crypto_punycode.c

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// SPDX-FileCopyrightText: 2009-2016 pancake <pancake@nopcode.org>
// SPDX-License-Identifier: LGPL-3.0-only
 
#include <rz_util.h>
#include <rz_lib.h>
#include <rz_crypto.h>
 
static bool punycode_set_key(RzCrypto *cry, const ut8 *key, int keylen, int mode, int direction) {
    cry->dir = direction;
    return true;
}
 
static int punycode_get_key_size(RzCrypto *cry) {
    return 0;
}
 
static bool punycode_use(const char *algo) {
    return !strcmp(algo, "punycode");
}
 
static bool update(RzCrypto *cry, const ut8 *buf, int len) {
    if (len < 1 || !buf) {
        return false;
    }
 
    char *obuf;
    int olen;
    if (cry->dir == RZ_CRYPTO_DIR_DECRYPT) {
        obuf = rz_punycode_decode((const char *)buf, len, &olen);
    } else {
        obuf = rz_punycode_encode(buf, len, &olen);
    }
    rz_crypto_append(cry, (ut8 *)obuf, olen);
    free(obuf);
    return true;
}
 
static bool final(RzCrypto *cry, const ut8 *buf, int len) {
    return update(cry, buf, len);
}
 
RzCryptoPlugin rz_crypto_plugin_punycode = {
    .name = "punycode",
    .author = "pancake",
    .license = "LGPL-3",
    .set_key = punycode_set_key,
    .get_key_size = punycode_get_key_size,
    .use = punycode_use,
    .update = update,
    .final = final
};
 
#ifndef RZ_PLUGIN_INCORE
RZ_API RzLibStruct rizin_plugin = {
    .type = RZ_LIB_TYPE_CRYPTO,
    .data = &rz_crypto_plugin_punycode,
    .version = RZ_VERSION
};
#endif