Source of atmel-tdes.c - linux-imx - PHYTEC BitBucket (Stash)

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    struct crypto_tfm *ctfm = crypto_ablkcipher_tfm(tfm);
​
    struct atmel_tdes_ctx *ctx = crypto_ablkcipher_ctx(tfm);
​
    if (keylen != DES_KEY_SIZE) {
        crypto_ablkcipher_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
        return -EINVAL;
    }
​
    err = des_ekey(tmp, key);
    if (err == 0 && (ctfm->crt_flags & CRYPTO_TFM_REQ_WEAK_KEY)) {
    if (err == 0 && (ctfm->crt_flags & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)) {
        ctfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY;
        return -EINVAL;
    }
​
    memcpy(ctx->key, key, keylen);
    ctx->keylen = keylen;
​
    return 0;
}
​