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Re: [PATCH 1/4] xen/lib: Export additional sha256 functions
- To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Frediano Ziglio <frediano.ziglio@xxxxxxxxx>, Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Mon, 12 May 2025 12:30:28 +0200
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- Cc: Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Julien Grall <julien@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Mon, 12 May 2025 10:30:37 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 06.05.2025 16:05, Andrew Cooper wrote:
> On 06/05/2025 2:56 pm, Frediano Ziglio wrote:
>> diff --git a/xen/include/xen/sha2.h b/xen/include/xen/sha2.h
>> index 47d97fbf01..ea8bad67e4 100644
>> --- a/xen/include/xen/sha2.h
>> +++ b/xen/include/xen/sha2.h
>> @@ -9,6 +9,16 @@
>>
>> #define SHA2_256_DIGEST_SIZE 32
>>
>> +struct sha2_256_state {
>> + uint32_t state[SHA2_256_DIGEST_SIZE / sizeof(uint32_t)];
>> + uint8_t buf[64];
>> + size_t count; /* Byte count. */
>> +};
>> +
>> +void sha2_256_init(struct sha2_256_state *s);
>> +void sha2_256_update(struct sha2_256_state *s, const void *msg,
>> + size_t len);
>> +void sha2_256_final(struct sha2_256_state *s, void *_dst);
>> void sha2_256_digest(uint8_t digest[SHA2_256_DIGEST_SIZE],
>> const void *msg, size_t len);
>
> sha2_256_digest() is unlike the others as it holds sha2_256_state
> internally. I'd suggest having all of the additions below this point,
> which group them more nicely.
>
> Can fix on commit. Otherwise LGTM.
I notice this was committed, but isn't this introducing new Misra
violations (extern functions without external callers)?
Jan
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