On Tue, May 19, 2015 at 02:59:29PM +0800, Herbert Xu wrote: > On Mon, May 18, 2015 at 11:58:12PM -0700, Jaegeuk Kim wrote: > > > > > So where does the key get generated? The crypto tfm should be > > > allocated when you generate the key. > > > > In fs/ext4/crypto.c, > > > > - writepage > > - ext4_encrypt > > - ext4_get_crypto_ctx > > - crypto_alloc_ablkcipher > > - ext4_page_crypto > > - crypto_ablkcipher_setkey > > - ablkcipher_request_alloc(GFP_NOFS) > > - ablkcipher_request_set_crypt(PAGE_CACHE_SIZE) > > - crypto_ablkcipher_encrypt > > > > - end_io > > - crypto_free_tfm > > No that's where you set the key, not where you generate the key. The key generation is done by ext4_generate_encryption_key in fs/ext4/crypto_key.c. And, ext4_file_mmap and ext4_file_open trigger it. > -- > Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> > Home Page: http://gondor.apana.org.au/~herbert/ > PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
