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reset device

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This commit is contained in:
Conor Patrick 2018-05-22 21:25:44 -04:00
parent 35900455d5
commit 6049f25bd4
4 changed files with 26 additions and 0 deletions
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5
crypto.c
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@ -38,6 +38,11 @@ void crypto_sha256_init()
sha256_init(&sha256_ctx); sha256_init(&sha256_ctx);
} }
void crypto_reset_master_secret()
{
ctap_generate_rng(master_secret, 32);
}
void crypto_sha256_update(uint8_t * data, size_t len) void crypto_sha256_update(uint8_t * data, size_t len)
{ {

1
crypto.h
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@ -33,6 +33,7 @@ void crypto_aes256_reset_iv();
void crypto_aes256_decrypt(uint8_t * buf, int lenth); void crypto_aes256_decrypt(uint8_t * buf, int lenth);
void crypto_aes256_encrypt(uint8_t * buf, int lenth); void crypto_aes256_encrypt(uint8_t * buf, int lenth);
void crypto_reset_master_secret();
extern const uint8_t attestation_cert_der[]; extern const uint8_t attestation_cert_der[];

19
ctap.c
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@ -1994,6 +1994,14 @@ uint8_t ctap_handle_packet(uint8_t * pkt_raw, int length, CTAP_RESPONSE * resp)
break; break;
case CTAP_RESET: case CTAP_RESET:
printf1(TAG_CTAP,"CTAP_RESET\n"); printf1(TAG_CTAP,"CTAP_RESET\n");
if (ctap_user_presence_test())
{
ctap_reset();
}
else
{
status = CTAP2_ERR_NOT_ALLOWED;
}
break; break;
case GET_NEXT_ASSERTION: case GET_NEXT_ASSERTION:
printf1(TAG_CTAP,"CTAP_NEXT_ASSERTION\n"); printf1(TAG_CTAP,"CTAP_NEXT_ASSERTION\n");
@ -2085,3 +2093,14 @@ void ctap_reset_pin_attempts()
_flash_tries = 8; _flash_tries = 8;
} }
void ctap_reset()
{
_flash_tries = 8;
PIN_CODE_SET = 0;
DEVICE_LOCKOUT = 0;
memset(PIN_CODE,0,sizeof(PIN_CODE));
memset(PIN_CODE_HASH,0,sizeof(PIN_CODE_HASH));
crypto_ecc256_make_key_pair(KEY_AGREEMENT_PUB, KEY_AGREEMENT_PRIV);
crypto_reset_master_secret();
}

1
ctap.h
View File

@ -229,6 +229,7 @@ int8_t ctap_leftover_pin_attempts();
void ctap_reset_pin_attempts(); void ctap_reset_pin_attempts();
uint8_t ctap_is_pin_set(); uint8_t ctap_is_pin_set();
uint8_t ctap_pin_matches(uint8_t * pin, int len); uint8_t ctap_pin_matches(uint8_t * pin, int len);
void ctap_reset();
// Test for user presence // Test for user presence