mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-22 06:18:07 +00:00
refactor(core): optiga_execute_command()
- Remove presentation layer parameter. - Use error-flushing command codes.
This commit is contained in:
Andrew Kozlik
matejcik
parent
b8adcf35fe
commit
11e1795a89
@ -86,6 +86,22 @@ static optiga_result process_output_varlen(uint8_t *data, size_t max_data_size,
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return OPTIGA_SUCCESS;
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}
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static void write_uint16(uint8_t **ptr, uint16_t i) {
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**ptr = i >> 8;
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*ptr += 1;
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**ptr = i & 0xff;
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*ptr += 1;
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}
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static void write_prefixed_data(uint8_t **ptr, const uint8_t *data,
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size_t data_size) {
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write_uint16(ptr, data_size);
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if (data_size > 0) {
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memcpy(*ptr, data, data_size);
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*ptr += data_size;
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}
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}
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/*
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* For metadata description see:
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* https://github.com/Infineon/optiga-trust-m/blob/develop/documents/OPTIGA%E2%84%A2%20Trust%20M%20Solution%20Reference%20Manual.md#metadata-expression
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@ -229,13 +245,12 @@ bool optiga_compare_metadata(const optiga_metadata *expected,
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*/
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optiga_result optiga_open_application(void) {
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static const uint8_t OPEN_APP[] = {
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0x70, 0x00, 0x00, 0x10, 0xD2, 0x76, 0x00, 0x00, 0x04, 0x47,
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0xF0, 0x00, 0x00, 0x10, 0xD2, 0x76, 0x00, 0x00, 0x04, 0x47,
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0x65, 0x6E, 0x41, 0x75, 0x74, 0x68, 0x41, 0x70, 0x70, 0x6C,
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};
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optiga_result ret =
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optiga_execute_command(false, OPEN_APP, sizeof(OPEN_APP), tx_buffer,
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sizeof(tx_buffer), &tx_size);
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optiga_result ret = optiga_execute_command(
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OPEN_APP, sizeof(OPEN_APP), tx_buffer, sizeof(tx_buffer), &tx_size);
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if (ret != OPTIGA_SUCCESS) {
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return ret;
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}
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@ -244,18 +259,21 @@ optiga_result optiga_open_application(void) {
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}
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optiga_result optiga_get_error_code(uint8_t *error_code) {
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size_t data_size = 0;
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optiga_result ret =
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optiga_get_data_object(0xf1c2, false, error_code, 1, &data_size);
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tx_size = 6;
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uint8_t *ptr = tx_buffer;
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*(ptr++) = 0x01; // command code
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*(ptr++) = 0x00; // get data
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write_uint16(&ptr, tx_size - 4);
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write_uint16(&ptr, 0xf1c2); // error code data object OID
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optiga_result ret = optiga_execute_command(tx_buffer, tx_size, tx_buffer,
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sizeof(tx_buffer), &tx_size);
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if (ret != OPTIGA_SUCCESS) {
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return ret;
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}
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if (data_size != 1) {
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return OPTIGA_ERR_SIZE;
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}
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return OPTIGA_SUCCESS;
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return process_output_fixedlen(error_code, 1);
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}
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/*
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@ -264,16 +282,16 @@ optiga_result optiga_get_error_code(uint8_t *error_code) {
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optiga_result optiga_get_data_object(uint16_t oid, bool get_metadata,
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uint8_t *data, size_t max_data_size,
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size_t *data_size) {
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uint8_t get_data[6] = {0x01, 0x00, 0x00, 0x02};
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if (get_metadata) {
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get_data[1] = 0x01;
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}
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get_data[4] = oid >> 8;
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get_data[5] = oid & 0xff;
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tx_size = 6;
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uint8_t *ptr = tx_buffer;
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*(ptr++) = 0x81; // command code
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*(ptr++) = get_metadata ? 0x01 : 0x00;
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write_uint16(&ptr, tx_size - 4);
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optiga_result ret =
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optiga_execute_command(false, get_data, sizeof(get_data), tx_buffer,
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sizeof(tx_buffer), &tx_size);
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write_uint16(&ptr, oid);
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optiga_result ret = optiga_execute_command(tx_buffer, tx_size, tx_buffer,
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sizeof(tx_buffer), &tx_size);
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if (ret != OPTIGA_SUCCESS) {
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return ret;
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}
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@ -286,26 +304,25 @@ optiga_result optiga_get_data_object(uint16_t oid, bool get_metadata,
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*/
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optiga_result optiga_set_data_object(uint16_t oid, bool set_metadata,
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const uint8_t *data, size_t data_size) {
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if (data_size + 8 > sizeof(tx_buffer)) {
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tx_size = data_size + 8;
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if (tx_size > sizeof(tx_buffer)) {
