kernel/linux.git/crypto/842.c, branch v6.19.11

crypto: comp - Use same definition of context alloc and free ops

2025-09-20T12:21:03+00:00

In commit 42d9f6c77479 ("crypto: acomp - Move scomp stream allocation code into acomp"), the crypto_acomp_streams struct was made to rely on having the alloc_ctx and free_ctx operations defined in the same order as the scomp_alg struct. But in that same commit, the alloc_ctx and free_ctx members of scomp_alg may be randomized by structure layout randomization, since they are contained in a pure ops structure (containing only function pointers). If the pointers within scomp_alg are randomized, but those in crypto_acomp_streams are not, then the order may no longer match. This fixes the problem by removing the union from scomp_alg so that both crypto_acomp_streams and scomp_alg will share the same definition of alloc_ctx and free_ctx, ensuring they will always have the same layout. Signed-off-by: Dan Moulding Suggested-by: Herbert Xu Fixes: 42d9f6c77479 ("crypto: acomp - Move scomp stream allocation code into acomp") Signed-off-by: Herbert Xu

Revert "crypto: run initcalls for generic implementations earlier"

2025-05-05T10:20:44+00:00

This reverts commit c4741b23059794bd99beef0f700103b0d983b3fd. Crypto API self-tests no longer run at registration time and now occur either at late_initcall or upon the first use. Therefore the premise of the above commit no longer exists. Revert it and subsequent additions of subsys_initcall and arch_initcall. Note that lib/crypto calls will stay at subsys_initcall (or rather downgraded from arch_initcall) because they may need to occur before Crypto API registration. Signed-off-by: Herbert Xu

crypto: deadcode structs from 'comp' removal

2025-04-16T07:36:24+00:00

Ard's recent series of patches removing 'comp' implementations left behind a bunch of trivial structs, remove them. These are: crypto842_ctx - commit 2d985ff0072f ("crypto: 842 - drop obsolete 'comp' implementation") lz4_ctx - commit 33335afe33c9 ("crypto: lz4 - drop obsolete 'comp' implementation") lz4hc_ctx - commit dbae96559eef ("crypto: lz4hc - drop obsolete 'comp' implementation") lzo_ctx - commit a3e43a25bad0 ("crypto: lzo - drop obsolete 'comp' implementation") lzorle_ctx - commit d32da55c5b0c ("crypto: lzo-rle - drop obsolete 'comp' implementation") Signed-off-by: Dr. David Alan Gilbert Signed-off-by: Herbert Xu

crypto: 842 - drop obsolete 'comp' implementation

2025-03-21T09:39:06+00:00

The 'comp' API is obsolete and will be removed, so remove this comp implementation. Signed-off-by: Ard Biesheuvel Signed-off-by: Herbert Xu

crypto: scomp - Remove tfm argument from alloc/free_ctx

2025-03-15T08:21:22+00:00

The tfm argument is completely unused and meaningless as the same stream object is identical over all transforms of a given algorithm. Remove it. Signed-off-by: Herbert Xu

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157

2019-05-30T18:26:37+00:00

Based on 3 normalized pattern(s): 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 this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details 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 [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details 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 [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Richard Fontana Reviewed-by: Kate Stewart Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman

crypto: run initcalls for generic implementations earlier

2019-04-18T14:15:03+00:00

Use subsys_initcall for registration of all templates and generic algorithm implementations, rather than module_init. Then change cryptomgr to use arch_initcall, to place it before the subsys_initcalls. This is needed so that when both a generic and optimized implementation of an algorithm are built into the kernel (not loadable modules), the generic implementation is registered before the optimized one. Otherwise, the self-tests for the optimized implementation are unable to allocate the generic implementation for the new comparison fuzz tests. Note that on arm, a side effect of this change is that self-tests for generic implementations may run before the unaligned access handler has been installed. So, unaligned accesses will crash the kernel. This is arguably a good thing as it makes it easier to detect that type of bug. Signed-off-by: Eric Biggers Signed-off-by: Herbert Xu

crypto: acomp - add support for 842 via scomp

2016-10-25T03:08:33+00:00

Add scomp backend for 842 compression algorithm. Signed-off-by: Giovanni Cabiddu Signed-off-by: Herbert Xu

crypto: 842 - change 842 alg to use software

2015-05-11T07:06:43+00:00

Change the crypto 842 compression alg to use the software 842 compression and decompression library. Add the crypto driver_name as "842-generic". Remove the fallback to LZO compression. Previously, this crypto compression alg attemped 842 compression using PowerPC hardware, and fell back to LZO compression and decompression if the 842 PowerPC hardware was unavailable or failed. This should not fall back to any other compression method, however; users of this crypto compression alg can fallback if desired, and transparent fallback tricks callers into thinking they are getting 842 compression when they actually get LZO compression - the failure of the 842 hardware should not be transparent to the caller. The crypto compression alg for a hardware device also should not be located in crypto/ so this is now a software-only implementation that uses the 842 software compression/decompression library. Signed-off-by: Dan Streetman Signed-off-by: Herbert Xu

crypto: prefix module autoloading with "crypto-"

2014-11-24T14:43:57+00:00

This prefixes all crypto module loading with "crypto-" so we never run the risk of exposing module auto-loading to userspace via a crypto API, as demonstrated by Mathias Krause: https://lkml.org/lkml/2013/3/4/70 Signed-off-by: Kees Cook Signed-off-by: Herbert Xu