in drbg_ctr_bcc()
397 static int drbg_ctr_df(struct drbg_state *drbg, in drbg_ctr_df() argument
406 unsigned char *pad = df_data + drbg_statelen(drbg); in drbg_ctr_df()
407 unsigned char *iv = pad + drbg_blocklen(drbg); in drbg_ctr_df()
408 unsigned char *temp = iv + drbg_blocklen(drbg); in drbg_ctr_df()
424 memset(pad, 0, drbg_blocklen(drbg)); in drbg_ctr_df()
425 memset(iv, 0, drbg_blocklen(drbg)); in drbg_ctr_df()
442 padlen = (inputlen + sizeof(L_N) + 1) % (drbg_blocklen(drbg)); in drbg_ctr_df()
445 padlen = drbg_blocklen(drbg) - padlen; in drbg_ctr_df()
455 drbg_string_fill(&S1, iv, drbg_blocklen(drbg)); in drbg_ctr_df()
464 while (templen < (drbg_keylen(drbg) + (drbg_blocklen(drbg)))) { in drbg_ctr_df()
472 ret = drbg_ctr_bcc(drbg, temp + templen, K, &bcc_list); in drbg_ctr_df()
477 templen += drbg_blocklen(drbg); in drbg_ctr_df()
481 X = temp + (drbg_keylen(drbg)); in drbg_ctr_df()
482 drbg_string_fill(&cipherin, X, drbg_blocklen(drbg)); in drbg_ctr_df()
487 drbg_kcapi_symsetkey(drbg, temp); in drbg_ctr_df()
495 ret = drbg_kcapi_sym(drbg, X, &cipherin); in drbg_ctr_df()
498 blocklen = (drbg_blocklen(drbg) < in drbg_ctr_df()
500 drbg_blocklen(drbg) : in drbg_ctr_df()
510 memset(iv, 0, drbg_blocklen(drbg)); in drbg_ctr_df()
511 memset(temp, 0, drbg_statelen(drbg) + drbg_blocklen(drbg)); in drbg_ctr_df()
512 memset(pad, 0, drbg_blocklen(drbg)); in drbg_ctr_df()
531 static int drbg_ctr_update(struct drbg_state *drbg, struct list_head *seed, in drbg_ctr_update() argument
536 unsigned char *temp = drbg->scratchpad; in drbg_ctr_update()
537 unsigned char *df_data = drbg->scratchpad + drbg_statelen(drbg) + in drbg_ctr_update()
538 drbg_blocklen(drbg); in drbg_ctr_update()
541 memset(df_data, 0, drbg_statelen(drbg)); in drbg_ctr_update()
551 crypto_inc(drbg->V, drbg_blocklen(drbg)); in drbg_ctr_update()
553 ret = crypto_skcipher_setkey(drbg->ctr_handle, drbg->C, in drbg_ctr_update()
554 drbg_keylen(drbg)); in drbg_ctr_update()
561 ret = drbg_ctr_df(drbg, df_data, drbg_statelen(drbg), seed); in drbg_ctr_update()
566 ret = drbg_kcapi_sym_ctr(drbg, df_data, drbg_statelen(drbg), in drbg_ctr_update()
567 temp, drbg_statelen(drbg)); in drbg_ctr_update()
572 ret = crypto_skcipher_setkey(drbg->ctr_handle, temp, in drbg_ctr_update()
573 drbg_keylen(drbg)); in drbg_ctr_update()
577 memcpy(drbg->V, temp + drbg_keylen(drbg), drbg_blocklen(drbg)); in drbg_ctr_update()
579 crypto_inc(drbg->V, drbg_blocklen(drbg)); in drbg_ctr_update()
583 memset(temp, 0, drbg_statelen(drbg) + drbg_blocklen(drbg)); in drbg_ctr_update()
585 memset(df_data, 0, drbg_statelen(drbg)); in drbg_ctr_update()
594 static int drbg_ctr_generate(struct drbg_state *drbg, in drbg_ctr_generate() argument