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return OPTIGA_ERR_PARAM;
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}
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tx_size = data_size + 8;
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tx_buffer[0] = 0x02;
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tx_buffer[1] = set_metadata ? 0x01 : 0x40;
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tx_buffer[2] = (tx_size - 4) >> 8;
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tx_buffer[3] = (tx_size - 4) & 0xff;
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tx_buffer[4] = oid >> 8;
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tx_buffer[5] = oid & 0xff;
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tx_buffer[6] = 0;
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tx_buffer[7] = 0;
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uint8_t *ptr = tx_buffer;
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*(ptr++) = 0x82; // command code
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*(ptr++) = set_metadata ? 0x01 : 0x40;
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write_uint16(&ptr, tx_size - 4);
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write_uint16(&ptr, oid);
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write_uint16(&ptr, 0); // offset
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if (data_size != 0) {
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memcpy(tx_buffer + 8, data, data_size);
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memcpy(ptr, data, data_size);
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}
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optiga_result ret = optiga_execute_command(
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false, tx_buffer, data_size + 8, tx_buffer, sizeof(tx_buffer), &tx_size);
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optiga_result ret = optiga_execute_command(tx_buffer, tx_size, tx_buffer,
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sizeof(tx_buffer), &tx_size);
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if (ret != OPTIGA_SUCCESS) {
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memzero(tx_buffer + 8, data_size);
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return ret;
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@ -324,13 +341,16 @@ optiga_result optiga_get_random(uint8_t *random, size_t random_size) {
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return OPTIGA_ERR_SIZE;
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}
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uint8_t get_random[6] = {0x0C, 0x00, 0x00, 0x02};
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get_random[4] = random_size >> 8;
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get_random[5] = random_size & 0xff;
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tx_size = 6;
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uint8_t *ptr = tx_buffer;
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*(ptr++) = 0x8C; // command code
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*(ptr++) = 0x00; // random number from TRNG
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write_uint16(&ptr, tx_size - 4);
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optiga_result ret =
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optiga_execute_command(false, get_random, sizeof(get_random), tx_buffer,
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sizeof(tx_buffer), &tx_size);
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write_uint16(&ptr, random_size);
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optiga_result ret = optiga_execute_command(tx_buffer, tx_size, tx_buffer,
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sizeof(tx_buffer), &tx_size);
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if (ret != OPTIGA_SUCCESS) {
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return ret;
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}
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@ -340,6 +360,7 @@ optiga_result optiga_get_random(uint8_t *random, size_t random_size) {
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/*
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* https://github.com/Infineon/optiga-trust-m/blob/develop/documents/OPTIGA%E2%84%A2%20Trust%20M%20Solution%20Reference%20Manual.md#encryptsym
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* Returns 0x61, mac_size (2 bytes), mac.
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*/
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optiga_result optiga_encrypt_sym(optiga_sym_mode mode, uint16_t oid,
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const uint8_t *input, size_t input_size,
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@ -350,19 +371,18 @@ optiga_result optiga_encrypt_sym(optiga_sym_mode mode, uint16_t oid,
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}
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tx_size = 9 + input_size;
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tx_buffer[0] = 0x14;
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tx_buffer[1] = mode;
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tx_buffer[2] = (tx_size - 4) >> 8;
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tx_buffer[3] = (tx_size - 4) & 0xff;
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tx_buffer[4] = oid >> 8;
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tx_buffer[5] = oid & 0xff;
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tx_buffer[6] = 0x01;
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tx_buffer[7] = input_size >> 8;
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tx_buffer[8] = input_size & 0xff;
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memcpy(tx_buffer + 9, input, input_size);
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uint8_t *ptr = tx_buffer;
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*(ptr++) = 0x94; // command code
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*(ptr++) = mode;
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write_uint16(&ptr, tx_size - 4);
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optiga_result ret = optiga_execute_command(
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false, tx_buffer, tx_size, tx_buffer, sizeof(tx_buffer), &tx_size);
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write_uint16(&ptr, oid);
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*(ptr++) = 0x01; // start and final data block
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write_prefixed_data(&ptr, input, input_size);
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optiga_result ret = optiga_execute_command(tx_buffer, tx_size, tx_buffer,
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sizeof(tx_buffer), &tx_size);
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if (ret == OPTIGA_SUCCESS) {
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ret = process_output_varlen(output, max_output_size, output_size);
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}
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@ -375,43 +395,49 @@ optiga_result optiga_encrypt_sym(optiga_sym_mode mode, uint16_t oid,
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* https://github.com/Infineon/optiga-trust-m/blob/develop/documents/OPTIGA%E2%84%A2%20Trust%20M%20Solution%20Reference%20Manual.md#decryptsym
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*/
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optiga_result optiga_set_auto_state(uint16_t nonce_oid, uint16_t key_oid,
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const uint8_t key[32]) {
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const uint8_t *key, size_t key_size) {
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uint8_t nonce[16] = {0};
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uint8_t get_random[] = {
