The Modified Codes; Public Key(Dfu_Public_Key.c); Disable Hash Value Check Function - Ebyte E104-BT5040U User Manual

Chengdu Ebyte Electronic Technology Co., Ltd.

4.3The Modified Codes

4.3.Public Key(dfu_public_key.c)

#ifdef NRF_DFU_DEBUG_VERSION
/** @brief Public key used to verify DFU images */
__ALIGN(4) const uint8_t pk[64] =
{
0x1b, 0x0c, 0xae, 0x9f, 0x22, 0x80, 0x60, 0xa1, 0x85, 0xa0, 0xba, 0x18, 0xe7, 0xaf, 0xfc, 0x94, 0x63, 0xfb, 0xd2, 0x58, 0xac,
0xde, 0x1c, 0xa0, 0x1d, 0x2a, 0xd2, 0x0d, 0x25, 0x72, 0x9f, 0x37,
0x57, 0x00, 0xc4, 0xf6, 0x0b, 0x92, 0x21, 0x44, 0x85, 0x70, 0x5d, 0xbe, 0x62, 0x0d, 0x9e, 0x09, 0x82, 0x02, 0xf8, 0xec,
0x3b, 0xcd, 0x06, 0xb5, 0xc9, 0x68, 0xc7, 0xff, 0x2e, 0xe7, 0x95, 0x4a
};
#else
/** @brief Public key used to verify DFU images */
__ALIGN(4) const uint8_t pk[64] =
{
0xc2, 0xdf, 0x7a, 0x7f, 0x4a, 0x64, 0xcd, 0x56, 0x63, 0x77, 0x82, 0x94, 0x49, 0x70, 0xe8, 0x1b, 0x8f, 0x69, 0x31, 0xd7, 0xcb,
0x71, 0x0f, 0x2d, 0xcc, 0x03, 0x7d, 0x6f, 0x26, 0x14, 0x1d, 0x32,
0x55, 0xa2, 0x2f, 0xea, 0x7e, 0x1d, 0xca, 0x52, 0xa0, 0x86, 0x9f, 0xee, 0x16, 0x43, 0xc8, 0x8e, 0x3f, 0xbc, 0xcc, 0xa3, 0x2b,
0x36, 0xe1, 0x0e, 0xdb, 0xeb, 0x6f, 0x7b, 0x3c, 0x79, 0x67,
};
#endif

4.3.2 Disable Hash value check function

File Routing："nRF5SDK160098a08e2\components\libraries\bootloader\dfu\nrf_dfu_validation.c". Disable below codes.
err_code = nrf_crypto_ecdsa_verify(&m_verify_context,
// if (err_code != NRF_SUCCESS)
// {
// NRF_LOG_ERROR("Signature failed (err_code: 0x%x)", err_code);
// NRF_LOG_DEBUG("Signature:");
// NRF_LOG_HEXDUMP_DEBUG(m_signature, sizeof(m_signature));
// NRF_LOG_DEBUG("Hash:");
// NRF_LOG_HEXDUMP_DEBUG(m_init_packet_hash, hash_len);
Copyright©2020, Chengdu Ebyte Electronic Technology Co., Ltd.
0x55
&m_public_key,
m_init_packet_hash,
hash_len,
m_signature,
sizeof(m_signature));
E104-BT5040U Datasheet