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/* readkey [-s $slot] -l $label [-p $pin] -f $filename */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#ifndef OPENCRYPTOKI
#include <security/cryptoki.h>
#include <security/pkcs11.h>
#else
#include <opencryptoki/pkcs11.h>
#endif
#include <openssl/conf.h>
#include <openssl/err.h>
#include <openssl/rsa.h>
#include <openssl/pem.h>
static CK_BBOOL truevalue = TRUE;
int
main(int argc, char *argv[])
{
RSA *rsa = NULL;
FILE *fp;
CK_RV rv;
CK_SLOT_ID slot = 0;
CK_SESSION_HANDLE hSession;
CK_UTF8CHAR *pin = NULL;
char *label;
CK_OBJECT_HANDLE key = CK_INVALID_HANDLE;
CK_OBJECT_CLASS kclass = CKO_PRIVATE_KEY;
char *filename;
int error = 0;
int i = 0;
int c, errflg = 0;
CK_ULONG ulObjectCount;
CK_ATTRIBUTE search_template[] = {
{CKA_LABEL, NULL, 0},
{CKA_TOKEN, &truevalue, sizeof (truevalue)},
{CKA_CLASS, &kclass, sizeof (kclass)}
};
CK_BYTE id[32];
CK_BYTE data[8][1024];
CK_ATTRIBUTE attr_template[] = {
{CKA_ID, &id, sizeof (id)},
{CKA_MODULUS, (void *)data[0], 1024}, /* n */
{CKA_PUBLIC_EXPONENT, (void *)data[1], 1024}, /* e */
{CKA_PRIVATE_EXPONENT, (void *)data[2], 1024}, /* d */
{CKA_PRIME_1, (void *)data[3], 1024}, /* p */
{CKA_PRIME_2, (void *)data[4], 1024}, /* q */
{CKA_EXPONENT_1, (void *)data[5], 1024}, /* dmp1 */
{CKA_EXPONENT_2, (void *)data[6], 1024}, /* dmq1 */
{CKA_COEFFICIENT, (void *)data[7], 1024} /* iqmp */
};
extern char *optarg;
extern int optopt;
while ((c = getopt(argc, argv, ":s:l:p:f:")) != -1) {
switch (c) {
case 's':
slot = atoi(optarg);
break;
case 'l':
label = optarg;
break;
case 'p':
pin = (CK_UTF8CHAR *)optarg;
break;
case ':':
fprintf(stderr, "Option -%c requires an operand\n", optopt);
errflg++;
break;
case 'f':
filename = optarg;
break;
case '?':
default:
fprintf(stderr, "Unrecognised option: -%c\n", optopt);
errflg++;
}
}
if ((errflg) || (!label) || (!filename)) {
fprintf(stderr,
"usage: readkey [-s slot] -l label [-p pin] -f filename\n");
exit(1);
}
if (slot)
printf("slot %d\n", slot);
/* Initialize OpenSSL library */
OPENSSL_config(NULL);
rsa = RSA_new();
if (!rsa) {
fprintf(stderr, "RSA_new failed\n");
ERR_print_errors_fp(stderr);
exit(1);
}
/* Initialize the CRYPTOKI library */
rv = C_Initialize(NULL_PTR);
if ((rv != CKR_OK) && (rv != CKR_CRYPTOKI_ALREADY_INITIALIZED)) {
fprintf(stderr, "C_Initialize: Error = 0x%.8X\n", rv);
exit(1);
}
/* Open a session on the slot found */
rv = C_OpenSession(slot, CKF_SERIAL_SESSION,
NULL_PTR, NULL_PTR, &hSession);
if (rv != CKR_OK) {
fprintf(stderr, "C_OpenSession: Error = 0x%.8X\n", rv);
error = 1;
goto exit_program;
}
/* Login to the Token (Keystore) */
if (!pin)
#ifndef OPENCRYPTOKI
pin = (CK_UTF8CHAR *)getpassphrase("Enter Pin: ");
#else
pin = (CK_UTF8CHAR *)getpass("Enter Pin: ");
#endif
rv = C_Login(hSession, CKU_USER, pin, strlen((char *)pin));