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0x0C, 0x00, 0x00, 0x07, 0x00, sizeof(nonce), 0x00, 0x00, 0x41, 0x00, 0x00,
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};
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get_random[6] = nonce_oid >> 8;
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get_random[7] = nonce_oid & 0xff;
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optiga_result ret =
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optiga_execute_command(false, get_random, sizeof(get_random), tx_buffer,
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sizeof(tx_buffer), &tx_size);
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tx_size = 11;
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uint8_t *ptr = tx_buffer;
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*(ptr++) = 0x8C; // command code
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*(ptr++) = 0x00; // random number from TRNG
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write_uint16(&ptr, tx_size - 4);
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write_uint16(&ptr, sizeof(nonce));
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write_uint16(&ptr, nonce_oid);
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*(ptr++) = 0x41; // pre-pending optional data tag
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write_uint16(&ptr, 0);
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optiga_result ret = optiga_execute_command(tx_buffer, tx_size, tx_buffer,
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sizeof(tx_buffer), &tx_size);
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ret = process_output_fixedlen(nonce, sizeof(nonce));
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if (ret != OPTIGA_SUCCESS) {
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return ret;
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}
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tx_size = 11 + sizeof(nonce) + 3 + 32;
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tx_buffer[0] = 0x15;
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tx_buffer[1] = 0x20;
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tx_buffer[2] = 0x00;
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tx_buffer[3] = tx_size - 4;
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tx_buffer[4] = key_oid >> 8;
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tx_buffer[5] = key_oid & 0xff;
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tx_buffer[6] = 0x01;
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tx_buffer[7] = 0x00;
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tx_buffer[8] = 2 + sizeof(nonce);
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tx_buffer[9] = nonce_oid >> 8;
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tx_buffer[10] = nonce_oid & 0xff;
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memcpy(&tx_buffer[11], nonce, sizeof(nonce));
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tx_buffer[11 + sizeof(nonce)] = 0x43;
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tx_buffer[12 + sizeof(nonce)] = 0x00;
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tx_buffer[13 + sizeof(nonce)] = 0x20;
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hmac_sha256(key, 32, nonce, sizeof(nonce), &tx_buffer[14 + sizeof(nonce)]);
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tx_size = 11 + sizeof(nonce) + 3 + SHA256_DIGEST_LENGTH;
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ptr = tx_buffer;
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*(ptr++) = 0x95; // command code
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*(ptr++) = 0x20; // HMAC-SHA256
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write_uint16(&ptr, tx_size - 4);
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ret = optiga_execute_command(false, tx_buffer, tx_size, tx_buffer,
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sizeof(tx_buffer), &tx_size);
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write_uint16(&ptr, key_oid);
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*(ptr++) = 0x01; // start and final data block
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write_uint16(&ptr, 2 + sizeof(nonce)); // data length
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write_uint16(&ptr, nonce_oid);
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memcpy(ptr, nonce, sizeof(nonce));
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ptr += sizeof(nonce);
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*(ptr++) = 0x43; // verification value tag
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write_uint16(&ptr, SHA256_DIGEST_LENGTH);
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hmac_sha256(key, key_size, nonce, sizeof(nonce), ptr);
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ret = optiga_execute_command(tx_buffer, tx_size, tx_buffer, sizeof(tx_buffer),
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&tx_size);
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if (ret != OPTIGA_SUCCESS) {
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return ret;
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}
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@ -420,15 +446,22 @@ optiga_result optiga_set_auto_state(uint16_t nonce_oid, uint16_t key_oid,
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}
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optiga_result optiga_clear_auto_state(uint16_t key_oid) {
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uint8_t decrypt_sym[] = {
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0x15, 0x20, 0x00, 0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x43, 0x00, 0x00,
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};
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decrypt_sym[4] = key_oid >> 8;
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decrypt_sym[5] = key_oid & 0xff;
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tx_size = 12;
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uint8_t *ptr = tx_buffer;
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*(ptr++) = 0x95; // command code
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*(ptr++) = 0x20; // HMAC-SHA256
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write_uint16(&ptr, tx_size - 4);
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optiga_result ret =
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optiga_execute_command(false, decrypt_sym, sizeof(decrypt_sym), tx_buffer,
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sizeof(tx_buffer), &tx_size);
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write_uint16(&ptr, key_oid);
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*(ptr++) = 0x01; // start and final data block
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write_uint16(&ptr, 0); // data length
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*(ptr++) = 0x43; // verification value tag
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write_uint16(&ptr, 0); // verification value length
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optiga_result ret = optiga_execute_command(tx_buffer, tx_size, tx_buffer,
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sizeof(tx_buffer), &tx_size);
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if (ret != OPTIGA_SUCCESS) {
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return ret;
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}
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@ -444,31 +477,30 @@ optiga_result optiga_clear_auto_state(uint16_t key_oid) {
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/*
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* https://github.com/Infineon/optiga-trust-m/blob/develop/documents/OPTIGA%E2%84%A2%20Trust%20M%20Solution%20Reference%20Manual.md#calcsign
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* Returns a signature pair (r,s) encoded as two DER INTEGERs.
