こんにちは、mycert.crt と root.crt という 2 つの証明書があります。私の証明書がルート証明書によって署名されているかどうかを確認する必要があります。次のコードを使用して次のコードを使用していますが、エラー セグメンテーション エラーが発生しています (コア ダンプ)
static int verifyCerti (BYTE *cert1, BYTE *cert2, int certlenght1, int certlenght2);
int main (int ac, char **av)
{
FILE *f_in, *f_in2;
BYTE *certBuf, *certBuf2;
UINT32 certBufLen,certBufLen2;
UINT32 certLen,certLen2;
int result;
//////////// Reading first certificate/////
certBufLen = 0;
certBuf = malloc (1);
//for (i=0; i<nCerts; i++) {
if ((f_in = fopen (av[1], "rb")) == NULL) {
fprintf (stderr, "Unable to open file %s for input\n", av[1]);
exit (1);
}
fseek (f_in, 0, SEEK_END);
certLen = ftell (f_in);
fseek (f_in, 0, SEEK_SET);
certBuf = realloc (certBuf, certBufLen + certLen);
if (fread (certBuf+certBufLen, 1, certLen, f_in) != certLen) {
fprintf (stderr, "Failed to read file %s\n", av[1]);
exit (1);
}
if (certBuf[certBufLen] != 0x30) {
fprintf (stderr, "Certificate file %s not in binary format\n", av[1]);
exit (1);
}
fclose (f_in);
printf ("we reach here %s \n", av[1]);
////////////////Reading second certificate/////////////////////////////////////////////////
certBufLen2 = 0;
certBuf2 = malloc (1);
if ((f_in2 = fopen (av[2], "rb")) == NULL) {
fprintf (stderr, "Unable to open file %s for input\n", av[2]);
exit (1);
}
fseek (f_in2, 0, SEEK_END);
certLen2 = ftell (f_in2);
fseek (f_in2, 0, SEEK_SET);
certBuf2 = realloc (certBuf2, certBufLen2 + certLen2);
if (fread (certBuf2+certBufLen2, 1, certLen2, f_in2) != certLen2) {
fprintf (stderr, "Failed to read file %s\n", av[2]);
exit (1);
}
if (certBuf2[certBufLen2] != 0x30) {
fprintf (stderr, "Certificate file %s not in binary format\n", av[2]);
exit (1);
}
fclose (f_in2);
printf ("we reach here %s \n", av[2]);
if (verifyCerti (certBuf, certBuf2, certBufLen, certBufLen2) < 0) {
fprintf (stderr, "Certificate chain is incorrect\n");
exit (1);
}
}
static int verifyCerti (BYTE *cert1, BYTE *cert2, int certLen1, int certLen2)
{
X509 *root;
X509 *mycert;
root = d2i_X509 (NULL, (unsigned char const **)&cert2, certLen2);
mycert = d2i_X509 (NULL, (unsigned char const **)&cert1, certLen1);
//Get root certificate into root
//Get mycert into mycert.
//Get the public key.
EVP_PKEY *pubkey = X509_get_pubkey(root);
//verify. result less than or 0 means not verified or some error.
int result = X509_verify(mycert, pubkey);
//free the public key.
EVP_PKEY_free(pubkey);
return result;
}
エラーは X509_verify() が原因だと思いますが、よくわかりません。