CONFIG_CRYPTO_JITTERENTROPY_OSR: CPU Jitter RNG Oversampling Rate

General informations

The Linux kernel configuration item CONFIG_CRYPTO_JITTERENTROPY_OSR has multiple definitions:

CPU Jitter RNG Oversampling Rate found in crypto/Kconfig

The configuration item CONFIG_CRYPTO_JITTERENTROPY_OSR:

• prompt: CPU Jitter RNG Oversampling Rate
• type: int
• depends on: (none)
• defined in crypto/Kconfig
• found in Linux kernels: 6.7–6.8, 6.9-rc+HEAD

Help text

The Jitter RNG allows the specification of an oversampling rate (OSR). The Jitter RNG operation requires a fixed amount of timing measurements to produce one output block of random numbers. The OSR value is multiplied with the amount of timing measurements to generate one output block. Thus, the timing measurement is oversampled by the OSR factor. The oversampling allows the Jitter RNG to operate on hardware whose timers deliver limited amount of entropy (e.g. the timer is coarse) by setting the OSR to a higher value. The trade-off, however, is that the Jitter RNG now requires more time to generate random numbers.

found in crypto/Kconfig

The configuration item CONFIG_CRYPTO_JITTERENTROPY_OSR:

• prompt:
• type: int
• depends on: (none)
• defined in crypto/Kconfig
• found in Linux kernels: 6.7–6.8, 6.9-rc+HEAD

Help text

(none)

Hardware

LKDDb

Raw data from LKDDb:

• (none)

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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