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Pass a Signing() object 'signer' to Package() and Package.sign_firmware(),
instead of a 'key_file' string (path).

Access the private key only once, when generating 'signer', which:

1. Fixes a security issue where caller must write private key to disk
instead of passing it purely in memory eg:

    nrfutil --key-file $(secure-key-retrieval)

2. Gives a small speed improvement.

Fixes #327

Signed-off-by: Sirio Balmelli <sirio@b-ad.ch>
a540fe4

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README.md

nRF Util

Latest version License Build Status

nRF Util is a Python package and command-line utility that supports Device Firmware Updates (DFU) and cryptographic functionality.

screenshot

Documentation

See the InfoCenter pages for information on how to install and use nRF Util.

Feedback

Please report issues on the DevZone portal.

Contributing

Feel free to propose changes by creating a pull request.

If you plan to make any non-trivial changes, please start out small and ask seek an agreement before putting too much work in it. A pull request can be declined if it does not fit well within the current product roadmap.

In order to accept your pull request, we need you to sign our Contributor License Agreement (CLA). You will see instructions for doing this after having submitted your first pull request.

License

See the LICENSE file for details.

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