From 0f5f4961ae53d41da5c3d3d37be796d72b38b4af Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Mon, 12 Jan 2026 11:20:24 -0800 Subject: [PATCH] crypto: ccp - 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/20260112192035.10427-27-ebiggers@kernel.org Signed-off-by: Eric Biggers --- drivers/crypto/ccp/ccp-crypto-aes-cmac.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/ccp/ccp-crypto-aes-cmac.c b/drivers/crypto/ccp/ccp-crypto-aes-cmac.c index d8426bdf31908..71480f7e6f6b6 100644 --- a/drivers/crypto/ccp/ccp-crypto-aes-cmac.c +++ b/drivers/crypto/ccp/ccp-crypto-aes-cmac.c @@ -261,7 +261,7 @@ static int ccp_aes_cmac_setkey(struct crypto_ahash *tfm, const u8 *key, ccp_crypto_ahash_alg(crypto_ahash_tfm(tfm)); u64 k0_hi, k0_lo, k1_hi, k1_lo, k2_hi, k2_lo; u64 rb_hi = 0x00, rb_lo = 0x87; - struct crypto_aes_ctx aes; + struct aes_enckey aes; __be64 *gk; int ret; @@ -284,7 +284,7 @@ static int ccp_aes_cmac_setkey(struct crypto_ahash *tfm, const u8 *key, ctx->u.aes.key_len = 0; /* Set the key for the AES cipher used to generate the keys */ - ret = aes_expandkey(&aes, key, key_len); + ret = aes_prepareenckey(&aes, key, key_len); if (ret) return ret; -- 2.47.3