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BCH: Add configurable AES encryption support to block-to-character (BCH) driver. This allows any block device to be accessed as an encrypted character device. From Max Nekludov

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This commit is contained in:
Gregory Nutt
2014-07-07 08:00:00 -06:00
parent edba505fc2
commit dc7bcb0c1d
5 changed files with 106 additions and 3 deletions
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drivers/bch/bchdev_driver.c
+9 -1
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@@ -1,7 +1,7 @@
/****************************************************************************
* drivers/bch/bchdev_driver.c
*
* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
* Copyright (C) 2008-2009, 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@@ -186,6 +186,7 @@ static ssize_t bch_read(FAR struct file *filep, FAR char *buffer, size_t len)
{
filep->f_pos += len;
}
bchlib_semgive(bch);
return ret;
}
@@ -249,6 +250,13 @@ static int bch_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
}
bchlib_semgive(bch);
}
#if defined(CONFIG_BCH_ENCRYPTION)
else if (cmd == DIOC_SETKEY)
{
memcpy(bch->key, (void*)arg, CONFIG_BCH_ENCRYPTION_KEY_SIZE);
ret = OK;
}
#endif
return ret;
}