ef834aa2b2
QAPI's 'prefix' feature can make the connection between enumeration
type and its constants less than obvious. It's best used with
restraint.
QCryptoHashAlgorithm has a 'prefix' that overrides the generated
enumeration constants' prefix to QCRYPTO_HASH_ALG.
We could simply drop 'prefix', but then the prefix becomes
QCRYPTO_HASH_ALGORITHM, which is rather long.
We could additionally rename the type to QCryptoHashAlg, but I think
the abbreviation "alg" is less than clear.
Rename the type to QCryptoHashAlgo instead. The prefix becomes to
QCRYPTO_HASH_ALGO.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <20240904111836.3273842-12-armbru@redhat.com>
[Conflicts with merge commit 7bbadc60b5 resolved]
143 lines
4.7 KiB
C
143 lines
4.7 KiB
C
/*
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* QEMU Crypto block device encryption
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*
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* Copyright (c) 2015-2016 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef QCRYPTO_BLOCKPRIV_H
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#define QCRYPTO_BLOCKPRIV_H
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#include "crypto/block.h"
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#include "qemu/thread.h"
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typedef struct QCryptoBlockDriver QCryptoBlockDriver;
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struct QCryptoBlock {
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QCryptoBlockFormat format;
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const QCryptoBlockDriver *driver;
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void *opaque;
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/* Cipher parameters */
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QCryptoCipherAlgorithm alg;
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QCryptoCipherMode mode;
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uint8_t *key;
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size_t nkey;
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QCryptoCipher **free_ciphers;
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size_t max_free_ciphers;
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size_t n_free_ciphers;
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QCryptoIVGen *ivgen;
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QemuMutex mutex;
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QCryptoHashAlgo kdfhash;
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size_t niv;
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uint64_t payload_offset; /* In bytes */
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uint64_t sector_size; /* In bytes */
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bool detached_header; /* True if disk has a detached LUKS header */
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};
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struct QCryptoBlockDriver {
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int (*open)(QCryptoBlock *block,
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QCryptoBlockOpenOptions *options,
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const char *optprefix,
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QCryptoBlockReadFunc readfunc,
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void *opaque,
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unsigned int flags,
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Error **errp);
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int (*create)(QCryptoBlock *block,
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QCryptoBlockCreateOptions *options,
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const char *optprefix,
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QCryptoBlockInitFunc initfunc,
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QCryptoBlockWriteFunc writefunc,
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void *opaque,
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Error **errp);
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int (*amend)(QCryptoBlock *block,
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QCryptoBlockReadFunc readfunc,
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QCryptoBlockWriteFunc writefunc,
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void *opaque,
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QCryptoBlockAmendOptions *options,
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bool force,
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Error **errp);
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int (*get_info)(QCryptoBlock *block,
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QCryptoBlockInfo *info,
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Error **errp);
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void (*cleanup)(QCryptoBlock *block);
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int (*encrypt)(QCryptoBlock *block,
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uint64_t startsector,
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uint8_t *buf,
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size_t len,
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Error **errp);
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int (*decrypt)(QCryptoBlock *block,
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uint64_t startsector,
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uint8_t *buf,
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size_t len,
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Error **errp);
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bool (*has_format)(const uint8_t *buf,
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size_t buflen);
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};
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int qcrypto_block_cipher_decrypt_helper(QCryptoCipher *cipher,
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size_t niv,
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QCryptoIVGen *ivgen,
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int sectorsize,
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uint64_t offset,
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uint8_t *buf,
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size_t len,
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Error **errp);
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int qcrypto_block_cipher_encrypt_helper(QCryptoCipher *cipher,
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size_t niv,
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QCryptoIVGen *ivgen,
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int sectorsize,
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uint64_t offset,
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uint8_t *buf,
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size_t len,
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Error **errp);
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int qcrypto_block_decrypt_helper(QCryptoBlock *block,
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int sectorsize,
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uint64_t offset,
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uint8_t *buf,
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size_t len,
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Error **errp);
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int qcrypto_block_encrypt_helper(QCryptoBlock *block,
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int sectorsize,
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uint64_t offset,
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uint8_t *buf,
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size_t len,
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Error **errp);
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int qcrypto_block_init_cipher(QCryptoBlock *block,
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QCryptoCipherAlgorithm alg,
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QCryptoCipherMode mode,
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const uint8_t *key, size_t nkey,
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Error **errp);
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void qcrypto_block_free_cipher(QCryptoBlock *block);
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#endif /* QCRYPTO_BLOCKPRIV_H */
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