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647 lines
18 KiB
647 lines
18 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* ESSIV skcipher and aead template for block encryption |
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* |
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* This template encapsulates the ESSIV IV generation algorithm used by |
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* dm-crypt and fscrypt, which converts the initial vector for the skcipher |
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* used for block encryption, by encrypting it using the hash of the |
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* skcipher key as encryption key. Usually, the input IV is a 64-bit sector |
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* number in LE representation zero-padded to the size of the IV, but this |
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* is not assumed by this driver. |
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* |
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* The typical use of this template is to instantiate the skcipher |
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* 'essiv(cbc(aes),sha256)', which is the only instantiation used by |
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* fscrypt, and the most relevant one for dm-crypt. However, dm-crypt |
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* also permits ESSIV to be used in combination with the authenc template, |
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* e.g., 'essiv(authenc(hmac(sha256),cbc(aes)),sha256)', in which case |
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* we need to instantiate an aead that accepts the same special key format |
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* as the authenc template, and deals with the way the encrypted IV is |
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* embedded into the AAD area of the aead request. This means the AEAD |
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* flavor produced by this template is tightly coupled to the way dm-crypt |
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* happens to use it. |
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* |
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* Copyright (c) 2019 Linaro, Ltd. <[email protected]> |
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* |
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* Heavily based on: |
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* adiantum length-preserving encryption mode |
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* |
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* Copyright 2018 Google LLC |
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*/ |
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|
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#include <crypto/authenc.h> |
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#include <crypto/internal/aead.h> |
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#include <crypto/internal/cipher.h> |
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#include <crypto/internal/hash.h> |
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#include <crypto/internal/skcipher.h> |
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#include <crypto/scatterwalk.h> |
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#include <linux/module.h> |
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|
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#include "internal.h" |
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|
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struct essiv_instance_ctx { |
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union { |
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struct crypto_skcipher_spawn skcipher_spawn; |
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struct crypto_aead_spawn aead_spawn; |
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} u; |
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char essiv_cipher_name[CRYPTO_MAX_ALG_NAME]; |
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char shash_driver_name[CRYPTO_MAX_ALG_NAME]; |
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}; |
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|
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struct essiv_tfm_ctx { |
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union { |
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struct crypto_skcipher *skcipher; |
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struct crypto_aead *aead; |
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} u; |
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struct crypto_cipher *essiv_cipher; |
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struct crypto_shash *hash; |
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int ivoffset; |
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}; |
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struct essiv_aead_request_ctx { |
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struct scatterlist sg[4]; |
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u8 *assoc; |
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struct aead_request aead_req; |
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}; |
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|
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static int essiv_skcipher_setkey(struct crypto_skcipher *tfm, |
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const u8 *key, unsigned int keylen) |
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{ |
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struct essiv_tfm_ctx *tctx = crypto_skcipher_ctx(tfm); |
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u8 salt[HASH_MAX_DIGESTSIZE]; |
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int err; |
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crypto_skcipher_clear_flags(tctx->u.skcipher, CRYPTO_TFM_REQ_MASK); |
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crypto_skcipher_set_flags(tctx->u.skcipher, |
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crypto_skcipher_get_flags(tfm) & |
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CRYPTO_TFM_REQ_MASK); |
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err = crypto_skcipher_setkey(tctx->u.skcipher, key, keylen); |
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if (err) |
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return err; |
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err = crypto_shash_tfm_digest(tctx->hash, key, keylen, salt); |
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if (err) |
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return err; |
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crypto_cipher_clear_flags(tctx->essiv_cipher, CRYPTO_TFM_REQ_MASK); |
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crypto_cipher_set_flags(tctx->essiv_cipher, |