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*/
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optiga_result optiga_calc_sign(uint16_t oid, const uint8_t *digest,
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size_t digest_size, uint8_t *signature,
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size_t max_sig_size, size_t *sig_size) {
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if (digest_size + 12 > sizeof(tx_buffer)) {
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tx_size = digest_size + 12;
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if (tx_size > sizeof(tx_buffer)) {
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return OPTIGA_ERR_PARAM;
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}
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tx_size = digest_size + 12;
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tx_buffer[0] = 0x31;
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tx_buffer[1] = 0x11;
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tx_buffer[2] = (tx_size - 4) >> 8;
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tx_buffer[3] = (tx_size - 4) & 0xff;
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tx_buffer[4] = 0x01;
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tx_buffer[5] = digest_size >> 8;
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tx_buffer[6] = digest_size & 0xff;
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memcpy(tx_buffer + 7, digest, digest_size);
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tx_buffer[7 + digest_size] = 0x03;
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tx_buffer[8 + digest_size] = 0x00;
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tx_buffer[9 + digest_size] = 0x02;
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tx_buffer[10 + digest_size] = oid >> 8;
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tx_buffer[11 + digest_size] = oid & 0xff;
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uint8_t *ptr = tx_buffer;
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*(ptr++) = 0xB1; // command code
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*(ptr++) = 0x11; // ECDSA signature scheme
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write_uint16(&ptr, tx_size - 4);
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optiga_result ret = optiga_execute_command(
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false, tx_buffer, tx_size, tx_buffer, sizeof(tx_buffer), &tx_size);
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*(ptr++) = 0x01; // digest tag
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write_prefixed_data(&ptr, digest, digest_size);
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*(ptr++) = 0x03; // signature key OID tag
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write_uint16(&ptr, 2);
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write_uint16(&ptr, oid);
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optiga_result ret = optiga_execute_command(tx_buffer, tx_size, tx_buffer,
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sizeof(tx_buffer), &tx_size);
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if (ret != OPTIGA_SUCCESS) {
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return ret;
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}
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@ -478,28 +510,29 @@ optiga_result optiga_calc_sign(uint16_t oid, const uint8_t *digest,
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/*
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* https://github.com/Infineon/optiga-trust-m/blob/develop/documents/OPTIGA%E2%84%A2%20Trust%20M%20Solution%20Reference%20Manual.md#genkeypair
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* Returns 0x02, public_key_size (2 bytes), public_key.
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* The public_key is encoded as a DER BIT STRING.