603 ret = drbg_ctr_update(drbg, addtl, 2); in drbg_ctr_generate()
609 ret = drbg_kcapi_sym_ctr(drbg, NULL, 0, buf, len); in drbg_ctr_generate()
614 ret = drbg_ctr_update(drbg, NULL, 3); in drbg_ctr_generate()
634 static int drbg_kcapi_hash(struct drbg_state *drbg, unsigned char *outval,
636 static void drbg_kcapi_hmacsetkey(struct drbg_state *drbg,
638 static int drbg_init_hash_kernel(struct drbg_state *drbg);
639 static int drbg_fini_hash_kernel(struct drbg_state *drbg);
654 static int drbg_hmac_update(struct drbg_state *drbg, struct list_head *seed, in drbg_hmac_update() argument
665 memset(drbg->V, 1, drbg_statelen(drbg)); in drbg_hmac_update()
666 drbg_kcapi_hmacsetkey(drbg, drbg->C); in drbg_hmac_update()
669 drbg_string_fill(&seed1, drbg->V, drbg_statelen(drbg)); in drbg_hmac_update()
678 drbg_string_fill(&vdata, drbg->V, drbg_statelen(drbg)); in drbg_hmac_update()
687 ret = drbg_kcapi_hash(drbg, drbg->C, &seedlist); in drbg_hmac_update()
690 drbg_kcapi_hmacsetkey(drbg, drbg->C); in drbg_hmac_update()
693 ret = drbg_kcapi_hash(drbg, drbg->V, &vdatalist); in drbg_hmac_update()
706 static int drbg_hmac_generate(struct drbg_state *drbg, in drbg_hmac_generate() argument
718 ret = drbg_hmac_update(drbg, addtl, 1); in drbg_hmac_generate()
723 drbg_string_fill(&data, drbg->V, drbg_statelen(drbg)); in drbg_hmac_generate()
728 ret = drbg_kcapi_hash(drbg, drbg->V, &datalist); in drbg_hmac_generate()
731 outlen = (drbg_blocklen(drbg) < (buflen - len)) ? in drbg_hmac_generate()
732 drbg_blocklen(drbg) : (buflen - len); in drbg_hmac_generate()
735 memcpy(buf + len, drbg->V, outlen); in drbg_hmac_generate()
741 ret = drbg_hmac_update(drbg, addtl, 1); in drbg_hmac_generate()
743 ret = drbg_hmac_update(drbg, NULL, 1); in drbg_hmac_generate()
821 static int drbg_hash_df(struct drbg_state *drbg, in drbg_hash_df() argument
828 unsigned char *tmp = drbg->scratchpad + drbg_statelen(drbg); in drbg_hash_df()
843 ret = drbg_kcapi_hash(drbg, tmp, entropylist); in drbg_hash_df()
848 blocklen = (drbg_blocklen(drbg) < (outlen - len)) ? in drbg_hash_df()
849 drbg_blocklen(drbg) : (outlen - len); in drbg_hash_df()
855 memset(tmp, 0, drbg_blocklen(drbg)); in drbg_hash_df()
860 static int drbg_hash_update(struct drbg_state *drbg, struct list_head *seed, in drbg_hash_update() argument
867 unsigned char *V = drbg->scratchpad; in drbg_hash_update()
875 memcpy(V, drbg->V, drbg_statelen(drbg)); in drbg_hash_update()
878 drbg_string_fill(&data2, V, drbg_statelen(drbg)); in drbg_hash_update()
884 ret = drbg_hash_df(drbg, drbg->V, drbg_statelen(drbg), &datalist); in drbg_hash_update()
892 drbg_string_fill(&data2, drbg->V, drbg_statelen(drbg)); in drbg_hash_update()
895 ret = drbg_hash_df(drbg, drbg->C, drbg_statelen(drbg), &datalist2); in drbg_hash_update()
