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| author | Eric Biggers <ebiggers@google.com> | 2019-04-09 23:46:35 -0700 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-04-18 22:14:58 +0800 |
| commit | 694e0db6600c12f8172efb51cd4b4bbade958562 (patch) | |
| tree | 02072801a75103ecb788005f608b4333b7185241 /drivers/crypto | |
| parent | 4a8108b70508df0b6c4ffa4a3974dab93dcbe851 (diff) | |
| download | linux-694e0db6600c12f8172efb51cd4b4bbade958562.tar.gz linux-694e0db6600c12f8172efb51cd4b4bbade958562.tar.bz2 linux-694e0db6600c12f8172efb51cd4b4bbade958562.zip | |
crypto: vmx - return correct error code on failed setkey
In the VMX implementations of AES and AES modes, return -EINVAL when an
invalid key length is provided, rather than some unusual error code
determined via a series of additions. This makes the behavior match the
other AES implementations in the kernel's crypto API.
Cc: Daniel Axtens <dja@axtens.net>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/vmx/aes.c | 7 | ||||
| -rw-r--r-- | drivers/crypto/vmx/aes_cbc.c | 7 | ||||
| -rw-r--r-- | drivers/crypto/vmx/aes_ctr.c | 5 | ||||
| -rw-r--r-- | drivers/crypto/vmx/aes_xts.c | 9 |
4 files changed, 16 insertions, 12 deletions
diff --git a/drivers/crypto/vmx/aes.c b/drivers/crypto/vmx/aes.c index d7316f7a3a69..b00d6947e02f 100644 --- a/drivers/crypto/vmx/aes.c +++ b/drivers/crypto/vmx/aes.c @@ -78,13 +78,14 @@ static int p8_aes_setkey(struct crypto_tfm *tfm, const u8 *key, pagefault_disable(); enable_kernel_vsx(); ret = aes_p8_set_encrypt_key(key, keylen * 8, &ctx->enc_key); - ret += aes_p8_set_decrypt_key(key, keylen * 8, &ctx->dec_key); + ret |= aes_p8_set_decrypt_key(key, keylen * 8, &ctx->dec_key); disable_kernel_vsx(); pagefault_enable(); preempt_enable(); - ret += crypto_cipher_setkey(ctx->fallback, key, keylen); - return ret; + ret |= crypto_cipher_setkey(ctx->fallback, key, keylen); + + return ret ? -EINVAL : 0; } static void p8_aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) diff --git a/drivers/crypto/vmx/aes_cbc.c b/drivers/crypto/vmx/aes_cbc.c index c5c5ff82b52e..fbe882ef1bc5 100644 --- a/drivers/crypto/vmx/aes_cbc.c +++ b/drivers/crypto/vmx/aes_cbc.c @@ -81,13 +81,14 @@ static int p8_aes_cbc_setkey(struct crypto_tfm *tfm, const u8 *key, pagefault_disable(); enable_kernel_vsx(); ret = aes_p8_set_encrypt_key(key, keylen * 8, &ctx->enc_key); - ret += aes_p8_set_decrypt_key(key, keylen * 8, &ctx->dec_key); + ret |= aes_p8_set_decrypt_key(key, keylen * 8, &ctx->dec_key); disable_kernel_vsx(); pagefault_enable(); preempt_enable(); - ret += crypto_sync_skcipher_setkey(ctx->fallback, key, keylen); - return ret; + ret |= crypto_sync_skcipher_setkey(ctx->fallback, key, keylen); + + return ret ? -EINVAL : 0; } static int p8_aes_cbc_encrypt(struct blkcipher_desc *desc, diff --git a/drivers/crypto/vmx/aes_ctr.c b/drivers/crypto/vmx/aes_ctr.c index 8a2fe092cb8e..214c69db9ebd 100644 --- a/drivers/crypto/vmx/aes_ctr.c +++ b/drivers/crypto/vmx/aes_ctr.c @@ -83,8 +83,9 @@ static int p8_aes_ctr_setkey(struct crypto_tfm *tfm, const u8 *key, pagefault_enable(); preempt_enable(); - ret += crypto_sync_skcipher_setkey(ctx->fallback, key, keylen); - return ret; + ret |= crypto_sync_skcipher_setkey(ctx->fallback, key, keylen); + + return ret ? -EINVAL : 0; } static void p8_aes_ctr_final(struct p8_aes_ctr_ctx *ctx, diff --git a/drivers/crypto/vmx/aes_xts.c b/drivers/crypto/vmx/aes_xts.c index ecd64e5cc5bb..5bf4c3856650 100644 --- a/drivers/crypto/vmx/aes_xts.c +++ b/drivers/crypto/vmx/aes_xts.c @@ -86,14 +86,15 @@ static int p8_aes_xts_setkey(struct crypto_tfm *tfm, const u8 *key, pagefault_disable(); enable_kernel_vsx(); ret = aes_p8_set_encrypt_key(key + keylen/2, (keylen/2) * 8, &ctx->tweak_key); - ret += aes_p8_set_encrypt_key(key, (keylen/2) * 8, &ctx->enc_key); - ret += aes_p8_set_decrypt_key(key, (keylen/2) * 8, &ctx->dec_key); + ret |= aes_p8_set_encrypt_key(key, (keylen/2) * 8, &ctx->enc_key); + ret |= aes_p8_set_decrypt_key(key, (keylen/2) * 8, &ctx->dec_key); disable_kernel_vsx(); pagefault_enable(); preempt_enable(); - ret += crypto_sync_skcipher_setkey(ctx->fallback, key, keylen); - return ret; + ret |= crypto_sync_skcipher_setkey(ctx->fallback, key, keylen); + + return ret ? -EINVAL : 0; } static int p8_aes_xts_crypt(struct blkcipher_desc *desc, |