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*/
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optiga_result optiga_gen_key_pair(optiga_curve curve, optiga_key_usage usage,
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uint16_t oid, uint8_t *public_key,
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size_t max_public_key_size,
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size_t *public_key_size) {
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tx_size = 13;
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tx_buffer[0] = 0x38;
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tx_buffer[1] = curve;
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tx_buffer[2] = 0x00;
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tx_buffer[3] = 0x09;
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tx_buffer[4] = 0x01;
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tx_buffer[5] = 0x00;
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tx_buffer[6] = 0x02;
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tx_buffer[7] = oid >> 8;
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tx_buffer[8] = oid & 0xff;
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tx_buffer[9] = 0x02;
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tx_buffer[10] = 0x00;
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tx_buffer[11] = 0x01;
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tx_buffer[12] = usage;
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uint8_t *ptr = tx_buffer;
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*(ptr++) = 0xB8; // command code
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*(ptr++) = curve;
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write_uint16(&ptr, tx_size - 4);
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optiga_result ret = optiga_execute_command(
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false, tx_buffer, tx_size, tx_buffer, sizeof(tx_buffer), &tx_size);
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*(ptr++) = 0x01; // private key OID tag
|
||||
write_uint16(&ptr, 2);
|
||||
write_uint16(&ptr, oid);
|
||||
|
||||
*(ptr++) = 0x02; // key usage tag
|
||||
write_uint16(&ptr, 1);
|
||||
*(ptr++) = usage;
|
||||
|
||||
optiga_result ret = optiga_execute_command(tx_buffer, tx_size, tx_buffer,
|
||||
sizeof(tx_buffer), &tx_size);
|
||||
if (ret != OPTIGA_SUCCESS) {
|
||||
return ret;
|
||||
}
|
||||
@ -514,22 +547,21 @@ optiga_result optiga_gen_key_pair(optiga_curve curve, optiga_key_usage usage,
|
||||
optiga_result optiga_gen_sym_key(optiga_aes algorithm, optiga_key_usage usage,
|
||||
uint16_t oid) {
|
||||
tx_size = 13;
|
||||
tx_buffer[0] = 0x39;
|
||||
tx_buffer[1] = algorithm;
|
||||
tx_buffer[2] = 0x00;
|
||||
tx_buffer[3] = 0x09;
|
||||
tx_buffer[4] = 0x01;
|
||||
tx_buffer[5] = 0x00;
|
||||
tx_buffer[6] = 0x02;
|
||||
tx_buffer[7] = oid >> 8;
|
||||
tx_buffer[8] = oid & 0xff;
|
||||
tx_buffer[9] = 0x02;
|
||||
tx_buffer[10] = 0x00;
|
||||
tx_buffer[11] = 0x01;
|
||||
tx_buffer[12] = usage;
|
||||
uint8_t *ptr = tx_buffer;
|
||||
*(ptr++) = 0xB9; // command code
|
||||
*(ptr++) = algorithm;
|
||||
write_uint16(&ptr, tx_size - 4);
|
||||
|
||||
optiga_result ret = optiga_execute_command(
|
||||
false, tx_buffer, tx_size, tx_buffer, sizeof(tx_buffer), &tx_size);
|
||||
*(ptr++) = 0x01; // key OID tag
|
||||
write_uint16(&ptr, 2);
|
||||
write_uint16(&ptr, oid);
|
||||
|
||||
*(ptr++) = 0x02; // key usage tag
|
||||
write_uint16(&ptr, 1);
|
||||
*(ptr++) = usage;
|
||||
|
||||
optiga_result ret = optiga_execute_command(tx_buffer, tx_size, tx_buffer,
|
||||
sizeof(tx_buffer), &tx_size);
|
||||
if (ret != OPTIGA_SUCCESS) {
|
||||
return ret;
|
||||
}
|
||||
@ -539,12 +571,13 @@ optiga_result optiga_gen_sym_key(optiga_aes algorithm, optiga_key_usage usage,
|
||||
|
||||
/*
|
||||
* https://github.com/Infineon/optiga-trust-m/blob/develop/documents/OPTIGA%E2%84%A2%20Trust%20M%20Solution%20Reference%20Manual.md#calcssec
|
||||
* The public_key is encoded as a DER BIT STRING.
|
||||
*/
|
||||
optiga_result optiga_calc_ssec(optiga_curve curve, uint16_t oid,
|
||||
const uint8_t *public_key,
|
||||
size_t public_key_size, uint8_t *secret,
|
||||
size_t max_secret_size, size_t *secret_size) {
|
||||
// Size of a P521 public key encode as a DER BIT STRING.
|
||||
// Size of a P521 public key encoded as a DER BIT STRING.
