diff options
| -rw-r--r-- | crypto/testmgr.c | 402 |
1 files changed, 335 insertions, 67 deletions
diff --git a/crypto/testmgr.c b/crypto/testmgr.c index c9e67c2bd725..a347be142323 100644 --- a/crypto/testmgr.c +++ b/crypto/testmgr.c @@ -1037,6 +1037,205 @@ static void crypto_reenable_simd_for_test(void) } #endif /* !CONFIG_CRYPTO_MANAGER_EXTRA_TESTS */ +static int build_hash_sglist(struct test_sglist *tsgl, + const struct hash_testvec *vec, + const struct testvec_config *cfg, + unsigned int alignmask, + const struct test_sg_division *divs[XBUFSIZE]) +{ + struct kvec kv; + struct iov_iter input; + + kv.iov_base = (void *)vec->plaintext; + kv.iov_len = vec->psize; + iov_iter_kvec(&input, WRITE, &kv, 1, vec->psize); + return build_test_sglist(tsgl, cfg->src_divs, alignmask, vec->psize, + &input, divs); +} + +static int check_hash_result(const char *type, + const u8 *result, unsigned int digestsize, + const struct hash_testvec *vec, + const char *vec_name, + const char *driver, + const struct testvec_config *cfg) +{ + if (memcmp(result, vec->digest, digestsize) != 0) { + pr_err("alg: %s: %s test failed (wrong result) on test vector %s, cfg=\"%s\"\n", + type, driver, vec_name, cfg->name); + return -EINVAL; + } + if (!testmgr_is_poison(&result[digestsize], TESTMGR_POISON_LEN)) { + pr_err("alg: %s: %s overran result buffer on test vector %s, cfg=\"%s\"\n", + type, driver, vec_name, cfg->name); + return -EOVERFLOW; + } + return 0; +} + +static inline int check_shash_op(const char *op, int err, + const char *driver, const char *vec_name, + const struct testvec_config *cfg) +{ + if (err) + pr_err("alg: shash: %s %s() failed with err %d on test vector %s, cfg=\"%s\"\n", + driver, op, err, vec_name, cfg->name); + return err; +} + +static inline const void *sg_data(struct scatterlist *sg) +{ + return page_address(sg_page(sg)) + sg->offset; +} + +/* Test one hash test vector in one configuration, using the shash API */ +static int test_shash_vec_cfg(const char *driver, + const struct hash_testvec *vec, + const char *vec_name, + const struct testvec_config *cfg, + struct shash_desc *desc, + struct test_sglist *tsgl, + u8 *hashstate) +{ + struct crypto_shash *tfm = desc->tfm; + const unsigned int alignmask = crypto_shash_alignmask(tfm); + const unsigned int digestsize = crypto_shash_digestsize(tfm); + const unsigned int statesize = crypto_shash_statesize(tfm); + const struct test_sg_division *divs[XBUFSIZE]; + unsigned int i; + u8 result[HASH_MAX_DIGESTSIZE + TESTMGR_POISON_LEN]; + int err; + + /* Set the key, if specified */ + if (vec->ksize) { + err = crypto_shash_setkey(tfm, vec->key, vec->ksize); + if (err) { + if (err == vec->setkey_error) + return 0; + pr_err("alg: shash: %s setkey failed on test vector %s; expected_error=%d, actual_error=%d, flags=%#x\n", + driver, vec_name, vec->setkey_error, err, + crypto_shash_get_flags(tfm)); + return err; + } + if (vec->setkey_error) { + pr_err("alg: shash: %s setkey unexpectedly succeeded on test vector %s; expected_error=%d\n", + driver, vec_name, vec->setkey_error); + return -EINVAL; + } + } + + /* Build the scatterlist for the source data */ + err = build_hash_sglist(tsgl, vec, cfg, alignmask, divs); + if (err) { + pr_err("alg: shash: %s: error preparing scatterlist for test vector %s, cfg=\"%s\"\n", + driver, vec_name, cfg->name); + return err; + } + + /* Do the actual hashing */ + + testmgr_poison(desc->__ctx, crypto_shash_descsize(tfm)); + testmgr_poison(result, digestsize + TESTMGR_POISON_LEN); + + if (cfg->finalization_type == FINALIZATION_TYPE_DIGEST || + vec->digest_error) { + /* Just using digest() */ + if (tsgl->nents != 1) + return 0; + if (cfg->nosimd) + crypto_disable_simd_for_test(); + err = crypto_shash_digest(desc, sg_data(&tsgl->sgl[0]), + tsgl->sgl[0].length, result); + if (cfg->nosimd) + crypto_reenable_simd_for_test(); + if (err) { + if (err == vec->digest_error) + return 0; + pr_err("alg: shash: %s digest() failed on test vector %s; expected_error=%d, actual_error=%d, cfg=\"%s\"\n", + driver, vec_name, vec->digest_error, err, + cfg->name); + return err; + } + if (vec->digest_error) { + pr_err("alg: shash: %s digest() unexpectedly succeeded on test vector %s; expected_error=%d, cfg=\"%s\"\n", + driver, vec_name, vec->digest_error, cfg->name); + return -EINVAL; + } + goto result_ready; + } + + /* Using init(), zero or more update(), then final() or finup() */ + + if (cfg->nosimd) + crypto_disable_simd_for_test(); + err = crypto_shash_init(desc); + if (cfg->nosimd) + crypto_reenable_simd_for_test(); + err = check_shash_op("init", err, driver, vec_name, cfg); + if (err) + return err; + + for (i = 0; i < tsgl->nents; i++) { + if (i + 1 == tsgl->nents && + cfg->finalization_type == FINALIZATION_TYPE_FINUP) { + if (divs[i]->nosimd) + crypto_disable_simd_for_test(); + err = crypto_shash_finup(desc, sg_data(&tsgl->sgl[i]), + tsgl->sgl[i].length, result); + if (divs[i]->nosimd) + crypto_reenable_simd_for_test(); + err = check_shash_op("finup", err, driver, vec_name, + cfg); + if (err) + return err; + goto result_ready; + } + if (divs[i]->nosimd) + crypto_disable_simd_for_test(); + err = crypto_shash_update(desc, sg_data(&tsgl->sgl[i]), + tsgl->sgl[i].length); + if (divs[i]->nosimd) + crypto_reenable_simd_for_test(); + err = check_shash_op("update", err, driver, vec_name, cfg); + if (err) + return err; + if (divs[i]->flush_type == FLUSH_TYPE_REIMPORT) { + /* Test ->export() and ->import() */ + testmgr_poison(hashstate + statesize, + TESTMGR_POISON_LEN); + err = crypto_shash_export(desc, hashstate); + err = check_shash_op("export", err, driver, vec_name, + cfg); + if (err) + return err; + if (!testmgr_is_poison(hashstate + statesize, + TESTMGR_POISON_LEN)) { + pr_err("alg: shash: %s export() overran state buffer on test vector %s, cfg=\"%s\"\n", + driver, vec_name, cfg->name); + return -EOVERFLOW; + } + testmgr_poison(desc->__ctx, crypto_shash_descsize(tfm)); + err = crypto_shash_import(desc, hashstate); + err = check_shash_op("import", err, driver, vec_name, + cfg); + if (err) + return err; + } + } + + if (cfg->nosimd) + crypto_disable_simd_for_test(); + err = crypto_shash_final(desc, result); + if (cfg->nosimd) + crypto_reenable_simd_for_test(); + err = check_shash_op("final", err, driver, vec_name, cfg); + if (err) + return err; +result_ready: + return check_hash_result("shash", result, digestsize, vec, vec_name, + driver, cfg); +} + static int do_ahash_op(int (*op)(struct ahash_request *req), struct ahash_request *req, struct crypto_wait *wait, bool nosimd) @@ -1054,31 +1253,32 @@ static int do_ahash_op(int (*op)(struct ahash_request *req), return crypto_wait_req(err, wait); } -static int check_nonfinal_hash_op(const char *op, int err, - u8 *result, unsigned int digestsize, - const char *driver, const char *vec_name, - const struct testvec_config *cfg) +static int check_nonfinal_ahash_op(const char *op, int err, + u8 *result, unsigned int digestsize, + const char *driver, const char *vec_name, + const struct testvec_config *cfg) { if (err) { - pr_err("alg: hash: %s %s() failed with err %d on test vector %s, cfg=\"%s\"\n", + pr_err("alg: ahash: %s %s() failed with err %d on test vector %s, cfg=\"%s\"\n", driver, op, err, vec_name, cfg->name); return err; } if (!testmgr_is_poison(result, digestsize)) { - pr_err("alg: hash: %s %s() used result buffer on test vector %s, cfg=\"%s\"\n", + pr_err("alg: ahash: %s %s() used result buffer on test vector %s, cfg=\"%s\"\n", driver, op, vec_name, cfg->name); return -EINVAL; } return 0; } -static int test_hash_vec_cfg(const char *driver, - const struct hash_testvec *vec, - const char *vec_name, - const struct testvec_config *cfg, - struct ahash_request *req, - struct test_sglist *tsgl, - u8 *hashstate) +/* Test one hash test vector in one configuration, using the ahash API */ +static int test_ahash_vec_cfg(const char *driver, + const struct hash_testvec *vec, + const char *vec_name, + const struct testvec_config *cfg, + struct ahash_request *req, + struct test_sglist *tsgl, + u8 *hashstate) { struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); const unsigned int alignmask = crypto_ahash_alignmask(tfm); @@ -1087,8 +1287,6 @@ static int test_hash_vec_cfg(const char *driver, const u32 req_flags = CRYPTO_TFM_REQ_MAY_BACKLOG | cfg->req_flags; const struct test_sg_division *divs[XBUFSIZE]; DECLARE_CRYPTO_WAIT(wait); - struct kvec _input; - struct iov_iter input; unsigned int i; struct scatterlist *pending_sgl; unsigned int pending_len; @@ -1101,26 +1299,22 @@ static int test_hash_vec_cfg(const char *driver, if (err) { if (err == vec->setkey_error) return 0; - pr_err("alg: hash: %s setkey failed on test vector %s; expected_error=%d, actual_error=%d, flags=%#x\n", + pr_err("alg: ahash: %s setkey failed on test vector %s; expected_error=%d, actual_error=%d, flags=%#x\n", driver, vec_name, vec->setkey_error, err, crypto_ahash_get_flags(tfm)); return err; } if (vec->setkey_error) { - pr_err("alg: hash: %s setkey unexpectedly succeeded on test vector %s; expected_error=%d\n", + pr_err("alg: ahash: %s setkey unexpectedly succeeded on test vector %s; expected_error=%d\n", driver, vec_name, vec->setkey_error); return -EINVAL; } } /* Build the scatterlist for the source data */ - _input.iov_base = (void *)vec->plaintext; - _input.iov_len = vec->psize; - iov_iter_kvec(&input, WRITE, &_input, 1, vec->psize); - err = build_test_sglist(tsgl, cfg->src_divs, alignmask, vec->psize, - &input, divs); + err = build_hash_sglist(tsgl, vec, cfg, alignmask, divs); if (err) { - pr_err("alg: hash: %s: error preparing scatterlist for test vector %s, cfg=\"%s\"\n", + pr_err("alg: ahash: %s: error preparing scatterlist for test vector %s, cfg=\"%s\"\n", driver, vec_name, cfg->name); return err; } @@ -1140,13 +1334,13 @@ static int test_hash_vec_cfg(const char *driver, if (err) { if (err == vec->digest_error) return 0; - pr_err("alg: hash: %s digest() failed