diff options
| author | Alexandru Gagniuc | 2021-02-19 12:45:13 -0600 |
|---|---|---|
| committer | Tom Rini | 2021-04-14 15:06:08 -0400 |
| commit | 9eef0fe7e5b47b5bc2dde19d67fcde6ee91662c8 (patch) | |
| tree | 535933f1fcc3e7687596c10cb169ba997d8e3b3f | |
| parent | ed6c9e0b6668a05d62f5d1b75aecaf246ba51042 (diff) | |
doc: signature.txt: Document devicetree format for ECDSA keys
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | doc/uImage.FIT/signature.txt | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/doc/uImage.FIT/signature.txt b/doc/uImage.FIT/signature.txt index a3455889ed9..0139295d334 100644 --- a/doc/uImage.FIT/signature.txt +++ b/doc/uImage.FIT/signature.txt @@ -142,7 +142,7 @@ public key in U-Boot's control FDT (using CONFIG_OF_CONTROL). Public keys should be stored as sub-nodes in a /signature node. Required properties are: -- algo: Algorithm name (e.g. "sha1,rsa2048") +- algo: Algorithm name (e.g. "sha1,rsa2048" or "sha256,ecdsa256") Optional properties are: @@ -167,6 +167,11 @@ For RSA the following are mandatory: - rsa,r-squared: (2^num-bits)^2 as a big-endian multi-word integer - rsa,n0-inverse: -1 / modulus[0] mod 2^32 +For ECDSA the following are mandatory: +- ecdsa,curve: Name of ECDSA curve (e.g. "prime256v1") +- ecdsa,x-point: Public key X coordinate as a big-endian multi-word integer +- ecdsa,y-point: Public key Y coordinate as a big-endian multi-word integer + These parameters can be added to a binary device tree using parameter -K of the mkimage command:: |