linux-imx

    struct omap_des_ctx *ctx = crypto_ablkcipher_ctx(cipher);

    struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);

​

    if (keylen != DES_KEY_SIZE && keylen != (3*DES_KEY_SIZE))

        return -EINVAL;

​

    pr_debug("enter, keylen: %d\n", keylen);

​

    /* Do we need to test against weak key? */

        u32 tmp[DES_EXPKEY_WORDS];

        int ret = des_ekey(tmp, key);

​

        if (!ret) {

            tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY;

            return -EINVAL;

        }

    }

​

    memcpy(ctx->key, key, keylen);