memset(pin, 0, strlen((char *)pin));
if (rv != CKR_OK) {
fprintf(stderr, "C_Login: Error = 0x%.8X\n", rv);
error = 1;
goto exit_session;
}
/* Set search template. */
if (strstr(label, "pkcs11:") == label)
label = strstr(label, ":") + 1;
search_template[0].pValue = label;
search_template[0].ulValueLen = strlen(label);
rv = C_FindObjectsInit(hSession, search_template, 3);
if (rv != CKR_OK) {
fprintf(stderr, "C_FindObjectsInit: Error = 0x%.8X\n", rv);
error = 1;
goto exit_session;
}
rv = C_FindObjects(hSession, &key, 1, &ulObjectCount);
if (rv != CKR_OK) {
fprintf(stderr, "C_FindObjects: Error = 0x%.8X\n", rv);
error = 1;
goto exit_search;
}
if (ulObjectCount == 0) {
fprintf(stderr, "C_FindObjects: can't find the key\n");
error = 1;
goto exit_search;
}
rv = C_GetAttributeValue(hSession, key, attr_template, 9);
if (rv != CKR_OK) {
fprintf(stderr, "C_GetAttributeValue: Error = 0x%.8X\n", rv);
error = 1;
goto exit_search;
}
printf("ID[%u]=", attr_template[0].ulValueLen);
for (i = 0; i < attr_template[0].ulValueLen; i++)
printf("%02x", id[i]);
printf("\n");
if (attr_template[1].ulValueLen > 0)
rsa->n = BN_bin2bn(data[0], attr_template[1].ulValueLen, NULL);
if (attr_template[2].ulValueLen > 0)
rsa->e = BN_bin2bn(data[1], attr_template[2].ulValueLen, NULL);
if (attr_template[3].ulValueLen > 0)
rsa->d = BN_bin2bn(data[2], attr_template[3].ulValueLen, NULL);
if (attr_template[4].ulValueLen > 0)
rsa->p = BN_bin2bn(data[3], attr_template[4].ulValueLen, NULL);
if (attr_template[5].ulValueLen > 0)
rsa->q = BN_bin2bn(data[4], attr_template[5].ulValueLen, NULL);
if (attr_template[6].ulValueLen > 0)
rsa->dmp1 = BN_bin2bn(data[5], attr_template[6].ulValueLen, NULL);
if (attr_template[7].ulValueLen > 0)
rsa->dmq1 = BN_bin2bn(data[6], attr_template[7].ulValueLen, NULL);
if (attr_template[8].ulValueLen > 0)
rsa->iqmp = BN_bin2bn(data[7], attr_template[8].ulValueLen, NULL);
rv = C_FindObjects(hSession, &key, 1, &ulObjectCount);
if (rv != CKR_OK) {
fprintf(stderr, "C_FindObjects: Error = 0x%.8X\n", rv);
error = 1;
goto exit_search;
}
if (ulObjectCount != 0) {
fprintf(stderr, "C_FindObjects: found extra keys?\n");
error = 1;
goto exit_search;
}
printf("RSA=");
RSA_print_fp(stdout, rsa, 4);
fp = fopen(filename, "w");
if (fp == NULL) {
printf("Error opening output file.\n");
error = 1;
goto exit_search;
}
if (!PEM_write_RSAPrivateKey(fp, rsa, NULL, NULL, 0, NULL, NULL)) {
printf("Error writing output file.\n");
ERR_print_errors_fp(stderr);
error = 1;
goto exit_search;
}
exit_search:
rv = C_FindObjectsFinal(hSession);
if (rv != CKR_OK) {
fprintf(stderr, "C_FindObjectsFinal: Error = 0x%.8X\n", rv);
error = 1;
}
exit_session:
(void) C_CloseSession(hSession);
exit_program:
(void) C_Finalize(NULL_PTR);
exit(error);
}
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