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Crypt the swapfile.

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This commit is contained in:
Bram Moolenaar
2010-06-21 06:15:46 +02:00
parent 191e0a2bc7
commit a8ffcbbf5d
23 changed files with 824 additions and 155 deletions
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42
src/blowfish.c
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@@ -436,13 +436,7 @@ bf_key_init(password, salt, salt_len)
key[i] = j;
}
for (i = 0; i < 256; ++i)
{
sbx[0][i] = sbi[0][i];
sbx[1][i] = sbi[1][i];
sbx[2][i] = sbi[2][i];
sbx[3][i] = sbi[3][i];
}
mch_memmove(sbx, sbi, 4 * 4 * 256);
for (i = 0; i < 18; ++i)
{
@@ -655,6 +649,40 @@ bf_crypt_init_keys(passwd)
}
}
static int save_randbyte_offset;
static int save_update_offset;
static char_u save_ofb_buffer[BF_OFB_LEN];
static UINT32_T save_pax[18];
static UINT32_T save_sbx[4][256];
/*
* Save the current crypt state. Can only be used once before
* bf_crypt_restore().
*/
void
bf_crypt_save()
{
save_randbyte_offset = randbyte_offset;
save_update_offset = update_offset;
mch_memmove(save_ofb_buffer, ofb_buffer, BF_OFB_LEN);
mch_memmove(save_pax, pax, 4 * 18);
mch_memmove(save_sbx, sbx, 4 * 4 * 256);
}
/*
* Restore the current crypt state. Can only be used after
* bf_crypt_save().
*/
void
bf_crypt_restore()
{
randbyte_offset = save_randbyte_offset;
update_offset = save_update_offset;
mch_memmove(ofb_buffer, save_ofb_buffer, BF_OFB_LEN);
mch_memmove(pax, save_pax, 4 * 18);
mch_memmove(sbx, save_sbx, 4 * 4 * 256);
}
/*
* Run a test to check if the encryption works as expected.
* Give an error and return FAIL when not.