static bool encrypt_or_decrypt_block(RCore *core, const char *algo, const char *key, int direction, const char *iv) {
//TODO: generalise no_key_mode for all non key encoding/decoding.
int keylen = 0;
bool no_key_mode = !strcmp ("base64", algo) || !strcmp ("base91", algo) || !strcmp ("punycode", algo);
ut8 *binkey = NULL;
if (!strncmp (key, "s:", 2)) {
binkey = (ut8*)strdup (key + 2);
keylen = strlen (key + 2);
} else {
binkey = (ut8 *)strdup (key);
keylen = r_hex_str2bin (key, binkey);
}
if (!no_key_mode && keylen < 1) {
eprintf ("%s key not defined. Use -S [key]\n", ((!direction) ? "Encryption" : "Decryption"));
return false;
}
RCrypto *cry = r_crypto_new ();
if (r_crypto_use (cry, algo)) {
if (!binkey) {
eprintf ("Cannot allocate %d byte(s)\n", keylen);
r_crypto_free (cry);
return false;
}
if (r_crypto_set_key (cry, binkey, keylen, 0, direction)) {
if (iv) {
ut8 *biniv = malloc (strlen (iv) + 1);
int ivlen = r_hex_str2bin (iv, biniv);
if (ivlen < 1) {
ivlen = strlen(iv);
strcpy ((char *)biniv, iv);
}
if (!r_crypto_set_iv (cry, biniv, ivlen)) {
eprintf ("Invalid IV.\n");
return 0;
}
}
r_crypto_update (cry, (const ut8*)core->block, core->blocksize);
r_crypto_final (cry, NULL, 0);
int result_size = 0;
ut8 *result = r_crypto_get_output (cry, &result_size);
if (result) {
r_io_write_at (core->io, core->offset, result, result_size);
eprintf ("Written %d byte(s)\n", result_size);
free (result);
}
} else {
eprintf ("Invalid key\n");
}
free (binkey);
r_crypto_free (cry);
return 0;
} else {
eprintf ("Unknown %s algorithm '%s'\n", ((!direction) ? "encryption" : "decryption") ,algo);
}
r_crypto_free (cry);
return 1;
}
static bool encrypt_or_decrypt_block(RCore *core, const char *algo, const char *key, int direction) {
//TODO: generalise no_key_mode for all non key encoding/decoding.
int keylen = key ? strlen (key): 0;
bool no_key_mode = !strcmp ("base64", algo) || !strcmp ("base91", algo);
if (no_key_mode || keylen > 0) {
RCrypto *cry = r_crypto_new ();
if (r_crypto_use (cry, algo)) {
ut8 *binkey = malloc (keylen + 1);
if (binkey) {
int len = no_key_mode ? 1 : r_hex_str2bin (key, binkey);
if (len < 1) {
len = keylen;
strcpy ((char *)binkey, key);
} else {
keylen = len;
}
if (r_crypto_set_key (cry, binkey, keylen, 0, direction)) {
r_crypto_update (cry, (const ut8*)core->block, core->blocksize);
r_crypto_final (cry, NULL, 0);
int result_size = 0;
ut8 *result = r_crypto_get_output (cry, &result_size);
if (result) {
r_io_write_at (core->io, core->offset, result, result_size);
eprintf ("Written %d bytes\n", result_size);
free (result);
}
} else {
eprintf ("Invalid key\n");
}
free (binkey);
return 0;
} else {
eprintf ("Cannot allocate %d bytes\n", keylen);
}
} else {
eprintf ("Unknown %s algorithm '%s'\n", ((!direction) ? "encryption" : "decryption") ,algo);
}
r_crypto_free (cry);
} else {
eprintf ("%s key not defined. Use -S [key]\n", ((!direction) ? "Encryption" : "Decryption"));
}
return 1;
}
