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Jamin Lin
a4383c0862
AEAD modes such as GCM authenticate optional associated data (AAD) and produce an authentication tag, which the block-cipher encrypt/decrypt interface cannot express. Add qcrypto_cipher_setaad() and qcrypto_cipher_gettag() plus the matching backend driver hooks. The generic front-end reports an error when the selected mode's driver does not implement them, so calling them on a non-AEAD mode fails cleanly. Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Kane Chen <kane_chen@aspeedtech.com> Link: https://lore.kernel.org/qemu-devel/20260811060115.1849266-9-jamin_lin@aspeedtech.com Signed-off-by: Cédric Le Goater <clg@redhat.com>
61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/*
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* QEMU Crypto cipher driver supports
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*
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* Copyright (c) 2017 HUAWEI TECHNOLOGIES CO., LTD.
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*
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* Authors:
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* Longpeng(Mike) <longpeng2@huawei.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or
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* (at your option) any later version. See the COPYING file in the
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* top-level directory.
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*
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*/
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#ifndef QCRYPTO_CIPHERPRIV_H
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#define QCRYPTO_CIPHERPRIV_H
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#include "qapi/qapi-types-crypto.h"
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struct QCryptoCipherDriver {
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int (*cipher_encrypt)(QCryptoCipher *cipher,
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const void *in,
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void *out,
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size_t len,
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Error **errp);
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int (*cipher_decrypt)(QCryptoCipher *cipher,
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const void *in,
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void *out,
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size_t len,
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Error **errp);
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int (*cipher_setiv)(QCryptoCipher *cipher,
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const uint8_t *iv, size_t niv,
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Error **errp);
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int (*cipher_setaad)(QCryptoCipher *cipher,
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const uint8_t *aad, size_t len,
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Error **errp);
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int (*cipher_gettag)(QCryptoCipher *cipher,
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uint8_t *tag, size_t len,
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Error **errp);
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void (*cipher_free)(QCryptoCipher *cipher);
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};
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#ifdef CONFIG_AF_ALG
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#include "afalgpriv.h"
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extern QCryptoCipher *
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qcrypto_afalg_cipher_ctx_new(QCryptoCipherAlgo alg,
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QCryptoCipherMode mode,
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const uint8_t *key,
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size_t nkey, Error **errp);
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#endif
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#endif
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