From 0fae0c1e1d7991ce0dbefdd1c35c14e9d0025cc2 Mon Sep 17 00:00:00 2001 From: Yanjiang Jin Date: Fri, 29 Jul 2016 16:32:09 +0800 Subject: crypto: testmgr - fix !x==y confusion "if (!ret == template[i].fail)" is confusing to compilers (gcc5): crypto/testmgr.c: In function '__test_aead': crypto/testmgr.c:531:12: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses] if (!ret == template[i].fail) { ^ Let there be 'if (template[i].fail == !ret) '. Signed-off-by: Yanjiang Jin Signed-off-by: Herbert Xu --- crypto/testmgr.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'crypto') diff --git a/crypto/testmgr.c b/crypto/testmgr.c index 5c9d5a5e7b65..c2a8bd38ef1f 100644 --- a/crypto/testmgr.c +++ b/crypto/testmgr.c @@ -665,7 +665,7 @@ static int __test_aead(struct crypto_aead *tfm, int enc, memcpy(key, template[i].key, template[i].klen); ret = crypto_aead_setkey(tfm, key, template[i].klen); - if (!ret == template[i].fail) { + if (template[i].fail == !ret) { pr_err("alg: aead%s: setkey failed on test %d for %s: flags=%x\n", d, j, algo, crypto_aead_get_flags(tfm)); goto out; @@ -770,7 +770,7 @@ static int __test_aead(struct crypto_aead *tfm, int enc, memcpy(key, template[i].key, template[i].klen); ret = crypto_aead_setkey(tfm, key, template[i].klen); - if (!ret == template[i].fail) { + if (template[i].fail == !ret) { pr_err("alg: aead%s: setkey failed on chunk test %d for %s: flags=%x\n", d, j, algo, crypto_aead_get_flags(tfm)); goto out; @@ -1023,7 +1023,7 @@ static int test_cipher(struct crypto_cipher *tfm, int enc, ret = crypto_cipher_setkey(tfm, template[i].key, template[i].klen); - if (!ret == template[i].fail) { + if (template[i].fail == !ret) { printk(KERN_ERR "alg: cipher: setkey failed " "on test %d for %s: flags=%x\n", j, algo, crypto_cipher_get_flags(tfm)); @@ -1133,7 +1133,7 @@ static int __test_skcipher(struct crypto_skcipher *tfm, int enc, ret = crypto_skcipher_setkey(tfm, template[i].key, template[i].klen); - if (!ret == template[i].fail) { + if (template[i].fail == !ret) { pr_err("alg: skcipher%s: setkey failed on test %d for %s: flags=%x\n", d, j, algo, crypto_skcipher_get_flags(tfm)); goto out; @@ -1211,7 +1211,7 @@ static int __test_skcipher(struct crypto_skcipher *tfm, int enc, ret = crypto_skcipher_setkey(tfm, template[i].key, template[i].klen); - if (!ret == template[i].fail) { + if (template[i].fail == !ret) { pr_err("alg: skcipher%s: setkey failed on chunk test %d for %s: flags=%x\n", d, j, algo, crypto_skcipher_get_flags(tfm)); goto out; -- cgit v1.2.3 From ddbc73616ccd1825647cd25c47d80e718041ea08 Mon Sep 17 00:00:00 2001 From: Corentin LABBE Date: Wed, 10 Aug 2016 11:29:33 +0200 Subject: crypto: xts - fix a little typo The sentence 'Based on' is misspelled, respell it. Signed-off-by: LABBE Corentin Signed-off-by: Herbert Xu --- crypto/xts.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'crypto') diff --git a/crypto/xts.c b/crypto/xts.c index 26ba5833b994..305343f22a02 100644 --- a/crypto/xts.c +++ b/crypto/xts.c @@ -5,7 +5,7 @@ * * Copyright (c) 2007 Rik Snel * - * Based om ecb.c + * Based on ecb.c * Copyright (c) 2006 Herbert Xu * * This program is free software; you can redistribute it and/or modify it -- cgit v1.2.3 From d89a67134fcc7e863530624fe5a88dde0159cfb8 Mon Sep 17 00:00:00 2001 From: Stephan Mueller Date: Tue, 9 Aug 2016 21:02:36 +0200 Subject: crypto: drbg - do not call drbg_instantiate in healt test When calling the DRBG health test in FIPS mode, the Jitter RNG is not yet present in the kernel crypto API which will cause the instantiation to fail and thus the health test to fail. As the health tests cover the enforcement of various thresholds, invoke the functions that are supposed to enforce the thresholds directly. This patch also saves precious seed. Reported-by: Tapas Sarangi Signed-off-by: Stephan Mueller Signed-off-by: Herbert Xu --- crypto/drbg.c | 15 ++++----------- 1 file changed, 4 insertions(+), 11 deletions(-) (limited to 'crypto') diff --git a/crypto/drbg.c b/crypto/drbg.c index f752da3a7c75..edf3ce04e87f 100644 --- a/crypto/drbg.c +++ b/crypto/drbg.c @@ -1917,6 +1917,8 @@ static inline int __init drbg_healthcheck_sanity(void) return -ENOMEM; mutex_init(&drbg->drbg_mutex); + drbg->core = &drbg_cores[coreref]; + drbg->reseed_threshold = drbg_max_requests(drbg); /* * if the following tests fail, it is likely that there is a buffer @@ -1926,12 +1928,6 @@ static inline int __init drbg_healthcheck_sanity(void) * grave bug. */ - /* get a valid instance of DRBG for following tests */ - ret = drbg_instantiate(drbg, NULL, coreref, pr); - if (ret) { - rc = ret; - goto outbuf; - } max_addtllen = drbg_max_addtl(drbg); max_request_bytes = drbg_max_request_bytes(drbg); drbg_string_fill(&addtl, buf, max_addtllen + 1); @@ -1941,10 +1937,9 @@ static inline int __init drbg_healthcheck_sanity(void) /* overflow max_bits */ len = drbg_generate(drbg, buf, (max_request_bytes + 1), NULL); BUG_ON(0 < len); - drbg_uninstantiate(drbg); /* overflow max addtllen with personalization string */ - ret = drbg_instantiate(drbg, &addtl, coreref, pr); + ret = drbg_seed(drbg, &addtl, false); BUG_ON(0 == ret); /* all tests passed */ rc = 0; @@ -1952,9 +1947,7 @@ static inline int __init drbg_healthcheck_sanity(void) pr_devel("DRBG: Sanity tests for failure code paths successfully " "completed\n"); - drbg_uninstantiate(drbg); -outbuf: - kzfree(drbg); + kfree(drbg); return rc; } -- cgit v1.2.3 From 39457acda9139bb078d1b8f974651a194a397060 Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Fri, 19 Aug 2016 14:19:30 +0200 Subject: crypto: xor - skip speed test if the xor function is selected automatically If the architecture selected the xor function with XOR_SELECT_TEMPLATE the speed result of the do_xor_speed benchmark is of limited value. The speed measurement increases the bootup time a little, which can makes a difference for kernels used in container like virtual machines. Signed-off-by: Martin Schwidefsky Signed-off-by: Herbert Xu --- crypto/xor.c | 40 +++++++++++++++++++--------------------- 1 file changed, 19 insertions(+), 21 deletions(-) (limited to 'crypto') diff --git