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crypto_skcipher_get_flags(tfm) & |
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CRYPTO_TFM_REQ_MASK); |
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return crypto_cipher_setkey(tctx->essiv_cipher, salt, |
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crypto_shash_digestsize(tctx->hash)); |
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} |
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static int essiv_aead_setkey(struct crypto_aead *tfm, const u8 *key, |
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unsigned int keylen) |
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{ |
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struct essiv_tfm_ctx *tctx = crypto_aead_ctx(tfm); |
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SHASH_DESC_ON_STACK(desc, tctx->hash); |
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struct crypto_authenc_keys keys; |
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u8 salt[HASH_MAX_DIGESTSIZE]; |
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int err; |
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crypto_aead_clear_flags(tctx->u.aead, CRYPTO_TFM_REQ_MASK); |
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crypto_aead_set_flags(tctx->u.aead, crypto_aead_get_flags(tfm) & |
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CRYPTO_TFM_REQ_MASK); |
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err = crypto_aead_setkey(tctx->u.aead, key, keylen); |
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if (err) |
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return err; |
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if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) |
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return -EINVAL; |
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desc->tfm = tctx->hash; |
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err = crypto_shash_init(desc) ?: |
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crypto_shash_update(desc, keys.enckey, keys.enckeylen) ?: |
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crypto_shash_finup(desc, keys.authkey, keys.authkeylen, salt); |
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if (err) |
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return err; |
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crypto_cipher_clear_flags(tctx->essiv_cipher, CRYPTO_TFM_REQ_MASK); |
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crypto_cipher_set_flags(tctx->essiv_cipher, crypto_aead_get_flags(tfm) & |
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CRYPTO_TFM_REQ_MASK); |
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return crypto_cipher_setkey(tctx->essiv_cipher, salt, |
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crypto_shash_digestsize(tctx->hash)); |
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} |
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static int essiv_aead_setauthsize(struct crypto_aead *tfm, |
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unsigned int authsize) |
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{ |
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struct essiv_tfm_ctx *tctx = crypto_aead_ctx(tfm); |
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|
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return crypto_aead_setauthsize(tctx->u.aead, authsize); |
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} |
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static void essiv_skcipher_done(struct crypto_async_request *areq, int err) |
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{ |
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struct skcipher_request *req = areq->data; |
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skcipher_request_complete(req, err); |
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} |
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static int essiv_skcipher_crypt(struct skcipher_request *req, bool enc) |
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{ |
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struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); |
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const struct essiv_tfm_ctx *tctx = crypto_skcipher_ctx(tfm); |
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struct skcipher_request *subreq = skcipher_request_ctx(req); |
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crypto_cipher_encrypt_one(tctx->essiv_cipher, req->iv, req->iv); |
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skcipher_request_set_tfm(subreq, tctx->u.skcipher); |
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skcipher_request_set_crypt(subreq, req->src, req->dst, req->cryptlen, |
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req->iv); |
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skcipher_request_set_callback(subreq, skcipher_request_flags(req), |
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essiv_skcipher_done, req); |
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return enc ? crypto_skcipher_encrypt(subreq) : |
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crypto_skcipher_decrypt(subreq); |
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} |
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static int essiv_skcipher_encrypt(struct skcipher_request *req) |
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{ |
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return essiv_skcipher_crypt(req, true); |
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} |
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static int essiv_skcipher_decrypt(struct skcipher_request *req) |
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{ |
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return essiv_skcipher_crypt(req, false); |
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} |
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static void essiv_aead_done(struct crypto_async_request *areq, int err) |
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{ |
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struct aead_request *req = areq->data; |
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struct essiv_aead_request_ctx *rctx = aead_request_ctx(req); |
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|
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kfree(rctx->assoc); |
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aead_request_complete(req, err); |
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} |
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static int essiv_aead_crypt(struct aead_request *req, bool enc) |
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{ |
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struct crypto_aead *tfm = crypto_aead_reqtfm(req); |
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const struct essiv_tfm_ctx *tctx = crypto_aead_ctx(tfm); |
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struct essiv_aead_request_ctx *rctx = aead_request_ctx(req); |
