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| author |   Christian Lamparter <chunkeey@gmail.com> | 2018-04-19 18:41:54 +0200 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2018-04-28 16:09:43 +0800 |
| commit | 98e87e3d933b8e504ea41b8857c038d2cd06cddc (patch) | |
| tree | 49f9dea288fa426f43118b11da4b1beee71bdcca /drivers/crypto/amcc/crypto4xx_core.h | |
| parent | crypto: crypto4xx - avoid VLA use (diff) | |
| download | linux-dev-98e87e3d933b8e504ea41b8857c038d2cd06cddc.tar.xz linux-dev-98e87e3d933b8e504ea41b8857c038d2cd06cddc.zip | |
crypto: crypto4xx - add aes-ctr support
This patch adds support for the aes-ctr skcipher.
name : ctr(aes)
driver : ctr-aes-ppc4xx
module : crypto4xx
priority : 300
refcnt : 1
selftest : passed
internal : no
type : skcipher
async : yes
blocksize : 16
min keysize : 16
max keysize : 32
ivsize : 16
chunksize : 16
walksize : 16
The hardware uses only the last 32-bits as the counter while the
kernel tests (aes_ctr_enc_tv_template[4] for example) expect that
the whole IV is a counter. To make this work, the driver will
fallback if the counter is going to overlow.
The aead's crypto4xx_setup_fallback() function is renamed to
crypto4xx_aead_setup_fallback.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to '')
| -rw-r--r-- | drivers/crypto/amcc/crypto4xx_core.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/crypto/amcc/crypto4xx_core.h b/drivers/crypto/amcc/crypto4xx_core.h index 863cc558bc29..279f650c4f1c 100644 --- a/drivers/crypto/amcc/crypto4xx_core.h +++ b/drivers/crypto/amcc/crypto4xx_core.h @@ -128,6 +128,7 @@ struct crypto4xx_ctx { __le32 iv_nonce; u32 sa_len; union { + struct crypto_skcipher *cipher; struct crypto_aead *aead; } sw_cipher; }; @@ -163,12 +164,16 @@ int crypto4xx_setkey_aes_cbc(struct crypto_skcipher *cipher, const u8 *key, unsigned int keylen); int crypto4xx_setkey_aes_cfb(struct crypto_skcipher *cipher, const u8 *key, unsigned int keylen); +int crypto4xx_setkey_aes_ctr(struct crypto_skcipher *cipher, + const u8 *key, unsigned int keylen); int crypto4xx_setkey_aes_ecb(struct crypto_skcipher *cipher, const u8 *key, unsigned int keylen); int crypto4xx_setkey_aes_ofb(struct crypto_skcipher *cipher, const u8 *key, unsigned int keylen); int crypto4xx_setkey_rfc3686(struct crypto_skcipher *cipher, const u8 *key, unsigned int keylen); +int crypto4xx_encrypt_ctr(struct skcipher_request *req); +int crypto4xx_decrypt_ctr(struct skcipher_request *req); int crypto4xx_encrypt_iv(struct skcipher_request *req); int crypto4xx_decrypt_iv(struct skcipher_request *req); int crypto4xx_encrypt_noiv(struct skcipher_request *req); |