dearsky/pico-hsm
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Splitting the core onto another repo, which can be reused by other smart applications.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos
2022-04-19 18:39:52 +02:00
parent b09fc75913
commit 522860f736
24 changed files with 286 additions and 3730 deletions
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26
src/hsm/eac.c
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@@ -83,9 +83,9 @@ int sm_sign(uint8_t *in, size_t in_len, uint8_t *out) {
int sm_unwrap() {
uint8_t sm_indicator = (CLA(apdu) >> 2) & 0x3;
if (sm_indicator == 0)
return HSM_OK;
return CCID_OK;
int r = sm_verify();
if (r != HSM_OK)
if (r != CCID_OK)
return r;
int le = sm_get_le();
if (le >= 0)
@@ -106,22 +106,22 @@ int sm_unwrap() {
}
}
if (!body)
return HSM_WRONG_DATA;
return CCID_WRONG_DATA;
if (is87 && *body++ != 0x1) {
return HSM_WRONG_PADDING;
return CCID_WRONG_PADDING;
}
sm_update_iv();
aes_decrypt(sm_kenc, sm_iv, 128, HSM_AES_MODE_CBC, body, body_size);
memmove(apdu.cmd_apdu_data, body, body_size);
apdu.cmd_apdu_data_len = sm_remove_padding(apdu.cmd_apdu_data, body_size);
DEBUG_PAYLOAD(apdu.cmd_apdu_data, apdu.cmd_apdu_data_len);
return HSM_OK;
return CCID_OK;
}
int sm_wrap() {
uint8_t sm_indicator = (CLA(apdu) >> 2) & 0x3;
if (sm_indicator == 0)
return HSM_OK;
return CCID_OK;
uint8_t input[1024];
size_t input_len = 0;
memset(input, 0, sizeof(input));
@@ -176,7 +176,7 @@ int sm_wrap() {
res_APDU_size += 8;
if (apdu.expected_res_size > 0)
apdu.expected_res_size = res_APDU_size;
return HSM_OK;
return CCID_OK;
}
int sm_get_le() {
@@ -210,7 +210,7 @@ int sm_verify() {
if (data_len % sm_blocksize)
data_len += sm_blocksize;
if (data_len+(add_header ? sm_blocksize : 0) > 1024)
return HSM_WRONG_LENGTH;
return CCID_WRONG_LENGTH;
mbedtls_mpi ssc;
mbedtls_mpi_init(&ssc);
mbedtls_mpi_add_int(&ssc, &sm_mSSC, 1);
@@ -219,7 +219,7 @@ int sm_verify() {
input_len += sm_blocksize;
mbedtls_mpi_free(&ssc);
if (r != 0)
return HSM_EXEC_ERROR;
return CCID_EXEC_ERROR;
if (add_header) {
input[input_len++] = CLA(apdu);
input[input_len++] = INS(apdu);
@@ -248,7 +248,7 @@ int sm_verify() {
}
}
if (!mac)
return HSM_WRONG_DATA;
return CCID_WRONG_DATA;
if (some_added) {
input[input_len++] = 0x80;
input_len += (sm_blocksize - (input_len%sm_blocksize));
@@ -256,10 +256,10 @@ int sm_verify() {
uint8_t signature[16];
r = sm_sign(input, input_len, signature);
if (r != 0)
return HSM_EXEC_ERROR;
return CCID_EXEC_ERROR;
if (memcmp(signature, mac, mac_len) == 0)
return HSM_OK;
return HSM_VERIFICATION_FAILED;
return CCID_OK;
return CCID_VERIFICATION_FAILED;
}
int sm_remove_padding(const uint8_t *data, size_t data_len) {