Alessio Di Mauro
304 lines
8.4 KiB
C
304 lines
8.4 KiB
C
#include "token_vendors.h"
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#include "yubico_token.h"
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#include "openssl_utils.h"
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#include <string.h>
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#include "debug.h"
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#include <stdbool.h>
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#include "../tool/util.h"
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static CK_RV COMMON_token_login(ykpiv_state *state, CK_USER_TYPE user, CK_UTF8CHAR_PTR pin, CK_ULONG pin_len) {
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int tries = 0; // TODO: this is effectively disregarded, should we add a better value in ykpiv_verify?
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unsigned char key[24];
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size_t key_len = sizeof(key);
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if (user == CKU_USER) {
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if (ykpiv_verify(state, (char *)pin, &tries) != YKPIV_OK) {
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DBG("Failed to login");
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return CKR_PIN_INCORRECT;
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}
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}
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else if (user == CKU_SO) {
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if(ykpiv_hex_decode((char *)pin, pin_len, key, &key_len) != YKPIV_OK) {
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DBG("Failed decoding key");
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return CKR_FUNCTION_FAILED;
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}
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if(ykpiv_authenticate(state, key) != YKPIV_OK) {
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DBG("Failed to authenticate");
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return CKR_PIN_INCORRECT;
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}
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}
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return CKR_OK;
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}
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static CK_RV COMMON_token_generate_key(ykpiv_state *state, CK_BBOOL rsa,
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CK_BYTE key, CK_ULONG key_len, CK_ULONG vendor_defined) {
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// TODO: make a function in ykpiv for this
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unsigned char in_data[11];
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unsigned char *in_ptr = in_data;
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unsigned char data[1024];
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unsigned char templ[] = {0, YKPIV_INS_GENERATE_ASYMMERTRIC, 0, 0};
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unsigned char *certptr;
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unsigned long recv_len = sizeof(data);
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int len_bytes;
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int sw;
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CK_RV rv;
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templ[3] = key;
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*in_ptr++ = 0xac;
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*in_ptr++ = 3;
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*in_ptr++ = 0x80;
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*in_ptr++ = 1;
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switch(key_len) {
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case 2048:
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if (rsa == CK_TRUE)
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in_data[4] = YKPIV_ALGO_RSA2048;
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else
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return CKR_FUNCTION_FAILED;
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break;
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case 1024:
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if (rsa == CK_TRUE)
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*in_ptr++ = YKPIV_ALGO_RSA1024;
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else
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return CKR_FUNCTION_FAILED;
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break;
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case 256:
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if (rsa == CK_FALSE)
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*in_ptr++ = YKPIV_ALGO_ECCP256;
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else
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return CKR_FUNCTION_FAILED;
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break;
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default:
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return CKR_FUNCTION_FAILED;
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}
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// PIN policy and touch
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if (vendor_defined != 0) {
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if (vendor_defined & CKA_PIN_ONCE) {
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in_data[1] += 3;
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*in_ptr++ = YKPIV_PINPOLICY_TAG;
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*in_ptr++ = 0x01;
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*in_ptr++ = YKPIV_PINPOLICY_ONCE;
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}
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else if (vendor_defined & CKA_PIN_ALWAYS) {
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in_data[1] += 3;
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*in_ptr++ = YKPIV_PINPOLICY_TAG;
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*in_ptr++ = 0x01;
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*in_ptr++ = YKPIV_PINPOLICY_ALWAYS;
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}
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if (vendor_defined & CKA_TOUCH_ALWAYS) {
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in_data[1] += 3;
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*in_ptr++ = YKPIV_TOUCHPOLICY_TAG;
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*in_ptr++ = 0x01;
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*in_ptr++ = YKPIV_TOUCHPOLICY_ALWAYS;
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}
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}
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if(ykpiv_transfer_data(state, templ, in_data, in_ptr - in_data, data, &recv_len, &sw) != YKPIV_OK ||
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sw != 0x9000)
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return CKR_DEVICE_ERROR;
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// Create a new empty certificate for the key
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recv_len = sizeof(data);
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if ((rv = do_create_empty_cert(data, recv_len, rsa, data, &recv_len)) != CKR_OK)
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return rv;
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if (recv_len < 0x80)
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len_bytes = 1;
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else if (recv_len < 0xff)
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len_bytes = 2;
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else
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len_bytes = 3;
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certptr = data;
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memmove(data + len_bytes + 1, data, recv_len);
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*certptr++ = 0x70;
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certptr += set_length(certptr, recv_len);
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certptr += recv_len;
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*certptr++ = 0x71;
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*certptr++ = 1;
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*certptr++ = 0; /* certinfo (gzip etc) */
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*certptr++ = 0xfe; /* LRC */
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*certptr++ = 0;
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// Store the certificate into the token
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if (ykpiv_save_object(state, key_to_object_id(key), data, (size_t)(certptr - data)) != YKPIV_OK)
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return CKR_DEVICE_ERROR;
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return CKR_OK;
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}
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static CK_RV COMMON_token_import_cert(ykpiv_state *state, CK_ULONG cert_id, CK_BYTE_PTR in) {
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unsigned char certdata[2100];
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unsigned char *certptr;
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CK_ULONG cert_len;
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CK_RV rv;
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// Check whether or not we have a valid cert
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if ((rv = do_check_cert(in, &cert_len)) != CKR_OK)
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return rv;
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if (cert_len > 2100)
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return CKR_FUNCTION_FAILED;
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certptr = certdata;
