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hmac256 - Online in the Cloud

Run hmac256 in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command hmac256 that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


hmac256 - Compute an HMAC-SHA-256 MAC

SYNOPSIS


hmac256 [--binary] key [FILENAME]

DESCRIPTION


This is a standalone HMAC-SHA-256 implementation used to compute an HMAC-SHA-256 message
authentication code. The tool has originally been developed as a second implementation
for Libgcrypt to allow comparing against the primary implementation and to be used for
internal consistency checks. It should not be used for sensitive data because no
mechanisms to clear the stack etc are used.

The code has been written in a highly portable manner and requires only a few standard
definitions to be provided in a config.h file.

hmac256 is commonly invoked as

hmac256 "This is my key" foo.txt

This compute the MAC on the file ‘foo.txt’ using the key given on the command line.

OPTIONS


hmac256 understands these options:

--binary
Print the MAC as a binary string. The default is to print the MAC encoded has
lower case hex digits.

--version
Print version of the program and exit.

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