898 memset(drbg->scratchpad, 0, drbg_statelen(drbg)); in drbg_hash_update()
903 static int drbg_hash_process_addtl(struct drbg_state *drbg, in drbg_hash_process_addtl() argument
917 drbg_string_fill(&data2, drbg->V, drbg_statelen(drbg)); in drbg_hash_process_addtl()
921 ret = drbg_kcapi_hash(drbg, drbg->scratchpad, &datalist); in drbg_hash_process_addtl()
926 drbg_add_buf(drbg->V, drbg_statelen(drbg), in drbg_hash_process_addtl()
927 drbg->scratchpad, drbg_blocklen(drbg)); in drbg_hash_process_addtl()
930 memset(drbg->scratchpad, 0, drbg_blocklen(drbg)); in drbg_hash_process_addtl()
935 static int drbg_hash_hashgen(struct drbg_state *drbg, in drbg_hash_hashgen() argument
941 unsigned char *src = drbg->scratchpad; in drbg_hash_hashgen()
942 unsigned char *dst = drbg->scratchpad + drbg_statelen(drbg); in drbg_hash_hashgen()
947 memcpy(src, drbg->V, drbg_statelen(drbg)); in drbg_hash_hashgen()
949 drbg_string_fill(&data, src, drbg_statelen(drbg)); in drbg_hash_hashgen()
954 ret = drbg_kcapi_hash(drbg, dst, &datalist); in drbg_hash_hashgen()
959 outlen = (drbg_blocklen(drbg) < (buflen - len)) ? in drbg_hash_hashgen()
960 drbg_blocklen(drbg) : (buflen - len); in drbg_hash_hashgen()
966 crypto_inc(src, drbg_statelen(drbg)); in drbg_hash_hashgen()
970 memset(drbg->scratchpad, 0, in drbg_hash_hashgen()
971 (drbg_statelen(drbg) + drbg_blocklen(drbg))); in drbg_hash_hashgen()
976 static int drbg_hash_generate(struct drbg_state *drbg, in drbg_hash_generate() argument
991 ret = drbg_hash_process_addtl(drbg, addtl); in drbg_hash_generate()
995 len = drbg_hash_hashgen(drbg, buf, buflen); in drbg_hash_generate()
1001 drbg_string_fill(&data2, drbg->V, drbg_statelen(drbg)); in drbg_hash_generate()
1003 ret = drbg_kcapi_hash(drbg, drbg->scratchpad, &datalist); in drbg_hash_generate()
1010 drbg_add_buf(drbg->V, drbg_statelen(drbg), in drbg_hash_generate()
1011 drbg->scratchpad, drbg_blocklen(drbg)); in drbg_hash_generate()
1012 drbg_add_buf(drbg->V, drbg_statelen(drbg), in drbg_hash_generate()
1013 drbg->C, drbg_statelen(drbg)); in drbg_hash_generate()
1014 u.req_int = cpu_to_be64(drbg->reseed_ctr); in drbg_hash_generate()
1015 drbg_add_buf(drbg->V, drbg_statelen(drbg), u.req, 8); in drbg_hash_generate()
1018 memset(drbg->scratchpad, 0, drbg_blocklen(drbg)); in drbg_hash_generate()
1038 static inline int __drbg_seed(struct drbg_state *drbg, struct list_head *seed, in __drbg_seed() argument
1041 int ret = drbg->d_ops->update(drbg, seed, reseed); in __drbg_seed()
1046 drbg->seeded = new_seed_state; in __drbg_seed()
1048 drbg->reseed_ctr = 1; in __drbg_seed()
1050 switch (drbg->seeded) { in __drbg_seed()
1059 drbg->reseed_threshold = 50; in __drbg_seed()
1067 drbg->reseed_threshold = drbg_max_requests(drbg); in __drbg_seed()
