JNIEXPORT jint JNICALL Java_com_wolfssl_wolfcrypt_RSA_doDec
(JNIEnv* jenv, jobject jcl, jobject in, jlong inSz, jobject out,
jlong outSz, jobject keyDer, jlong keySz)
{
int ret;
RsaKey myKey;
unsigned int idx;
/* check in and key sz */
if ((inSz < 0) || (keySz < 0) || (outSz < 0)) {
return -1;
}
/* get pointers to our buffers */
unsigned char* inBuf = (*jenv)->GetDirectBufferAddress(jenv, in);
if (inBuf == NULL) {
printf("problem getting in buffer address\n");
return -1;
}
unsigned char* outBuf = (*jenv)->GetDirectBufferAddress(jenv, out);
if (outBuf == NULL) {
printf("problem getting out buffer address\n");
return -1;
}
unsigned char* keyBuf = (*jenv)->GetDirectBufferAddress(jenv, keyDer);
if (keyBuf == NULL) {
printf("problem getting key buffer address\n");
return -1;
}
wc_InitRsaKey(&myKey, NULL);
idx = 0;
ret = wc_RsaPrivateKeyDecode(keyBuf, &idx, &myKey, (unsigned int)keySz);
if (ret == 0) {
ret = wc_RsaPrivateDecrypt(inBuf, (unsigned int)inSz, outBuf,
(unsigned int)outSz, &myKey);
if (ret < 0) {
printf("wc_RsaPrivateDecrypt failed, ret = %d\n", ret);
return ret;
}
} else {
printf("wc_RsaPrivateKeyDecode failed, ret = %d\n", ret);
}
wc_FreeRsaKey(&myKey);
return ret;
}
int rsa_test(void)
{
byte* tmp = NULL;
size_t bytes;
RsaKey key;
WC_RNG rng;
word32 idx = 0;
int ret;
byte in[] = "Everyone gets Friday off.";
word32 inLen = (word32)XSTRLEN((char*)in);
byte out[256];
byte plain[256];
byte* outPtr = NULL;
tmp = (byte*)XMALLOC(FOURK_BUF, HEAP_HINT, DYNAMIC_TYPE_TMP_BUFFER);
if (tmp == NULL) {
ret = MEMORY_E;
goto exit;
}
XMEMCPY(tmp, privkey_der_2048, sizeof(privkey_der_2048));
bytes = sizeof(privkey_der_2048);
ret = wc_InitRsaKey_ex(&key, HEAP_HINT, INVALID_DEVID);
if (ret < 0) {
goto exit;
}
ret = wc_RsaPrivateKeyDecode(tmp, &idx, &key, (word32)bytes);
if (ret < 0) {
goto exit;
}
printf("Key Size: %d\n", wc_RsaEncryptSize(&key));
ret = wc_InitRng(&rng);
if (ret < 0) {
goto exit;
}
#ifdef WC_RSA_BLINDING
ret = wc_RsaSetRNG(&key, &rng);
if (ret < 0) {
goto exit;
}
#endif
ret = wc_RsaPublicEncrypt(in, inLen, out, sizeof(out), &key, &rng);
printf("wc_RsaPublicEncrypt: %d\n", ret);
if (ret < 0) {
goto exit;
}
idx = ret; /* save off encrypted length */
ret = wc_RsaPrivateDecrypt(out, idx, plain, sizeof(plain), &key);
printf("wc_RsaPrivateDecrypt: %d\n", ret);
printf("\n%d", ret);
if (ret < 0) {
goto exit;
}
if (XMEMCMP(plain, in, ret)) {
printf("Compare failed!\n");
goto exit;
}
ret = wc_RsaSSL_Sign(in, inLen, out, sizeof(out), &key, &rng);
printf("wc_RsaSSL_Sign: %d\n", ret);
if (ret < 0) {
goto exit;
}
idx = ret;
XMEMSET(plain, 0, sizeof(plain));
ret = wc_RsaSSL_VerifyInline(out, idx, &outPtr, &key);
printf("wc_RsaSSL_Verify: %d\n", ret);
if (ret < 0) {
goto exit;
}
if (XMEMCMP(in, outPtr, ret)) {
printf("Compare failed!\n");
goto exit;
}
ret = 0; /* success */
exit:
wc_FreeRsaKey(&key);
XFREE(tmp, HEAP_HINT, DYNAMIC_TYPE_TMP_BUFFER);
wc_FreeRng(&rng);
return ret;
}
