static int encrypt_file(void)
{
struct enc_param ep;
ssize_t src_len;
unsigned char *buf;
uint32_t hdrlen;
ssize_t totlen = 0;
int err;
int ret = -1;
src_len = get_file_size(ifname);
if (src_len < 0) {
ERR("unable to get size of '%s'", ifname);
goto out;
}
totlen = enc_compute_buf_len(product, version, src_len);
hdrlen = enc_compute_header_len(product, version);
buf = malloc(totlen);
if (buf == NULL) {
ERR("no memory for the buffer");
goto out;
}
err = read_file_to_buf(ifname, &buf[hdrlen], src_len);
if (err) {
ERR("unable to read from file '%s'", ofname);
goto free_buf;
}
memset(&ep, '\0', sizeof(ep));
ep.key = (unsigned char *) crypt_key;
ep.seed = seed;
ep.longstate = longstate;
ep.csum = buffalo_csum(src_len, &buf[hdrlen], src_len);
ep.datalen = src_len;
strcpy((char *) ep.magic, magic);
strcpy((char *) ep.product, product);
strcpy((char *) ep.version, version);
err = encrypt_buf(&ep, buf, &buf[hdrlen]);
if (err) {
ERR("invalid input file");
goto free_buf;
}
err = write_buf_to_file(ofname, buf, totlen);
if (err) {
ERR("unable to write to file '%s'", ofname);
goto free_buf;
}
ret = 0;
free_buf:
free(buf);
out:
return ret;
}
int sceDrmBBMacUpdate(MAC_KEY *mkey, u8 *buf, int size)
{
int retv = 0, ksize, p, type;
u8 *kbuf;
if (mkey->pad_size > 16) {
retv = 0x80510302;
goto _exit;
}
if (mkey->pad_size + size <= 16) {
memcpy(mkey->pad + mkey->pad_size, buf, size);
mkey->pad_size += size;
retv = 0;
} else {
kbuf = kirk_buf + 0x14;
memcpy(kbuf, mkey->pad, mkey->pad_size);
p = mkey->pad_size;
mkey->pad_size += size;
mkey->pad_size &= 0x0f;
if (mkey->pad_size == 0)
mkey->pad_size = 16;
size -= mkey->pad_size;
memcpy(mkey->pad, buf + size, mkey->pad_size);
type = (mkey->type == 2) ? 0x3A : 0x38;
while (size)
{
ksize = (size + p >= 0x0800) ? 0x0800 : size + p;
memcpy(kbuf + p, buf, ksize - p);
retv = encrypt_buf(kirk_buf, ksize, mkey->key, type);
if (retv)
goto _exit;
size -= (ksize - p);
buf += ksize - p;
p = 0;
}
}
_exit:
return retv;
}
int send_encrypt(struct encryption_ctx *ctx, int sock, unsigned char *buf, size_t *len, int flags) {
unsigned char mybuf[4096];
memcpy(mybuf, buf, *len);
encrypt_buf(ctx, mybuf, len);
return send(sock, mybuf, *len, flags);
}