diff options
Diffstat (limited to 'crypto/testmgr.c')
| -rw-r--r-- | crypto/testmgr.c | 584 |
1 files changed, 441 insertions, 143 deletions
diff --git a/crypto/testmgr.c b/crypto/testmgr.c index 82513b6b0abd..88f33c0efb23 100644 --- a/crypto/testmgr.c +++ b/crypto/testmgr.c @@ -82,6 +82,19 @@ int alg_test(const char *driver, const char *alg, u32 type, u32 mask) struct aead_test_suite { const struct aead_testvec *vecs; unsigned int count; + + /* + * Set if trying to decrypt an inauthentic ciphertext with this + * algorithm might result in EINVAL rather than EBADMSG, due to other + * validation the algorithm does on the inputs such as length checks. + */ + unsigned int einval_allowed : 1; + + /* + * Set if the algorithm intentionally ignores the last 8 bytes of the + * AAD buffer during decryption. + */ + unsigned int esp_aad : 1; }; struct cipher_test_suite { @@ -259,6 +272,9 @@ struct test_sg_division { * where 0 is aligned to a 2*(MAX_ALGAPI_ALIGNMASK+1) byte boundary * @iv_offset_relative_to_alignmask: if true, add the algorithm's alignmask to * the @iv_offset + * @key_offset: misalignment of the key, where 0 is default alignment + * @key_offset_relative_to_alignmask: if true, add the algorithm's alignmask to + * the @key_offset * @finalization_type: what finalization function to use for hashes * @nosimd: execute with SIMD disabled? Requires !CRYPTO_TFM_REQ_MAY_SLEEP. */ @@ -269,7 +285,9 @@ struct testvec_config { struct test_sg_division src_divs[XBUFSIZE]; struct test_sg_division dst_divs[XBUFSIZE]; unsigned int iv_offset; + unsigned int key_offset; bool iv_offset_relative_to_alignmask; + bool key_offset_relative_to_alignmask; enum finalization_type finalization_type; bool nosimd; }; @@ -297,6 +315,7 @@ static const struct testvec_config default_cipher_testvec_configs[] = { .name = "unaligned buffer, offset=1", .src_divs = { { .proportion_of_total = 10000, .offset = 1 } }, .iv_offset = 1, + .key_offset = 1, }, { .name = "buffer aligned only to alignmask", .src_divs = { @@ -308,6 +327,8 @@ static const struct testvec_config default_cipher_testvec_configs[] = { }, .iv_offset = 1, .iv_offset_relative_to_alignmask = true, + .key_offset = 1, + .key_offset_relative_to_alignmask = true, }, { .name = "two even aligned splits", .src_divs = { @@ -323,6 +344,7 @@ static const struct testvec_config default_cipher_testvec_configs[] = { { .proportion_of_total = 4800, .offset = 18 }, }, .iv_offset = 3, + .key_offset = 3, }, { .name = "misaligned splits crossing pages, inplace", .inplace = true, @@ -355,6 +377,7 @@ static const struct testvec_config default_hash_testvec_configs[] = { .name = "init+update+final misaligned buffer", .src_divs = { { .proportion_of_total = 10000, .offset = 1 } }, .finalization_type = FINALIZATION_TYPE_FINAL, + .key_offset = 1, }, { .name = "digest buffer aligned only to alignmask", .src_divs = { @@ -365,6 +388,8 @@ static const struct testvec_config default_hash_testvec_configs[] = { }, }, .finalization_type = FINALIZATION_TYPE_DIGEST, + .key_offset = 1, + .key_offset_relative_to_alignmask = true, }, { .name = "init+update+update+final two even splits", .src_divs = { @@ -740,6 +765,49 @@ static int build_cipher_test_sglists(struct cipher_test_sglists *tsgls, alignmask, dst_total_len, NULL, NULL); } +/* + * Support for testing passing a misaligned key to setkey(): + * + * If cfg->key_offset is set, copy the key into a new buffer at that offset, + * optionally adding alignmask. Else, just use the key directly. + */ +static int prepare_keybuf(const u8 *key, unsigned int ksize, + const struct testvec_config *cfg, + unsigned int alignmask, + const u8 **keybuf_ret, const u8 **keyptr_ret) +{ + unsigned int key_offset = cfg->key_offset; + u8 *keybuf = NULL, *keyptr = (u8 *)key; + + if (key_offset != 0) { + if (cfg->key_offset_relative_to_alignmask) + key_offset += alignmask; + keybuf = kmalloc(key_offset + ksize, GFP_KERNEL); + if (!keybuf) + return -ENOMEM; + keyptr = keybuf + key_offset; + memcpy(keyptr, key, ksize); + } + *keybuf_ret = keybuf; + *keyptr_ret = keyptr; + return 0; +} + +/* Like setkey_f(tfm, key, ksize), but sometimes misalign the key */ +#define do_setkey(setkey_f, tfm, key, ksize, cfg, alignmask) \ +({ \ + const u8 *keybuf, *keyptr; \ + int err; \ + \ + err = prepare_keybuf((key), (ksize), (cfg), (alignmask), \ + &keybuf, &keyptr); \ + if (err == 0) { \ + err = setkey_f((tfm), keyptr, (ksize)); \ + kfree(keybuf); \ + } \ + err; \ +}) + #ifdef CONFIG_CRYPTO_MANAGER_EXTRA_TESTS /* Generate a random length in range [0, max_len], but prefer smaller values */ @@ -759,27 +827,39 @@ static unsigned int generate_random_length(unsigned int max_len) } } -/* Sometimes make some random changes to the given data buffer */ -static void mutate_buffer(u8 *buf, size_t count) +/* Flip a random bit in the given nonempty data buffer */ +static void flip_random_bit(u8 *buf, size_t size) +{ + size_t bitpos; + + bitpos = prandom_u32() % (size * 8); + buf[bitpos / 8] ^= 1 << (bitpos % 8); +} + +/* Flip a random byte in the given nonempty data buffer */ +static void flip_random_byte(u8 *buf, size_t size) +{ + buf[prandom_u32() % size] ^= 0xff; +} + +/* Sometimes make some random changes to the given nonempty data buffer */ +static void mutate_buffer(u8 *buf, size_t size) { size_t num_flips; size_t i; - size_t pos; /* Sometimes flip some bits */ if (prandom_u32() % 4 == 0) { - num_flips = min_t(size_t, 1 << (prandom_u32() % 8), count * 8); - for (i = 0; i < num_flips; i++) { - pos = prandom_u32() % (count * 8); - buf[pos / 8] ^= 1 << (pos % 8); - } + num_flips = min_t(size_t, 1 << (prandom_u32() % 8), size * 8); + for (i = 0; i < num_flips; i++) + flip_random_bit(buf, size); } /* Sometimes flip some bytes */ if (prandom_u32() % 4 == 0) { - num_flips = min_t(size_t, 1 << (prandom_u32() % 8), count); + num_flips = min_t(size_t, 1 << (prandom_u32() % 8), size); for (i = 0; i < num_flips; i++) - buf[prandom_u32() % count] ^= 0xff; + flip_random_byte(buf, size); } } @@ -966,6 +1046,11 @@ static void generate_random_testvec_config(struct testvec_config *cfg, p += scnprintf(p, end - p, " iv_offset=%u", cfg->iv_offset); } + if (prandom_u32() % 2 == 0) { + cfg->key_offset = 1 + (prandom_u32() % MAX_ALGAPI_ALIGNMASK); + p += scnprintf(p, end - p, " key_offset=%u", cfg->key_offset); + } + WARN_ON_ONCE(!valid_testvec_config(cfg)); } @@ -1103,7 +1188,8 @@ static int test_shash_vec_cfg(const char *driver, /* Set the key, if specified */ if (vec->ksize) { - err = crypto_shash_setkey(tfm, vec->key, vec->ksize); + err = do_setkey(crypto_shash_setkey, tfm, vec->key, vec->ksize, + cfg, alignmask); if (err) { if (err == vec->setkey_error) return 0; @@ -1290,7 +1376,8 @@ static int test_ahash_vec_cfg(const char *driver, /* Set the key, if specified */ if (vec->ksize) { - err = crypto_ahash_setkey(tfm, vec->key, vec->ksize); + err = do_setkey(crypto_ahash_setkey, tfm, vec->key, vec->ksize, + cfg, alignmask); if (err) { if (err == vec->setkey_error) return 0; @@ -1853,7 +1940,6 @@ static int test_aead_vec_cfg(const char *driver, int enc, cfg->iv_offset + (cfg->iv_offset_relative_to_alignmask ? alignmask : 0); struct kvec input[2]; - int expected_error; int err; /* Set the key */ @@ -1861,7 +1947,9 @@ static int test_aead_vec_cfg(const char *driver, int enc, crypto_aead_set_flags(tfm, CRYPTO_TFM_REQ_FORBID_WEAK_KEYS); else