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struct aead_request *subreq = &rctx->aead_req; |
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struct scatterlist *src = req->src; |
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int err; |
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crypto_cipher_encrypt_one(tctx->essiv_cipher, req->iv, req->iv); |
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|
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/* |
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* dm-crypt embeds the sector number and the IV in the AAD region, so |
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* we have to copy the converted IV into the right scatterlist before |
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* we pass it on. |
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*/ |
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rctx->assoc = NULL; |
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if (req->src == req->dst || !enc) { |
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scatterwalk_map_and_copy(req->iv, req->dst, |
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req->assoclen - crypto_aead_ivsize(tfm), |
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crypto_aead_ivsize(tfm), 1); |
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} else { |
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u8 *iv = (u8 *)aead_request_ctx(req) + tctx->ivoffset; |
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int ivsize = crypto_aead_ivsize(tfm); |
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int ssize = req->assoclen - ivsize; |
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struct scatterlist *sg; |
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int nents; |
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if (ssize < 0) |
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return -EINVAL; |
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nents = sg_nents_for_len(req->src, ssize); |
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if (nents < 0) |
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return -EINVAL; |
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memcpy(iv, req->iv, ivsize); |
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sg_init_table(rctx->sg, 4); |
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if (unlikely(nents > 1)) { |
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/* |
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* This is a case that rarely occurs in practice, but |
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* for correctness, we have to deal with it nonetheless. |
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*/ |
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rctx->assoc = kmalloc(ssize, GFP_ATOMIC); |
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if (!rctx->assoc) |
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return -ENOMEM; |
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scatterwalk_map_and_copy(rctx->assoc, req->src, 0, |
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ssize, 0); |
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sg_set_buf(rctx->sg, rctx->assoc, ssize); |
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} else { |
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sg_set_page(rctx->sg, sg_page(req->src), ssize, |
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req->src->offset); |
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} |
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sg_set_buf(rctx->sg + 1, iv, ivsize); |
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sg = scatterwalk_ffwd(rctx->sg + 2, req->src, req->assoclen); |
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if (sg != rctx->sg + 2) |
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sg_chain(rctx->sg, 3, sg); |
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src = rctx->sg; |
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} |
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aead_request_set_tfm(subreq, tctx->u.aead); |
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aead_request_set_ad(subreq, req->assoclen); |
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aead_request_set_callback(subreq, aead_request_flags(req), |
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essiv_aead_done, req); |
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aead_request_set_crypt(subreq, src, req->dst, req->cryptlen, req->iv); |
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err = enc ? crypto_aead_encrypt(subreq) : |
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crypto_aead_decrypt(subreq); |
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if (rctx->assoc && err != -EINPROGRESS) |
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kfree(rctx->assoc); |
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return err; |
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} |
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static int essiv_aead_encrypt(struct aead_request *req) |
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{ |
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return essiv_aead_crypt(req, true); |
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} |
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static int essiv_aead_decrypt(struct aead_request *req) |
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{ |
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return essiv_aead_crypt(req, false); |
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} |
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static int essiv_init_tfm(struct essiv_instance_ctx *ictx, |
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struct essiv_tfm_ctx *tctx) |
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{ |
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struct crypto_cipher *essiv_cipher; |
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struct crypto_shash *hash; |
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int err; |
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essiv_cipher = crypto_alloc_cipher(ictx->essiv_cipher_name, 0, 0); |
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if (IS_ERR(essiv_cipher)) |
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return PTR_ERR(essiv_cipher); |
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hash = crypto_alloc_shash(ictx->shash_driver_name, 0, 0); |
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if (IS_ERR(hash)) { |
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err = PTR_ERR(hash); |
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goto err_free_essiv_cipher; |
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} |
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tctx->essiv_cipher = essiv_cipher; |
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tctx->hash = hash; |
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return 0; |
