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path: root/drivers/crypto/ccp/ccp-crypto-aes-xts.c
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2022-12-09crypto: ccp - Set DMA alignment explicitlyHerbert Xu1-9/+11
This driver has been implicitly relying on kmalloc alignment to be sufficient for DMA. This may no longer be the case with upcoming arm64 changes. This patch changes it to explicitly request DMA alignment from the Crypto API. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-07-16crypto: drivers - set the flag CRYPTO_ALG_ALLOCATES_MEMORYMikulas Patocka1-0/+1
Set the flag CRYPTO_ALG_ALLOCATES_MEMORY in the crypto drivers that allocate memory. drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c: sun8i_ce_cipher drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c: sun8i_ss_cipher drivers/crypto/amlogic/amlogic-gxl-core.c: meson_cipher drivers/crypto/axis/artpec6_crypto.c: artpec6_crypto_common_init drivers/crypto/bcm/cipher.c: spu_skcipher_rx_sg_create drivers/crypto/caam/caamalg.c: aead_edesc_alloc drivers/crypto/caam/caamalg_qi.c: aead_edesc_alloc drivers/crypto/caam/caamalg_qi2.c: aead_edesc_alloc drivers/crypto/caam/caamhash.c: hash_digest_key drivers/crypto/cavium/cpt/cptvf_algs.c: process_request drivers/crypto/cavium/nitrox/nitrox_aead.c: nitrox_process_se_request drivers/crypto/cavium/nitrox/nitrox_skcipher.c: nitrox_process_se_request drivers/crypto/ccp/ccp-crypto-aes-cmac.c: ccp_do_cmac_update drivers/crypto/ccp/ccp-crypto-aes-galois.c: ccp_crypto_enqueue_request drivers/crypto/ccp/ccp-crypto-aes-xts.c: ccp_crypto_enqueue_request drivers/crypto/ccp/ccp-crypto-aes.c: ccp_crypto_enqueue_request drivers/crypto/ccp/ccp-crypto-des3.c: ccp_crypto_enqueue_request drivers/crypto/ccp/ccp-crypto-sha.c: ccp_crypto_enqueue_request drivers/crypto/chelsio/chcr_algo.c: create_cipher_wr drivers/crypto/hisilicon/sec/sec_algs.c: sec_alloc_and_fill_hw_sgl drivers/crypto/hisilicon/sec2/sec_crypto.c: sec_alloc_req_id drivers/crypto/inside-secure/safexcel_cipher.c: safexcel_queue_req drivers/crypto/inside-secure/safexcel_hash.c: safexcel_ahash_enqueue drivers/crypto/ixp4xx_crypto.c: ablk_perform drivers/crypto/marvell/cesa/cipher.c: mv_cesa_skcipher_dma_req_init drivers/crypto/marvell/cesa/hash.c: mv_cesa_ahash_dma_req_init drivers/crypto/marvell/octeontx/otx_cptvf_algs.c: create_ctx_hdr drivers/crypto/n2_core.c: n2_compute_chunks drivers/crypto/picoxcell_crypto.c: spacc_sg_to_ddt drivers/crypto/qat/qat_common/qat_algs.c: qat_alg_skcipher_encrypt drivers/crypto/qce/skcipher.c: qce_skcipher_async_req_handle drivers/crypto/talitos.c : talitos_edesc_alloc drivers/crypto/virtio/virtio_crypto_algs.c: __virtio_crypto_skcipher_do_req drivers/crypto/xilinx/zynqmp-aes-gcm.c: zynqmp_aes_aead_cipher Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> [EB: avoid overly-long lines] Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-07-16crypto: ccp - permit asynchronous skcipher as fallbackArd Biesheuvel1-17/+16
Even though the ccp driver implements an asynchronous version of xts(aes), the fallback it allocates is required to be synchronous. Given that SIMD based software implementations are usually asynchronous as well, even though they rarely complete asynchronously (this typically only happens in cases where the request was made from softirq context, while SIMD was already in use in the task context that it interrupted), these implementations are disregarded, and either the generic C version or another table based version implemented in assembler is selected instead. Since falling back to synchronous AES is not only a performance issue, but potentially a security issue as well (due to the fact that table based AES is not time invariant), let's fix this, by allocating an ordinary skcipher as the fallback, and invoke it with the completion routine that was given to the outer request. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Acked-by: John Allen <john.allen@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-11-17crypto: ccp - switch from ablkcipher to skcipherArd Biesheuvel1-47/+47