a/crypto/xor.c b/crypto/xor.c index 35d6b3adf230..b8975d92cd94 100644 --- a/crypto/xor.c +++ b/crypto/xor.c @@ -109,6 +109,18 @@ calibrate_xor_blocks(void) void *b1, *b2; struct xor_block_template *f, *fastest; + fastest = NULL; + +#ifdef XOR_SELECT_TEMPLATE + fastest = XOR_SELECT_TEMPLATE(fastest); + if (fastest) { + printk(KERN_INFO "xor: automatically using best " + "checksumming function %-10s\n", + fastest->name); + goto out; + } +#endif + /* * Note: Since the memory is not actually used for _anything_ but to * test the XOR speed, we don't really want kmemcheck to warn about @@ -126,36 +138,22 @@ calibrate_xor_blocks(void) * all the possible functions, just test the best one */ - fastest = NULL; - -#ifdef XOR_SELECT_TEMPLATE - fastest = XOR_SELECT_TEMPLATE(fastest); -#endif - #define xor_speed(templ) do_xor_speed((templ), b1, b2) - if (fastest) { - printk(KERN_INFO "xor: automatically using best " - "checksumming function:\n"); - xor_speed(fastest); - goto out; - } else { - printk(KERN_INFO "xor: measuring software checksum speed\n"); - XOR_TRY_TEMPLATES; - fastest = template_list; - for (f = fastest; f; f = f->next) - if (f->speed > fastest->speed) - fastest = f; - } + printk(KERN_INFO "xor: measuring software checksum speed\n"); + XOR_TRY_TEMPLATES; + fastest = template_list; + for (f = fastest; f; f = f->next) + if (f->speed > fastest->speed) + fastest = f; printk(KERN_INFO "xor: using function: %s (%d.%03d MB/sec)\n", fastest->name, fastest->speed / 1000, fastest->speed % 1000); #undef xor_speed - out: free_pages((unsigned long)b1, 2); - +out: active_template = fastest; return 0; } -- cgit v1.2.3 From 1a45d7e343251e5396d353c1ae6ab1cebead9766 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Sat, 20 Aug 2016 15:06:51 +0000 Subject: crypto: drbg - fix error return code Fix to return a negative error code from the error handling case instead of 0. Signed-off-by: Wei Yongjun Acked-by: Stephan Mueller Signed-off-by: Herbert Xu --- crypto/drbg.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) (limited to 'crypto') diff --git a/crypto/drbg.c b/crypto/drbg.c index edf3ce04e87f..fb33f7d3b052 100644 --- a/crypto/drbg.c +++ b/crypto/drbg.c @@ -1178,12 +1178,16 @@ static inline int drbg_alloc_state(struct drbg_state *drbg) goto err; drbg->Vbuf = kmalloc(drbg_statelen(drbg) + ret, GFP_KERNEL); - if (!drbg->Vbuf) + if (!drbg->Vbuf) { + ret = -ENOMEM; goto fini; + } drbg->V = PTR_ALIGN(drbg->Vbuf, ret + 1); drbg->Cbuf = kmalloc(drbg_statelen(drbg) + ret, GFP_KERNEL); - if (!drbg->Cbuf) + if (!drbg->Cbuf) { + ret = -ENOMEM; goto fini; + } drbg->C = PTR_ALIGN(drbg->Cbuf, ret + 1); /* scratchpad is only generated for CTR and Hash */ if (drbg->core->flags & DRBG_HMAC) @@ -1199,8 +1203,10 @@ static inline int drbg_alloc_state(struct drbg_state *drbg) if (0 < sb_size) { drbg->scratchpadbuf = kzalloc(sb_size + ret, GFP_KERNEL); - if (!drbg->scratchpadbuf) + if (!drbg->scratchpadbuf) { + ret = -ENOMEM; goto fini; + } drbg->scratchpad = PTR_ALIGN(drbg->scratchpadbuf, ret + 1); } @@ -1999,7 +2005,7 @@ static int __init drbg_init(void) { unsigned int i = 0; /* pointer to drbg_algs */ unsigned int j = 0; /* pointer to drbg_cores */ - int ret = -EFAULT; + int ret; ret = drbg_healthcheck_sanity(); if (ret) @@ -2009,7 +2015,7 @@ static int __init drbg_init(void) pr_info("DRBG: Cannot register all DRBG types" "(slots needed: %zu, slots available: %zu)\n", ARRAY_SIZE(drbg_cores) * 2, ARRAY_SIZE(drbg_algs)); - return ret; + return -EFAULT; } /* -- cgit v1.2.3 From e09287dfef280dbe9f9aa1faa7a125957e9b7fbb Mon Sep 17 00:00:00 2001 From: Stephan Mueller Date: Tue, 23 Aug 2016 10:09:32 +0200 Subject: crypto: rsa - allow keys >= 2048 bits in FIPS mode With a public notification, NIST now allows the use of RSA keys with a modulus >= 2048 bits. The new rule allows any modulus size >= 2048 bits provided that either 2048 or 3072 bits are supported at least so that the entire RSA implementation can be CAVS tested. This patch fixes the inability to boot the kernel in FIPS mode, because certs/x509.genkey defines a 4096 bit RSA key per default. This key causes the RSA signature verification to fail in FIPS mode without the patch below. Signed-off-by: Stephan Mueller Signed-off-by: Herbert Xu --- crypto/rsa_helper.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'crypto') diff --git a/crypto/rsa_helper.c b/crypto/rsa_helper.c index 4df6451e7543..0b66dc824606 100644 --- a/crypto/rsa_helper.c +++ b/crypto/rsa_helper.c @@ -35,8 +35,8 @@ int rsa_get_n(void *context, size_t hdrlen, unsigned char tag, n_sz--; } - /* In FIPS mode only allow key size 2K & 3K */ - if (n_sz != 256 && n_sz != 384) { + /* In FIPS mode only allow key size 2K and higher */ + if (n_sz < 256) { pr_err("RSA: key size not allowed in FIPS mode\n"); return -EINVAL; } -- cgit v1.2.3 From 27c4d548af958233e26ab5b00719ff3e49b3aebe Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Fri, 26 Aug 2016 23:19:39 +0800 Subject: crypto: xor - Fix warning when XOR_SELECT_TEMPLATE is unset This patch fixes an unused label warning triggered when the macro XOR_SELECT_TEMPLATE is not set. Fixes: 39457acda913 ("crypto: xor - skip speed test if the xor...") Reported-by: Stephen Rothwell Suggested-by: Stephen Rothwell Signed-off-by: Herbert Xu --- crypto/xor.