on test vector %s; expected_error=%d, actual_error=%d, cfg=\"%s\"\n", + pr_err("alg: ahash: %s digest() failed on test vector %s; expected_error=%d, actual_error=%d, cfg=\"%s\"\n", driver, vec_name, vec->digest_error, err, cfg->name); return err; } if (vec->digest_error) { - pr_err("alg: hash: %s digest() unexpectedly succeeded on test vector %s; expected_error=%d, cfg=\"%s\"\n", + pr_err("alg: ahash: %s digest() unexpectedly succeeded on test vector %s; expected_error=%d, cfg=\"%s\"\n", driver, vec_name, vec->digest_error, cfg->name); return -EINVAL; } @@ -1158,8 +1352,8 @@ static int test_hash_vec_cfg(const char *driver, ahash_request_set_callback(req, req_flags, crypto_req_done, &wait); ahash_request_set_crypt(req, NULL, result, 0); err = do_ahash_op(crypto_ahash_init, req, &wait, cfg->nosimd); - err = check_nonfinal_hash_op("init", err, result, digestsize, - driver, vec_name, cfg); + err = check_nonfinal_ahash_op("init", err, result, digestsize, + driver, vec_name, cfg); if (err) return err; @@ -1175,9 +1369,9 @@ static int test_hash_vec_cfg(const char *driver, pending_len); err = do_ahash_op(crypto_ahash_update, req, &wait, divs[i]->nosimd); - err = check_nonfinal_hash_op("update", err, - result, digestsize, - driver, vec_name, cfg); + err = check_nonfinal_ahash_op("update", err, + result, digestsize, + driver, vec_name, cfg); if (err) return err; pending_sgl = NULL; @@ -1188,23 +1382,23 @@ static int test_hash_vec_cfg(const char *driver, testmgr_poison(hashstate + statesize, TESTMGR_POISON_LEN); err = crypto_ahash_export(req, hashstate); - err = check_nonfinal_hash_op("export", err, - result, digestsize, - driver, vec_name, cfg); + err = check_nonfinal_ahash_op("export", err, + result, digestsize, + driver, vec_name, cfg); if (err) return err; if (!testmgr_is_poison(hashstate + statesize, TESTMGR_POISON_LEN)) { - pr_err("alg: hash: %s export() overran state buffer on test vector %s, cfg=\"%s\"\n", + pr_err("alg: ahash: %s export() overran state buffer on test vector %s, cfg=\"%s\"\n", driver, vec_name, cfg->name); return -EOVERFLOW; } testmgr_poison(req->__ctx, crypto_ahash_reqsize(tfm)); err = crypto_ahash_import(req, hashstate); - err = check_nonfinal_hash_op("import", err, - result, digestsize, - driver, vec_name, cfg); + err = check_nonfinal_ahash_op("import", err, + result, digestsize, + driver, vec_name, cfg); if (err) return err; } @@ -1218,13 +1412,13 @@ static int test_hash_vec_cfg(const char *driver, if (cfg->finalization_type == FINALIZATION_TYPE_FINAL) { /* finish with update() and final() */ err = do_ahash_op(crypto_ahash_update, req, &wait, cfg->nosimd); - err = check_nonfinal_hash_op("update", err, result, digestsize, - driver, vec_name, cfg); + err = check_nonfinal_ahash_op("update", err, result, digestsize, + driver, vec_name, cfg); if (err) return err; err = do_ahash_op(crypto_ahash_final, req, &wait, cfg->nosimd); if (err) { - pr_err("alg: hash: %s final() failed with err %d on test vector %s, cfg=\"%s\"\n", + pr_err("alg: ahash: %s final() failed with err %d on test vector %s, cfg=\"%s\"\n", driver, err, vec_name, cfg->name); return err; } @@ -1232,31 +1426,49 @@ static int test_hash_vec_cfg(const char *driver, /* finish with finup() */ err = do_ahash_op(crypto_ahash_finup, req, &wait, cfg->nosimd); if (err) { - pr_err("alg: hash: %s finup() failed with err %d on test vector %s, cfg=\"%s\"\n", + pr_err("alg: ahash: %s finup() failed with err %d on test vector %s, cfg=\"%s\"\n", driver, err, vec_name, cfg->name); return err; } } result_ready: - /* Check that the algorithm produced the correct digest */ - if (memcmp(result, vec->digest, digestsize) != 0) { - pr_err("alg: hash: %s test failed (wrong result) on test vector %s, cfg=\"%s\"\n", - driver, vec_name, cfg->name); - return -EINVAL; - } - if (!testmgr_is_poison(&result[digestsize], TESTMGR_POISON_LEN)) { - pr_err("alg: hash: %s overran result buffer on test vector %s, cfg=\"%s\"\n", - driver, vec_name, cfg->name); - return -EOVERFLOW; + return check_hash_result("ahash", result, digestsize, vec, vec_name, + driver, cfg); +} + +static int test_hash_vec_cfg(const char *driver, + const struct hash_testvec *vec, + const char *vec_name, + const struct testvec_config *cfg, + struct ahash_request *req, + struct shash_desc *desc, + struct test_sglist *tsgl, + u8 *hashstate) +{ + int err; + + /* + * For algorithms implemented as "shash", most bugs will be detected by + * both the shash and ahash tests. Test the shash API first so that the + * failures involve less indirection, so are easier to debug. + */ + + if (desc) { + err = test_shash_vec_cfg(driver, vec, vec_name, cfg, desc, tsgl, + hashstate); + if (err) + return err; } - return 0; + return test_ahash_vec_cfg(driver, vec, vec_name, cfg, req, tsgl, + hashstate); } static int test_hash_vec(const char *driver, const struct hash_testvec *vec, unsigned int vec_num, struct ahash_request *req, - struct test_sglist *tsgl, u8 *hashstate) + struct shash_desc *desc, struct test_sglist *tsgl, + u8 *hashstate) { char vec_name[16]; unsigned int i; @@ -1267,7 +1479,7 @@ static int test_hash_vec(const char *driver, const struct hash_testvec *vec, for (i = 0; i < ARRAY_SIZE(default_hash_testvec_configs); i++) { err = test_hash_vec_cfg(driver, vec, vec_name, &default_hash_testvec_configs[i], - req, tsgl, hashstate); + req, desc, tsgl, hashstate); if (err) return err; } @@ -1281,7 +1493,7 @@ static int test_hash_vec(const char *driver, const struct hash_testvec *vec, generate_random_testvec_config(&cfg, cfgname, sizeof(cfgname)); err = test_hash_vec_cfg(driver, vec, vec_name, &cfg, - req, tsgl, hashstate); + req, desc, tsgl, hashstate); if (err) return err; } @@ -1343,6 +1555,7 @@ static int test_hash_vs_generic_impl(const char *driver, const char *generic_driver, unsigned int maxkeysize, struct ahash_request *req, + struct shash_desc *desc, struct test_sglist *tsgl, u8 *hashstate) { @@ -1423,7 +1636,7 @@ static int test_hash_vs_generic_impl(const char *driver, generate_random_testvec_config(&cfg, cfgname, sizeof(cfgname)); err = test_hash_vec_cfg(driver, &vec, vec_name, &cfg, - req, tsgl, hashstate); + req, desc, tsgl, hashstate); if (err) goto out; cond_resched(); @@ -1441,6 +1654,7 @@ static int test_hash_vs_generic_impl(const char *driver, const char *generic_driver, unsigned int maxkeysize, struct ahash_request *req, + struct shash_desc *desc, struct test_sglist *tsgl, u8 *hashstate) { @@ -1448,26 +1662,67 @@ static int test_hash_vs_generic_impl(const char *driver, } #endif /* !CONFIG_CRYPTO_MANAGER_EXTRA_TESTS */ +static int alloc_shash(const char *driver, u32 