Add ykpiv_attest() and use it in yubico-piv-tool

This commit is contained in:
Trevor Bentley
2017-09-20 16:29:37 +02:00
parent 248980fe27
commit f6b817f056
3 changed files with 43 additions and 30 deletions
+20 -30
View File
@@ -1604,55 +1604,45 @@ static bool list_readers(ykpiv_state *state) {
static bool attest(ykpiv_state *state, const char *slot,
enum enum_key_format key_format, const char *output_file_name) {
unsigned char data[2048];
unsigned char data[YKPIV_OBJ_MAX_SIZE];
unsigned long len = sizeof(data);
bool ret = false;
X509 *x509 = NULL;
unsigned char templ[] = {0, YKPIV_INS_ATTEST, 0, 0};
int key;
int sw;
FILE *output_file = open_file(output_file_name, OUTPUT);
if(!output_file) {
return false;
}
sscanf(slot, "%2x", &key);
templ[2] = key;
if(key_format != key_format_arg_PEM && key_format != key_format_arg_DER) {
fprintf(stderr, "Only PEM and DER format are supported for attest..\n");
return false;
}
if(ykpiv_transfer_data(state, templ, NULL, 0, data, &len, &sw) != YKPIV_OK) {
fprintf(stderr, "Failed to communicate.\n");
goto attest_out;
} else if(sw != SW_SUCCESS) {
fprintf(stderr, "Failed to attest key.\n");
sscanf(slot, "%2x", &key);
if (ykpiv_attest(state, key, data, &len) != YKPIV_OK) {
fprintf(stderr, "Failed to attest data.\n");
goto attest_out;
}
if(data[0] == 0x30) {
if(key_format == key_format_arg_PEM) {
const unsigned char *ptr = data;
int len2 = len;
x509 = X509_new();
if(!x509) {
fprintf(stderr, "Failed allocating x509 structure.\n");
goto attest_out;
}
x509 = d2i_X509(NULL, &ptr, len2);
if(!x509) {
fprintf(stderr, "Failed parsing x509 information.\n");
goto attest_out;
}
PEM_write_X509(output_file, x509);
ret = true;
} else {
fwrite(data, len, 1, output_file);
if(key_format == key_format_arg_PEM) {
const unsigned char *ptr = data;
int len2 = len;
x509 = X509_new();
if(!x509) {
fprintf(stderr, "Failed allocating x509 structure.\n");
goto attest_out;
}
ret = true;
x509 = d2i_X509(NULL, &ptr, len2);
if(!x509) {
fprintf(stderr, "Failed parsing x509 information.\n");
goto attest_out;
}
PEM_write_X509(output_file, x509);
} else {
fwrite(data, len, 1, output_file);
}
ret = true;
attest_out:
if(output_file != stdout) {