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oathtool — OATH one-time password tool. More information: <https://www.nongnu.org/oath-toolkit/oathtool.1.html>

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Problem

How to use the oathtool command: OATH one-time password tool. More information: <https://www.nongnu.org/oath-toolkit/oathtool.1.html>.

Solution

oathtool — OATH one-time password tool. More information: <https://www.nongnu.org/oath-toolkit/oathtool.1.html>.

Generate TOTP token (behaves like Google Authenticator):
oathtool --totp {{[-b|--base32]}} "{{secret}}"


Generate a TOTP token for a specific time:
oathtool --totp {{[-N|--now]}} "{{2004-02-29 16:21:42}}" {{[-b|--base32]}} "{{secret}}"


Validate a TOTP token:
oathtool --totp {{[-b|--base32]}} "{{secret}}" "{{token}}"

Code Snippets

Generate TOTP token (behaves like Google Authenticator)

oathtool --totp {{[-b|--base32]}} "{{secret}}"

Generate a TOTP token for a specific time

oathtool --totp {{[-N|--now]}} "{{2004-02-29 16:21:42}}" {{[-b|--base32]}} "{{secret}}"

Validate a TOTP token

oathtool --totp {{[-b|--base32]}} "{{secret}}" "{{token}}"

Context

tldr-pages: common/oathtool

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