crypto_aead_clear_flags(tfm, CRYPTO_TFM_REQ_FORBID_WEAK_KEYS); - err = crypto_aead_setkey(tfm, vec->key, vec->klen); + + err = do_setkey(crypto_aead_setkey, tfm, vec->key, vec->klen, + cfg, alignmask); if (err && err != vec->setkey_error) { pr_err("alg: aead: %s setkey failed on test vector %s; expected_error=%d, actual_error=%d, flags=%#x\n", driver, vec_name, vec->setkey_error, err, @@ -1972,20 +2060,31 @@ static int test_aead_vec_cfg(const char *driver, int enc, return -EINVAL; } - /* Check for success or failure */ - expected_error = vec->novrfy ? -EBADMSG : vec->crypt_error; - if (err) { - if (err == expected_error) - return 0; - pr_err("alg: aead: %s %s failed on test vector %s; expected_error=%d, actual_error=%d, cfg=\"%s\"\n", - driver, op, vec_name, expected_error, err, cfg->name); - return err; - } - if (expected_error) { - pr_err("alg: aead: %s %s unexpectedly succeeded on test vector %s; expected_error=%d, cfg=\"%s\"\n", + /* Check for unexpected success or failure, or wrong error code */ + if ((err == 0 && vec->novrfy) || + (err != vec->crypt_error && !(err == -EBADMSG && vec->novrfy))) { + char expected_error[32]; + + if (vec->novrfy && + vec->crypt_error != 0 && vec->crypt_error != -EBADMSG) + sprintf(expected_error, "-EBADMSG or %d", + vec->crypt_error); + else if (vec->novrfy) + sprintf(expected_error, "-EBADMSG"); + else + sprintf(expected_error, "%d", vec->crypt_error); + if (err) { + pr_err("alg: aead: %s %s failed on test vector %s; expected_error=%s, actual_error=%d, cfg=\"%s\"\n", + driver, op, vec_name, expected_error, err, + cfg->name); + return err; + } + pr_err("alg: aead: %s %s unexpectedly succeeded on test vector %s; expected_error=%s, cfg=\"%s\"\n", driver, op, vec_name, expected_error, cfg->name); return -EINVAL; } + if (err) /* Expectedly failed. */ + return 0; /* Check for the correct output (ciphertext or plaintext) */ err = verify_correct_output(&tsgls->dst, enc ? vec->ctext : vec->ptext, @@ -2047,25 +2146,129 @@ static int test_aead_vec(const char *driver, int enc, } #ifdef CONFIG_CRYPTO_MANAGER_EXTRA_TESTS + +struct aead_extra_tests_ctx { + struct aead_request *req; + struct crypto_aead *tfm; + const char *driver; + const struct alg_test_desc *test_desc; + struct cipher_test_sglists *tsgls; + unsigned int maxdatasize; + unsigned int maxkeysize; + + struct aead_testvec vec; + char vec_name[64]; + char cfgname[TESTVEC_CONFIG_NAMELEN]; + struct testvec_config cfg; +}; + /* - * Generate an AEAD test vector from the given implementation. - * Assumes the buffers in 'vec' were already allocated. + * Make at least one random change to a (ciphertext, AAD) pair. "Ciphertext" + * here means the full ciphertext including the authentication tag. The + * authentication tag (and hence also the ciphertext) is assumed to be nonempty. + */ +static void mutate_aead_message(struct aead_testvec *vec, bool esp_aad) +{ + const unsigned int aad_tail_size = esp_aad ? 8 : 0; + const unsigned int authsize = vec->clen - vec->plen; + + if (prandom_u32() % 2 == 0 && vec->alen > aad_tail_size) { + /* Mutate the AAD */ + flip_random_bit((u8 *)vec->assoc, vec->alen - aad_tail_size); + if (prandom_u32() % 2 == 0) + return; + } + if (prandom_u32() % 2 == 0) { + /* Mutate auth tag (assuming it's at the end of ciphertext) */ + flip_random_bit((u8 *)vec->ctext + vec->plen, authsize); + } else { + /* Mutate any part of the ciphertext */ + flip_random_bit((u8 *)vec->ctext, vec->clen); + } +} + +/* + * Minimum authentication tag size in bytes at which we assume that we can + * reliably generate inauthentic messages, i.e. not generate an authentic + * message by chance. + */ +#define