type, u32 mask, + struct crypto_shash **tfm_ret, + struct shash_desc **desc_ret) +{ + struct crypto_shash *tfm; + struct shash_desc *desc; + + tfm = crypto_alloc_shash(driver, type, mask); + if (IS_ERR(tfm)) { + if (PTR_ERR(tfm) == -ENOENT) { + /* + * This algorithm is only available through the ahash + * API, not the shash API, so skip the shash tests. + */ + return 0; + } + pr_err("alg: hash: failed to allocate shash transform for %s: %ld\n", + driver, PTR_ERR(tfm)); + return PTR_ERR(tfm); + } + + desc = kmalloc(sizeof(*desc) + crypto_shash_descsize(tfm), GFP_KERNEL); + if (!desc) { + crypto_free_shash(tfm); + return -ENOMEM; + } + desc->tfm = tfm; + + *tfm_ret = tfm; + *desc_ret = desc; + return 0; +} + static int __alg_test_hash(const struct hash_testvec *vecs, unsigned int num_vecs, const char *driver, u32 type, u32 mask, const char *generic_driver, unsigned int maxkeysize) { - struct crypto_ahash *tfm; + struct crypto_ahash *atfm = NULL; struct ahash_request *req = NULL; + struct crypto_shash *stfm = NULL; + struct shash_desc *desc = NULL; struct test_sglist *tsgl = NULL; u8 *hashstate = NULL; + unsigned int statesize; unsigned int i; int err; - tfm = crypto_alloc_ahash(driver, type, mask); - if (IS_ERR(tfm)) { + /* + * Always test the ahash API. This works regardless of whether the + * algorithm is implemented as ahash or shash. + */ + + atfm = crypto_alloc_ahash(driver, type, mask); + if (IS_ERR(atfm)) { pr_err("alg: hash: failed to allocate transform for %s: %ld\n", - driver, PTR_ERR(tfm)); - return PTR_ERR(tfm); + driver, PTR_ERR(atfm)); + return PTR_ERR(atfm); } - req = ahash_request_alloc(tfm, GFP_KERNEL); + req = ahash_request_alloc(atfm, GFP_KERNEL); if (!req) { pr_err("alg: hash: failed to allocate request for %s\n", driver); @@ -1475,6 +1730,14 @@ static int __alg_test_hash(const struct hash_testvec *vecs, goto out; } + /* + * If available also test the shash API, to cover corner cases that may + * be missed by testing the ahash API only. + */ + err = alloc_shash(driver, type, mask, &stfm, &desc); + if (err) + goto out; + tsgl = kmalloc(sizeof(*tsgl), GFP_KERNEL); if (!tsgl || init_test_sglist(tsgl) != 0) { pr_err("alg: hash: failed to allocate test buffers for %s\n", @@ -1485,8 +1748,10 @@ static int __alg_test_hash(const struct hash_testvec *vecs, goto out; } - hashstate = kmalloc(crypto_ahash_statesize(tfm) + TESTMGR_POISON_LEN, - GFP_KERNEL); + statesize = crypto_ahash_statesize(atfm); + if (stfm) + statesize = max(statesize, crypto_shash_statesize(stfm)); + hashstate = kmalloc(statesize + TESTMGR_POISON_LEN, GFP_KERNEL); if (!hashstate) { pr_err("alg: hash: failed to allocate hash state buffer for %s\n", driver); @@ -1495,20 +1760,23 @@ static int __alg_test_hash(const struct hash_testvec *vecs, } for (i = 0; i < num_vecs; i++) { - err = test_hash_vec(driver, &vecs[i], i, req, tsgl, hashstate); + err = test_hash_vec(driver, &vecs[i], i, req, desc, tsgl, + hashstate); if (err) goto out; } err = test_hash_vs_generic_impl(driver, generic_driver, maxkeysize, req, - tsgl, hashstate); + desc, tsgl, hashstate); out: kfree(hashstate); if (tsgl) { destroy_test_sglist(tsgl); kfree(tsgl); } + kfree(desc); + crypto_free_shash(stfm); ahash_request_free(req); - crypto_free_ahash(tfm); + crypto_free_ahash(atfm); return err; } |