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Add debugfs ABI documentation for the ECDSA signatures. Signed-off-by: Marek Behún <marek.behun@nic.cz> Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
9 lines
437 B
Text
9 lines
437 B
Text
What: /sys/kernel/debug/turris-mox-rwtm/do_sign
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Date: Jun 2020
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KernelVersion: 5.8
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Contact: Marek Behún <marek.behun@nic.cz>
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Description: (W) Message to sign with the ECDSA private key stored in
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device's OTP. The message must be exactly 64 bytes (since
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this is intended for SHA-512 hashes).
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(R) The resulting signature, 136 bytes. This contains the R and
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S values of the ECDSA signature, both in big-endian format.
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