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2016-09-07crypto: cryptd - initialize child shash_desc on importArd Biesheuvel1-2/+7
When calling .import() on a cryptd ahash_request, the structure members that describe the child transform in the shash_desc need to be initialized like they are when calling .init() Cc: stable@vger.kernel.org Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-08-31crypto: cryptd - Use correct tfm object for AEAD trackingHerbert Xu1-1/+2
The AEAD code path incorrectly uses the child tfm to track the cryptd refcnt, and then potentially frees the child tfm. Fixes: 81760ea6a95a ("crypto: cryptd - Add helpers to check...") Reported-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-06-23crypto: cryptd - Add helpers to check whether a tfm is queuedHerbert Xu1-19/+113
This patch adds helpers to check whether a given tfm is currently queued. This is meant to be used by ablk_helper and similar entities to ensure that no reordering is introduced because of requests queued in cryptd with respect to requests being processed in softirq context. The per-cpu queue length limit is also increased to 1000 in line with network limits. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-12-04crypto: cryptd - Assign statesize properlyWang, Rui Y1-0/+1
cryptd_create_hash() fails by returning -EINVAL. It is because after 8996eafdc ("crypto: ahash - ensure statesize is non-zero") all ahash drivers must have a non-zero statesize. This patch fixes the problem by properly assigning the statesize. Signed-off-by: Rui Wang <rui.y.wang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-11-27crypto: cryptod - use crypto_skcipher_type() for getting skcipher typeAlexander Kuleshov1-2/+1
The <linux/crypto.h> provides inline function - crypto_skcipher_type(). Let's use it in the cryptd_alloc_ablkcipher() instead of direct calculation. Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-08-17crypto: aead - Remove CRYPTO_ALG_AEAD_NEW flagHerbert Xu1-5/+3
This patch removes the CRYPTO_ALG_AEAD_NEW flag now that everyone has been converted. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-08-17crypto: cryptd - Remove reference to crypto_aead_crtHerbert Xu1-2/+2
Pretty soon the crypto_aead encrypt/decrypt hooks will disappear as they are now always identical to those in struct aead_alg. This patch replaces the references to these hooks with the ones from aead_alg instead. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-07-14crypto: cryptd - Propagate new AEAD implementation flagHerbert Xu1-5/+6
This patch allows the CRYPTO_ALG_AEAD_NEW flag to be propagated. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-07-07crypto: cryptd - Fix AEAD request context corruptionHerbert Xu1-4/+8
The AEAD version of cryptd uses the same context for its own state as well as that of the child. In doing so it did not maintain the proper ordering, thus resulting in potential state corruption where the child will overwrite the state stored by cryptd. This patch fixes and also sets the request size properly. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-03crypto: cryptd - Convert to new AEAD interfaceHerbert Xu1-35/+29
This patch converts cryptd to the new AEAD interface. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-03crypto: cryptd - Add setkey/setauthsize functions for AEADHerbert Xu1-2/+20
This patch adds setkey and setauthsize for cryptd AEAD. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-22crypto: cryptd - Use crypto_grab_aeadHerbert Xu1-23/+37
As AEAD has switched over to using frontend types, the function crypto_init_spawn must not be used since it does not specify a frontend type. Otherwise it leads to a crash when the spawn is used. This patch fixes it by switching over to crypto_grab_aead instead. Fixes: 5d1d65f8bea6 ("crypto: aead - Convert top level interface to new style") Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-13crypto: cryptd - Use crypto_aead_set_reqsize helperHerbert Xu1-1/+2
This patch uses the crypto_aead_set_reqsize helper to avoid directly touching the internals of aead. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-03-31crypto: cryptd - process CRYPTO_ALG_INTERNALStephan Mueller1-8/+41
The cryptd is used as a wrapper around internal ciphers. Therefore, the cryptd must process the internal cipher by marking cryptd as internal if the underlying cipher is an internal cipher. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-11-26crypto: include crypto- module prefix in templateKees Cook1-0/+1
This adds the module loading prefix "crypto-" to the template lookup as well. For example, attempting to load 'vfat(blowfish)' via AF_ALG now correctly includes the "crypto-" prefix at every level, correctly rejecting "vfat": net-pf-38 algif-hash crypto-vfat(blowfish) crypto-vfat(blowfish)-all crypto-vfat Reported-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-08-01crypto: Resolve shadow warningsMark Rustad1-6/+6
