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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2019-07-02 21:41:32 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2019-07-26 14:56:06 +1000
commitc184472902d87189082e5a349051197e252ae9af (patch)
tree8ada8a68aa7cfb1593b581cc6c405db7fbbda8e5 /arch/arm64/crypto
parentf68df54307aaae01df66977511ea719158201188 (diff)
downloadlinux-c184472902d87189082e5a349051197e252ae9af.tar.bz2
crypto: arm64/aes-ce - switch to library version of key expansion routine
Switch to the new AES library that also provides an implementation of the AES key expansion routine. This removes the dependency on the generic AES cipher, allowing it to be omitted entirely in the future. While at it, remove some references to the table based arm64 version of AES and replace them with AES library calls as well. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/arm64/crypto')
-rw-r--r--arch/arm64/crypto/Kconfig2
-rw-r--r--arch/arm64/crypto/aes-glue.c17
2 files changed, 11 insertions, 8 deletions
diff --git a/arch/arm64/crypto/Kconfig b/arch/arm64/crypto/Kconfig
index 17bf5dc10aad..66dea518221c 100644
--- a/arch/arm64/crypto/Kconfig
+++ b/arch/arm64/crypto/Kconfig
@@ -96,7 +96,7 @@ config CRYPTO_AES_ARM64_NEON_BLK
depends on KERNEL_MODE_NEON
select CRYPTO_BLKCIPHER
select CRYPTO_AES_ARM64
- select CRYPTO_AES
+ select CRYPTO_LIB_AES
select CRYPTO_SIMD
config CRYPTO_CHACHA20_NEON
diff --git a/arch/arm64/crypto/aes-glue.c b/arch/arm64/crypto/aes-glue.c
index 8d6c8932c841..843fb27c4961 100644
--- a/arch/arm64/crypto/aes-glue.c
+++ b/arch/arm64/crypto/aes-glue.c
@@ -23,7 +23,6 @@
#ifdef USE_V8_CRYPTO_EXTENSIONS
#define MODE "ce"
#define PRIO 300
-#define aes_setkey ce_aes_setkey
#define aes_expandkey ce_aes_expandkey
#define aes_ecb_encrypt ce_aes_ecb_encrypt
#define aes_ecb_decrypt ce_aes_ecb_decrypt
@@ -39,8 +38,6 @@ MODULE_DESCRIPTION("AES-ECB/CBC/CTR/XTS using ARMv8 Crypto Extensions");
#else
#define MODE "neon"
#define PRIO 200
-#define aes_setkey crypto_aes_set_key
-#define aes_expandkey crypto_aes_expand_key
#define aes_ecb_encrypt neon_aes_ecb_encrypt
#define aes_ecb_decrypt neon_aes_ecb_decrypt
#define aes_cbc_encrypt neon_aes_cbc_encrypt
@@ -118,7 +115,14 @@ struct mac_desc_ctx {
static int skcipher_aes_setkey(struct crypto_skcipher *tfm, const u8 *in_key,
unsigned int key_len)
{
- return aes_setkey(crypto_skcipher_tfm(tfm), in_key, key_len);
+ struct crypto_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
+ int ret;
+
+ ret = aes_expandkey(ctx, in_key, key_len);
+ if (ret)
+ crypto_skcipher_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
+
+ return ret;
}
static int xts_set_key(struct crypto_skcipher *tfm, const u8 *in_key,
@@ -646,15 +650,14 @@ static void mac_do_update(struct crypto_aes_ctx *ctx, u8 const in[], int blocks,
kernel_neon_end();
} else {
if (enc_before)
- __aes_arm64_encrypt(ctx->key_enc, dg, dg, rounds);
+ aes_encrypt(ctx, dg, dg);
while (blocks--) {
crypto_xor(dg, in, AES_BLOCK_SIZE);
in += AES_BLOCK_SIZE;
if (blocks || enc_after)
- __aes_arm64_encrypt(ctx->key_enc, dg, dg,
- rounds);
+ aes_encrypt(ctx, dg, dg);
}
}
}