Commit 7a7ffe65c8c5 ("crypto: skcipher - Add top-level skcipher interface") dated 20 august 2015 introduced the new skcipher API which is supposed to replace both blkcipher and ablkcipher. While all consumers of the API have been converted long ago, some producers of the ablkcipher remain, forcing us to keep the ablkcipher support routines alive, along with the matching code to expose [a]blkciphers via the skcipher API. So switch this driver to the skcipher API, allowing us to finally drop the ablkcipher code in the near future. Reviewed-by: Gary R Hook <gary.hook@amd.com> Tested-by: Gary R Hook <gary.hook@amd.com> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-08-30crypto: ccp - invoke fallback for XTS ciphertext stealingArd Biesheuvel1-3/+0
For correctness and compliance with the XTS-AES specification, we are adding support for ciphertext stealing to XTS implementations, even though no use cases are known that will be enabled by this. Since the ccp driver already has a fallback skcipher standby for dealing with input sizes other than [16, 512, 1024, 2048, 4096], just drop the check against the block size. Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: Gary Hook <gary.hook@amd.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner1-4/+1
Based on 2 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 version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-28crypto: ccp - Remove VLA usage of skcipherKees Cook1-6/+7
In the quest to remove all stack VLA usage from the kernel[1], this replaces struct crypto_skcipher and SKCIPHER_REQUEST_ON_STACK() usage with struct crypto_sync_skcipher and SYNC_SKCIPHER_REQUEST_ON_STACK(), which uses a fixed stack size. [1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: Gary Hook <gary.hook@amd.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-08-04crypto: ccp - Add XTS-AES-256 support for CCP version 5Gary R Hook1-4/+22
Signed-off-by: Gary R Hook <gary.hook@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-08-04crypto: ccp - Rework the unit-size check for XTS-AESGary R Hook1-37/+20
The CCP supports a limited set of unit-size values. Change the check for this parameter such that acceptable values match the enumeration. Then clarify the conditions under which we must use the fallback implementation. Signed-off-by: Gary R Hook <gary.hook@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-08-04crypto: ccp - Add a call to xts_check_key()Gary R Hook1-1/+8
Vet the key using the available standard function Signed-off-by: Gary R Hook <gary.hook@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-08-04crypto: ccp - Fix XTS-AES-128 support on v5 CCPsGary R Hook1-1/+3
Version 5 CCPs have some new requirements for XTS-AES: the type field must be specified, and the key requires 512 bits, with each part occupying 256 bits and padded with zeroes. cc: <stable@vger.kernel.org> # 4.9.x+ Signed-off-by: Gary R Hook <ghook@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-07-01crypto: ccp - Use skcipher for fallbackHerbert Xu1-23/+20
This patch replaces use of the obsolete ablkcipher with skcipher. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-05-25crypto: ccp - Fix AES XTS error for request sizes above 4096Tom Lendacky1-5/+12
The ccp-crypto module for AES XTS support has a bug that can allow requests greater than 4096 bytes in size to be passed to the CCP hardware. The CCP hardware does not support request sizes larger than 4096, resulting in incorrect output. The request should actually be handled by the fallback mechanism instantiated by the ccp-crypto module. Add a check to insure the request size is less than or equal to the maximum supported size and use the fallback mechanism if it is not. Cc: <stable@vger.kernel.org> # 3.14.x- Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-02-27crypto: ccp - Updates for checkpatch warnings/errorsTom Lendacky1-3/+1
Changes to address warnings and errors reported by the checkpatch script. Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-05-22crypto: ccp - tfm->__crt_alg->cra_name directlyMarek Vasut1-2/+2
Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-12-20crypto: ccp - Remove user triggerable pr_err callsTom Lendacky1-9/+3
Remove the pr_err calls that are issued during parameter checking in some AES operations. This will eliminate the possibility of filling up syslog through these paths. Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-12-05crypto: ccp - CCP XTS-AES crypto API supportTom Lendacky1-0/+285
These routines provide crypto API support for the XTS-AES mode of AES on the AMD CCP. Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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