|
||||
static const size_t MAX_PUBKEY_SIZE = 5 + 2 * 66;
|
||||
|
||||
if (public_key_size > MAX_PUBKEY_SIZE) {
|
||||
@ -552,29 +585,27 @@ optiga_result optiga_calc_ssec(optiga_curve curve, uint16_t oid,
|
||||
}
|
||||
|
||||
tx_size = 16 + public_key_size + 3;
|
||||
tx_buffer[0] = 0x33;
|
||||
tx_buffer[1] = 0x01;
|
||||
tx_buffer[2] = 0x00;
|
||||
tx_buffer[3] = tx_size - 4;
|
||||
tx_buffer[4] = 0x01;
|
||||
tx_buffer[5] = 0x00;
|
||||
tx_buffer[6] = 0x02;
|
||||
tx_buffer[7] = oid >> 8;
|
||||
tx_buffer[8] = oid & 0xff;
|
||||
tx_buffer[9] = 0x05;
|
||||
tx_buffer[10] = 0x00;
|
||||
tx_buffer[11] = 0x01;
|
||||
tx_buffer[12] = curve;
|
||||
tx_buffer[13] = 0x06;
|
||||
tx_buffer[14] = 0x00;
|
||||
tx_buffer[15] = public_key_size;
|
||||
memcpy(&tx_buffer[16], public_key, public_key_size);
|
||||
tx_buffer[16 + public_key_size] = 0x07;
|
||||
tx_buffer[17 + public_key_size] = 0x00;
|
||||
tx_buffer[18 + public_key_size] = 0x00;
|
||||
uint8_t *ptr = tx_buffer;
|
||||
*(ptr++) = 0xB3; // command code
|
||||
*(ptr++) = 0x01; // ECDH key agreement
|
||||
write_uint16(&ptr, tx_size - 4);
|
||||
|
||||
optiga_result ret = optiga_execute_command(
|
||||
false, tx_buffer, tx_size, tx_buffer, sizeof(tx_buffer), &tx_size);
|
||||
*(ptr++) = 0x01; // private key OID tag
|
||||
write_uint16(&ptr, 2);
|
||||
write_uint16(&ptr, oid);
|
||||
|
||||
*(ptr++) = 0x05; // curve tag
|
||||
write_uint16(&ptr, 1);
|
||||
*(ptr++) = curve;
|
||||
|
||||
*(ptr++) = 0x06; // public key tag
|
||||
write_prefixed_data(&ptr, public_key, public_key_size);
|
||||
|
||||
*(ptr++) = 0x07; // export tag
|
||||
write_uint16(&ptr, 0);
|
||||
|
||||
optiga_result ret = optiga_execute_command(tx_buffer, tx_size, tx_buffer,
|
||||
sizeof(tx_buffer), &tx_size);
|
||||
if (ret != OPTIGA_SUCCESS) {
|
||||
return ret;
|
||||
}
|
||||
@ -602,45 +633,32 @@ optiga_result optiga_derive_key(optiga_key_derivation deriv, uint16_t oid,
|
||||
}
|
||||
|
||||
tx_size = is_hkdf ? 23 + salt_size + info_size : 20 + salt_size;
|
||||
tx_buffer[0] = 0x34;
|
||||
tx_buffer[1] = deriv;
|
||||
tx_buffer[2] = (tx_size - 4) >> 8;
|
||||
tx_buffer[3] = (tx_size - 4) & 0xff;
|
||||
tx_buffer[4] = 0x01;
|
||||
tx_buffer[5] = 0x00;
|
||||
tx_buffer[6] = 0x02;
|
||||
tx_buffer[7] = oid >> 8;
|
||||
tx_buffer[8] = oid & 0xff;
|
||||
tx_buffer[9] = 0x02;
|
||||
tx_buffer[10] = salt_size >> 8;
|
||||
tx_buffer[11] = salt_size & 0xff;
|
||||
if (salt_size != 0) {
|
||||
memcpy(&tx_buffer[12], salt, salt_size);
|
||||
}
|
||||
tx_buffer[12 + salt_size] = 0x03;
|
||||
tx_buffer[13 + salt_size] = 0x00;
|
||||
tx_buffer[14 + salt_size] = 0x02;
|
||||
tx_buffer[15 + salt_size] = key_size >> 8;
|
||||
tx_buffer[16 + salt_size] = key_size & 0xff;
|
||||
uint8_t *ptr = tx_buffer;
|
||||
*(ptr++) = 0xB4; // command code
|
||||
*(ptr++) = deriv;
|
||||
write_uint16(&ptr, tx_size - 4);
|
||||
|
||||
*(ptr++) = 0x01; // PRESSEC OID tag
|
||||
write_uint16(&ptr, 2);
|
||||
write_uint16(&ptr, oid);
|
||||
|
||||
*(ptr++) = 0x02; // derivation salt tag
|
||||
write_prefixed_data(&ptr, salt, salt_size);
|
||||
|
||||
*(ptr++) = 0x03; // key size tag
|
||||
write_uint16(&ptr, 2);
|
||||
write_uint16(&ptr, key_size);
|
||||
|
||||
if (is_hkdf) {
|
||||
tx_buffer[17 + salt_size] = 0x04;
|
||||
tx_buffer[18 + salt_size] = info_size >> 8;
|
||||
tx_buffer[19 + salt_size] = info_size & 0xff;
|
||||
if (info_size != 0) {
|
||||
memcpy(&tx_buffer[20 + salt_size], info, info_size);
|
||||
}
|
||||
tx_buffer[20 + salt_size + info_size] = 0x07;
|
||||
tx_buffer[21 + salt_size + info_size] = 0x00;
|
||||
tx_buffer[22 + salt_size + info_size] = 0x00;
|
||||
} else {
|
||||
tx_buffer[17 + salt_size] = 0x07;
|
||||
tx_buffer[18 + salt_size] = 0x00;
|
||||
tx_buffer[19 + salt_size] = 0x00;
|
||||
*(ptr++) = 0x04; // info tag
|
||||
write_prefixed_data(&ptr, info, info_size);
|
||||
}
|
||||
|
||||
optiga_result ret = optiga_execute_command(
|
||||
false, tx_buffer, tx_size, tx_buffer, sizeof(tx_buffer), &tx_size);
|
||||
*(ptr++) = 0x07; // export tag
|
||||
write_uint16(&ptr, 0);
|
||||
|
||||
optiga_result ret = optiga_execute_command(tx_buffer, tx_size, tx_buffer,
|
||||
sizeof(tx_buffer), &tx_size);
|
||||
if (ret == OPTIGA_SUCCESS) {
|
||||
ret = process_output_fixedlen(key, key_size);
|
||||
}
|
||||
@ -723,7 +741,7 @@ optiga_result optiga_set_priv_key(uint16_t oid, const uint8_t priv_key[32]) {
|
||||
|
||||
// First part of the SetObjectProtected command containing the manifest.