MIN_COLLISION_FREE_AUTHSIZE 8 + +static void generate_aead_message(struct aead_request *req, + const struct aead_test_suite *suite, + struct aead_testvec *vec, + bool prefer_inauthentic) +{ + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + const unsigned int ivsize = crypto_aead_ivsize(tfm); + const unsigned int authsize = vec->clen - vec->plen; + const bool inauthentic = (authsize >= MIN_COLLISION_FREE_AUTHSIZE) && + (prefer_inauthentic || prandom_u32() % 4 == 0); + + /* Generate the AAD. */ + generate_random_bytes((u8 *)vec->assoc, vec->alen); + + if (inauthentic && prandom_u32() % 2 == 0) { + /* Generate a random ciphertext. */ + generate_random_bytes((u8 *)vec->ctext, vec->clen); + } else { + int i = 0; + struct scatterlist src[2], dst; + u8 iv[MAX_IVLEN]; + DECLARE_CRYPTO_WAIT(wait); + + /* Generate a random plaintext and encrypt it. */ + sg_init_table(src, 2); + if (vec->alen) + sg_set_buf(&src[i++], vec->assoc, vec->alen); + if (vec->plen) { + generate_random_bytes((u8 *)vec->ptext, vec->plen); + sg_set_buf(&src[i++], vec->ptext, vec->plen); + } + sg_init_one(&dst, vec->ctext, vec->alen + vec->clen); + memcpy(iv, vec->iv, ivsize); + aead_request_set_callback(req, 0, crypto_req_done, &wait); + aead_request_set_crypt(req, src, &dst, vec->plen, iv); + aead_request_set_ad(req, vec->alen); + vec->crypt_error = crypto_wait_req(crypto_aead_encrypt(req), + &wait); + /* If encryption failed, we're done. */ + if (vec->crypt_error != 0) + return; + memmove((u8 *)vec->ctext, vec->ctext + vec->alen, vec->clen); + if (!inauthentic) + return; + /* + * Mutate the authentic (ciphertext, AAD) pair to get an + * inauthentic one. + */ + mutate_aead_message(vec, suite->esp_aad); + } + vec->novrfy = 1; + if (suite->einval_allowed) + vec->crypt_error = -EINVAL; +} + +/* + * Generate an AEAD test vector 'vec' using the implementation specified by + * 'req'. The buffers in 'vec' must already be allocated. + * + * If 'prefer_inauthentic' is true, then this function will generate inauthentic + * test vectors (i.e. vectors with 'vec->novrfy=1') more often. */ static void generate_random_aead_testvec(struct aead_request *req, struct aead_testvec *vec, + const struct aead_test_suite *suite, unsigned int maxkeysize, unsigned int maxdatasize, - char *name, size_t max_namelen) + char *name, size_t max_namelen, + bool prefer_inauthentic) { struct crypto_aead *tfm = crypto_aead_reqtfm(req); const unsigned int ivsize = crypto_aead_ivsize(tfm); - unsigned int maxauthsize = crypto_aead_alg(tfm)->maxauthsize; + const unsigned int maxauthsize = crypto_aead_maxauthsize(tfm); unsigned int authsize; unsigned int total_len; - int i; - struct scatterlist src[2], dst; - u8 iv[MAX_IVLEN]; - DECLARE_CRYPTO_WAIT(wait); /* Key: length in [0, maxkeysize], but usually choose maxkeysize */ vec->klen = maxkeysize; @@ -2081,81 +2284,101 @@ static void generate_random_aead_testvec(struct aead_request *req, authsize = maxauthsize; if (prandom_u32() % 4 == 0) authsize = prandom_u32() % (maxauthsize + 1); + if (prefer_inauthentic && authsize < MIN_COLLISION_FREE_AUTHSIZE) + authsize = MIN_COLLISION_FREE_AUTHSIZE; if (WARN_ON(authsize > maxdatasize)) authsize = maxdatasize; maxdatasize -= authsize; vec->setauthsize_error = crypto_aead_setauthsize(tfm, authsize); - /* Plaintext and associated data */ + /* AAD, plaintext, and ciphertext lengths */ total_len = generate_random_length(maxdatasize); if (prandom_u32() % 4 == 0) vec->alen = 0; else vec->alen = generate_random_length(total_len); vec->plen = total_len - vec->alen; - generate_random_bytes((u8 *)vec->assoc, vec->alen); - generate_random_bytes((u8 *)vec->ptext, vec->plen); - vec->clen = vec->plen + authsize; /* - * If the key or authentication tag size couldn't be set, no need to - * continue to encrypt. + * Generate the AAD, plaintext, and ciphertext. Not applicable if the + * key or the authentication tag size couldn't be set. */ - if (vec->setkey_error || vec->setauthsize_error) - goto done; - - /* Ciphertext */ - sg_init_table(src, 2); - i = 0; - if (vec->alen) - sg_set_buf(&src[i++], vec->assoc, vec->alen); - if (vec->plen) - sg_set_buf(&src[i++], vec->ptext, vec->plen); - sg_init_one(&dst, vec->ctext, vec->alen + vec->clen); - memcpy(iv, vec->iv, ivsize); - aead_request_set_callback(req, 0, crypto_req_done, &wait); - aead_request_set_crypt(req, src, &dst, vec->plen, iv); - aead_request_set_ad(req, vec->alen); - vec->crypt_error = crypto_wait_req(crypto_aead_encrypt(req), &wait); - if (vec->crypt_error == 0) - memmove((u8 *)vec->ctext, vec->ctext + vec->alen, vec->clen); -done: + vec->novrfy = 0; + vec->crypt_error = 0; + if (vec->setkey_error == 0 && vec->setauthsize_error == 0) + generate_aead_message(req, suite, vec, prefer_inauthentic); snprintf(name, max_namelen, - "\"random: alen=%u plen=%u authsize=%u klen=%u\"", - vec->alen, vec->plen, authsize, vec->klen); + "\"random: alen=%u plen=%u authsize=%u klen=%u novrfy=%d\"", + vec->alen, vec->plen, authsize, vec->klen, vec->novrfy); +} + +static void try_to_generate_inauthentic_testvec( + struct aead_extra_tests_ctx *ctx) +{ + int i; + + for (i = 0; i < 10; i++) { + generate_random_aead_testvec(ctx->req, &ctx->vec, + &ctx->test_desc->suite.aead, + ctx->maxkeysize, ctx->maxdatasize, + ctx->vec_name, + sizeof(ctx->vec_name), true); + if (ctx->vec.novrfy) + return; + } } /* - * Test the AEAD algorithm represented by @req against the corresponding generic - * implementation, if one is available. + * Generate inauthentic test vectors (i.e. ciphertext, AAD pairs that aren't the + * result of an encryption with the key) and verify that decryption fails. */ -static int test_aead_vs_generic_impl(const char *driver, - const struct alg_test_desc *test_desc, - struct aead_request *req, - struct cipher_test_sglists *tsgls) +static int test_aead_inauthentic_inputs(struct aead_extra_tests_ctx *ctx) { - struct crypto_aead *tfm = crypto_aead_reqtfm(req); - const unsigned int ivsize = crypto_aead_ivsize(tfm); - const unsigned int maxauthsize = crypto_aead_alg(tfm)->maxauthsize; - const unsigned int blocksize = crypto_aead_blocksize(tfm); - const unsigned int maxdatasize = (2 * PAGE_SIZE) - TESTMGR_POISON_LEN; + unsigned int i; + int err; + + for (i = 0; i < fuzz_iterations * 8; i++) { + /* + * Since this part of the tests isn't comparing the + * implementation to another, there's no point in testing any + * test vectors other than inauthentic ones (vec.novrfy=1) here. + * + * If we're having trouble generating such a test vector, e.g. + * if the algorithm keeps rejecting the generated keys, don't + * retry forever; just continue on. + */ + try_to_generate_inauthentic_testvec(ctx); + if (ctx->vec.novrfy) { + generate_random_testvec_config(&ctx->cfg, ctx->cfgname, + sizeof(ctx->cfgname)); + err = test_aead_vec_cfg(ctx->driver, DECRYPT, &ctx->vec, + ctx->vec_name, &ctx->cfg, + ctx->req, ctx->tsgls); + if (err) + return err; + } + cond_resched(); + } + return 0; +} + +/* + * Test the AEAD algorithm against the corresponding generic implementation, if + * one is available. + */ +static int test_aead_vs_generic_impl(struct aead_extra_tests_ctx *ctx) +{ + struct crypto_aead *tfm = ctx->tfm; const char *algname = crypto_aead_alg(tfm)->base.cra_name; - const char *generic_driver = test_desc->generic_driver; + const char *driver = ctx->driver; + const