From 320406cb60b6408d87f6a5bc729285fc44107352 Mon Sep 17 00:00:00 2001 From: Peter Harliman Liem Date: Tue, 13 Sep 2022 16:03:48 +0800 Subject: crypto: inside-secure - Replace generic aes with libaes Commit 363a90c2d517 ("crypto: safexcel/aes - switch to library version of key expansion routine") removed CRYPTO_AES in the config. However, some portions of codes still rely on generic AES cipher (e.g. refer to safexcel_aead_gcm_cra_init(), safexcel_xcbcmac_cra_init()). This causes transform allocation failure for those algos, if CRYPTO_AES is not manually enabled. To resolve that, we replace all existing AES cipher dependent codes with their AES library counterpart. Fixes: 363a90c2d517 ("crypto: safexcel/aes - switch to library version of key expansion routine") Signed-off-by: Peter Harliman Liem Signed-off-by: Herbert Xu --- drivers/crypto/inside-secure/safexcel_hash.c | 59 +++++++++------------------- 1 file changed, 19 insertions(+), 40 deletions(-) (limited to 'drivers/crypto/inside-secure/safexcel_hash.c') diff --git a/drivers/crypto/inside-secure/safexcel_hash.c b/drivers/crypto/inside-secure/safexcel_hash.c index 2124416742f8..103fc551d2af 100644 --- a/drivers/crypto/inside-secure/safexcel_hash.c +++ b/drivers/crypto/inside-secure/safexcel_hash.c @@ -30,7 +30,7 @@ struct safexcel_ahash_ctx { bool fb_init_done; bool fb_do_setkey; - struct crypto_cipher *kaes; + struct crypto_aes_ctx *aes; struct crypto_ahash *fback; struct crypto_shash *shpre; struct shash_desc *shdesc; @@ -824,7 +824,7 @@ static int safexcel_ahash_final(struct ahash_request *areq) result[i] = swab32(ctx->base.ipad.word[i + 4]); } areq->result[0] ^= 0x80; // 10- padding - crypto_cipher_encrypt_one(ctx->kaes, areq->result, areq->result); + aes_encrypt(ctx->aes, areq->result, areq->result); return 0; } else if (unlikely(req->hmac && (req->len == req->block_sz) && @@ -2083,37 +2083,26 @@ static int safexcel_xcbcmac_setkey(struct crypto_ahash *tfm, const u8 *key, unsigned int len) { struct safexcel_ahash_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm)); - struct crypto_aes_ctx aes; u32 key_tmp[3 * AES_BLOCK_SIZE / sizeof(u32)]; int ret, i; - ret = aes_expandkey(&aes, key, len); + ret = aes_expandkey(ctx->aes, key, len); if (ret) return ret; /* precompute the XCBC key material */ - crypto_cipher_clear_flags(ctx->kaes, CRYPTO_TFM_REQ_MASK); - crypto_cipher_set_flags(ctx->kaes, crypto_ahash_get_flags(tfm) & - CRYPTO_TFM_REQ_MASK); - ret = crypto_cipher_setkey(ctx->kaes, key, len); - if (ret) - return ret; - - crypto_cipher_encrypt_one(ctx->kaes, (u8 *)key_tmp + 2 * AES_BLOCK_SIZE, - "\x1\x1\x1\x1\x1\x1\x1\x1\x1\x1\x1\x1\x1\x1\x1\x1"); - crypto_cipher_encrypt_one(ctx->kaes, (u8 *)key_tmp, - "\x2\x2\x2\x2\x2\x2\x2\x2\x2\x2\x2\x2\x2\x2\x2\x2"); - crypto_cipher_encrypt_one(ctx->kaes, (u8 *)key_tmp + AES_BLOCK_SIZE, - "\x3\x3\x3\x3\x3\x3\x3\x3\x3\x3\x3\x3\x3\x3\x3\x3"); + aes_encrypt(ctx->aes, (u8 *)key_tmp + 2 * AES_BLOCK_SIZE, + "\x1\x1\x1\x1\x1\x1\x1\x1\x1\x1\x1\x1\x1\x1\x1\x1"); + aes_encrypt(ctx->aes, (u8 *)key_tmp, + "\x2\x2\x2\x2\x2\x2\x2\x2\x2\x2\x2\x2\x2\x2\x2\x2"); + aes_encrypt(ctx->aes, (u8 *)key_tmp + AES_BLOCK_SIZE, + "\x3\x3\x3\x3\x3\x3\x3\x3\x3\x3\x3\x3\x3\x3\x3\x3"); for (i = 0; i < 3 * AES_BLOCK_SIZE / sizeof(u32); i++) ctx->base.ipad.word[i] = swab32(key_tmp[i]); - crypto_cipher_clear_flags(ctx->kaes, CRYPTO_TFM_REQ_MASK); - crypto_cipher_set_flags(ctx->kaes, crypto_ahash_get_flags(tfm) & - CRYPTO_TFM_REQ_MASK); - ret = crypto_cipher_setkey(ctx->kaes, - (u8 *)key_tmp + 2 * AES_BLOCK_SIZE, - AES_MIN_KEY_SIZE); + ret = aes_expandkey(ctx->aes, + (u8 *)key_tmp + 2 * AES_BLOCK_SIZE, + AES_MIN_KEY_SIZE); if (ret) return ret; @@ -2121,7 +2110,6 @@ static int safexcel_xcbcmac_setkey(struct crypto_ahash *tfm, const u8 *key, ctx->key_sz = AES_MIN_KEY_SIZE + 2 * AES_BLOCK_SIZE; ctx->cbcmac = false; - memzero_explicit(&aes, sizeof(aes)); return 0; } @@ -2130,15 +2118,15 @@ static int safexcel_xcbcmac_cra_init(struct crypto_tfm *tfm) struct safexcel_ahash_ctx *ctx = crypto_tfm_ctx(tfm); safexcel_ahash_cra_init(tfm); - ctx->kaes = crypto_alloc_cipher("aes", 0, 0); - return PTR_ERR_OR_ZERO(ctx->kaes); + ctx->aes = kmalloc(sizeof(*ctx->aes), GFP_KERNEL); + return PTR_ERR_OR_ZERO(ctx->aes); } static void safexcel_xcbcmac_cra_exit(struct crypto_tfm *tfm) { struct safexcel_ahash_ctx *ctx = crypto_tfm_ctx(tfm); - crypto_free_cipher(ctx->kaes); + kfree(ctx->aes); safexcel_ahash_cra_exit(tfm); } @@ -2178,31 +2166,23 @@ static int safexcel_cmac_setkey(struct crypto_ahash *tfm, const u8 *key, unsigned int len) { struct safexcel_ahash_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm)); - struct crypto_aes_ctx aes; __be64 consts[4]; u64 _const[2]; u8 msb_mask, gfmask; int ret, i; - ret = aes_expandkey(&aes, key, len); + /* precompute the CMAC key material */ + ret = aes_expandkey(ctx->aes, key, len); if (ret) return ret; for (i = 0; i < len / sizeof(u32); i++) - ctx->base.ipad.word[i + 8] = swab32(aes.key_enc[i]); - - /* precompute the CMAC key material */ - crypto_cipher_clear_flags(ctx->kaes, CRYPTO_TFM_REQ_MASK); - crypto_cipher_set_flags(ctx->kaes, crypto_ahash_get_flags(tfm) & - CRYPTO_TFM_REQ_MASK); - ret = crypto_cipher_setkey(ctx->kaes, key, len); - if (ret) - return ret; + ctx->base.ipad.word[i + 8] = swab32(ctx->aes->key_enc[i]); /* code below borrowed from crypto/cmac.c */ /* encrypt the zero block */ memset(consts, 0, AES_BLOCK_SIZE); - crypto_cipher_encrypt_one(ctx->kaes, (u8 *)consts, (u8 *)consts); + aes_encrypt(ctx->aes, (u8 *)consts, (u8 *)consts); gfmask = 0x87; _const[0] = be64_to_cpu(consts[1]); @@ -2234,7 +2214,6 @@ static int safexcel_cmac_setkey(struct crypto_ahash *tfm, const u8 *key, } ctx->cbcmac = false; - memzero_explicit(&aes, sizeof(aes)); return 0; } -- cgit v1.2.3-59-g8ed1b