Commit 239e27a9 authored by Sagar Vashnav's avatar Sagar Vashnav Committed by Herbert Xu
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crypto: lib/aesgcm - Add kernel docs for aesgcm_mac 



Add kernel documentation for the aesgcm_mac.
This function generates the authentication tag using the AES-GCM algorithm.

Signed-off-by: default avatarSagar Vashnav <sagarvashnav72427@gmail.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 03f8f3cb

lib/crypto/aesgcm.c

+13 −0
Original line number Diff line number Diff line
@@ -73,6 +73,19 @@ static void aesgcm_ghash(be128 *ghash, const be128 *key, const void *src, 
	}

}



/**

 * aesgcm_mac - Generates the authentication tag using AES-GCM algorithm.

 * @ctx: The data structure that will hold the AES-GCM key schedule

 * @src: The input source data.

 * @src_len: Length of the source data.

 * @assoc: Points to the associated data.

 * @assoc_len: Length of the associated data values.

 * @ctr: Points to the counter value.

 * @authtag: The output buffer for the authentication tag.

 *

 * It takes in the AES-GCM context, source data, associated data, counter value,

 * and an output buffer for the authentication tag.

 */

static void aesgcm_mac(const struct aesgcm_ctx *ctx, const u8 *src, int src_len,

		       const u8 *assoc, int assoc_len, __be32 *ctr, u8 *authtag)

{