From 60fb28ca028634210e12a4e674d3563f741e617c Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Mon, 12 Jan 2026 11:20:20 -0800 Subject: [PATCH] staging: rtl8723bs: core: Use new AES library API Switch from the old AES library functions (which use struct crypto_aes_ctx) to the new ones (which use struct aes_enckey). This eliminates the unnecessary computation and caching of the decryption round keys. The new AES en/decryption functions are also much faster and use AES instructions when supported by the CPU. Note that in addition to the change in the key preparation function and the key struct type itself, the change in the type of the key struct results in aes_encrypt() (which is temporarily a type-generic macro) calling the new encryption function rather than the old one. Acked-by: Ard Biesheuvel Link: https://lore.kernel.org/r/20260112192035.10427-23-ebiggers@kernel.org Signed-off-by: Eric Biggers --- drivers/staging/rtl8723bs/core/rtw_security.c | 20 +++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/staging/rtl8723bs/core/rtw_security.c b/drivers/staging/rtl8723bs/core/rtw_security.c index 2f941ffbd4651..8ee5bed252bf7 100644 --- a/drivers/staging/rtl8723bs/core/rtw_security.c +++ b/drivers/staging/rtl8723bs/core/rtw_security.c @@ -637,11 +637,11 @@ exit: /****************************************/ static void aes128k128d(u8 *key, u8 *data, u8 *ciphertext) { - struct crypto_aes_ctx ctx; + struct aes_enckey aes; - aes_expandkey(&ctx, key, 16); - aes_encrypt(&ctx, ciphertext, data); - memzero_explicit(&ctx, sizeof(ctx)); + aes_prepareenckey(&aes, key, 16); + aes_encrypt(&aes, ciphertext, data); + memzero_explicit(&aes, sizeof(aes)); } /************************************************/ @@ -1406,13 +1406,13 @@ static void gf_mulx(u8 *pad) static int omac1_aes_128_vector(u8 *key, size_t num_elem, u8 *addr[], size_t *len, u8 *mac) { - struct crypto_aes_ctx ctx; + struct aes_enckey aes; u8 cbc[AES_BLOCK_SIZE], pad[AES_BLOCK_SIZE]; u8 *pos, *end; size_t i, e, left, total_len; int ret; - ret = aes_expandkey(&ctx, key, 16); + ret = aes_prepareenckey(&aes, key, 16); if (ret) return -1; memset(cbc, 0, AES_BLOCK_SIZE); @@ -1436,12 +1436,12 @@ static int omac1_aes_128_vector(u8 *key, size_t num_elem, } } if (left > AES_BLOCK_SIZE) - aes_encrypt(&ctx, cbc, cbc); + aes_encrypt(&aes, cbc, cbc); left -= AES_BLOCK_SIZE; } memset(pad, 0, AES_BLOCK_SIZE); - aes_encrypt(&ctx, pad, pad); + aes_encrypt(&aes, pad, pad); gf_mulx(pad); if (left || total_len == 0) { @@ -1459,8 +1459,8 @@ static int omac1_aes_128_vector(u8 *key, size_t num_elem, for (i = 0; i < AES_BLOCK_SIZE; i++) pad[i] ^= cbc[i]; - aes_encrypt(&ctx, pad, mac); - memzero_explicit(&ctx, sizeof(ctx)); + aes_encrypt(&aes, pad, mac); + memzero_explicit(&aes, sizeof(aes)); return 0; } -- 2.47.3