1074 static inline int drbg_get_random_bytes(struct drbg_state *drbg, in drbg_get_random_bytes() argument
1082 ret = drbg_fips_continuous_test(drbg, entropy); in drbg_get_random_bytes()
1090 static int drbg_seed_from_random(struct drbg_state *drbg) in drbg_seed_from_random() argument
1094 unsigned int entropylen = drbg_sec_strength(drbg->core->flags); in drbg_seed_from_random()
1104 ret = drbg_get_random_bytes(drbg, entropy, entropylen); in drbg_seed_from_random()
1108 ret = __drbg_seed(drbg, &seedlist, true, DRBG_SEED_STATE_FULL); in drbg_seed_from_random()
1126 static int drbg_seed(struct drbg_state *drbg, struct drbg_string *pers, in drbg_seed() argument
1131 unsigned int entropylen = drbg_sec_strength(drbg->core->flags); in drbg_seed()
1137 if (pers && pers->len > (drbg_max_addtl(drbg))) { in drbg_seed()
1143 if (list_empty(&drbg->test_data.list)) { in drbg_seed()
1144 drbg_string_fill(&data1, drbg->test_data.buf, in drbg_seed()
1145 drbg->test_data.len); in drbg_seed()
1165 ret = drbg_get_random_bytes(drbg, entropy, entropylen); in drbg_seed()
1169 if (!drbg->jent) { in drbg_seed()
1175 ret = crypto_rng_get_bytes(drbg->jent, in drbg_seed()
1217 memset(drbg->V, 0, drbg_statelen(drbg)); in drbg_seed()
1218 memset(drbg->C, 0, drbg_statelen(drbg)); in drbg_seed()
1221 ret = __drbg_seed(drbg, &seedlist, reseed, new_seed_state); in drbg_seed()
1230 static inline void drbg_dealloc_state(struct drbg_state *drbg) in drbg_dealloc_state() argument
1232 if (!drbg) in drbg_dealloc_state()
1234 kfree_sensitive(drbg->Vbuf); in drbg_dealloc_state()
1235 drbg->Vbuf = NULL; in drbg_dealloc_state()
1236 drbg->V = NULL; in drbg_dealloc_state()
1237 kfree_sensitive(drbg->Cbuf); in drbg_dealloc_state()
1238 drbg->Cbuf = NULL; in drbg_dealloc_state()
1239 drbg->C = NULL; in drbg_dealloc_state()
1240 kfree_sensitive(drbg->scratchpadbuf); in drbg_dealloc_state()
1241 drbg->scratchpadbuf = NULL; in drbg_dealloc_state()
1242 drbg->reseed_ctr = 0; in drbg_dealloc_state()
1243 drbg->d_ops = NULL; in drbg_dealloc_state()
1244 drbg->core = NULL; in drbg_dealloc_state()
1246 kfree_sensitive(drbg->prev); in drbg_dealloc_state()
1247 drbg->prev = NULL; in drbg_dealloc_state()
1248 drbg->fips_primed = false; in drbg_dealloc_state()
1256 static inline int drbg_alloc_state(struct drbg_state *drbg) in drbg_alloc_state() argument
1261 switch (drbg->core->flags & DRBG_TYPE_MASK) { in drbg_alloc_state()
1264 drbg->d_ops = &drbg_hmac_ops; in drbg_alloc_state()
1269 drbg->d_ops = &drbg_hash_ops; in drbg_alloc_state()
1274 drbg->d_ops = &drbg_ctr_ops; in drbg_alloc_state()
1282 ret = drbg->d_ops->crypto_init(drbg); in drbg_alloc_state()
1286 drbg->Vbuf = kmalloc(drbg_statelen(drbg) + ret, GFP_KERNEL); in drbg_alloc_state()
