__attribute__((visibility("default"))) int openssl_verify_data(
const keymaster0_device_t*, const void* params, const uint8_t* keyBlob,
const size_t keyBlobLength, const uint8_t* signedData, const size_t signedDataLength,
const uint8_t* signature, const size_t signatureLength) {
if (signedData == NULL || signature == NULL) {
ALOGW("data or signature buffers == NULL");
return -1;
}
Unique_EVP_PKEY pkey(unwrap_key(keyBlob, keyBlobLength));
if (pkey.get() == NULL) {
return -1;
}
int type = EVP_PKEY_type(pkey->type);
if (type == EVP_PKEY_DSA) {
const keymaster_dsa_sign_params_t* sign_params =
reinterpret_cast<const keymaster_dsa_sign_params_t*>(params);
return verify_dsa(pkey.get(), const_cast<keymaster_dsa_sign_params_t*>(sign_params),
signedData, signedDataLength, signature, signatureLength);
} else if (type == EVP_PKEY_RSA) {
const keymaster_rsa_sign_params_t* sign_params =
reinterpret_cast<const keymaster_rsa_sign_params_t*>(params);
return verify_rsa(pkey.get(), const_cast<keymaster_rsa_sign_params_t*>(sign_params),
signedData, signedDataLength, signature, signatureLength);
} else if (type == EVP_PKEY_EC) {
const keymaster_ec_sign_params_t* sign_params =
reinterpret_cast<const keymaster_ec_sign_params_t*>(params);
return verify_ec(pkey.get(), const_cast<keymaster_ec_sign_params_t*>(sign_params),
signedData, signedDataLength, signature, signatureLength);
} else {
ALOGW("Unsupported key type %d", type);
return -1;
}
}
static int openssl_sign_data(const keymaster_device_t* dev,
const void* params,
const uint8_t* keyBlob, const size_t keyBlobLength,
const uint8_t* data, const size_t dataLength,
uint8_t** signedData, size_t* signedDataLength) {
int result = -1;
EVP_MD_CTX ctx;
size_t maxSize;
if (data == NULL) {
ALOGW("input data to sign == NULL");
return -1;
} else if (signedData == NULL || signedDataLength == NULL) {
ALOGW("output signature buffer == NULL");
return -1;
}
Unique_EVP_PKEY pkey(unwrap_key(keyBlob, keyBlobLength));
if (pkey.get() == NULL) {
return -1;
}
if (EVP_PKEY_type(pkey->type) != EVP_PKEY_RSA) {
ALOGW("Cannot handle non-RSA keys yet");
return -1;
}
keymaster_rsa_sign_params_t* sign_params = (keymaster_rsa_sign_params_t*) params;
if (sign_params->digest_type != DIGEST_NONE) {
ALOGW("Cannot handle digest type %d", sign_params->digest_type);
return -1;
} else if (sign_params->padding_type != PADDING_NONE) {
ALOGW("Cannot handle padding type %d", sign_params->padding_type);
return -1;
}
Unique_RSA rsa(EVP_PKEY_get1_RSA(pkey.get()));
if (rsa.get() == NULL) {
logOpenSSLError("openssl_sign_data");
return -1;
}
UniquePtr<uint8_t> signedDataPtr(reinterpret_cast<uint8_t*>(malloc(dataLength)));
if (signedDataPtr.get() == NULL) {
logOpenSSLError("openssl_sign_data");
return -1;
}
unsigned char* tmp = reinterpret_cast<unsigned char*>(signedDataPtr.get());
if (RSA_private_encrypt(dataLength, data, tmp, rsa.get(), RSA_NO_PADDING) <= 0) {
logOpenSSLError("openssl_sign_data");
return -1;
}
*signedDataLength = dataLength;
*signedData = signedDataPtr.release();
return 0;
}
static int openssl_verify_data(const keymaster_device_t* dev,
const void* params,
const uint8_t* keyBlob, const size_t keyBlobLength,
const uint8_t* signedData, const size_t signedDataLength,
const uint8_t* signature, const size_t signatureLength) {
if (signedData == NULL || signature == NULL) {
ALOGW("data or signature buffers == NULL");
return -1;
}
Unique_EVP_PKEY pkey(unwrap_key(keyBlob, keyBlobLength));
if (pkey.get() == NULL) {
return -1;
}
if (EVP_PKEY_type(pkey->type) != EVP_PKEY_RSA) {
ALOGW("Cannot handle non-RSA keys yet");
return -1;
}
keymaster_rsa_sign_params_t* sign_params = (keymaster_rsa_sign_params_t*) params;
if (sign_params->digest_type != DIGEST_NONE) {
ALOGW("Cannot handle digest type %d", sign_params->digest_type);
return -1;
} else if (sign_params->padding_type != PADDING_NONE) {
ALOGW("Cannot handle padding type %d", sign_params->padding_type);
return -1;
} else if (signatureLength != signedDataLength) {
ALOGW("signed data length must be signature length");
return -1;
}
Unique_RSA rsa(EVP_PKEY_get1_RSA(pkey.get()));
if (rsa.get() == NULL) {
logOpenSSLError("openssl_verify_data");
return -1;
}
UniquePtr<uint8_t> dataPtr(reinterpret_cast<uint8_t*>(malloc(signedDataLength)));
if (dataPtr.get() == NULL) {
logOpenSSLError("openssl_verify_data");
return -1;
}
unsigned char* tmp = reinterpret_cast<unsigned char*>(dataPtr.get());
if (!RSA_public_decrypt(signatureLength, signature, tmp, rsa.get(), RSA_NO_PADDING)) {
logOpenSSLError("openssl_verify_data");