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err_free_essiv_cipher: |
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crypto_free_cipher(essiv_cipher); |
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return err; |
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} |
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static int essiv_skcipher_init_tfm(struct crypto_skcipher *tfm) |
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{ |
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struct skcipher_instance *inst = skcipher_alg_instance(tfm); |
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struct essiv_instance_ctx *ictx = skcipher_instance_ctx(inst); |
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struct essiv_tfm_ctx *tctx = crypto_skcipher_ctx(tfm); |
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struct crypto_skcipher *skcipher; |
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int err; |
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skcipher = crypto_spawn_skcipher(&ictx->u.skcipher_spawn); |
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if (IS_ERR(skcipher)) |
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return PTR_ERR(skcipher); |
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crypto_skcipher_set_reqsize(tfm, sizeof(struct skcipher_request) + |
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crypto_skcipher_reqsize(skcipher)); |
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err = essiv_init_tfm(ictx, tctx); |
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if (err) { |
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crypto_free_skcipher(skcipher); |
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return err; |
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} |
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tctx->u.skcipher = skcipher; |
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return 0; |
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} |
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static int essiv_aead_init_tfm(struct crypto_aead *tfm) |
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{ |
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struct aead_instance *inst = aead_alg_instance(tfm); |
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struct essiv_instance_ctx *ictx = aead_instance_ctx(inst); |
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struct essiv_tfm_ctx *tctx = crypto_aead_ctx(tfm); |
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struct crypto_aead *aead; |
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unsigned int subreq_size; |
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int err; |
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BUILD_BUG_ON(offsetofend(struct essiv_aead_request_ctx, aead_req) != |
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sizeof(struct essiv_aead_request_ctx)); |
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aead = crypto_spawn_aead(&ictx->u.aead_spawn); |
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if (IS_ERR(aead)) |
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return PTR_ERR(aead); |
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subreq_size = sizeof_field(struct essiv_aead_request_ctx, aead_req) + |
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crypto_aead_reqsize(aead); |
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tctx->ivoffset = offsetof(struct essiv_aead_request_ctx, aead_req) + |
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subreq_size; |
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crypto_aead_set_reqsize(tfm, tctx->ivoffset + crypto_aead_ivsize(aead)); |
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err = essiv_init_tfm(ictx, tctx); |
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if (err) { |
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crypto_free_aead(aead); |
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return err; |
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} |
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tctx->u.aead = aead; |
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return 0; |
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} |
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static void essiv_skcipher_exit_tfm(struct crypto_skcipher *tfm) |
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{ |
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struct essiv_tfm_ctx *tctx = crypto_skcipher_ctx(tfm); |
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crypto_free_skcipher(tctx->u.skcipher); |
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crypto_free_cipher(tctx->essiv_cipher); |
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crypto_free_shash(tctx->hash); |
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} |
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static void essiv_aead_exit_tfm(struct crypto_aead *tfm) |
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{ |
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struct essiv_tfm_ctx *tctx = crypto_aead_ctx(tfm); |
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crypto_free_aead(tctx->u.aead); |
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crypto_free_cipher(tctx->essiv_cipher); |
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crypto_free_shash(tctx->hash); |
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} |
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static void essiv_skcipher_free_instance(struct skcipher_instance *inst) |
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{ |
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struct essiv_instance_ctx *ictx = skcipher_instance_ctx(inst); |
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crypto_drop_skcipher(&ictx->u.skcipher_spawn); |
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kfree(inst); |
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} |
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static void essiv_aead_free_instance(struct aead_instance *inst) |
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{ |
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struct essiv_instance_ctx *ictx = aead_instance_ctx(inst); |
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crypto_drop_aead(&ictx->u.aead_spawn); |
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kfree(inst); |
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} |
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static bool parse_cipher_name(char *essiv_cipher_name, const char *cra_name) |
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{ |
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const char *p, *q; |
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int len; |
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/* find the last opening parens */ |
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p = strrchr(cra_name, '('); |
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if (!p++) |
