CONFIG_CRYPTO_AES_ARM_BS: Bit sliced AES using NEON instructions

General informations

The Linux kernel configuration item CONFIG_CRYPTO_AES_ARM_BS has multiple definitions:

Bit sliced AES using NEON instructions found in arch/arm/crypto/Kconfig

The configuration item CONFIG_CRYPTO_AES_ARM_BS:

• prompt: Bit sliced AES using NEON instructions
• type: tristate
• depends on: CONFIG_KERNEL_MODE_NEON
• defined in arch/arm/crypto/Kconfig
• found in Linux kernels: 4.1–4.20, 5.0–5.6, 5.6+HEAD
• modules built: aes-arm-bs, aes-arm-bs

Help text

Use a faster and more secure NEON based implementation of AES in CBC, CTR and XTS modes

Bit sliced AES gives around 45% speedup on Cortex-A15 for CTR mode and for XTS mode encryption, CBC and XTS mode decryption speedup is around 25%. (CBC encryption speed is not affected by this driver.) This implementation does not rely on any lookup tables so it is believed to be invulnerable to cache timing attacks.

Bit sliced AES using NEON instructions found in crypto/Kconfig

The configuration item CONFIG_CRYPTO_AES_ARM_BS:

• prompt: Bit sliced AES using NEON instructions
• type: tristate
• depends on: CONFIG_ARM && CONFIG_KERNEL_MODE_NEON
• defined in crypto/Kconfig
• found in Linux kernels: 3.13–3.19, 4.0
• modules built: aes-arm-bs, aes-arm-bs

Help text

Use a faster and more secure NEON based implementation of AES in CBC, CTR and XTS modes

Bit sliced AES gives around 45% speedup on Cortex-A15 for CTR mode and for XTS mode encryption, CBC and XTS mode decryption speedup is around 25%. (CBC encryption speed is not affected by this driver.) This implementation does not rely on any lookup tables so it is believed to be invulnerable to cache timing attacks.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb module aes-arm-bs CONFIG_CRYPTO_AES_ARM_BS : arch/arm/crypto/Kconfig : "Bit sliced AES using NEON instructions" # in 4.1–4.20, 5.0–5.6, 5.6+HEAD
• lkddb module aes-arm-bs CONFIG_CRYPTO_AES_ARM_BS : crypto/Kconfig : "Bit sliced AES using NEON instructions" # in 3.13–3.19, 4.0

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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