|
||||
uint8_t sop_cmd1[145] = {
|
||||
0x03, 0x01, 0x00, 0x8d, 0x30, 0x00, 0x8a, 0x84, 0x43, 0xA1, 0x01, 0x26,
|
||||
0x83, 0x01, 0x00, 0x8d, 0x30, 0x00, 0x8a, 0x84, 0x43, 0xA1, 0x01, 0x26,
|
||||
0xA1, 0x04, 0x42, 0xE0, 0xE8, 0x58, 0x3C, 0x86, 0x01, 0xF6, 0xF6, 0x84,
|
||||
0x22, 0x18, 0x23, 0x03, 0x82, 0x03, 0x10, 0x82, 0x82, 0x20, 0x58, 0x25,
|
||||
0x82, 0x18, 0x29, 0x58, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
@ -735,7 +753,7 @@ optiga_result optiga_set_priv_key(uint16_t oid, const uint8_t priv_key[32]) {
|
||||
// Second part of the SetObjectProtected command containing the fragment
|
||||
// with the private key.
|
||||
uint8_t sop_cmd2[42] = {
|
||||
0x03, 0x01, 0x00, 0x26, 0x31, 0x00, 0x23, 0x01, 0x00, 0x20,
|
||||
0x83, 0x01, 0x00, 0x26, 0x31, 0x00, 0x23, 0x01, 0x00, 0x20,
|
||||
};
|
||||
|
||||
memcpy(&sop_cmd2[10], &priv_key[0], 32);
|
||||
@ -765,7 +783,7 @@ optiga_result optiga_set_priv_key(uint16_t oid, const uint8_t priv_key[32]) {
|
||||
return OPTIGA_ERR_PROCESS;
|
||||
}
|
||||
|
||||
ret = optiga_execute_command(false, sop_cmd1, sizeof(sop_cmd1), tx_buffer,
|
||||
ret = optiga_execute_command(sop_cmd1, sizeof(sop_cmd1), tx_buffer,
|
||||
sizeof(tx_buffer), &tx_size);
|
||||
if (ret != OPTIGA_SUCCESS) {
|
||||
memzero(sop_cmd2, sizeof(sop_cmd2));
|
||||
@ -778,7 +796,7 @@ optiga_result optiga_set_priv_key(uint16_t oid, const uint8_t priv_key[32]) {
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = optiga_execute_command(false, sop_cmd2, sizeof(sop_cmd2), tx_buffer,
|
||||
ret = optiga_execute_command(sop_cmd2, sizeof(sop_cmd2), tx_buffer,
|
||||
sizeof(tx_buffer), &tx_size);
|
||||
memzero(sop_cmd2, sizeof(sop_cmd2));
|
||||
if (ret != OPTIGA_SUCCESS) {
|
||||
|
||||
@ -406,8 +406,8 @@ static optiga_result optiga_receive_packet(uint8_t *packet_control_byte,
|
||||
return OPTIGA_SUCCESS;
|
||||
}
|
||||
|
||||
optiga_result optiga_execute_command(
|
||||
bool presentation_layer, const uint8_t *command_data, size_t command_size,
|
||||
static optiga_result optiga_transceive(
|
||||
bool presentation_layer, const uint8_t *request_data, size_t request_size,
|
||||
uint8_t *response_data, size_t max_response_size, size_t *response_size) {
|
||||
*response_size = 0;
|
||||
optiga_result ret = optiga_ensure_ready();
|
||||
@ -426,7 +426,7 @@ optiga_result optiga_execute_command(
|
||||
size_t packet_data_size = 0;
|
||||
// The first byte of each packet is the packet control byte pctr, so each
|
||||
// packet contains at most OPTIGA_MAX_PACKET_SIZE - 1 bytes of data.
