---
name: "chaosread"
section: "1"
platform: "linux"
package: "chaosread"
version: "1.1-2+b1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/chaosread"
---

# chaosread(1)

read raw noise source from chaoskey

## NAME

chaosread - read raw noise source from chaoskey

## SYNOPSIS

**chaosread**

## DESCRIPTION

*chaosread* reads ADC values from the noise source on the attached ChaosKey device.

## OPTIONS

- \-s serial \| --serial serial

  This selects a ChaosKey by serial number instead of using the first one found.

- \-l length \| --length length

  Set the amount of data to read. Suffixes 'k', 'M' and 'G' are supported. The default is 1k.

- \-i \| --infinite

  Keep reading forever (or until the process is killed).

- \-b \| --bytes

  Read 16-bits little endian values and write out one byte per sample from bits 1-8 of the sample (zero-based, so shift right by one).

- \-b \| --cooked

  Read values from the 'cooked' endpoint, which is the source used by the kernel driver that contains trimmed and whitened data which has 8 bits of entropy per byte.

- \-b \| --raw

  Read from the raw RNG source endpoint, which is best for testing the hardware on the device. This is the default

- \-b \| --firmware

  Read from the device firmware. This can be used to verify that the firmware in the device has the expected contents.

## USAGE

*chaosread* reads noise data.

## AUTHOR

Keith Packard