1287 if (!drbg->Vbuf) { in drbg_alloc_state()
1291 drbg->V = PTR_ALIGN(drbg->Vbuf, ret + 1); in drbg_alloc_state()
1292 drbg->Cbuf = kmalloc(drbg_statelen(drbg) + ret, GFP_KERNEL); in drbg_alloc_state()
1293 if (!drbg->Cbuf) { in drbg_alloc_state()
1297 drbg->C = PTR_ALIGN(drbg->Cbuf, ret + 1); in drbg_alloc_state()
1299 if (drbg->core->flags & DRBG_HMAC) in drbg_alloc_state()
1301 else if (drbg->core->flags & DRBG_CTR) in drbg_alloc_state()
1302 sb_size = drbg_statelen(drbg) + drbg_blocklen(drbg) + /* temp */ in drbg_alloc_state()
1303 drbg_statelen(drbg) + /* df_data */ in drbg_alloc_state()
1304 drbg_blocklen(drbg) + /* pad */ in drbg_alloc_state()
1305 drbg_blocklen(drbg) + /* iv */ in drbg_alloc_state()
1306 drbg_statelen(drbg) + drbg_blocklen(drbg); /* temp */ in drbg_alloc_state()
1308 sb_size = drbg_statelen(drbg) + drbg_blocklen(drbg); in drbg_alloc_state()
1311 drbg->scratchpadbuf = kzalloc(sb_size + ret, GFP_KERNEL); in drbg_alloc_state()
1312 if (!drbg->scratchpadbuf) { in drbg_alloc_state()
1316 drbg->scratchpad = PTR_ALIGN(drbg->scratchpadbuf, ret + 1); in drbg_alloc_state()
1320 drbg->prev = kzalloc(drbg_sec_strength(drbg->core->flags), in drbg_alloc_state()
1322 if (!drbg->prev) { in drbg_alloc_state()
1326 drbg->fips_primed = false; in drbg_alloc_state()
1332 drbg->d_ops->crypto_fini(drbg); in drbg_alloc_state()
1334 drbg_dealloc_state(drbg); in drbg_alloc_state()
1358 static int drbg_generate(struct drbg_state *drbg, in drbg_generate() argument
1365 if (!drbg->core) { in drbg_generate()
1380 if (buflen > (drbg_max_request_bytes(drbg))) { in drbg_generate()
1389 if (addtl && addtl->len > (drbg_max_addtl(drbg))) { in drbg_generate()
1400 if (drbg->reseed_threshold < drbg->reseed_ctr) in drbg_generate()
1401 drbg->seeded = DRBG_SEED_STATE_UNSEEDED; in drbg_generate()
1403 if (drbg->pr || drbg->seeded == DRBG_SEED_STATE_UNSEEDED) { in drbg_generate()
1406 drbg->pr ? "true" : "false", in drbg_generate()
1407 (drbg->seeded == DRBG_SEED_STATE_FULL ? in drbg_generate()
1410 len = drbg_seed(drbg, addtl, true); in drbg_generate()
1416 drbg->seeded == DRBG_SEED_STATE_PARTIAL) { in drbg_generate()
1417 len = drbg_seed_from_random(drbg); in drbg_generate()
1425 len = drbg->d_ops->generate(drbg, buf, buflen, &addtllist); in drbg_generate()
1428 drbg->reseed_ctr++; in drbg_generate()
1448 if (drbg->reseed_ctr && !(drbg->reseed_ctr % 4096)) { in drbg_generate()
1451 if (drbg->core->flags & DRBG_HMAC) in drbg_generate()
1454 else if (drbg->core->flags & DRBG_CTR) in drbg_generate()
1466 drbg_uninstantiate(drbg); in drbg_generate()
1491 static int drbg_generate_long(struct drbg_state *drbg, in drbg_generate_long() argument
