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mcuboot
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imgtool: Discard public RSA if set for signing 

If imgtool is used for signing with encryption
it will disallow using public RSA key for
signing.

Signed-off-by: Chris Bittner <chris.bittner@nordicsemi.no>
This commit is contained in:
Chris Bittner 2019-03-29 10:11:31 +01:00 committed by Fabio Utzig
parent ebd0503348
commit fda937ab02
1 changed files with 3 additions and 3 deletions
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6
scripts/imgtool/main.py
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@ -156,9 +156,9 @@ def sign(key, align, version, header_size, pad_header, slot_size, pad,
enckey = load_key(encrypt) if encrypt else None enckey = load_key(encrypt) if encrypt else None
if enckey: if enckey:
if not isinstance(enckey, (keys.RSA2048, keys.RSA2048Public)): if not isinstance(enckey, (keys.RSA2048, keys.RSA2048Public)):
raise Exception("Encryption only available with RSA") raise Exception("Encryption only available with RSA key")
if key and not isinstance(key, (keys.RSA2048, keys.RSA2048Public)): if key and not isinstance(key, keys.RSA2048):
raise Exception("Encryption with sign only available with RSA") raise Exception("Signing only available with private RSA key")
img.create(key, enckey) img.create(key, enckey)
img.save(outfile) img.save(outfile)