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The Linux kernel configuration item CONFIG_CRYPTO_AES_ARM has multiple definitions:
arch/arm/crypto/KconfigThe configuration item CONFIG_CRYPTO_AES_ARM:
(none)aes-arm, aes-armBlock ciphers: AES cipher algorithms (FIPS-197)
Architecture: arm
On ARM processors without the Crypto Extensions, this is the fastest AES implementation for single blocks. For multiple blocks, the NEON bit-sliced implementation is usually faster.
This implementation may be vulnerable to cache timing attacks, since it uses lookup tables. However, as countermeasures it disables IRQs and preloads the tables; it is hoped this makes such attacks very difficult.
arch/arm/crypto/KconfigThe configuration item CONFIG_CRYPTO_AES_ARM:
(none)aes-arm, aes-armUse optimized AES assembler routines for ARM platforms.
On ARM processors without the Crypto Extensions, this is the fastest AES implementation for single blocks. For multiple blocks, the NEON bit-sliced implementation is usually faster.
This implementation may be vulnerable to cache timing attacks, since it uses lookup tables. However, as countermeasures it disables IRQs and preloads the tables; it is hoped this makes such attacks very difficult.
arch/arm/crypto/KconfigThe configuration item CONFIG_CRYPTO_AES_ARM:
CONFIG_ARMaes-arm, aes-armUse optimized AES assembler routines for ARM platforms.
AES cipher algorithms (FIPS-197). AES uses the Rijndael algorithm.
Rijndael appears to be consistently a very good performer in both hardware and software across a wide range of computing environments regardless of its use in feedback or non-feedback modes. Its key setup time is excellent, and its key agility is good. Rijndael's very low memory requirements make it very well suited for restricted-space environments, in which it also demonstrates excellent performance. Rijndael's operations are among the easiest to defend against power and timing attacks.
The AES specifies three key sizes: 128, 192 and 256 bits
See http://csrc.nist.gov/encryption/aes/ for more information.
crypto/KconfigThe configuration item CONFIG_CRYPTO_AES_ARM:
CONFIG_ARMaes-arm, aes-armUse optimized AES assembler routines for ARM platforms.
AES cipher algorithms (FIPS-197). AES uses the Rijndael algorithm.
Rijndael appears to be consistently a very good performer in both hardware and software across a wide range of computing environments regardless of its use in feedback or non-feedback modes. Its key setup time is excellent, and its key agility is good. Rijndael's very low memory requirements make it very well suited for restricted-space environments, in which it also demonstrates excellent performance. Rijndael's operations are among the easiest to defend against power and timing attacks.
The AES specifies three key sizes: 128, 192 and 256 bits
See http://csrc.nist.gov/encryption/aes/ for more information.
Raw data from LKDDb:
lkddb module aes-arm CONFIG_CRYPTO_AES_ARM : arch/arm/crypto/Kconfig : "Ciphers: AES" # in 4.1–4.20, 5.0–5.19, 6.0–6.17, 6.18-rc+HEADlkddb module aes-arm CONFIG_CRYPTO_AES_ARM : crypto/Kconfig : "AES cipher algorithms (ARM-asm)" # in 3.7–3.19, 4.0This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).
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Automatically generated (in year 2025). See also LKDDb sources on GitLab