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return false; |
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|
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/* find the first closing parens in the tail of the string */ |
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q = strchr(p, ')'); |
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if (!q) |
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return false; |
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len = q - p; |
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if (len >= CRYPTO_MAX_ALG_NAME) |
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return false; |
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memcpy(essiv_cipher_name, p, len); |
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essiv_cipher_name[len] = '\0'; |
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return true; |
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} |
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static bool essiv_supported_algorithms(const char *essiv_cipher_name, |
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struct shash_alg *hash_alg, |
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int ivsize) |
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{ |
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struct crypto_alg *alg; |
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bool ret = false; |
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alg = crypto_alg_mod_lookup(essiv_cipher_name, |
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CRYPTO_ALG_TYPE_CIPHER, |
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CRYPTO_ALG_TYPE_MASK); |
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if (IS_ERR(alg)) |
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return false; |
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if (hash_alg->digestsize < alg->cra_cipher.cia_min_keysize || |
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hash_alg->digestsize > alg->cra_cipher.cia_max_keysize) |
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goto out; |
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|
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if (ivsize != alg->cra_blocksize) |
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goto out; |
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|
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if (crypto_shash_alg_needs_key(hash_alg)) |
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goto out; |
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ret = true; |
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out: |
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crypto_mod_put(alg); |
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return ret; |
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} |
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|
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static int essiv_create(struct crypto_template *tmpl, struct rtattr **tb) |
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{ |
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struct crypto_attr_type *algt; |
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const char *inner_cipher_name; |
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const char *shash_name; |
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struct skcipher_instance *skcipher_inst = NULL; |
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struct aead_instance *aead_inst = NULL; |
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struct crypto_instance *inst; |
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struct crypto_alg *base, *block_base; |
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struct essiv_instance_ctx *ictx; |
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struct skcipher_alg *skcipher_alg = NULL; |
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struct aead_alg *aead_alg = NULL; |
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struct crypto_alg *_hash_alg; |
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struct shash_alg *hash_alg; |
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int ivsize; |
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u32 type; |
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u32 mask; |
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int err; |
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|
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algt = crypto_get_attr_type(tb); |
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if (IS_ERR(algt)) |
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return PTR_ERR(algt); |
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inner_cipher_name = crypto_attr_alg_name(tb[1]); |
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if (IS_ERR(inner_cipher_name)) |
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return PTR_ERR(inner_cipher_name); |
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shash_name = crypto_attr_alg_name(tb[2]); |
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if (IS_ERR(shash_name)) |
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return PTR_ERR(shash_name); |
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type = algt->type & algt->mask; |
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mask = crypto_algt_inherited_mask(algt); |
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|
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switch (type) { |
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case CRYPTO_ALG_TYPE_SKCIPHER: |
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skcipher_inst = kzalloc(sizeof(*skcipher_inst) + |
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sizeof(*ictx), GFP_KERNEL); |
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if (!skcipher_inst) |
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return -ENOMEM; |
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inst = skcipher_crypto_instance(skcipher_inst); |
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base = &skcipher_inst->alg.base; |
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ictx = crypto_instance_ctx(inst); |
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|
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/* Symmetric cipher, e.g., "cbc(aes)" */ |
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err = crypto_grab_skcipher(&ictx->u.skcipher_spawn, inst, |
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inner_cipher_name, 0, mask); |
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if (err) |
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goto out_free_inst; |
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skcipher_alg = crypto_spawn_skcipher_alg(&ictx->u.skcipher_spawn); |
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block_base = &skcipher_alg->base; |
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ivsize = crypto_skcipher_alg_ivsize(skcipher_alg); |
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break; |
