KeyTool improvements to allow ASN.1/DER private keys with ECC

wolfSSL / wolfBoot

wolfBoot is a portable, OS-agnostic, secure bootloader for microcontrollers, supporting firmware authentication and firmware update mechanisms.

https://www.wolfssl.com

GNU General Public License v3.0

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Closed dgarske closed 1 week ago

dgarske commented 1 week ago

Added keygen --der option to allow ECC private key as ASN.1/DER.
Added sign tool ECC key load support for ASN.1/DER private key (default is raw pub x/y, priv d).
Refactored sign tool RSA/ECC logic to consolidate code and allow proper "auto" detection for different RSA key sizes.
Fix for building key tools with debug and missing XSNPRINTF.