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*certptr++ = 0x70;
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certptr += set_length(certptr, cert_len);
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memcpy(certptr, in, cert_len);
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certptr += cert_len;
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*certptr++ = 0x71;
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*certptr++ = 1;
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*certptr++ = 0; /* certinfo (gzip etc) */
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*certptr++ = 0xfe; /* LRC */
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*certptr++ = 0;
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// Store the certificate into the token
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if (ykpiv_save_object(state, cert_id, certdata, (size_t)(certptr - certdata)) != YKPIV_OK)
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return CKR_DEVICE_ERROR;
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return CKR_OK;
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}
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CK_RV COMMON_token_import_private_key(ykpiv_state *state, CK_BYTE key_id,
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CK_BYTE_PTR p, CK_ULONG p_len,
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CK_BYTE_PTR q, CK_ULONG q_len,
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CK_BYTE_PTR dp, CK_ULONG dp_len,
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CK_BYTE_PTR dq, CK_ULONG dq_len,
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CK_BYTE_PTR qinv, CK_ULONG qinv_len,
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CK_BYTE_PTR ec_data, CK_ULONG ec_data_len,
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CK_ULONG vendor_defined) {
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CK_BYTE pin_policy;
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CK_BYTE touch_policy;
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CK_BYTE algo;
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ykpiv_rc rc;
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if (p == NULL) {
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if (ec_data_len == 32 || ec_data_len == 31)
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algo = YKPIV_ALGO_ECCP256;
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else
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algo = YKPIV_ALGO_ECCP384;
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}
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else if (ec_data == NULL) {
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if (p_len == 64)
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algo = YKPIV_ALGO_RSA1024;
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else
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algo = YKPIV_ALGO_RSA2048;
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}
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else
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return CKR_FUNCTION_FAILED;
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pin_policy = YKPIV_PINPOLICY_DEFAULT;
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touch_policy = YKPIV_TOUCHPOLICY_DEFAULT;
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if (vendor_defined != 0) {
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if (vendor_defined & CKA_PIN_ONCE) {
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pin_policy = YKPIV_PINPOLICY_ONCE;
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}
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else if (vendor_defined & CKA_PIN_ALWAYS) {
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pin_policy = YKPIV_PINPOLICY_ALWAYS;
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}
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else if (vendor_defined & CKA_PIN_NEVER) {
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pin_policy = YKPIV_PINPOLICY_NEVER;
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}
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else
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return CKR_ATTRIBUTE_VALUE_INVALID;
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if (vendor_defined & CKA_TOUCH_ALWAYS) {
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touch_policy = YKPIV_TOUCHPOLICY_ALWAYS;
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}
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else if (vendor_defined & CKA_TOUCH_NEVER) {
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touch_policy = YKPIV_TOUCHPOLICY_NEVER;
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}
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else
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return CKR_ATTRIBUTE_VALUE_INVALID;
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}
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rc = ykpiv_import_private_key(state, key_id, algo,
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p, p_len,
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q, q_len,
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dp, dp_len,
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dq, dq_len,
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qinv, qinv_len,
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ec_data, ec_data_len,
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pin_policy, touch_policy);
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if (rc != YKPIV_OK)
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return CKR_FUNCTION_FAILED;
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return CKR_OK;
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}
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CK_RV COMMON_token_delete_cert(ykpiv_state *state, CK_ULONG cert_id) {
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if (ykpiv_save_object(state, cert_id, NULL, 0) != YKPIV_OK)
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return CKR_DEVICE_ERROR;
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return CKR_OK;
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}
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token_vendor_t get_token_vendor(vendor_id_t vid) {
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token_vendor_t v;
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switch (vid) {
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case YUBICO:
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v.get_token_label = YUBICO_get_token_label;
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v.get_token_manufacturer = YUBICO_get_token_manufacturer;
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v.get_token_model = YUBICO_get_token_model;
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v.get_token_flags = YUBICO_get_token_flags;
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v.get_token_version = YUBICO_get_token_version;
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v.get_token_serial = YUBICO_get_token_serial;
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v.get_token_mechanisms_num = YUBICO_get_token_mechanisms_num;
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v.get_token_mechanism_list = YUBICO_get_token_mechanism_list;
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v.get_token_mechanism_info = YUBICO_get_token_mechanism_info;
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v.get_token_objects_num = YUBICO_get_token_objects_num;
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v.get_token_object_list = YUBICO_get_token_object_list;
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v.get_token_raw_certificate = YUBICO_get_token_raw_certificate;
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v.token_login = COMMON_token_login;
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v.token_generate_key = COMMON_token_generate_key;
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v.token_import_cert = COMMON_token_import_cert;
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v.token_import_private_key = COMMON_token_import_private_key;
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v.token_delete_cert = COMMON_token_delete_cert;
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break;
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case UNKNOWN:
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default:
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v.get_token_label = NULL;
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v.get_token_manufacturer = NULL;
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v.get_token_model = NULL;
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v.get_token_flags = NULL;
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v.get_token_version = NULL;
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v.get_token_serial = NULL;
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v.get_token_mechanisms_num = NULL;
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v.get_token_mechanism_list = NULL;
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v.get_token_mechanism_info = NULL;
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v.get_token_objects_num = NULL;
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v.get_token_object_list = NULL;
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v.get_token_raw_certificate = NULL;
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v.token_login = NULL;
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v.token_generate_key = NULL;
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v.token_import_cert = NULL;
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v.token_import_private_key = NULL;
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v.token_delete_cert = NULL;
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}
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return v;
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}
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