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'crypto') diff --git a/crypto/xor.c b/crypto/xor.c index b8975d92cd94..263af9fb45ea 100644 --- a/crypto/xor.c +++ b/crypto/xor.c @@ -24,6 +24,10 @@ #include #include +#ifndef XOR_SELECT_TEMPLATE +#define XOR_SELECT_TEMPLATE(x) (x) +#endif + /* The xor routines to use. */ static struct xor_block_template *active_template; @@ -109,17 +113,14 @@ calibrate_xor_blocks(void) void *b1, *b2; struct xor_block_template *f, *fastest; - fastest = NULL; + fastest = XOR_SELECT_TEMPLATE(NULL); -#ifdef XOR_SELECT_TEMPLATE - fastest = XOR_SELECT_TEMPLATE(fastest); if (fastest) { printk(KERN_INFO "xor: automatically using best " "checksumming function %-10s\n", fastest->name); goto out; } -#endif /* * Note: Since the memory is not actually used for _anything_ but to -- cgit v1.2.3 From 10faa8c0d6c3b22466f97713a9533824a2ea1c57 Mon Sep 17 00:00:00 2001 From: Stephan Mueller Date: Thu, 25 Aug 2016 15:15:01 +0200 Subject: crypto: FIPS - allow tests to be disabled in FIPS mode In FIPS mode, additional restrictions may apply. If these restrictions are violated, the kernel will panic(). This patch allows test vectors for symmetric ciphers to be marked as to be skipped in FIPS mode. Together with the patch, the XTS test vectors where the AES key is identical to the tweak key is disabled in FIPS mode. This test vector violates the FIPS requirement that both keys must be different. Reported-by: Tapas Sarangi Signed-off-by: Stephan Mueller Signed-off-by: Herbert Xu --- crypto/testmgr.c | 9 +++++++++ crypto/testmgr.h | 4 ++++ 2 files changed, 13 insertions(+) (limited to 'crypto') diff --git a/crypto/testmgr.c b/crypto/testmgr.c index c2a8bd38ef1f..0b01c3d062e2 100644 --- a/crypto/testmgr.c +++ b/crypto/testmgr.c @@ -1008,6 +1008,9 @@ static int test_cipher(struct crypto_cipher *tfm, int enc, if (template[i].np) continue; + if (fips_enabled && template[i].fips_skip) + continue; + j++; ret = -EINVAL; @@ -1112,6 +1115,9 @@ static int __test_skcipher(struct crypto_skcipher *tfm, int enc, if (template[i].np && !template[i].also_non_np) continue; + if (fips_enabled && template[i].fips_skip) + continue; + if (template[i].iv) memcpy(iv, template[i].iv, ivsize); else @@ -1198,6 +1204,9 @@ static int __test_skcipher(struct crypto_skcipher *tfm, int enc, if (!template[i].np) continue; + if (fips_enabled && template[i].fips_skip) + continue; + if (template[i].iv) memcpy(iv, template[i].iv, ivsize); else diff --git a/crypto/testmgr.h b/crypto/testmgr.h index acb6bbff781a..e64a4ef9d8ca 100644 --- a/crypto/testmgr.h +++ b/crypto/testmgr.h @@ -59,6 +59,7 @@ struct hash_testvec { * @tap: How to distribute data in @np SGs * @also_non_np: if set to 1, the test will be also done without * splitting data in @np SGs + * @fips_skip: Skip the test vector in FIPS mode */ struct cipher_testvec { @@ -75,6 +76,7 @@ struct cipher_testvec { unsigned char klen; unsigned short ilen; unsigned short rlen; + bool fips_skip; }; struct aead_testvec { @@ -18224,6 +18226,7 @@ static struct cipher_testvec aes_xts_enc_tv_template[] = { "\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00", .klen = 32, + .fips_skip = 1, .iv = "\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00", .input = "\x00\x00\x00\x00\x00\x00\x00\x00" @@ -18566,6 +18569,7 @@ static struct cipher_testvec aes_xts_dec_tv_template[] = { "\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00", .klen = 32, + .fips_skip = 1, .iv = "\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00", .input = "\x91\x7c\xf6\x9e\xbd\x68\xb2\xec" -- cgit v1.2.3 From 2589ad84047f1dbed741b48785680b152db2e5db Mon Sep 17 00:00:00 2001 From: Corentin LABBE Date: Wed, 31 Aug 2016 14:02:57 +0200 Subject: crypto: engine - move crypto engine to its own header This patch move the whole crypto engine API to its own header crypto/engine.h. Signed-off-by: Corentin Labbe Signed-off-by: Herbert Xu --- crypto/crypto_engine.c | 1 + drivers/crypto/omap-aes.c | 1 + drivers/crypto/omap-des.c | 1 + include/crypto/algapi.h | 70 ------------------------------------ include/crypto/engine.h | 90 +++++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 93 insertions(+), 70 deletions(-) create mode 100644 include/crypto/engine.h (limited to 'crypto') diff --git a/crypto/crypto_engine.c b/crypto/crypto_engine.c index a55c82dd48ef..795b6f9412ba 100644 --- a/crypto/crypto_engine.c +++ b/crypto/crypto_engine.c @@ -14,6 +14,7 @@ #include #include +#include #include "internal.h" #define CRYPTO_ENGINE_MAX_QLEN 10 diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c index 4ab53a604312..993e08ecd16f 100644 --- a/drivers/crypto/omap-aes.c +++ b/drivers/crypto/omap-aes.c @@ -36,6 +36,7 @@ #include #include #include +#include #define DST_MAXBURST 4 #define DMA_MIN (DST_MAXBURST * sizeof(u32)) diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c index 5691434ffb2d..dc36e1c96eba 100644 --- a/drivers/crypto/omap-des.c +++ b/drivers/crypto/omap-des.c @@ -39,6 +39,7 @@ #include #include #include +#include #define DST_MAXBURST 2 diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h index 8637cdfe382a..404e9558e879 100644 --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -15,7 +15,6 @@ #include #include #include -#include #include struct crypto_aead; @@ -129,75 +128,6 @@ struct ablkcipher_walk { unsigned int blocksize; }; -#define ENGINE_NAME_LEN 30 -/* - * struct crypto_engine - crypto hardware engine - * @name: the engine name - * @idling: the engine is entering idle state - * @busy: request pump is busy - * @running: the engine is on working - * @cur_req_prepared: current request is prepared - * @list: link with the global crypto engine list - * @queue_lock: spinlock to syncronise access to request queue - * @queue: the crypto queue of the engine - * @rt: whether this queue is set to run as a realtime task - * @prepare_crypt_hardware: a request will soon arrive from the queue - * so the subsystem requests the driver to prepare the hardware - * by issuing this call - * @unprepare_crypt_hardware: there are currently no more requests on the - * queue so the subsystem notifies the driver that it may relax the - * hardware by issuing this call - * @prepare_request: do some prepare if need before handle the current request - * @unprepare_request: undo any work done by prepare_message() - * @crypt_one_request: do encryption for current request - * @kworker: thread struct for request pump - * @kworker_task: pointer to task for request pump kworker thread - * @pump_requests: work struct for scheduling work to the request pump - * @priv_data: the engine private data - * @cur_req: the current request which is on processing - */ -struct crypto_engine { - char name[ENGINE_NAME_LEN]; - bool idling; - bool busy; - bool running; - bool cur_req_prepared; - - struct list_head list; - spinlock_t queue_lock; - struct crypto_queue queue; - - bool rt; - - int (*prepare_crypt_hardware)(struct crypto_engine *engine); - int (*unprepare_crypt_hardware)(struct crypto_engine *engine); - - int (*prepare_request)(struct crypto_engine *engine, - struct ablkcipher_request *req); - int (*unprepare_request)(struct crypto_engine *engine, - struct ablkcipher_request *req); - int (*crypt_one_request)(struct crypto_engine *engine, - struct ablkcipher_request *req); - - struct kthread_worker kworker; - struct task_struct *kworker_task; - struct kthread_work pump_requests; - - void *priv_data; - struct ablkcipher_request *cur_req; -}; - -int crypto_transfer_request(struct crypto_engine *engine, - struct ablkcipher_request *req, bool need_pump); -int crypto_transfer_request_to_engine(struct crypto_engine *engine, - struct ablkcipher_request *req); -void crypto_finalize_request(struct crypto_engine *engine, - struct ablkcipher_request *req, int err); -int crypto_engine_start(struct crypto_engine *engine); -int crypto_engine_stop(struct crypto_engine *engine); -struct crypto_engine *crypto_engine_alloc_init(struct device *dev, bool rt); -int crypto_engine_exit(struct crypto_engine *engine); - extern const struct crypto_type crypto_ablkcipher_type; extern const struct crypto_type crypto_blkcipher_type; diff --git a/include/crypto/engine.h b/include/crypto/engine.h new file mode 100644 index 000000000000..40899bd246ec --- /dev/null +++ b/include/crypto/engine.h @@ -0,0 +1,90 @@ +/* + * Crypto engine API + * + * Copyright (c) 2016 Baolin Wang + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + */ +#ifndef _CRYPTO_ENGINE_H +#define _CRYPTO_ENGINE_H + +#include +#include +#include +#include +#include + +#define ENGINE_NAME_LEN 30 +/* + * struct crypto_engine - crypto hardware engine + * @name: the engine name + * @idling: the engine is entering idle state + * @busy: request pump is busy + * @running: the engine is on working + * @cur_req_prepared: current request is prepared + * @list: link with the global crypto engine list + * @queue_lock: spinlock to syncronise access to request queue + * @queue: the crypto queue of the engine + * @rt: whether this queue is set to run as a realtime task + * @prepare_crypt_hardware: a request will soon arrive from the queue + * so the subsystem requests the driver to prepare the hardware + * by issuing this call + * @unprepare_crypt_hardware: there are currently no more requests on the + * queue so the subsystem notifies the driver that it may relax the + * hardware by issuing this call + * @prepare_request: do some prepare if need before handle the current request + * @unprepare_request: undo any work done by prepare_message() + * @crypt_one_request: do encryption for current request + * @kworker: thread struct for request pump + * @kworker_task: pointer to task for request pump kworker thread + * @pump_requests: work struct for scheduling work to the request pump + * @priv_data: the engine private data + * @cur_req: the current request which is on processing + */ +struct crypto_engine { + char name[ENGINE_NAME_LEN]; + bool idling; + bool busy; + bool running; + bool cur_req_prepared; + + struct list_head list; + spinlock_t queue_lock; + struct crypto_queue queue; + + bool rt; + + int (*prepare_crypt_hardware)(struct crypto_engine *engine); + int (*unprepare_crypt_hardware)(struct crypto_engine *engine); + + int (*prepare_request)(struct crypto_engine *engine, + struct ablkcipher_request *req); + int (*unprepare_request)(struct crypto_engine *engine, + struct ablkcipher_request *req); + int (*crypt_one_request)(struct crypto_engine *engine, + struct ablkcipher_request *req); + + struct kthread_worker kworker; + struct task_struct *kworker_task; + struct kthread_work pump_requests; + + void *priv_data; + struct ablkcipher_request *cur_req; +}; + +int crypto_transfer_request(struct crypto_engine *engine, + struct ablkcipher_request *req, bool need_pump); +int crypto_transfer_request_to_engine(struct crypto_engine *engine, + struct ablkcipher_request *req); +void crypto_finalize_request(struct crypto_engine *engine, + struct ablkcipher_request *req, int err); +int crypto_engine_start(struct crypto_engine *engine); +int crypto_engine_stop(struct crypto_engine *engine); +struct crypto_engine *crypto_engine_alloc_init(struct device *dev, bool rt); +int crypto_engine_exit(struct crypto_engine *engine); + +#endif /* _CRYPTO_ENGINE_H */ -- cgit v1.2.3 From 4cba7cf025f35599f8de3282c8a7278ecc43eea4 Mon Sep 17 00:00:00 2001 From: Corentin LABBE Date: Wed, 31 Aug 2016 14:02:58 +0200 Subject: crypto: engine - permit to enqueue ashash_request The current crypto engine allow only ablkcipher_request to be enqueued. Thus denying any use of it for hardware that also handle hash algo. This patch modify the API for allowing to enqueue ciphers and hash. Since omap-aes/omap-des are the only users, this patch also convert them to the new cryptoengine API. Signed-off-by: Corentin Labbe Signed-off-by: Herbert Xu --- crypto/crypto_engine.c | 186 ++++++++++++++++++++++++++++++++++++---------- drivers/crypto/omap-aes.c | 8 +- drivers/crypto/omap-des.c | 8 +- include/crypto/engine.h | 49 ++++++++---- 4 files changed, 189 insertions(+), 62 deletions(-) (limited to 'crypto') diff --git a/crypto/crypto_engine.c b/crypto/crypto_engine.c index 795b6f9412ba..bfb92ace2c91 100644 --- a/crypto/crypto_engine.c +++ b/crypto/crypto_engine.c @@ -15,13 +15,11 @@ #include #include #include +#include #include "internal.h" #define CRYPTO_ENGINE_MAX_QLEN 10 -void crypto_finalize_request(struct crypto_engine *engine, - struct ablkcipher_request *req, int err); - /** * crypto_pump_requests - dequeue one request from engine queue to process * @engine: the hardware engine @@ -35,10 +33,11 @@ static void crypto_pump_requests(struct crypto_engine *engine, bool in_kthread) { struct crypto_async_request *async_req, *backlog; - struct ablkcipher_request *req; + struct ahash_request *hreq; + struct ablkcipher_request *breq; unsigned long flags; bool was_busy = false; - int ret; + int ret, rtype; spin_lock_irqsave(&engine->queue_lock, flags); @@ -83,9 +82,7 @@ static void crypto_pump_requests(struct crypto_engine *engine, if (!async_req) goto