Change formal parameters to not clash with global names to eliminate many W=2 warnings. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2012-10-24crypto: cryptd - disable softirqs in cryptd_queue_worker to prevent data ↵Jussi Kivilinna1-3/+8
corruption cryptd_queue_worker attempts to prevent simultaneous accesses to crypto workqueue by cryptd_enqueue_request using preempt_disable/preempt_enable. However cryptd_enqueue_request might be called from softirq context, so add local_bh_disable/local_bh_enable to prevent data corruption and panics. Bug report at http://marc.info/?l=linux-crypto-vger&m=134858649616319&w=2 v2: - Disable software interrupts instead of hardware interrupts Cc: stable@vger.kernel.org Reported-by: Gurucharan Shetty <gurucharan.shetty@gmail.com> Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2011-08-20crypto: cryptd - Use subsys_initcall to prevent races with aesniHerbert Xu1-1/+1
As cryptd is depeneded on by other algorithms such as aesni-intel, it needs to be registered before them. When everything is built as modules, this occurs naturally. However, for this to work when they are built-in, we need to use subsys_initcall in cryptd. Tested-by: Josh Boyer <jwboyer@redhat.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2010-09-20crypto: cryptd - Adding the AEAD interface type support to cryptdAdrian Hoban1-3/+203
This patch adds AEAD support into the cryptd framework. Having AEAD support in cryptd enables crypto drivers that use the AEAD interface type (such as the patch for AEAD based RFC4106 AES-GCM implementation using Intel New Instructions) to leverage cryptd for asynchronous processing. Signed-off-by: Adrian Hoban <adrian.hoban@intel.com> Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com> Signed-off-by: Gabriele Paoloni <gabriele.paoloni@intel.com> Signed-off-by: Aidan O'Mahony <aidan.o.mahony@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2010-02-17percpu: add __percpu sparse annotations to what's leftTejun Heo1-1/+1
Add __percpu sparse annotations to places which didn't make it in one of the previous patches. All converions are trivial. These annotations are to make sparse consider percpu variables to be in a different address space and warn if accessed without going through percpu accessors. This patch doesn't affect normal builds. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Borislav Petkov <borislav.petkov@amd.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Huang Ying <ying.huang@intel.com> Cc: Len Brown <lenb@kernel.org> Cc: Neil Brown <neilb@suse.de>
2009-12-14Merge branch 'for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (34 commits) m68k: rename global variable vmalloc_end to m68k_vmalloc_end percpu: add missing per_cpu_ptr_to_phys() definition for UP percpu: Fix kdump failure if booted with percpu_alloc=page percpu: make misc percpu symbols unique percpu: make percpu symbols in ia64 unique percpu: make percpu symbols in powerpc unique percpu: make percpu symbols in x86 unique percpu: make percpu symbols in xen unique percpu: make percpu symbols in cpufreq unique percpu: make percpu symbols in oprofile unique percpu: make percpu symbols in tracer unique percpu: make percpu symbols under kernel/ and mm/ unique percpu: remove some sparse warnings percpu: make alloc_percpu() handle array types vmalloc: fix use of non-existent percpu variable in put_cpu_var() this_cpu: Use this_cpu_xx in trace_functions_graph.c this_cpu: Use this_cpu_xx for ftrace this_cpu: Use this_cpu_xx in nmi handling this_cpu: Use this_cpu operations in RCU this_cpu: Use this_cpu ops for VM statistics ... Fix up trivial (famous last words) global per-cpu naming conflicts in arch/x86/kvm/svm.c mm/slab.c
2009-10-19crypto: ghash - Add PCLMULQDQ accelerated implementationHuang Ying1-0/+7
PCLMULQDQ is used to accelerate the most time-consuming part of GHASH, carry-less multiplication. More information about PCLMULQDQ can be found at: http://software.intel.com/en-us/articles/carry-less-multiplication-and-its-usage-for-computing-the-gcm-mode/ Because PCLMULQDQ changes XMM state, its usage must be enclosed with kernel_fpu_begin/end, which can be used only in process context, the acceleration is implemented as crypto_ahash. That is, request in soft IRQ context will be defered to the cryptd kernel thread. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-10-03this_cpu: Use this_cpu_ptr in crypto subsystemChristoph Lameter1-1/+1
Just a slight optimization that removes one array lookup. The processor number is needed for other things as well so the get/put_cpu cannot be removed. Acked-by: Tejun Heo <tj@kernel.org> Cc: Huang Ying <ying.huang@intel.com> Signed-off-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2009-08-06crypto: cryptd - Add support to access underlaying shashHuang Ying1-0/+35
cryptd_alloc_ahash() will allocate a cryptd-ed ahash for specified algorithm name. The new allocated one is guaranteed to be cryptd-ed ahash, so the shash underlying can be gotten via cryptd_ahash_child(). Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-22crypto: cryptd - Add finup/export/import for hashHerbert Xu1-0/+40
