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Security personalizer rewritten (#794)

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* Removed ability to lock data section
* Introduced "guided mode" to simplify process
* Refactored the sketch to be less monolithic
* Print details and instructions in tables
* Use device unique ID as serial when
* Calculate and store personalization checksum
* Print serial in a copy+paste friendly manner (fixes #804)
* Clarify meaning of UART confirmation (fixes #805)
This commit is contained in:
Patrick Fallberg
2017-04-02 15:37:21 +02:00
committed by GitHub
parent 3350d79fe6
commit 7e6db413c7
14 changed files with 1794 additions and 954 deletions
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drivers/ATSHA204/ATSHA204.cpp
+21 -25
View File
@@ -14,7 +14,6 @@ static uint8_t swi_receive_bytes(uint8_t count, uint8_t *buffer);
static uint8_t swi_send_bytes(uint8_t count, uint8_t *buffer);
static uint8_t swi_send_byte(uint8_t value);
static uint8_t sha204p_receive_response(uint8_t size, uint8_t *response);
static uint8_t sha204m_read(uint8_t *tx_buffer, uint8_t *rx_buffer, uint8_t zone, uint16_t address);
static uint8_t sha204c_resync(uint8_t size, uint8_t *response);
static uint8_t sha204c_send_and_receive(uint8_t *tx_buffer, uint8_t rx_size, uint8_t *rx_buffer,
uint8_t execution_delay, uint8_t execution_timeout);
@@ -373,27 +372,6 @@ static uint8_t sha204c_send_and_receive(uint8_t *tx_buffer, uint8_t rx_size, uin
return ret_code;
}
/* Marshaling functions */
static uint8_t sha204m_read(uint8_t *tx_buffer, uint8_t *rx_buffer, uint8_t zone, uint16_t address)
{
uint8_t rx_size;
address >>= 2;
tx_buffer[SHA204_COUNT_IDX] = READ_COUNT;
tx_buffer[SHA204_OPCODE_IDX] = SHA204_READ;
tx_buffer[READ_ZONE_IDX] = zone;
tx_buffer[READ_ADDR_IDX] = (uint8_t) (address & SHA204_ADDRESS_MASK);
tx_buffer[READ_ADDR_IDX + 1] = 0;
rx_size = (zone & SHA204_ZONE_COUNT_FLAG) ? READ_32_RSP_SIZE : READ_4_RSP_SIZE;
return sha204c_send_and_receive(&tx_buffer[0], rx_size, &rx_buffer[0], READ_DELAY,
READ_EXEC_MAX - READ_DELAY);
}
/* CRC Calculator and Checker */
static void sha204c_calculate_crc(uint8_t length, uint8_t *data, uint8_t *crc)
@@ -574,14 +552,14 @@ uint8_t atsha204_getSerialNumber(uint8_t * response)
uint8_t readResponse[READ_4_RSP_SIZE];
/* read from bytes 0->3 of config zone */
uint8_t returnCode = sha204m_read(readCommand, readResponse, SHA204_ZONE_CONFIG, ADDRESS_SN03);
uint8_t returnCode = atsha204_read(readCommand, readResponse, SHA204_ZONE_CONFIG, ADDRESS_SN03);
if (!returnCode) {
for (int i=0; i<4; i++) {// store bytes 0-3 into respones array
response[i] = readResponse[SHA204_BUFFER_POS_DATA+i];
}
/* read from bytes 8->11 of config zone */
returnCode = sha204m_read(readCommand, readResponse, SHA204_ZONE_CONFIG, ADDRESS_SN47);
returnCode = atsha204_read(readCommand, readResponse, SHA204_ZONE_CONFIG, ADDRESS_SN47);
for (int i=4; i<8; i++) {// store bytes 4-7 of SN into response array
response[i] = readResponse[SHA204_BUFFER_POS_DATA+(i-4)];
@@ -589,10 +567,28 @@ uint8_t atsha204_getSerialNumber(uint8_t * response)
if (!returnCode) {
/* Finally if last two reads were successful, read byte 8 of the SN */
returnCode = sha204m_read(readCommand, readResponse, SHA204_ZONE_CONFIG, ADDRESS_SN8);
returnCode = atsha204_read(readCommand, readResponse, SHA204_ZONE_CONFIG, ADDRESS_SN8);
response[8] = readResponse[SHA204_BUFFER_POS_DATA]; // Byte 8 of SN should always be 0xEE
}
}
return returnCode;
}
uint8_t atsha204_read(uint8_t *tx_buffer, uint8_t *rx_buffer, uint8_t zone, uint16_t address)
{
uint8_t rx_size;
address >>= 2;
tx_buffer[SHA204_COUNT_IDX] = READ_COUNT;
tx_buffer[SHA204_OPCODE_IDX] = SHA204_READ;
tx_buffer[READ_ZONE_IDX] = zone;
tx_buffer[READ_ADDR_IDX] = (uint8_t) (address & SHA204_ADDRESS_MASK);
tx_buffer[READ_ADDR_IDX + 1] = 0;
rx_size = (zone & SHA204_ZONE_COUNT_FLAG) ? READ_32_RSP_SIZE : READ_4_RSP_SIZE;
return sha204c_send_and_receive(&tx_buffer[0], rx_size, &rx_buffer[0], READ_DELAY,
READ_EXEC_MAX - READ_DELAY);
}