out; - req = ablkcipher_request_cast(async_req); - - engine->cur_req = req; + engine->cur_req = async_req; if (backlog) backlog->complete(backlog, -EINPROGRESS); @@ -96,6 +93,7 @@ static void crypto_pump_requests(struct crypto_engine *engine, spin_unlock_irqrestore(&engine->queue_lock, flags); + rtype = crypto_tfm_alg_type(engine->cur_req->tfm); /* Until here we get the request need to be encrypted successfully */ if (!was_busy && engine->prepare_crypt_hardware) { ret = engine->prepare_crypt_hardware(engine); @@ -105,24 +103,55 @@ static void crypto_pump_requests(struct crypto_engine *engine, } } - if (engine->prepare_request) { - ret = engine->prepare_request(engine, engine->cur_req); + switch (rtype) { + case CRYPTO_ALG_TYPE_AHASH: + hreq = ahash_request_cast(engine->cur_req); + if (engine->prepare_hash_request) { + ret = engine->prepare_hash_request(engine, hreq); + if (ret) { + pr_err("failed to prepare request: %d\n", ret); + goto req_err; + } + engine->cur_req_prepared = true; + } + ret = engine->hash_one_request(engine, hreq); if (ret) { - pr_err("failed to prepare request: %d\n", ret); + pr_err("failed to hash one request from queue\n"); goto req_err; } - engine->cur_req_prepared = true; - } - - ret = engine->crypt_one_request(engine, engine->cur_req); - if (ret) { - pr_err("failed to crypt one request from queue\n"); - goto req_err; + return; + case CRYPTO_ALG_TYPE_ABLKCIPHER: + breq = ablkcipher_request_cast(engine->cur_req); + if (engine->prepare_cipher_request) { + ret = engine->prepare_cipher_request(engine, breq); + if (ret) { + pr_err("failed to prepare request: %d\n", ret); + goto req_err; + } + engine->cur_req_prepared = true; + } + ret = engine->cipher_one_request(engine, breq); + if (ret) { + pr_err("failed to cipher one request from queue\n"); + goto req_err; + } + return; + default: + pr_err("failed to prepare request of unknown type\n"); + return; } - return; req_err: - crypto_finalize_request(engine, engine->cur_req, ret); + switch (rtype) { + case CRYPTO_ALG_TYPE_AHASH: + hreq = ahash_request_cast(engine->cur_req); + crypto_finalize_hash_request(engine, hreq, ret); + break; + case CRYPTO_ALG_TYPE_ABLKCIPHER: + breq = ablkcipher_request_cast(engine->cur_req); + crypto_finalize_cipher_request(engine, breq, ret); + break; + } return; out: @@ -138,12 +167,14 @@ static void crypto_pump_work(struct kthread_work *work) } /** - * crypto_transfer_request - transfer the new request into the engine queue + * crypto_transfer_cipher_request - transfer the new request into the + * enginequeue * @engine: the hardware engine * @req: the request need to be listed into the engine queue */ -int crypto_transfer_request(struct crypto_engine *engine, - struct ablkcipher_request *req, bool need_pump) +int crypto_transfer_cipher_request(struct crypto_engine *engine, + struct ablkcipher_request *req, + bool need_pump) { unsigned long flags; int ret; @@ -163,46 +194,125 @@ int crypto_transfer_request(struct crypto_engine *engine, spin_unlock_irqrestore(&engine->queue_lock, flags); return ret; } -EXPORT_SYMBOL_GPL(crypto_transfer_request); +EXPORT_SYMBOL_GPL(crypto_transfer_cipher_request); + +/** + * crypto_transfer_cipher_request_to_engine - transfer one request to list + * into the engine queue + * @engine: the hardware engine + * @req: the request need to be listed into the engine queue + */ +int crypto_transfer_cipher_request_to_engine(struct crypto_engine *engine, + struct ablkcipher_request *req) +{ + return crypto_transfer_cipher_request(engine, req, true); +} +EXPORT_SYMBOL_GPL(crypto_transfer_cipher_request_to_engine); + +/** + * crypto_transfer_hash_request - transfer the new request into the + * enginequeue + * @engine: the hardware engine + * @req: the request need to be listed into the engine queue + */ +int crypto_transfer_hash_request(struct crypto_engine *engine, + struct ahash_request *req, bool need_pump) +{ + unsigned long flags; + int ret; + + spin_lock_irqsave(&engine->queue_lock, flags); + + if (!engine->running) { + spin_unlock_irqrestore(&engine->queue_lock, flags); + return -ESHUTDOWN; + } + + ret = ahash_enqueue_request(&engine->queue, req); + + if (!engine->busy && need_pump) + queue_kthread_work(&engine->kworker, &engine->pump_requests); + + spin_unlock_irqrestore(&engine->queue_lock, flags); + return ret; +} +EXPORT_SYMBOL_GPL(crypto_transfer_hash_request); /** - * crypto_transfer_request_to_engine - transfer one request to list into the - * engine queue + * crypto_transfer_hash_request_to_engine - transfer one request to list + * into the engine queue * @engine: the hardware engine * @req: the request need to be listed into the engine queue */ -int crypto_transfer_request_to_engine(struct crypto_engine *engine, - struct ablkcipher_request *req) +int crypto_transfer_hash_request_to_engine(struct crypto_engine *engine, + struct ahash_request *req) { - return crypto_transfer_request(engine, req, true); + return crypto_transfer_hash_request(engine, req, true); } -EXPORT_SYMBOL_GPL(crypto_transfer_request_to_engine); +EXPORT_SYMBOL_GPL(crypto_transfer_hash_request_to_engine); /** - * crypto_finalize_request - finalize one request if the request is done + * crypto_finalize_cipher_request - finalize one request if the request is done * @engine: the hardware engine * @req: the request need to be finalized * @err: error number */ -void crypto_finalize_request(struct crypto_engine *engine, - struct ablkcipher_request *req, int err) +void crypto_finalize_cipher_request(struct crypto_engine *engine, + struct ablkcipher_request *req, int err) { unsigned long flags; bool finalize_cur_req = false; int ret; spin_lock_irqsave(&engine->queue_lock, flags); - if (engine->cur_req == req) + if (engine->cur_req == &req->base) finalize_cur_req = true; spin_unlock_irqrestore(&engine->queue_lock, flags); if (finalize_cur_req) { - if (engine->cur_req_prepared && engine->unprepare_request) { - ret = engine->unprepare_request(engine, req); + if (engine->cur_req_prepared && + engine->unprepare_cipher_request) { + ret = engine->unprepare_cipher_request(engine, req); if (ret) pr_err("failed