1500 slice = ((buflen - len) / drbg_max_request_bytes(drbg)); in drbg_generate_long()
1501 chunk = slice ? drbg_max_request_bytes(drbg) : (buflen - len); in drbg_generate_long()
1502 mutex_lock(&drbg->drbg_mutex); in drbg_generate_long()
1503 err = drbg_generate(drbg, buf + len, chunk, addtl); in drbg_generate_long()
1504 mutex_unlock(&drbg->drbg_mutex); in drbg_generate_long()
1512 static int drbg_prepare_hrng(struct drbg_state *drbg) in drbg_prepare_hrng() argument
1515 if (list_empty(&drbg->test_data.list)) in drbg_prepare_hrng()
1518 drbg->jent = crypto_alloc_rng("jitterentropy_rng", 0, 0); in drbg_prepare_hrng()
1540 static int drbg_instantiate(struct drbg_state *drbg, struct drbg_string *pers, in drbg_instantiate() argument
1548 mutex_lock(&drbg->drbg_mutex); in drbg_instantiate()
1560 if (!drbg->core) { in drbg_instantiate()
1561 drbg->core = &drbg_cores[coreref]; in drbg_instantiate()
1562 drbg->pr = pr; in drbg_instantiate()
1563 drbg->seeded = DRBG_SEED_STATE_UNSEEDED; in drbg_instantiate()
1564 drbg->reseed_threshold = drbg_max_requests(drbg); in drbg_instantiate()
1566 ret = drbg_alloc_state(drbg); in drbg_instantiate()
1570 ret = drbg_prepare_hrng(drbg); in drbg_instantiate()
1574 if (IS_ERR(drbg->jent)) { in drbg_instantiate()
1575 ret = PTR_ERR(drbg->jent); in drbg_instantiate()
1576 drbg->jent = NULL; in drbg_instantiate()
1585 ret = drbg_seed(drbg, pers, reseed); in drbg_instantiate()
1590 mutex_unlock(&drbg->drbg_mutex); in drbg_instantiate()
1594 mutex_unlock(&drbg->drbg_mutex); in drbg_instantiate()
1598 mutex_unlock(&drbg->drbg_mutex); in drbg_instantiate()
1599 drbg_uninstantiate(drbg); in drbg_instantiate()
1612 static int drbg_uninstantiate(struct drbg_state *drbg) in drbg_uninstantiate() argument
1614 if (!IS_ERR_OR_NULL(drbg->jent)) in drbg_uninstantiate()
1615 crypto_free_rng(drbg->jent); in drbg_uninstantiate()
1616 drbg->jent = NULL; in drbg_uninstantiate()
1618 if (drbg->d_ops) in drbg_uninstantiate()
1619 drbg->d_ops->crypto_fini(drbg); in drbg_uninstantiate()
1620 drbg_dealloc_state(drbg); in drbg_uninstantiate()
1635 struct drbg_state *drbg = crypto_rng_ctx(tfm); in drbg_kcapi_set_entropy() local
1637 mutex_lock(&drbg->drbg_mutex); in drbg_kcapi_set_entropy()
1638 drbg_string_fill(&drbg->test_data, data, len); in drbg_kcapi_set_entropy()
1639 mutex_unlock(&drbg->drbg_mutex); in drbg_kcapi_set_entropy()
1652 static int drbg_init_hash_kernel(struct drbg_state *drbg) in drbg_init_hash_kernel() argument
1657 tfm = crypto_alloc_shash(drbg->core->backend_cra_name, 0, 0); in drbg_init_hash_kernel()
1660 drbg->core->backend_cra_name); in drbg_init_hash_kernel()
1663 BUG_ON(drbg_blocklen(drbg) != crypto_shash_digestsize(tfm)); in drbg_init_hash_kernel()
1672 drbg->priv_data = sdesc; in drbg_init_hash_kernel()