This patch adds the finup/export/import functions to the cryptd ahash implementation. We simply invoke the underlying shash operations. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-15crypto: cryptd - Fix uninitialized return valueSteffen Klassert1-0/+2
If cryptd_alloc_instance() fails, the return value is uninitialized. This patch fixes this by setting the return value. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-14crypto: cryptd - Switch to new style ahashHerbert Xu1-27/+37
This patch changes cryptd to use the new style ahash type. In particular, the instance is enlarged to encapsulate the new ahash_alg structure. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-14crypto: cryptd - Switch to template create APIHerbert Xu1-24/+29
This patch changes cryptd to use the template->create function instead of alloc in anticipation for the switch to new style ahash algorithms. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-14crypto: cryptd - Use crypto_ahash_set_reqsizeHerbert Xu1-2/+3
This patch makes cryptd use crypto_ahash_set_reqsize to avoid accessing crypto_ahash directly. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-14crypto: cryptd - Use shash algorithmsHerbert Xu1-80/+84
This patch changes cryptd to use shash algorithms instead of the legacy hash interface. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-02crypto: cryptd - Use nivcipher in cryptd_alloc_ablkcipher Huang Ying1-5/+9
Use crypto_alloc_base() instead of crypto_alloc_ablkcipher() to allocate underlying tfm in cryptd_alloc_ablkcipher. Because crypto_alloc_ablkcipher() prefer GENIV encapsulated crypto instead of raw one, while cryptd_alloc_ablkcipher needed the raw one. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-02-19crypto: cryptd - Per-CPU thread implementation based on kcrypto_wqHuang Ying1-117/+103
Original cryptd thread implementation has scalability issue, this patch solve the issue with a per-CPU thread implementation. struct cryptd_queue is defined to be a per-CPU queue, which holds one struct cryptd_cpu_queue for each CPU. In struct cryptd_cpu_queue, a struct crypto_queue holds all requests for the CPU, a struct work_struct is used to run all requests for the CPU. Testing based on dm-crypt on an Intel Core 2 E6400 (two cores) machine shows 19.2% performance gain. The testing script is as follow: -------------------- script begin --------------------------- #!/bin/sh dmc_create() { # Create a crypt device using dmsetup dmsetup create $2 --table "0 `blockdev --getsize $1` crypt cbc(aes-asm)?cryptd?plain:plain babebabebabebabebabebabebabebabe 0 $1 0" } dmsetup remove crypt0 dmsetup remove crypt1 dd if=/dev/zero of=/dev/ram0 bs=1M count=4 >& /dev/null dd if=/dev/zero of=/dev/ram1 bs=1M count=4 >& /dev/null dmc_create /dev/ram0 crypt0 dmc_create /dev/ram1 crypt1 cat >tr.sh <<EOF #!/bin/sh for n in \$(seq 10); do dd if=/dev/dm-0 of=/dev/null >& /dev/null & dd if=/dev/dm-1 of=/dev/null >& /dev/null & done wait EOF for n in $(seq 10); do /usr/bin/time sh tr.sh done rm tr.sh -------------------- script end --------------------------- The separator of dm-crypt parameter is changed from "-" to "?", because "-" is used in some cipher driver name too, and cryptds need to specify cipher driver name instead of cipher name. The test result on an Intel Core2 E6400 (two cores) is as follow: without patch: -----------------wo begin -------------------------- 0.04user 0.38system 0:00.39elapsed 107%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6566minor)pagefaults 0swaps 0.07user 0.35system 0:00.35elapsed 121%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6567minor)pagefaults 0swaps 0.06user 0.34system 0:00.30elapsed 135%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6562minor)pagefaults 0swaps 0.05user 0.37system 0:00.36elapsed 119%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6607minor)pagefaults 0swaps 0.06user 0.36system 0:00.35elapsed 120%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6562minor)pagefaults 0swaps 0.05user 0.37system 0:00.31elapsed 136%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6594minor)pagefaults 0swaps 0.04user 0.34system 0:00.30elapsed 126%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6597minor)pagefaults 0swaps 0.06user 0.32system 0:00.31elapsed 125%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6571minor)pagefaults 0swaps 0.06user 0.34system 0:00.31elapsed 134%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6581minor)pagefaults 0swaps 0.05user 0.38system 0:00.31elapsed 138%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6600minor)pagefaults 0swaps -----------------wo end -------------------------- with patch: ------------------w begin -------------------------- 0.02user 0.31system 0:00.24elapsed 141%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6554minor)pagefaults 0swaps 0.05user 0.34system 0:00.31elapsed 127%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6606minor)pagefaults 0swaps 0.07user 0.33system 0:00.26elapsed 155%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6559minor)pagefaults 