return -1;
}
int result = 0;
for (size_t i = 0; i < signedDataLength; i++) {
result |= tmp[i] ^ signedData[i];
}
return result == 0 ? 0 : -1;
}
__attribute__((visibility("default"))) int openssl_get_keypair_public(const keymaster0_device_t*,
const uint8_t* key_blob,
const size_t key_blob_length,
uint8_t** x509_data,
size_t* x509_data_length) {
if (x509_data == NULL || x509_data_length == NULL) {
ALOGW("output public key buffer == NULL");
return -1;
}
Unique_EVP_PKEY pkey(unwrap_key(key_blob, key_blob_length));
if (pkey.get() == NULL) {
return -1;
}
int len = i2d_PUBKEY(pkey.get(), NULL);
if (len <= 0) {
logOpenSSLError("openssl_get_keypair_public");
return -1;
}
UniquePtr<uint8_t, Malloc_Free> key(static_cast<uint8_t*>(malloc(len)));
if (key.get() == NULL) {
ALOGE("Could not allocate memory for public key data");
return -1;
}
unsigned char* tmp = reinterpret_cast<unsigned char*>(key.get());
if (i2d_PUBKEY(pkey.get(), &tmp) != len) {
logOpenSSLError("openssl_get_keypair_public");
return -1;
}
ALOGV("Length of x509 data is %d", len);
*x509_data_length = len;
*x509_data = key.release();
return 0;
}
int main(int argc, char * const argv[])
{
int err = 0, r, c, long_optind = 0;
int action_count = 0;
int do_initialize = 0;
int do_import_dkek_share = 0;
int do_create_dkek_share = 0;
int do_wrap_key = 0;
int do_unwrap_key = 0;
sc_path_t path;
sc_file_t *file = NULL;
const char *opt_so_pin = NULL;
const char *opt_pin = NULL;
const char *opt_filename = NULL;
char *opt_password = NULL;
int opt_retry_counter = 3;
int opt_dkek_shares = -1;
int opt_key_reference = -1;
int opt_password_shares_threshold = -1;
int opt_password_shares_total = -1;
int opt_force = 0;
int opt_iter = 10000000;
sc_context_param_t ctx_param;
setbuf(stderr, NULL);
setbuf(stdout, NULL);
while (1) {
c = getopt_long(argc, argv, "XC:I:W:U:s:i:fr:wv", options, &long_optind);
if (c == -1)
break;
if (c == '?')
util_print_usage_and_die(app_name, options, option_help, NULL);
switch (c) {
case 'X':
do_initialize = 1;
action_count++;
break;
case 'C':
do_create_dkek_share = 1;
opt_filename = optarg;
action_count++;
break;
case 'I':
do_import_dkek_share = 1;
opt_filename = optarg;
action_count++;
break;
case 'W':
do_wrap_key = 1;
opt_filename = optarg;
action_count++;
break;
case 'U':
do_unwrap_key = 1;
opt_filename = optarg;
action_count++;
break;
case OPT_PASSWORD:
opt_password = optarg;
break;
case OPT_SO_PIN:
opt_so_pin = optarg;
break;
case OPT_PIN:
opt_pin = optarg;
break;
case OPT_RETRY:
opt_retry_counter = atol(optarg);
break;
case OPT_PASSWORD_SHARES_THRESHOLD:
opt_password_shares_threshold = atol(optarg);
break;
case OPT_PASSWORD_SHARES_TOTAL:
opt_password_shares_total = atol(optarg);
break;
case 's':
opt_dkek_shares = atol(optarg);
break;
case 'f':
opt_force = 1;
break;
case 'i':
opt_key_reference = atol(optarg);
break;
case 'r':
opt_reader = optarg;
break;
case 'v':
verbose++;
break;
case 'w':
opt_wait = 1;
break;
}
}
CRYPTO_malloc_init();
ERR_load_crypto_strings();
OpenSSL_add_all_algorithms();
memset(&ctx_param, 0, sizeof(sc_context_param_t));
ctx_param.app_name = app_name;
r = sc_context_create(&ctx, &ctx_param);
if (r != SC_SUCCESS) {
fprintf(stderr, "Failed to establish context: %s\n", sc_strerror(r));
return 1;
}
/* Only change if not in opensc.conf */
if (verbose > 1 && ctx->debug == 0) {
ctx->debug = verbose;
sc_ctx_log_to_file(ctx, "stderr");
}
err = util_connect_card(ctx, &card, opt_reader, opt_wait, verbose);
if (r != SC_SUCCESS) {
fprintf(stderr, "Failed to connect to card: %s\n", sc_strerror(r));
goto end;
}
sc_path_set(&path, SC_PATH_TYPE_DF_NAME, sc_hsm_aid.value, sc_hsm_aid.len, 0, 0);
r = sc_select_file(card, &path, &file);
if (r != SC_SUCCESS) {
fprintf(stderr, "Failed to select application: %s\n", sc_strerror(r));
goto end;
}
if (do_initialize) {
initialize(card, opt_so_pin, opt_pin, opt_retry_counter, opt_dkek_shares);
}
if (do_create_dkek_share) {
create_dkek_share(card, opt_filename, opt_iter, opt_password, opt_password_shares_threshold, opt_password_shares_total);
}
if (do_import_dkek_share) {
import_dkek_share(card, opt_filename, opt_iter, opt_password, opt_password_shares_total);
}
if (do_wrap_key) {
wrap_key(card, opt_key_reference, opt_filename, opt_pin);
}
if (do_unwrap_key) {
unwrap_key(card, opt_key_reference, opt_filename, opt_pin, opt_force);
}
if (action_count == 0) {
print_info(card, file);
}
end:
if (card) {
sc_unlock(card);
sc_disconnect_card(card);
}
if (ctx)
sc_release_context(ctx);
ERR_print_errors_fp(stderr);
return err;
}
