第二个问题，编译官方文档中第七章的示例程序，得到如下错误提示：
"LTC_ARGCHK 'ltc_mp.name != NULL' failure on line 34 of file > src/pk/ rsa/rsa_make_key.c"
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#include <tomcrypt.h>
#pragma comment(lib,"tomcrypt.lib")
int main(void)
{
int err, hash_idx, prng_idx, res;
unsigned long l1, l2;
unsigned char pt[16], pt2[16], out[1024];
rsa_key key;
/* register prng/hash */
if (register_prng(&sprng_desc) == -1)
{
printf("Error registering sprng");
return EXIT_FAILURE;
}
/* register a math library (in this case TomsFastMath) */
ltc_mp = tfm_desc;
if (register_hash(&sha1_desc) == -1)
{
printf("Error registering sha1");
return EXIT_FAILURE;
}
hash_idx = find_hash("sha1");
prng_idx = find_prng("sprng");
/* make an RSA-1024 key */
if ((err = rsa_make_key(NULL, /* PRNG state */
prng_idx, /* PRNG idx */
1024/8, /* 1024-bit key */
65537, /* we like e=65537 */
&key) /* where to store the key */
) != CRYPT_OK)
{
printf("rsa_make_key %s", error_to_string(err));
return EXIT_FAILURE;
}
/* fill in pt[] with a key we want to send ... */
l1 = sizeof(out);
if ((err = rsa_encrypt_key(pt, /* data we wish to encrypt */
16, /* data is 16 bytes long */
out, /* where to store ciphertext */
&l1, /* length of ciphertext */
"TestApp", /* our lparam for this program */
7, /* lparam is 7 bytes long */
NULL, /* PRNG state */
prng_idx, /* prng idx */
hash_idx, /* hash idx */
&key) /* our RSA key */
) != CRYPT_OK)
{
printf("rsa_encrypt_key %s", error_to_string(err));
return EXIT_FAILURE;
}
/* now let’s decrypt the encrypted key */
l2 = sizeof(pt2);
if ((err = rsa_decrypt_key(out, /* encrypted data */
l1, /* length of ciphertext */
pt2, /* where to put plaintext */
&l2, /* plaintext length */
"TestApp", /* lparam for this program */
7, /* lparam is 7 bytes long */
hash_idx, /* hash idx */
&res, /* validity of data */
&key) /* our RSA key */
) != CRYPT_OK)
{
printf("rsa_decrypt_key %s", error_to_string(err));
return EXIT_FAILURE;
}
/* if all went well pt == pt2, l2 == 16, res == 1 */
}
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