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X-Received-From: 2607:f8b0:400e:c05::242 Subject: [Qemu-devel] [PATCH v6 04/18] crypto: cipher: introduce qcrypto_cipher_ctx_new for builtin-backend X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Longpeng\(Mike\)" , arei.gonglei@huawei.com, weidong.huang@huawei.com, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: "Longpeng(Mike)" Extracts qcrypto_cipher_ctx_new() from qcrypto_cipher_new() for builtin-backend impls. Reviewed-by: Daniel P. Berrange Reviewed-by: Gonglei Signed-off-by: Longpeng(Mike) --- crypto/cipher-builtin.c | 101 ++++++++++++++++++++++++++------------------= ---- 1 file changed, 55 insertions(+), 46 deletions(-) diff --git a/crypto/cipher-builtin.c b/crypto/cipher-builtin.c index b4bc2b9..4ecd15e 100644 --- a/crypto/cipher-builtin.c +++ b/crypto/cipher-builtin.c @@ -235,23 +235,24 @@ static int qcrypto_cipher_setiv_aes(QCryptoCipher *ci= pher, =20 =20 =20 -static int qcrypto_cipher_init_aes(QCryptoCipher *cipher, - const uint8_t *key, size_t nkey, - Error **errp) +static QCryptoCipherBuiltin * +qcrypto_cipher_init_aes(QCryptoCipherMode mode, + const uint8_t *key, size_t nkey, + Error **errp) { QCryptoCipherBuiltin *ctxt; =20 - if (cipher->mode !=3D QCRYPTO_CIPHER_MODE_CBC && - cipher->mode !=3D QCRYPTO_CIPHER_MODE_ECB && - cipher->mode !=3D QCRYPTO_CIPHER_MODE_XTS) { + if (mode !=3D QCRYPTO_CIPHER_MODE_CBC && + mode !=3D QCRYPTO_CIPHER_MODE_ECB && + mode !=3D QCRYPTO_CIPHER_MODE_XTS) { error_setg(errp, "Unsupported cipher mode %s", - QCryptoCipherMode_lookup[cipher->mode]); - return -1; + QCryptoCipherMode_lookup[mode]); + return NULL; } =20 ctxt =3D g_new0(QCryptoCipherBuiltin, 1); =20 - if (cipher->mode =3D=3D QCRYPTO_CIPHER_MODE_XTS) { + if (mode =3D=3D QCRYPTO_CIPHER_MODE_XTS) { if (AES_set_encrypt_key(key, nkey * 4, &ctxt->state.aes.key.enc) != =3D 0) { error_setg(errp, "Failed to set encryption key"); goto error; @@ -291,13 +292,11 @@ static int qcrypto_cipher_init_aes(QCryptoCipher *cip= her, ctxt->encrypt =3D qcrypto_cipher_encrypt_aes; ctxt->decrypt =3D qcrypto_cipher_decrypt_aes; =20 - cipher->opaque =3D ctxt; - - return 0; + return ctxt; =20 error: g_free(ctxt); - return -1; + return NULL; } =20 =20 @@ -370,16 +369,17 @@ static int qcrypto_cipher_setiv_des_rfb(QCryptoCipher= *cipher, } =20 =20 -static int qcrypto_cipher_init_des_rfb(QCryptoCipher *cipher, - const uint8_t *key, size_t nkey, - Error **errp) +static QCryptoCipherBuiltin * +qcrypto_cipher_init_des_rfb(QCryptoCipherMode mode, + const uint8_t *key, size_t nkey, + Error **errp) { QCryptoCipherBuiltin *ctxt; =20 - if (cipher->mode !=3D QCRYPTO_CIPHER_MODE_ECB) { + if (mode !=3D QCRYPTO_CIPHER_MODE_ECB) { error_setg(errp, "Unsupported cipher mode %s", - QCryptoCipherMode_lookup[cipher->mode]); - return -1; + QCryptoCipherMode_lookup[mode]); + return NULL; } =20 ctxt =3D g_new0(QCryptoCipherBuiltin, 1); @@ -394,9 +394,7 @@ static int qcrypto_cipher_init_des_rfb(QCryptoCipher *c= ipher, ctxt->encrypt =3D qcrypto_cipher_encrypt_des_rfb; ctxt->decrypt =3D qcrypto_cipher_decrypt_des_rfb; =20 - cipher->opaque =3D ctxt; - - return 0; + return ctxt; } =20 =20 @@ -426,12 +424,13 @@ bool qcrypto_cipher_supports(QCryptoCipherAlgorithm a= lg, } =20 =20 -QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgorithm alg, - QCryptoCipherMode mode, - const uint8_t *key, size_t nkey, - Error **errp) +static QCryptoCipherBuiltin *qcrypto_cipher_ctx_new(QCryptoCipherAlgorithm= alg, + QCryptoCipherMode mode, + const uint8_t *key, + size_t nkey, + Error **errp) { - QCryptoCipher *cipher; + QCryptoCipherBuiltin *ctxt; =20 switch (mode) { case QCRYPTO_CIPHER_MODE_ECB: @@ -444,39 +443,27 @@ QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgori= thm alg, return NULL; } =20 - cipher =3D g_new0(QCryptoCipher, 1); - cipher->alg =3D alg; - cipher->mode =3D mode; - if (!qcrypto_cipher_validate_key_length(alg, mode, nkey, errp)) { - goto error; + return NULL; } =20 - switch (cipher->alg) { + switch (alg) { case QCRYPTO_CIPHER_ALG_DES_RFB: - if (qcrypto_cipher_init_des_rfb(cipher, key, nkey, errp) < 0) { - goto error; - } + ctxt =3D qcrypto_cipher_init_des_rfb(mode, key, nkey, errp); break; case QCRYPTO_CIPHER_ALG_AES_128: case QCRYPTO_CIPHER_ALG_AES_192: case QCRYPTO_CIPHER_ALG_AES_256: - if (qcrypto_cipher_init_aes(cipher, key, nkey, errp) < 0) { - goto error; - } + ctxt =3D qcrypto_cipher_init_aes(mode, key, nkey, errp); break; default: error_setg(errp, "Unsupported cipher algorithm %s", - QCryptoCipherAlgorithm_lookup[cipher->alg]); - goto error; + QCryptoCipherAlgorithm_lookup[alg]); + return NULL; } =20 - return cipher; - - error: - g_free(cipher); - return NULL; + return ctxt; } =20 void qcrypto_cipher_free(QCryptoCipher *cipher) @@ -537,3 +524,25 @@ int qcrypto_cipher_setiv(QCryptoCipher *cipher, =20 return ctxt->setiv(cipher, iv, niv, errp); } + + +QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgorithm alg, + QCryptoCipherMode mode, + const uint8_t *key, size_t nkey, + Error **errp) +{ + QCryptoCipher *cipher; + QCryptoCipherBuiltin *ctxt; + + ctxt =3D qcrypto_cipher_ctx_new(alg, mode, key, nkey, errp); + if (!ctxt) { + return NULL; + } + + cipher =3D g_new0(QCryptoCipher, 1); + cipher->alg =3D alg; + cipher->mode =3D mode; + cipher->opaque =3D ctxt; + + return cipher; +} --=20 1.8.3.1