linux-imx

{

    struct des_ctx *dctx = crypto_tfm_ctx(tfm);

    u32 *flags = &tfm->crt_flags;

    u32 tmp[DES_EXPKEY_WORDS];

    int ret;

​

    /* Expand to tmp */

    ret = des_ekey(tmp, key);

​

        *flags |= CRYPTO_TFM_RES_WEAK_KEY;

        return -EINVAL;

    }

​

    /* Copy to output */

    memcpy(dctx->expkey, tmp, sizeof(dctx->expkey));

​

    return 0;

}

​

 *

 */

int __des3_ede_setkey(u32 *expkey, u32 *flags, const u8 *key,

              unsigned int keylen)

{

    const u32 *K = (const u32 *)key;

​

    if (unlikely(!((K[0] ^ K[2]) | (K[1] ^ K[3])) ||

             !((K[2] ^ K[4]) | (K[3] ^ K[5]))) &&

        *flags |= CRYPTO_TFM_RES_WEAK_KEY;

        return -EINVAL;

    }

​

    des_ekey(expkey, key); expkey += DES_EXPKEY_WORDS; key += DES_KEY_SIZE;

    dkey(expkey, key); expkey += DES_EXPKEY_WORDS; key += DES_KEY_SIZE;

    des_ekey(expkey, key);

​

    return 0;

}