diff options
Diffstat (limited to 'crypto/akcipher.c')
| -rw-r--r-- | crypto/akcipher.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/crypto/akcipher.c b/crypto/akcipher.c index 8ffd31c44cf6..e9b6ddcdf124 100644 --- a/crypto/akcipher.c +++ b/crypto/akcipher.c @@ -192,12 +192,17 @@ EXPORT_SYMBOL_GPL(akcipher_register_instance); int crypto_akcipher_sync_prep(struct crypto_akcipher_sync_data *data) { unsigned int reqsize = crypto_akcipher_reqsize(data->tfm); - unsigned int mlen = max(data->slen, data->dlen); struct akcipher_request *req; struct scatterlist *sg; + unsigned int mlen; unsigned int len; u8 *buf; + if (data->dst) + mlen = max(data->slen, data->dlen); + else + mlen = data->slen + data->dlen; + len = sizeof(*req) + reqsize + mlen; if (len < mlen) return -EOVERFLOW; @@ -213,9 +218,10 @@ int crypto_akcipher_sync_prep(struct crypto_akcipher_sync_data *data) data->buf = buf; memcpy(buf, data->src, data->slen); - sg = data->sg; + sg = &data->sg; sg_init_one(sg, buf, mlen); - akcipher_request_set_crypt(req, sg, sg, data->slen, data->dlen); + akcipher_request_set_crypt(req, sg, data->dst ? sg : NULL, + data->slen, data->dlen); crypto_init_wait(&data->cwait); akcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_SLEEP, |