to unprepare request\n"); } + spin_lock_irqsave(&engine->queue_lock, flags); + engine->cur_req = NULL; + engine->cur_req_prepared = false; + spin_unlock_irqrestore(&engine->queue_lock, flags); + } + + req->base.complete(&req->base, err); + queue_kthread_work(&engine->kworker, &engine->pump_requests); +} +EXPORT_SYMBOL_GPL(crypto_finalize_cipher_request); + +/** + * crypto_finalize_hash_request - finalize one request if the request is done + * @engine: the hardware engine + * @req: the request need to be finalized + * @err: error number + */ +void crypto_finalize_hash_request(struct crypto_engine *engine, + struct ahash_request *req, int err) +{ + unsigned long flags; + bool finalize_cur_req = false; + int ret; + + spin_lock_irqsave(&engine->queue_lock, flags); + if (engine->cur_req == &req->base) + finalize_cur_req = true; + spin_unlock_irqrestore(&engine->queue_lock, flags); + + if (finalize_cur_req) { + if (engine->cur_req_prepared && + engine->unprepare_hash_request) { + ret = engine->unprepare_hash_request(engine, req); + if (ret) + pr_err("failed to unprepare request\n"); + } spin_lock_irqsave(&engine->queue_lock, flags); engine->cur_req = NULL; engine->cur_req_prepared = false; @@ -213,7 +323,7 @@ void crypto_finalize_request(struct crypto_engine *engine, queue_kthread_work(&engine->kworker, &engine->pump_requests); } -EXPORT_SYMBOL_GPL(crypto_finalize_request); +EXPORT_SYMBOL_GPL(crypto_finalize_hash_request); /** * crypto_engine_start - start the hardware engine @@ -250,7 +360,7 @@ EXPORT_SYMBOL_GPL(crypto_engine_start); int crypto_engine_stop(struct crypto_engine *engine) { unsigned long flags; - unsigned limit = 500; + unsigned int limit = 500; int ret = 0; spin_lock_irqsave(&engine->queue_lock, flags); diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c index 993e08ecd16f..3483ab66b1ca 100644 --- a/drivers/crypto/omap-aes.c +++ b/drivers/crypto/omap-aes.c @@ -520,7 +520,7 @@ static void omap_aes_finish_req(struct omap_aes_dev *dd, int err) pr_debug("err: %d\n", err); - crypto_finalize_request(dd->engine, req, err); + crypto_finalize_cipher_request(dd->engine, req, err); } static int omap_aes_crypt_dma_stop(struct omap_aes_dev *dd) @@ -593,7 +593,7 @@ static int omap_aes_handle_queue(struct omap_aes_dev *dd, struct ablkcipher_request *req) { if (req) - return crypto_transfer_request_to_engine(dd->engine, req); + return crypto_transfer_cipher_request_to_engine(dd->engine, req); return 0; } @@ -1209,8 +1209,8 @@ static int omap_aes_probe(struct platform_device *pdev) if (!dd->engine) goto err_algs; - dd->engine->prepare_request = omap_aes_prepare_req; - dd->engine->crypt_one_request = omap_aes_crypt_req; + dd->engine->prepare_cipher_request = omap_aes_prepare_req; + dd->engine->cipher_one_request = omap_aes_crypt_req; err = crypto_engine_start(dd->engine); if (err) goto err_engine; diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c index dc36e1c96eba..c0a28b1c66e4 100644 --- a/drivers/crypto/omap-des.c +++ b/drivers/crypto/omap-des.c @@ -507,7 +507,7 @@ static void omap_des_finish_req(struct omap_des_dev *dd, int err) pr_debug("err: %d\n", err); pm_runtime_put(dd->dev); - crypto_finalize_request(dd->engine, req, err); + crypto_finalize_cipher_request(dd->engine, req, err); } static int omap_des_crypt_dma_stop(struct omap_des_dev *dd) @@ -575,7 +575,7 @@ static int omap_des_handle_queue(struct omap_des_dev *dd, struct ablkcipher_request *req) { if (req) - return crypto_transfer_request_to_engine(dd->engine, req); + return crypto_transfer_cipher_request_to_engine(dd->engine, req); return 0; } @@ -1099,8 +1099,8 @@ static int omap_des_probe(struct platform_device *pdev) if (!dd->engine) goto err_algs; - dd->engine->prepare_request = omap_des_prepare_req; - dd->engine->crypt_one_request = omap_des_crypt_req; + dd->engine->prepare_cipher_request = omap_des_prepare_req; + dd->engine->cipher_one_request = omap_des_crypt_req; err = crypto_engine_start(dd->engine); if (err) goto err_engine; diff --git a/include/crypto/engine.h b/include/crypto/engine.h index 40899bd246ec..04eb5c77addd 100644 --- a/include/crypto/engine.h +++ b/include/crypto/engine.h @@ -17,6 +17,7 @@ #include #include #include +#include #define ENGINE_NAME_LEN 30 /* @@ -36,9 +37,12 @@ * @unprepare_crypt_hardware: there are currently no more requests on the * queue so the subsystem notifies the driver that it may relax the * hardware by issuing this call - * @prepare_request: do some prepare if need before handle the current request - * @unprepare_request: undo any work done by prepare_message() - * @crypt_one_request: do encryption for current request + * @prepare_cipher_request: do some prepare if need before handle the current request + * @unprepare_cipher_request: undo any work done by prepare_cipher_request() + * @cipher_one_request: do encryption for current request + * @prepare_hash_request: do some prepare if need before handle the current request + * @unprepare_hash_request: undo any work done by prepare_hash_request() + * @hash_one_request: do hash for current request * @kworker: thread struct for request pump * @kworker_task: pointer to task for request pump kworker thread * @pump_requests: work struct for scheduling work to the request pump @@ -61,27 +65,40 @@ struct crypto_engine { int (*prepare_crypt_hardware)(struct crypto_engine *engine); int (*unprepare_crypt_hardware)(struct crypto_engine *engine); - int (*prepare_request)(struct crypto_engine *engine, - struct ablkcipher_request *req); - int (*unprepare_request)(struct crypto_engine *engine, - struct ablkcipher_request *req); - int (*crypt_one_request)(struct crypto_engine *engine, - struct ablkcipher_request *req); + int (*prepare_cipher_request)(struct crypto_engine *engine, + struct ablkcipher_request *req); + int (*unprepare_cipher_request)(struct crypto_engine *engine, + struct ablkcipher_request *req); + int (*prepare_hash_request)(struct crypto_engine *engine, + struct ahash_request *req); + int (*unprepare_hash_request)(struct crypto_engine *engine, + struct ahash_request *req); + int (*cipher_one_request)(struct crypto_engine *engine, + struct ablkcipher_request *req); + int (*hash_one_request)(struct crypto_engine *engine, + struct ahash_request *req); struct kthread_worker kworker; struct task_struct *kworker_task; struct kthread_work pump_requests; void *priv_data; - struct ablkcipher_request *cur_req; + struct crypto_async_request *cur_req; }; -int crypto_transfer_request(struct crypto_engine *engine, - struct ablkcipher_request *req, bool need_pump); -int crypto_transfer_request_to_engine(struct crypto_engine *engine, - struct ablkcipher_request *req); -void crypto_finalize_request(struct crypto_engine *engine, - struct ablkcipher_request *req, int err); +int crypto_transfer_cipher_request(struct crypto_engine *engine, + struct ablkcipher_request *req, + bool need_pump); +int crypto_transfer_cipher_request_to_engine(struct crypto_engine *engine, + struct ablkcipher_request *req); +int crypto_transfer_hash_request(struct crypto_engine *engine, + struct ahash_request *req, bool need_pump); +int crypto_transfer_hash_request_to_engine(struct crypto_engine *engine, + struct ahash_request *req); +void crypto_finalize_cipher_request(struct crypto_engine *engine, + struct ablkcipher_request *req, int err); +void crypto_finalize_hash_request(struct crypto_engine *engine, + struct ahash_request *req, int err); int crypto_engine_start(struct crypto_engine *engine); int crypto_engine_stop(struct crypto_engine *engine); struct crypto_engine *crypto_engine_alloc_init(struct device *dev, bool rt); -- cgit v1.2.3 From 493b2ed3f7603a15ff738553384d5a4510ffeb95 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Thu, 1 Sep 2016 17:16:44 +0800 Subject: crypto: algif_hash - Handle NULL hashes correctly Right now attempting to read an empty hash simply returns zeroed bytes, this patch corrects this by calling the digest function using an empty input. Reported-by: Russell King - ARM Linux Signed-off-by: Herbert Xu --- crypto/algif_hash.c | 73 ++++++++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 61 insertions(+), 12 deletions(-) (limited to 'crypto') diff --git a/crypto/algif_hash.c b/crypto/algif_hash.c index 68a5ceaa04c8..2d8466f9e49b 100644 --- a/crypto/algif_hash.c +++ b/crypto/algif_hash.c @@ -39,6 +39,37 @@ struct algif_hash_tfm { bool has_key; }; +static int hash_alloc_result(struct sock *sk, struct hash_ctx *ctx) +{ + unsigned ds; + + if (ctx->result) + return 0; + + ds = crypto_ahash_digestsize(crypto_ahash_reqtfm(&ctx->req)); + + ctx->result = sock_kmalloc(sk, ds, GFP_KERNEL); + if (!ctx->result) + return -ENOMEM; + + memset(ctx->result, 0, ds); + + return 0; +} + +static void hash_free_result(struct sock *sk, struct hash_ctx *ctx) +{ + unsigned ds; + + if (!ctx->result) + return; + + ds = crypto_ahash_digestsize(crypto_ahash_reqtfm(&ctx->req)); + + sock_kzfree_s(sk, ctx->result, ds); + ctx->result = NULL; +} + static int hash_sendmsg(struct socket *sock, struct msghdr *msg, size_t ignored) { @@ -54,6 +85,9 @@ static int hash_sendmsg(struct socket *sock, struct msghdr *msg, lock_sock(sk); if (!ctx->more) { + if ((msg->msg_flags & MSG_MORE)) + hash_free_result(sk, ctx); + err = af_alg_wait_for_completion(crypto_ahash_init(&ctx->req), &ctx->completion); if (err) @@ -90,6 +124,10 @@ static int hash_sendmsg(struct socket *sock, struct msghdr *msg, ctx->more = msg->msg_flags & MSG_MORE; if (!ctx->more) { + err = hash_alloc_result(sk, ctx); + if (err) + goto unlock; + ahash_request_set_crypt(&ctx->req, NULL, ctx->result, 0); err = af_alg_wait_for_completion(crypto_ahash_final(&ctx->req), &ctx->completion); @@ -116,6 +154,13 @@ static ssize_t hash_sendpage(struct socket *sock, struct page *page, sg_init_table(ctx->sgl.sg, 1); sg_set_page(ctx->sgl.sg, page, size, offset); + if (!(flags & MSG_MORE)) { + err = hash_alloc_result(sk, ctx); + if (err) + goto unlock; + } else if (!ctx->more) + hash_free_result(sk, ctx); + ahash_request_set_crypt(&ctx->req, ctx->sgl.sg, ctx->result, size); if (!(flags & MSG_MORE)) { @@ -153,6 +198,7 @@ static int hash_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, struct alg_sock *ask = alg_sk(sk); struct hash_ctx *ctx = ask->private; unsigned ds = crypto_ahash_digestsize(crypto_ahash_reqtfm(&ctx->req)); + bool result; int err; if (len > ds) @@ -161,17 +207,29 @@ static int hash_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, msg->msg_flags |= MSG_TRUNC; lock_sock(sk); + result = ctx->result; + err = hash_alloc_result(sk, ctx); + if (err) + goto unlock; + + ahash_request_set_crypt(&ctx->req, NULL, ctx->result, 0); + if (ctx->more) { ctx->more = 0; - ahash_request_set_crypt(&ctx->req, NULL, ctx->result, 0); err = af_alg_wait_for_completion(crypto_ahash_final(&ctx->req), &ctx->completion); if (err) goto unlock; + } else if (!result) { + err = af_alg_wait_for_completion( + crypto_ahash_digest(&ctx->req), + &ctx->completion); } err = memcpy_to_msg(msg, ctx->result, len); + hash_free_result(sk, ctx); + unlock: release_sock(sk); @@ -394,8 +452,7 @@ static void hash_sock_destruct(struct sock *sk) struct alg_sock *ask = alg_sk(sk); struct hash_ctx *ctx = ask->private; - sock_kzfree_s(sk, ctx->result, - crypto_ahash_digestsize(crypto_ahash_reqtfm(&ctx->req))); + hash_free_result(sk, ctx); sock_kfree_s(sk, ctx, ctx->len); af_alg_release_parent(sk); } @@ -407,20 +464,12 @@ static int hash_accept_parent_nokey(void *private, struct sock *sk) struct algif_hash_tfm *tfm = private; struct crypto_ahash *hash = tfm->hash; unsigned len = sizeof(*ctx) + crypto_ahash_reqsize(hash); - unsigned ds = crypto_ahash_digestsize(hash); ctx = sock_kmalloc(sk, len, GFP_KERNEL); if (!ctx) return -ENOMEM; - ctx->result = sock_kmalloc(sk, ds, GFP_KERNEL); - if (!ctx->result) { - sock_kfree_s(sk, ctx, len); - return -ENOMEM; - } - - memset(ctx->result, 0, ds); - + ctx->result = NULL; ctx->len = len; ctx->more = 0; af_alg_init_completion(&ctx->completion); -- cgit v1.2.3 From 36e09e1f874baf581604a76ce81aae0538eb0a23 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Tue, 13 Sep 2016 04:27:54 +0900 Subject: crypto: squash lines for simple wrapper functions Remove unneeded variables and assignments. Signed-off-by: Masahiro