Verifying Firmware Authenticity at Boot With SHA-256 Signatures on SAMD Microcontrollers
The bootloader checks a cryptic 64-byte signature in under 5ms—discover how SHA-256 and ECDSA-P256 team up to lock out evil maid attacks.
The bootloader checks a cryptic 64-byte signature in under 5ms—discover how SHA-256 and ECDSA-P256 team up to lock out evil maid attacks.