char *generic_driver = ctx->test_desc->generic_driver; char _generic_driver[CRYPTO_MAX_ALG_NAME]; struct crypto_aead *generic_tfm = NULL; struct aead_request *generic_req = NULL; - unsigned int maxkeysize; unsigned int i; - struct aead_testvec vec = { 0 }; - char vec_name[64]; - struct testvec_config *cfg; - char cfgname[TESTVEC_CONFIG_NAMELEN]; int err; - if (noextratests) - return 0; - if (!generic_driver) { /* Use default naming convention? */ err = build_generic_driver_name(algname, _generic_driver); if (err) @@ -2179,12 +2402,6 @@ static int test_aead_vs_generic_impl(const char *driver, return err; } - cfg = kzalloc(sizeof(*cfg), GFP_KERNEL); - if (!cfg) { - err = -ENOMEM; - goto out; - } - generic_req = aead_request_alloc(generic_tfm, GFP_KERNEL); if (!generic_req) { err = -ENOMEM; @@ -2193,24 +2410,27 @@ static int test_aead_vs_generic_impl(const char *driver, /* Check the algorithm properties for consistency. */ - if (maxauthsize != crypto_aead_alg(generic_tfm)->maxauthsize) { + if (crypto_aead_maxauthsize(tfm) != + crypto_aead_maxauthsize(generic_tfm)) { pr_err("alg: aead: maxauthsize for %s (%u) doesn't match generic impl (%u)\n", - driver, maxauthsize, - crypto_aead_alg(generic_tfm)->maxauthsize); + driver, crypto_aead_maxauthsize(tfm), + crypto_aead_maxauthsize(generic_tfm)); err = -EINVAL; goto out; } - if (ivsize != crypto_aead_ivsize(generic_tfm)) { + if (crypto_aead_ivsize(tfm) != crypto_aead_ivsize(generic_tfm)) { pr_err("alg: aead: ivsize for %s (%u) doesn't match generic impl (%u)\n", - driver, ivsize, crypto_aead_ivsize(generic_tfm)); + driver, crypto_aead_ivsize(tfm), + crypto_aead_ivsize(generic_tfm)); err = -EINVAL; goto out; } - if (blocksize != crypto_aead_blocksize(generic_tfm)) { + if (crypto_aead_blocksize(tfm) != crypto_aead_blocksize(generic_tfm)) { pr_err("alg: aead: blocksize for %s (%u) doesn't match generic impl (%u)\n", - driver, blocksize, crypto_aead_blocksize(generic_tfm)); + driver, crypto_aead_blocksize(tfm), + crypto_aead_blocksize(generic_tfm)); err = -EINVAL; goto out; } @@ -2219,55 +2439,93 @@ static int test_aead_vs_generic_impl(const char *driver, * Now generate test vectors using the generic implementation, and test * the other implementation against them. */ + for (i = 0; i < fuzz_iterations * 8; i++) { + generate_random_aead_testvec(generic_req, &ctx->vec, + &ctx->test_desc->suite.aead, + ctx->maxkeysize, ctx->maxdatasize, + ctx->vec_name, + sizeof(ctx->vec_name), false); + generate_random_testvec_config(&ctx->cfg, ctx->cfgname, + sizeof(ctx->cfgname)); + if (!ctx->vec.novrfy) { + err = test_aead_vec_cfg(driver, ENCRYPT, &ctx->vec, + ctx->vec_name, &ctx->cfg, + ctx->req, ctx->tsgls); + if (err) + goto out; + } + if (ctx->vec.crypt_error == 0 || ctx->vec.novrfy) { + err = test_aead_vec_cfg(driver, DECRYPT, &ctx->vec, + ctx->vec_name, &ctx->cfg, + ctx->req, ctx->tsgls); + if (err) + goto out; + } + cond_resched(); + } + err = 0; +out: + crypto_free_aead(generic_tfm); + aead_request_free(generic_req); + return err; +} - maxkeysize = 0; - for (i = 0; i < test_desc->suite.aead.count; i++) - maxkeysize = max_t(unsigned int, maxkeysize, - test_desc->suite.aead.vecs[i].klen); +static int test_aead_extra(const char *driver, + const struct alg_test_desc *test_desc, + struct aead_request *req, + struct cipher_test_sglists *tsgls) +{ + struct aead_extra_tests_ctx *ctx; + unsigned int i; + int err; - vec.key = kmalloc(maxkeysize, GFP_KERNEL); - vec.iv = kmalloc(ivsize, GFP_KERNEL); - vec.assoc = kmalloc(maxdatasize, GFP_KERNEL); - vec.ptext = kmalloc(maxdatasize, GFP_KERNEL); - vec.ctext = kmalloc(maxdatasize, GFP_KERNEL); - if (!vec.key || !vec.iv || !vec.assoc || !vec.ptext || !vec.ctext) { + if (noextratests) + return 0; + + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + ctx->req = req; + ctx->tfm = crypto_aead_reqtfm(req); + ctx->driver = driver; + ctx->test_desc = test_desc; + ctx->tsgls = tsgls; + ctx->maxdatasize = (2 * PAGE_SIZE) - TESTMGR_POISON_LEN; + ctx->maxkeysize = 0; + for (i = 0; i < test_desc->suite.aead.count; i++) + ctx->maxkeysize = max_t(unsigned int, ctx->maxkeysize, + test_desc->suite.aead.vecs[i].klen); + + ctx->vec.key = kmalloc(ctx->maxkeysize, GFP_KERNEL); + ctx->vec.iv = kmalloc(crypto_aead_ivsize(ctx->tfm), GFP_KERNEL); + ctx->vec.assoc = kmalloc(ctx->maxdatasize, GFP_KERNEL); + ctx->vec.ptext = kmalloc(ctx->maxdatasize, GFP_KERNEL); + ctx->vec.ctext = kmalloc(ctx->maxdatasize, GFP_KERNEL); + if (!ctx->vec.key || !ctx->vec.iv || !ctx->vec.assoc || + !ctx->vec.ptext || !ctx->vec.ctext) { err = -ENOMEM; goto out; } - for (i = 0; i < fuzz_iterations * 8; i++) { - generate_random_aead_testvec(generic_req, &vec, - maxkeysize, maxdatasize, - vec_name, sizeof(vec_name)); - generate_random_testvec_config(cfg, cfgname, sizeof(cfgname)); + err = test_aead_inauthentic_inputs(ctx); + if (err) + goto out; - err = test_aead_vec_cfg(driver, ENCRYPT, &vec, vec_name, cfg, - req, tsgls); - if (err) - goto out; - err = test_aead_vec_cfg(driver, DECRYPT, &vec, vec_name, cfg, - req, tsgls); - if (err) - goto out; - cond_resched(); - } - err = 0; + err = test_aead_vs_generic_impl(ctx); out: - kfree(cfg); - kfree(vec.key); - kfree(vec.iv); - kfree(vec.assoc); - kfree(vec.ptext); - kfree(vec.ctext); - crypto_free_aead(generic_tfm); - aead_request_free(generic_req); + kfree(ctx->vec.key); + kfree(ctx->vec.iv); + kfree(ctx->vec.assoc); + kfree(ctx->vec.ptext); + kfree(ctx->vec.ctext); + kfree(ctx); return err; } #else /* !CONFIG_CRYPTO_MANAGER_EXTRA_TESTS */ -static int test_aead_vs_generic_impl(const char *driver, - const struct alg_test_desc *test_desc, - struct aead_request *req, - struct cipher_test_sglists *tsgls) +static int test_aead_extra(const char *driver, + const struct alg_test_desc *test_desc, + struct aead_request *req, + struct cipher_test_sglists *tsgls) { return 0; } @@ -2336,7 +2594,7 @@ static int alg_test_aead(const struct alg_test_desc *desc, const char *driver, if (err) goto out; - err = test_aead_vs_generic_impl(driver, desc, req, tsgls); + err = test_aead_extra(driver, desc, req, tsgls); out: free_cipher_test_sglists(tsgls); aead_request_free(req); @@ -2457,7 +2715,8 @@ static int test_skcipher_vec_cfg(const char *driver, int enc, else crypto_skcipher_clear_flags(tfm, CRYPTO_TFM_REQ_FORBID_WEAK_KEYS); - err = crypto_skcipher_setkey(tfm, vec->key, vec->klen); + err = do_setkey(crypto_skcipher_setkey, tfm, vec->key, vec->klen, + cfg, alignmask); if (err) { if (err == vec->setkey_error) return 0; @@ -2647,7 +2906,7 @@ static void generate_random_cipher_testvec(struct skcipher_request *req, char *name, size_t max_namelen) { struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); - const unsigned int maxkeysize = tfm->keysize; + const unsigned int maxkeysize = crypto_skcipher_max_keysize(tfm); const unsigned int ivsize = crypto_skcipher_ivsize(tfm); struct scatterlist src, dst; u8 iv[MAX_IVLEN]; @@ -2678,6 +2937,15 @@ static void generate_random_cipher_testvec(struct skcipher_request *req, skcipher_request_set_callback(req, 0, crypto_req_done, &wait); skcipher_request_set_crypt(req, &src, &dst, vec->len, iv); vec->crypt_error = crypto_wait_req(crypto_skcipher_encrypt(req), &wait); + if (vec->crypt_error != 0) { + /* + * The only acceptable error here is for an invalid length, so + * skcipher decryption should fail