Yamada Signed-off-by: Herbert Xu --- crypto/crct10dif_generic.c | 5 +---- crypto/mcryptd.c | 7 +------ drivers/crypto/hifn_795x.c | 12 ++---------- 3 files changed, 4 insertions(+), 20 deletions(-) (limited to 'crypto') diff --git a/crypto/crct10dif_generic.c b/crypto/crct10dif_generic.c index c1229614c7e3..8e94e29dc6fc 100644 --- a/crypto/crct10dif_generic.c +++ b/crypto/crct10dif_generic.c @@ -107,10 +107,7 @@ static struct shash_alg alg = { static int __init crct10dif_mod_init(void) { - int ret; - - ret = crypto_register_shash(&alg); - return ret; + return crypto_register_shash(&alg); } static void __exit crct10dif_mod_fini(void) diff --git a/crypto/mcryptd.c b/crypto/mcryptd.c index 86fb59b109a9..94ee44acd465 100644 --- a/crypto/mcryptd.c +++ b/crypto/mcryptd.c @@ -612,12 +612,7 @@ EXPORT_SYMBOL_GPL(mcryptd_alloc_ahash); int ahash_mcryptd_digest(struct ahash_request *desc) { - int err; - - err = crypto_ahash_init(desc) ?: - ahash_mcryptd_finup(desc); - - return err; + return crypto_ahash_init(desc) ?: ahash_mcryptd_finup(desc); } int ahash_mcryptd_update(struct ahash_request *desc) diff --git a/drivers/crypto/hifn_795x.c b/drivers/crypto/hifn_795x.c index eee2c7e6c299..e09d4055b19e 100644 --- a/drivers/crypto/hifn_795x.c +++ b/drivers/crypto/hifn_795x.c @@ -636,20 +636,12 @@ struct hifn_request_context { static inline u32 hifn_read_0(struct hifn_device *dev, u32 reg) { - u32 ret; - - ret = readl(dev->bar[0] + reg); - - return ret; + return readl(dev->bar[0] + reg); } static inline u32 hifn_read_1(struct hifn_device *dev, u32 reg) { - u32 ret; - - ret = readl(dev->bar[1] + reg); - - return ret; + return readl(dev->bar[1] + reg); } static inline void hifn_write_0(struct hifn_device *dev, u32 reg, u32 val) -- cgit v1.2.3 From a397ba829d7f8aff4c90af3704573a28ccd61a59 Mon Sep 17 00:00:00 2001 From: Marcelo Cerri Date: Wed, 28 Sep 2016 13:42:09 -0300 Subject: crypto: ghash-generic - move common definitions to a new header file Move common values and types used by ghash-generic to a new header file so drivers can directly use ghash-generic as a fallback implementation. Fixes: cc333cd68dfa ("crypto: vmx - Adding GHASH routines for VMX module") Cc: stable@vger.kernel.org Signed-off-by: Marcelo Cerri Signed-off-by: Herbert Xu --- crypto/ghash-generic.c | 13 +------------ include/crypto/ghash.h | 23 +++++++++++++++++++++++ 2 files changed, 24 insertions(+), 12 deletions(-) create mode 100644 include/crypto/ghash.h (limited to 'crypto') diff --git a/crypto/ghash-generic.c b/crypto/ghash-generic.c index bac70995e064..12ad3e3a84e3 100644 --- a/crypto/ghash-generic.c +++ b/crypto/ghash-generic.c @@ -14,24 +14,13 @@ #include #include +#include #include #include #include #include #include -#define GHASH_BLOCK_SIZE 16 -#define GHASH_DIGEST_SIZE 16 - -struct ghash_ctx { - struct gf128mul_4k *gf128; -}; - -struct ghash_desc_ctx { - u8 buffer[GHASH_BLOCK_SIZE]; - u32 bytes; -}; - static int ghash_init(struct shash_desc *desc) { struct ghash_desc_ctx *dctx = shash_desc_ctx(desc); diff --git a/include/crypto/ghash.h b/include/crypto/ghash.h new file mode 100644 index 000000000000..2a61c9bbab8f --- /dev/null +++ b/include/crypto/ghash.h @@ -0,0 +1,23 @@ +/* + * Common values for GHASH algorithms + */ + +#ifndef __CRYPTO_GHASH_H__ +#define __CRYPTO_GHASH_H__ + +#include +#include + +#define GHASH_BLOCK_SIZE 16 +#define GHASH_DIGEST_SIZE 16 + +struct ghash_ctx { + struct gf128mul_4k *gf128; +}; + +struct ghash_desc_ctx { + u8 buffer[GHASH_BLOCK_SIZE]; + u32 bytes; +}; + +#endif -- cgit v1.2.3 From 50d2e6dc1f83db0563c7d6603967bf9585ce934b Mon Sep 17 00:00:00 2001 From: Ondrej Mosnáček Date: Fri, 23 Sep 2016 10:47:32 +0200 Subject: crypto: gcm - Fix IV buffer size in crypto_gcm_setkey The cipher block size for GCM is 16 bytes, and thus the CTR transform used in crypto_gcm_setkey() will also expect a 16-byte IV. However, the code currently reserves only 8 bytes for the IV, causing an out-of-bounds access in the CTR transform. This patch fixes the issue by setting the size of the IV buffer to 16 bytes. Fixes: 84c911523020 ("[CRYPTO] gcm: Add support for async ciphers") Signed-off-by: Ondrej Mosnacek Signed-off-by: Herbert Xu --- crypto/gcm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'crypto') diff --git a/crypto/gcm.c b/crypto/gcm.c index 70a892e87ccb..f624ac98c94e 100644 --- a/crypto/gcm.c +++ b/crypto/gcm.c @@ -117,7 +117,7 @@ static int crypto_gcm_setkey(struct crypto_aead *aead, const u8 *key, struct crypto_skcipher *ctr = ctx->ctr; struct { be128 hash; - u8 iv[8]; + u8 iv[16]; struct crypto_gcm_setkey_result result; -- cgit v1.2.3 From 7bcb87bca2f51226f3ec382fcd3ff52cc15747bb Mon Sep 17 00:00:00 2001 From: Jan Stancek Date: Wed, 28 Sep 2016 16:38:37 +0200 Subject: crypto: testmgr - add guard to dst buffer for ahash_export Add a guard to 'state' buffer and warn if its consistency after call to crypto_ahash_export() changes, so that any write that goes beyond advertised statesize (and thus causing potential memory corruption [1]) is more visible. [1] https://marc.info/?l=linux-crypto-vger&m=147467656516085 Signed-off-by: Jan Stancek Cc: Herbert Xu Cc: Marcelo Cerri Signed-off-by: Herbert Xu --- crypto/testmgr.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'crypto') diff --git a/crypto/testmgr.c b/crypto/testmgr.c index 0b01c3d062e2..62dffa0028ac 100644 --- a/crypto/testmgr.c +++ b/crypto/testmgr.c @@ -209,16 +209,19 @@ static int ahash_partial_update(struct ahash_request **preq, char *state; struct ahash_request *req; int statesize, ret = -EINVAL; + const char guard[] = { 0x00, 0xba, 0xad, 0x00 }; req = *preq; statesize = crypto_ahash_statesize( crypto_ahash_reqtfm(req)); - state = kmalloc(statesize, GFP_KERNEL); + state = kmalloc(statesize + sizeof(guard), GFP_KERNEL); if (!state) { pr_err("alt: hash: Failed to alloc state for %s\n", algo); goto out_nostate; } + memcpy(state + statesize, guard, sizeof(guard)); ret = crypto_ahash_export(req, state); + WARN_ON(memcmp(state + statesize, guard, sizeof(guard))); if (ret) { pr_err("alt: hash: Failed to export() for %s\n", algo); goto out; -- cgit v1.2.3