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|
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case CRYPTO_ALG_TYPE_AEAD: |
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aead_inst = kzalloc(sizeof(*aead_inst) + |
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sizeof(*ictx), GFP_KERNEL); |
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if (!aead_inst) |
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return -ENOMEM; |
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inst = aead_crypto_instance(aead_inst); |
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base = &aead_inst->alg.base; |
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ictx = crypto_instance_ctx(inst); |
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/* AEAD cipher, e.g., "authenc(hmac(sha256),cbc(aes))" */ |
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err = crypto_grab_aead(&ictx->u.aead_spawn, inst, |
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inner_cipher_name, 0, mask); |
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if (err) |
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goto out_free_inst; |
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aead_alg = crypto_spawn_aead_alg(&ictx->u.aead_spawn); |
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block_base = &aead_alg->base; |
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if (!strstarts(block_base->cra_name, "authenc(")) { |
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pr_warn("Only authenc() type AEADs are supported by ESSIV\n"); |
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err = -EINVAL; |
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goto out_drop_skcipher; |
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} |
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ivsize = aead_alg->ivsize; |
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break; |
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|
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default: |
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return -EINVAL; |
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} |
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|
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if (!parse_cipher_name(ictx->essiv_cipher_name, block_base->cra_name)) { |
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pr_warn("Failed to parse ESSIV cipher name from skcipher cra_name\n"); |
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err = -EINVAL; |
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goto out_drop_skcipher; |
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} |
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|
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/* Synchronous hash, e.g., "sha256" */ |
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_hash_alg = crypto_alg_mod_lookup(shash_name, |
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CRYPTO_ALG_TYPE_SHASH, |
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CRYPTO_ALG_TYPE_MASK | mask); |
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if (IS_ERR(_hash_alg)) { |
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err = PTR_ERR(_hash_alg); |
|
goto out_drop_skcipher; |
|
} |
|
hash_alg = __crypto_shash_alg(_hash_alg); |
|
|
|
/* Check the set of algorithms */ |
|
if (!essiv_supported_algorithms(ictx->essiv_cipher_name, hash_alg, |
|
ivsize)) { |
|
pr_warn("Unsupported essiv instantiation: essiv(%s,%s)\n", |
|
block_base->cra_name, hash_alg->base.cra_name); |
|
err = -EINVAL; |
|
goto out_free_hash; |
|
} |
|
|
|
/* record the driver name so we can instantiate this exact algo later */ |
|
strscpy(ictx->shash_driver_name, hash_alg->base.cra_driver_name, |
|
CRYPTO_MAX_ALG_NAME); |
|
|
|
/* Instance fields */ |
|
|
|
err = -ENAMETOOLONG; |
|
if (snprintf(base->cra_name, CRYPTO_MAX_ALG_NAME, |
|
"essiv(%s,%s)", block_base->cra_name, |
|
hash_alg->base.cra_name) >= CRYPTO_MAX_ALG_NAME) |
|
goto out_free_hash; |
|
if (snprintf(base->cra_driver_name, CRYPTO_MAX_ALG_NAME, |
|
"essiv(%s,%s)", block_base->cra_driver_name, |
|
hash_alg->base.cra_driver_name) >= CRYPTO_MAX_ALG_NAME) |
|
goto out_free_hash; |
|
|
|
/* |
|
* hash_alg wasn't gotten via crypto_grab*(), so we need to inherit its |
|
* flags manually. |
|
*/ |
|
base->cra_flags |= (hash_alg->base.cra_flags & |
|
CRYPTO_ALG_INHERITED_FLAGS); |
|
base->cra_blocksize = block_base->cra_blocksize; |
|
base->cra_ctxsize = sizeof(struct essiv_tfm_ctx); |
|
base->cra_alignmask = block_base->cra_alignmask; |
|
base->cra_priority = block_base->cra_priority; |
|
|
|
if (type == CRYPTO_ALG_TYPE_SKCIPHER) { |
|
skcipher_inst->alg.setkey = essiv_skcipher_setkey; |
|
skcipher_inst->alg.encrypt = essiv_skcipher_encrypt; |
|
skcipher_inst->alg.decrypt = essiv_skcipher_decrypt; |
|
skcipher_inst->alg.init = essiv_skcipher_init_tfm; |
|
skcipher_inst->alg.exit = essiv_skcipher_exit_tfm; |
|
|
|
skcipher_inst->alg.min_keysize = crypto_skcipher_alg_min_keysize(skcipher_alg); |
|
skcipher_inst->alg.max_keysize = crypto_skcipher_alg_max_keysize(skcipher_alg); |
|
skcipher_inst->alg.ivsize = ivsize; |
|
skcipher_inst->alg.chunksize = crypto_skcipher_alg_chunksize(skcipher_alg); |
|
skcipher_inst->alg.walksize = crypto_skcipher_alg_walksize(skcipher_alg); |
|
|
|
skcipher_inst->free = essiv_skcipher_free_instance; |
|
|
|
err = skcipher_register_instance(tmpl, skcipher_inst); |
|
} else { |
|
aead_inst->alg.setkey = essiv_aead_setkey; |
|
aead_inst->alg.setauthsize = essiv_aead_setauthsize; |
|
aead_inst->alg.encrypt = essiv_aead_encrypt; |
|
aead_inst->alg.decrypt = essiv_aead_decrypt; |
|
aead_inst->alg.init = essiv_aead_init_tfm; |
|
aead_inst->alg.exit = essiv_aead_exit_tfm; |
|
|
|
aead_inst->alg.ivsize = ivsize; |
|
aead_inst->alg.maxauthsize = crypto_aead_alg_maxauthsize(aead_alg); |
|
aead_inst->alg.chunksize = crypto_aead_alg_chunksize(aead_alg); |
|
|
|
aead_inst->free = essiv_aead_free_instance; |
|
|
|
err = aead_register_instance(tmpl, aead_inst); |
|
} |
|
|
|
if (err) |
|
goto out_free_hash; |
|
|
|
crypto_mod_put(_hash_alg); |
|
return 0; |
|
|
|
out_free_hash: |
|
crypto_mod_put(_hash_alg); |
|
out_drop_skcipher: |
|
if (type == CRYPTO_ALG_TYPE_SKCIPHER) |
|
crypto_drop_skcipher(&ictx->u.skcipher_spawn); |
|
else |
|
crypto_drop_aead(&ictx->u.aead_spawn); |
|
out_free_inst: |
|
kfree(skcipher_inst); |
|
kfree(aead_inst); |
|
return err; |
|
} |
|
|
|
/* essiv(cipher_name, shash_name) */ |
|
static struct crypto_template essiv_tmpl = { |
|
.name = "essiv", |
|
.create = essiv_create, |
|
.module = THIS_MODULE, |
|
}; |
|
|
|
static int __init essiv_module_init(void) |
|
{ |
|
return crypto_register_template(&essiv_tmpl); |
|
} |
|
|
|
static void __exit essiv_module_exit(void) |
|
{ |
|
crypto_unregister_template(&essiv_tmpl); |
|
} |
|
|
|
subsys_initcall(essiv_module_init); |
|
module_exit(essiv_module_exit); |
|
|
|
MODULE_DESCRIPTION("ESSIV skcipher/aead wrapper for block encryption"); |
|
MODULE_LICENSE("GPL v2"); |
|
MODULE_ALIAS_CRYPTO("essiv"); |
|
MODULE_IMPORT_NS(CRYPTO_INTERNAL);
|
|
|