1677 static int drbg_fini_hash_kernel(struct drbg_state *drbg) in drbg_fini_hash_kernel() argument
1679 struct sdesc *sdesc = (struct sdesc *)drbg->priv_data; in drbg_fini_hash_kernel()
1684 drbg->priv_data = NULL; in drbg_fini_hash_kernel()
1688 static void drbg_kcapi_hmacsetkey(struct drbg_state *drbg, in drbg_kcapi_hmacsetkey() argument
1691 struct sdesc *sdesc = (struct sdesc *)drbg->priv_data; in drbg_kcapi_hmacsetkey()
1693 crypto_shash_setkey(sdesc->shash.tfm, key, drbg_statelen(drbg)); in drbg_kcapi_hmacsetkey()
1696 static int drbg_kcapi_hash(struct drbg_state *drbg, unsigned char *outval, in drbg_kcapi_hash() argument
1699 struct sdesc *sdesc = (struct sdesc *)drbg->priv_data; in drbg_kcapi_hash()
1710 static int drbg_fini_sym_kernel(struct drbg_state *drbg) in drbg_fini_sym_kernel() argument
1713 (struct crypto_cipher *)drbg->priv_data; in drbg_fini_sym_kernel()
1716 drbg->priv_data = NULL; in drbg_fini_sym_kernel()
1718 if (drbg->ctr_handle) in drbg_fini_sym_kernel()
1719 crypto_free_skcipher(drbg->ctr_handle); in drbg_fini_sym_kernel()
1720 drbg->ctr_handle = NULL; in drbg_fini_sym_kernel()
1722 if (drbg->ctr_req) in drbg_fini_sym_kernel()
1723 skcipher_request_free(drbg->ctr_req); in drbg_fini_sym_kernel()
1724 drbg->ctr_req = NULL; in drbg_fini_sym_kernel()
1726 kfree(drbg->outscratchpadbuf); in drbg_fini_sym_kernel()
1727 drbg->outscratchpadbuf = NULL; in drbg_fini_sym_kernel()
1732 static int drbg_init_sym_kernel(struct drbg_state *drbg) in drbg_init_sym_kernel() argument
1740 tfm = crypto_alloc_cipher(drbg->core->backend_cra_name, 0, 0); in drbg_init_sym_kernel()
1743 drbg->core->backend_cra_name); in drbg_init_sym_kernel()
1746 BUG_ON(drbg_blocklen(drbg) != crypto_cipher_blocksize(tfm)); in drbg_init_sym_kernel()
1747 drbg->priv_data = tfm; in drbg_init_sym_kernel()
1750 drbg->core->backend_cra_name) >= CRYPTO_MAX_ALG_NAME) { in drbg_init_sym_kernel()
1751 drbg_fini_sym_kernel(drbg); in drbg_init_sym_kernel()
1758 drbg_fini_sym_kernel(drbg); in drbg_init_sym_kernel()
1761 drbg->ctr_handle = sk_tfm; in drbg_init_sym_kernel()
1762 crypto_init_wait(&drbg->ctr_wait); in drbg_init_sym_kernel()
1767 drbg_fini_sym_kernel(drbg); in drbg_init_sym_kernel()
1770 drbg->ctr_req = req; in drbg_init_sym_kernel()
1773 crypto_req_done, &drbg->ctr_wait); in drbg_init_sym_kernel()
1776 drbg->outscratchpadbuf = kmalloc(DRBG_OUTSCRATCHLEN + alignmask, in drbg_init_sym_kernel()
1778 if (!drbg->outscratchpadbuf) { in drbg_init_sym_kernel()
1779 drbg_fini_sym_kernel(drbg); in drbg_init_sym_kernel()
1782 drbg->outscratchpad = (u8 *)PTR_ALIGN(drbg->outscratchpadbuf, in drbg_init_sym_kernel()
1785 sg_init_table(&drbg->sg_in, 1); in drbg_init_sym_kernel()