0swaps 0.07user 0.32system 0:00.26elapsed 151%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6562minor)pagefaults 0swaps 0.05user 0.34system 0:00.26elapsed 150%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6603minor)pagefaults 0swaps 0.03user 0.36system 0:00.31elapsed 124%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6562minor)pagefaults 0swaps 0.04user 0.35system 0:00.26elapsed 147%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6586minor)pagefaults 0swaps 0.03user 0.37system 0:00.27elapsed 146%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6562minor)pagefaults 0swaps 0.04user 0.36system 0:00.26elapsed 154%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6594minor)pagefaults 0swaps 0.04user 0.35system 0:00.26elapsed 154%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+6557minor)pagefaults 0swaps ------------------w end -------------------------- The middle value of elapsed time is: wo cryptwq: 0.31 w cryptwq: 0.26 The performance gain is about (0.31-0.26)/0.26 = 0.192. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-02-18crypto: cryptd - Add support to access underlying blkcipherHuang Ying1-0/+35
cryptd_alloc_ablkcipher() will allocate a cryptd-ed ablkcipher for specified algorithm name. The new allocated one is guaranteed to be cryptd-ed ablkcipher, so the blkcipher underlying can be gotten via cryptd_ablkcipher_child(). Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10crypto: hash - Move ahash functions into crypto/hash.hHerbert Xu1-0/+1
All new crypto interfaces should go into individual files as much as possible in order to ensure that crypto.h does not collapse under its own weight. This patch moves the ahash code into crypto/hash.h and crypto/internal/hash.h respectively. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10[CRYPTO] cryptd: Add asynchronous hash supportLoc Ho1-0/+243
This patch adds asynchronous hash support to crypto daemon. Signed-off-by: Loc Ho <lho@amcc.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-07-10[CRYPTO] cryptd: Fix EINPROGRESS notification contextHerbert Xu1-5/+4
The EINPROGRESS notifications should be done just like the final call-backs, i.e., with BH off. This patch fixes the call in cryptd since previously it was called with BH on. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-05-01[CRYPTO] cryptd: Correct kzalloc error testJulia Lawall1-1/+3
Normally, kzalloc returns NULL or a valid pointer value, not a value to be tested using IS_ERR. Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-02-07Convert ERR_PTR(PTR_ERR(p)) instances to ERR_CAST(p)David Howells1-2/+2
Convert instances of ERR_PTR(PTR_ERR(p)) to ERR_CAST(p) using: perl -spi -e 's/ERR_PTR[(]PTR_ERR[(](.*)[)][)]/ERR_CAST(\1)/' `grep -rl 'ERR_PTR[(]*PTR_ERR' fs crypto net security` Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-11[CRYPTO] cryptd: Use geniv of the underlying algorithmHerbert Xu1-0/+2
If the underlying algorithm specifies a specific geniv algorithm then we should use it for the cryptd version as well. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-01-11[CRYPTO] ablkcipher: Add distinct ABLKCIPHER typeHerbert Xu1-2/+2
Up until now we have ablkcipher algorithms have been identified as type BLKCIPHER with the ASYNC bit set. This is suboptimal because ablkcipher refers to two things. On the one hand it refers to the top-level ablkcipher interface with requests. On the other hand it refers to and algorithm type underneath. As it is you cannot request a synchronous block cipher algorithm with the ablkcipher interface on top. This is a problem because we want to be able to eventually phase out the blkcipher top-level interface. This patch fixes this by making ABLKCIPHER its own type, just as we have distinct types for HASH and DIGEST. The type it associated with the algorithm implementation only. Which top-level interface is used for synchronous block ciphers is then determined by the mask that's used. If it's a specific mask then the old blkcipher interface is given, otherwise we go with the new ablkcipher interface. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2007-10-10[CRYPTO] ablkcipher: Remove queue pointer from common alg objectHerbert Xu1-4/+3
Since not everyone needs a queue pointer and those who need it can always get it from the context anyway the queue pointer in the common alg object is redundant. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2007-05-31[CRYPTO] cryptd: Fix problem with cryptd and the freezerRafael J. Wysocki1-1/+3
Make sure that cryptd is marked as nonfreezable and does not hold up the freezer. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2007-05-02[CRYPTO] cryptd: Add software async crypto daemonHerbert Xu1-0/+375
This patch adds the cryptd module which is a template that takes a synchronous software crypto algorithm and converts it to an asynchronous one by executing it in a kernel thread. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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