with the same error too. + * We'll test for this. But to keep the API usage well-defined, + * explicitly initialize the ciphertext buffer too. + */ + memset((u8 *)vec->ctext, 0, vec->len); + } done: snprintf(name, max_namelen, "\"random: len=%u klen=%u\"", vec->len, vec->klen); @@ -2693,6 +2961,7 @@ static int test_skcipher_vs_generic_impl(const char *driver, struct cipher_test_sglists *tsgls) { struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); + const unsigned int maxkeysize = crypto_skcipher_max_keysize(tfm); const unsigned int ivsize = crypto_skcipher_ivsize(tfm); const unsigned int blocksize = crypto_skcipher_blocksize(tfm); const unsigned int maxdatasize = (2 * PAGE_SIZE) - TESTMGR_POISON_LEN; @@ -2751,9 +3020,19 @@ static int test_skcipher_vs_generic_impl(const char *driver, /* Check the algorithm properties for consistency. */ - if (tfm->keysize != generic_tfm->keysize) { + if (crypto_skcipher_min_keysize(tfm) != + crypto_skcipher_min_keysize(generic_tfm)) { + pr_err("alg: skcipher: min keysize for %s (%u) doesn't match generic impl (%u)\n", + driver, crypto_skcipher_min_keysize(tfm), + crypto_skcipher_min_keysize(generic_tfm)); + err = -EINVAL; + goto out; + } + + if (maxkeysize != crypto_skcipher_max_keysize(generic_tfm)) { pr_err("alg: skcipher: max keysize for %s (%u) doesn't match generic impl (%u)\n", - driver, tfm->keysize, generic_tfm->keysize); + driver, maxkeysize, + crypto_skcipher_max_keysize(generic_tfm)); err = -EINVAL; goto out; } @@ -2778,7 +3057,7 @@ static int test_skcipher_vs_generic_impl(const char *driver, * the other implementation against them. */ - vec.key = kmalloc(tfm->keysize, GFP_KERNEL); + vec.key = kmalloc(maxkeysize, GFP_KERNEL); vec.iv = kmalloc(ivsize, GFP_KERNEL); vec.ptext = kmalloc(maxdatasize, GFP_KERNEL); vec.ctext = kmalloc(maxdatasize, GFP_KERNEL); @@ -3862,7 +4141,8 @@ static int alg_test_null(const struct alg_test_desc *desc, return 0; } -#define __VECS(tv) { .vecs = tv, .count = ARRAY_SIZE(tv) } +#define ____VECS(tv) .vecs = tv, .count = ARRAY_SIZE(tv) +#define __VECS(tv) { ____VECS(tv) } /* Please keep this list sorted by algorithm name. */ static const struct alg_test_desc alg_test_descs[] = { @@ -4168,7 +4448,10 @@ static const struct alg_test_desc alg_test_descs[] = { .test = alg_test_aead, .fips_allowed = 1, .suite = { - .aead = __VECS(aes_ccm_tv_template) + .aead = { + ____VECS(aes_ccm_tv_template), + .einval_allowed = 1, + } } }, { .alg = "cfb(aes)", @@ -4916,7 +5199,11 @@ static const struct alg_test_desc alg_test_descs[] = { .test = alg_test_aead, .fips_allowed = 1, .suite = { - .aead = __VECS(aes_gcm_rfc4106_tv_template) + .aead = { + ____VECS(aes_gcm_rfc4106_tv_template), + .einval_allowed = 1, + .esp_aad = 1, + } } }, { .alg = "rfc4309(ccm(aes))", @@ -4924,14 +5211,21 @@ static const struct alg_test_desc alg_test_descs[] = { .test = alg_test_aead, .fips_allowed = 1, .suite = { - .aead = __VECS(aes_ccm_rfc4309_tv_template) + .aead = { + ____VECS(aes_ccm_rfc4309_tv_template), + .einval_allowed = 1, + .esp_aad = 1, + } } }, { .alg = "rfc4543(gcm(aes))", .generic_driver = "rfc4543(gcm_base(ctr(aes-generic),ghash-generic))", .test = alg_test_aead, .suite = { - .aead = __VECS(aes_gcm_rfc4543_tv_template) + .aead = { + ____VECS(aes_gcm_rfc4543_tv_template), + .einval_allowed = 1, + } } }, { .alg = "rfc7539(chacha20,poly1305)", @@ -4943,7 +5237,11 @@ static const struct alg_test_desc alg_test_descs[] = { .alg = "rfc7539esp(chacha20,poly1305)", .test = alg_test_aead, .suite = { - .aead = __VECS(rfc7539esp_tv_template) + .aead = { + ____VECS(rfc7539esp_tv_template), + .einval_allowed = 1, + .esp_aad = 1, + } } }, { .alg = "rmd128", |