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crypto: inside-secure - Add support for the ofb(sm4) skcipher

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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>
This commit is contained in:
Pascal van Leeuwen 2019-09-13 11:10:38 +02:00 committed by Herbert Xu
parent 6f2d14288e
commit 03a6cfb97f
3 changed files with 38 additions and 0 deletions
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1
drivers/crypto/inside-secure/safexcel.c
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@ -1180,6 +1180,7 @@ static struct safexcel_alg_template *safexcel_algs[] = {
&safexcel_alg_hmac_sm3, &safexcel_alg_hmac_sm3,
&safexcel_alg_ecb_sm4, &safexcel_alg_ecb_sm4,
&safexcel_alg_cbc_sm4, &safexcel_alg_cbc_sm4,
&safexcel_alg_ofb_sm4,
}; };
static int safexcel_register_algorithms(struct safexcel_crypto_priv *priv) static int safexcel_register_algorithms(struct safexcel_crypto_priv *priv)

1
drivers/crypto/inside-secure/safexcel.h
View File

@ -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_hmac_sm3;
extern struct safexcel_alg_template safexcel_alg_ecb_sm4; 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_cbc_sm4;
extern struct safexcel_alg_template safexcel_alg_ofb_sm4;
#endif #endif

36
drivers/crypto/inside-secure/safexcel_cipher.c
View File

@ -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,
},
},
};