|
||||
if (command_size > OPTIGA_MAX_PACKET_SIZE - 1) {
|
||||
if (request_size > OPTIGA_MAX_PACKET_SIZE - 1) {
|
||||
packet_data_size = OPTIGA_MAX_PACKET_SIZE - 1;
|
||||
if (chain == PCTR_CHAIN_NONE) {
|
||||
chain = PCTR_CHAIN_FIRST;
|
||||
@ -434,7 +434,7 @@ optiga_result optiga_execute_command(
|
||||
chain = PCTR_CHAIN_MIDDLE;
|
||||
}
|
||||
} else {
|
||||
packet_data_size = command_size;
|
||||
packet_data_size = request_size;
|
||||
if (chain != PCTR_CHAIN_NONE) {
|
||||
chain = PCTR_CHAIN_LAST;
|
||||
}
|
||||
@ -442,13 +442,13 @@ optiga_result optiga_execute_command(
|
||||
|
||||
frame_num_out += 1;
|
||||
|
||||
ret = optiga_send_packet(pctr | chain, command_data, packet_data_size);
|
||||
ret = optiga_send_packet(pctr | chain, request_data, packet_data_size);
|
||||
if (ret != OPTIGA_SUCCESS) {
|
||||
return ret;
|
||||
}
|
||||
|
||||
command_data += packet_data_size;
|
||||
command_size -= packet_data_size;
|
||||
request_data += packet_data_size;
|
||||
request_size -= packet_data_size;
|
||||
|
||||
ret = optiga_read();
|
||||
if (ret != OPTIGA_SUCCESS) {
|
||||
@ -466,7 +466,7 @@ optiga_result optiga_execute_command(
|
||||
if (ret != OPTIGA_SUCCESS) {
|
||||
return ret;
|
||||
}
|
||||
} while (command_size != 0);
|
||||
} while (request_size != 0);
|
||||
|
||||
// Receive response packets from OPTIGA.
|
||||
do {
|
||||
@ -502,5 +502,14 @@ optiga_result optiga_execute_command(
|
||||
pctr &= PCTR_CHAIN_MASK;
|
||||
} while (pctr == PCTR_CHAIN_FIRST || pctr == PCTR_CHAIN_MIDDLE);
|
||||
|
||||
return command_size == 0 ? OPTIGA_SUCCESS : OPTIGA_ERR_CMD;
|
||||
return request_size == 0 ? OPTIGA_SUCCESS : OPTIGA_ERR_CMD;
|
||||
}
|
||||
|
||||
optiga_result optiga_execute_command(const uint8_t *command_data,
|
||||
size_t command_size,
|
||||
uint8_t *response_data,
|
||||
size_t max_response_size,
|
||||
size_t *response_size) {
|
||||
return optiga_transcieve(false, command_data, command_size, response_data,
|
||||
max_response_size, response_size);
|
||||
}
|
||||
|
||||
@ -126,7 +126,7 @@ optiga_result optiga_encrypt_sym(optiga_sym_mode mode, uint16_t oid,
|
||||
uint8_t *output, size_t max_output_size,
|
||||
size_t *output_size);
|
||||
optiga_result optiga_set_auto_state(uint16_t nonce_oid, uint16_t key_oid,
|
||||
const uint8_t key[32]);
|
||||
const uint8_t *key, size_t key_size);
|
||||
optiga_result optiga_clear_auto_state(uint16_t key_oid);
|
||||
optiga_result optiga_calc_sign(uint16_t oid, const uint8_t *digest,
|
||||
size_t digest_size, uint8_t *signature,
|
||||
|
||||
@ -29,9 +29,11 @@
|
||||
#define OPTIGA_DATA_REG_LEN 277
|
||||
|
||||
optiga_result optiga_init(void);
|
||||
optiga_result optiga_execute_command(
|
||||
bool presentation_layer, const uint8_t *command_data, size_t command_size,
|
||||
uint8_t *response_data, size_t max_response_size, size_t *response_size);
|
||||
optiga_result optiga_execute_command(const uint8_t *command_data,
|
||||
size_t command_size,
|
||||
uint8_t *response_data,
|
||||
size_t max_response_size,
|
||||
size_t *response_size);
|
||||
|
||||
optiga_result optiga_resync(void);
|
||||
optiga_result optiga_soft_reset(void);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user