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https://issues.apache.org/jira/browse/MYNEWT-523?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Simon Ratner updated MYNEWT-523:
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Description:
With image signatures enabled, boot loader weighs in at ~27kB, which is too big
for both the nrf51 and nrf52. Even disabling most of mbedtls and only keeping
minimum required features comes to 25kB(EC) / 20kB(RSA).
Without signature support, boot loader is ~12kB.
Maybe consider secp256r1 with tinycrypt as an option for smaller footprint?
was:
With image signatures enabled, boot loader weighs in at ~25kB, which is too big
for both the nrf51 and nrf52. Even disabling most of mbedtls and only keeping
minimum required features still comes to ~20kB.
Without signature support, boot loader is ~12kB.
Maybe consider secp256r1 with tinycrypt as an option for smaller footprint?
> boot - boot loader with BOOTUTIL_SIGN_RSA/EC is too large
> ---------------------------------------------------------
>
> Key: MYNEWT-523
> URL: https://issues.apache.org/jira/browse/MYNEWT-523
> Project: Mynewt
> Issue Type: Bug
> Components: Bootloader
> Affects Versions: v1_0_0_beta1
> Reporter: Simon Ratner
> Assignee: Marko Kiiskila
>
> With image signatures enabled, boot loader weighs in at ~27kB, which is too
> big for both the nrf51 and nrf52. Even disabling most of mbedtls and only
> keeping minimum required features comes to 25kB(EC) / 20kB(RSA).
> Without signature support, boot loader is ~12kB.
> Maybe consider secp256r1 with tinycrypt as an option for smaller footprint?
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