1786 sg_init_one(&drbg->sg_out, drbg->outscratchpad, DRBG_OUTSCRATCHLEN); in drbg_init_sym_kernel()
1791 static void drbg_kcapi_symsetkey(struct drbg_state *drbg, in drbg_kcapi_symsetkey() argument
1795 (struct crypto_cipher *)drbg->priv_data; in drbg_kcapi_symsetkey()
1797 crypto_cipher_setkey(tfm, key, (drbg_keylen(drbg))); in drbg_kcapi_symsetkey()
1800 static int drbg_kcapi_sym(struct drbg_state *drbg, unsigned char *outval, in drbg_kcapi_sym() argument
1804 (struct crypto_cipher *)drbg->priv_data; in drbg_kcapi_sym()
1807 BUG_ON(in->len < drbg_blocklen(drbg)); in drbg_kcapi_sym()
1812 static int drbg_kcapi_sym_ctr(struct drbg_state *drbg, in drbg_kcapi_sym_ctr() argument
1816 struct scatterlist *sg_in = &drbg->sg_in, *sg_out = &drbg->sg_out; in drbg_kcapi_sym_ctr()
1826 memset(drbg->outscratchpad, 0, scratchpad_use); in drbg_kcapi_sym_ctr()
1827 sg_set_buf(sg_in, drbg->outscratchpad, scratchpad_use); in drbg_kcapi_sym_ctr()
1834 skcipher_request_set_crypt(drbg->ctr_req, sg_in, sg_out, in drbg_kcapi_sym_ctr()
1835 cryptlen, drbg->V); in drbg_kcapi_sym_ctr()
1836 ret = crypto_wait_req(crypto_skcipher_encrypt(drbg->ctr_req), in drbg_kcapi_sym_ctr()
1837 &drbg->ctr_wait); in drbg_kcapi_sym_ctr()
1841 crypto_init_wait(&drbg->ctr_wait); in drbg_kcapi_sym_ctr()
1843 memcpy(outbuf, drbg->outscratchpad, cryptlen); in drbg_kcapi_sym_ctr()
1844 memzero_explicit(drbg->outscratchpad, cryptlen); in drbg_kcapi_sym_ctr()
1902 struct drbg_state *drbg = crypto_tfm_ctx(tfm); in drbg_kcapi_init() local
1904 mutex_init(&drbg->drbg_mutex); in drbg_kcapi_init()
1927 struct drbg_state *drbg = crypto_rng_ctx(tfm); in drbg_kcapi_random() local
1937 return drbg_generate_long(drbg, dst, dlen, addtl); in drbg_kcapi_random()
1946 struct drbg_state *drbg = crypto_rng_ctx(tfm); in drbg_kcapi_seed() local
1960 return drbg_instantiate(drbg, seed_string, coreref, pr); in drbg_kcapi_seed()
1982 struct drbg_state *drbg = NULL; in drbg_healthcheck_sanity() local
2002 drbg = kzalloc(sizeof(struct drbg_state), GFP_KERNEL); in drbg_healthcheck_sanity()
2003 if (!drbg) in drbg_healthcheck_sanity()
2006 mutex_init(&drbg->drbg_mutex); in drbg_healthcheck_sanity()
2007 drbg->core = &drbg_cores[coreref]; in drbg_healthcheck_sanity()
2008 drbg->reseed_threshold = drbg_max_requests(drbg); in drbg_healthcheck_sanity()
2018 max_addtllen = drbg_max_addtl(drbg); in drbg_healthcheck_sanity()
2019 max_request_bytes = drbg_max_request_bytes(drbg); in drbg_healthcheck_sanity()
2022 len = drbg_generate(drbg, buf, OUTBUFLEN, &addtl); in drbg_healthcheck_sanity()
2025 len = drbg_generate(drbg, buf, (max_request_bytes + 1), NULL); in drbg_healthcheck_sanity()
2029 ret = drbg_seed(drbg, &addtl, false); in drbg_healthcheck_sanity()
2037 kfree(drbg); in drbg_healthcheck_sanity()