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| author | Pascal van Leeuwen <pascalvanl@gmail.com> | 2019-09-13 11:10:38 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-10-04 17:06:04 +0200 |
| commit | 03a6cfb97f8f28373a6fed68deefccb5e98e1072 (patch) | |
| tree | 9ca4886d1d370f12847a582086fc811bd22c8803 | |
| parent | crypto: inside-secure - Add support for the cbc(sm4) skcipher (diff) | |
| download | linux-03a6cfb97f8f28373a6fed68deefccb5e98e1072.tar.xz linux-03a6cfb97f8f28373a6fed68deefccb5e98e1072.zip | |
crypto: inside-secure - Add support for the ofb(sm4) skcipher
This patch adds support for SM4 in OFB mode, i.e. skcipher ofb(sm4).
changes since v1:
- nothing
Signed-off-by: Pascal van Leeuwen <pvanleeuwen@verimatrix.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | drivers/crypto/inside-secure/safexcel.c | 1 | ||||
| -rw-r--r-- | drivers/crypto/inside-secure/safexcel.h | 1 | ||||
| -rw-r--r-- | drivers/crypto/inside-secure/safexcel_cipher.c | 36 |
3 files changed, 38 insertions, 0 deletions
diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c index ac1d5b89cd8d..e3873f2db7d3 100644 --- a/drivers/crypto/inside-secure/safexcel.c +++ b/drivers/crypto/inside-secure/safexcel.c @@ -1180,6 +1180,7 @@ static struct safexcel_alg_template *safexcel_algs[] = { &safexcel_alg_hmac_sm3, &safexcel_alg_ecb_sm4, &safexcel_alg_cbc_sm4, + &safexcel_alg_ofb_sm4, }; static int safexcel_register_algorithms(struct safexcel_crypto_priv *priv) diff --git a/drivers/crypto/inside-secure/safexcel.h b/drivers/crypto/inside-secure/safexcel.h index 7c63590f4e5d..765f5e8706bd 100644 --- a/drivers/crypto/inside-secure/safexcel.h +++ b/drivers/crypto/inside-secure/safexcel.h @@ -881,5 +881,6 @@ extern struct safexcel_alg_template safexcel_alg_sm3; extern struct safexcel_alg_template safexcel_alg_hmac_sm3; extern struct safexcel_alg_template safexcel_alg_ecb_sm4; extern struct safexcel_alg_template safexcel_alg_cbc_sm4; +extern struct safexcel_alg_template safexcel_alg_ofb_sm4; #endif diff --git a/drivers/crypto/inside-secure/safexcel_cipher.c b/drivers/crypto/inside-secure/safexcel_cipher.c index f5d39e1a74e7..b0e4bfb2e518 100644 --- a/drivers/crypto/inside-secure/safexcel_cipher.c +++ b/drivers/crypto/inside-secure/safexcel_cipher.c @@ -2743,3 +2743,39 @@ struct safexcel_alg_template safexcel_alg_cbc_sm4 = { }, }, }; + +static int safexcel_skcipher_sm4_ofb_cra_init(struct crypto_tfm *tfm) +{ + struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); + + safexcel_skcipher_cra_init(tfm); + ctx->alg = SAFEXCEL_SM4; + ctx->mode = CONTEXT_CONTROL_CRYPTO_MODE_OFB; + return 0; +} + +struct safexcel_alg_template safexcel_alg_ofb_sm4 = { + .type = SAFEXCEL_ALG_TYPE_SKCIPHER, + .algo_mask = SAFEXCEL_ALG_SM4 | SAFEXCEL_ALG_AES_XFB, + .alg.skcipher = { + .setkey = safexcel_skcipher_sm4_setkey, + .encrypt = safexcel_encrypt, + .decrypt = safexcel_decrypt, + .min_keysize = SM4_KEY_SIZE, + .max_keysize = SM4_KEY_SIZE, + .ivsize = SM4_BLOCK_SIZE, + .base = { + .cra_name = "ofb(sm4)", + .cra_driver_name = "safexcel-ofb-sm4", + .cra_priority = SAFEXCEL_CRA_PRIORITY, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_KERN_DRIVER_ONLY, + .cra_blocksize = 1, + .cra_ctxsize = sizeof(struct safexcel_cipher_ctx), + .cra_alignmask = 0, + .cra_init = safexcel_skcipher_sm4_ofb_cra_init, + .cra_exit = safexcel_skcipher_cra_exit, + .cra_module = THIS_MODULE, + }, + }, +}; |