lkml.org 
[lkml]   [2018]   [Dec]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2 5/7] efi: Import certificates from UEFI Secure Boot
On Sun, 9 Dec 2018, Nayna Jain wrote:

> +/*
> + * Blacklist an X509 TBS hash.
> + */
> +static __init void uefi_blacklist_x509_tbs(const char *source,
> + const void *data, size_t len)
> +{
> + char *hash, *p;
> +
> + hash = kmalloc(4 + len * 2 + 1, GFP_KERNEL);
> + if (!hash)
> + return;
> + p = memcpy(hash, "tbs:", 4);
> + p += 4;
> + bin2hex(p, data, len);
> + p += len * 2;
> + *p = 0;
> +
> + mark_hash_blacklisted(hash);
> + kfree(hash);
> +}
> +
> +/*
> + * Blacklist the hash of an executable.
> + */
> +static __init void uefi_blacklist_binary(const char *source,
> + const void *data, size_t len)
> +{
> + char *hash, *p;
> +
> + hash = kmalloc(4 + len * 2 + 1, GFP_KERNEL);
> + if (!hash)
> + return;
> + p = memcpy(hash, "bin:", 4);
> + p += 4;
> + bin2hex(p, data, len);
> + p += len * 2;
> + *p = 0;
> +
> + mark_hash_blacklisted(hash);
> + kfree(hash);
> +}
>

These could be refactored into one function.


--
James Morris
<jmorris@namei.org>

\
 
 \ /
  Last update: 2018-12-11 19:49    [W:0.157 / U:0.744 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site