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([10.4.50.14]) by lcopiesaa001.seagate.com with ESMTP; 05 Aug 2024 08:53:22 -0700 From: Alejandro Zeise To: qemu-arm@nongnu.org Cc: alejandro.zeise@seagate.com, kris.conklin@seagate.com, jonathan.henze@seagate.com, evan.burgess@seagate.com, clg@kaod.org, peter.maydell@linaro.org, berrange@redhat.com, qemu-devel@nongnu.org Subject: [PATCH v3 09/12] crypto/hash-nettle: Implement new hash API Date: Mon, 5 Aug 2024 15:50:44 +0000 Message-Id: <20240805155047.3151540-10-alejandro.zeise@seagate.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240805155047.3151540-1-alejandro.zeise@seagate.com> References: <20240805155047.3151540-1-alejandro.zeise@seagate.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PEPF000044F2:EE_|MN0PR20MB7295:EE_ X-MS-Office365-Filtering-Correlation-Id: 1c5c9f7a-1a58-4cdf-9772-08dcb566c100 STX-Hosted-IronPort-Oubound: True X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Ip=[134.204.222.53]; Helo=[lcopzesaa002.seagate.com] X-MS-Exchange-CrossTenant-AuthSource: CO1PEPF000044F2.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN0PR20MB7295 Received-SPF: pass client-ip=216.71.153.94; envelope-from=alejandro.zeise@seagate.com; helo=esa.hc4959-67.iphmx.com X-Spam_score_int: -44 X-Spam_score: -4.5 X-Spam_bar: ---- X-Spam_report: (-4.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.143, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Implements the new hashing API in the nettle hash driver. Supports creating/destroying a context, updating the context with input data and obtaining an output hash. Signed-off-by: Alejandro Zeise --- crypto/hash-nettle.c | 81 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) diff --git a/crypto/hash-nettle.c b/crypto/hash-nettle.c index dbf1d96dfe..643f3d68b8 100644 --- a/crypto/hash-nettle.c +++ b/crypto/hash-nettle.c @@ -23,6 +23,7 @@ #include "qapi/error.h" #include "crypto/hash.h" #include "hashpriv.h" +#include #include #include #include @@ -105,7 +106,85 @@ gboolean qcrypto_hash_supports(QCryptoHashAlgorithm alg) } +static +QCryptoHash *qcrypto_nettle_hash_new(QCryptoHashAlgorithm alg, Error **errp) +{ + QCryptoHash *hash = NULL; + + if (!qcrypto_hash_supports(alg)) { + error_setg(errp, + "Unknown hash algorithm %d", + alg); + } else { + hash = g_new(QCryptoHash, 1); + hash->alg = alg; + hash->opaque = g_new(union qcrypto_hash_ctx, 1); + + qcrypto_hash_alg_map[alg].init(hash->opaque); + } + + return hash; +} + +static +int qcrypto_nettle_hash_free(QCryptoHash *hash) +{ + union qcrypto_hash_ctx *ctx = hash->opaque; + + g_free(ctx); + g_free(hash); + + return 0; +} + +static +int qcrypto_nettle_hash_update(QCryptoHash *hash, + const struct iovec *iov, + size_t niov, + Error **errp) +{ + union qcrypto_hash_ctx *ctx = hash->opaque; + + for (int i = 0; i < niov; i++) { + /* + * Some versions of nettle have functions + * declared with 'int' instead of 'size_t' + * so to be safe avoid writing more than + * UINT_MAX bytes at a time + */ + size_t len = iov[i].iov_len; + uint8_t *base = iov[i].iov_base; + while (len) { + size_t shortlen = MIN(len, UINT_MAX); + qcrypto_hash_alg_map[hash->alg].write(ctx, len, base); + len -= shortlen; + base += len; + } + } + + return 0; +} + +static +int qcrypto_nettle_hash_finalize(QCryptoHash *hash, + uint8_t **result, + size_t *result_len, + Error **errp) +{ + union qcrypto_hash_ctx *ctx = hash->opaque; + + *result_len = qcrypto_hash_alg_map[hash->alg].len; + *result = g_new(uint8_t, *result_len); + + qcrypto_hash_alg_map[hash->alg].result(ctx, *result_len, *result); + + return 0; +} QCryptoHashDriver qcrypto_hash_lib_driver = { + .hash_new = qcrypto_nettle_hash_new, + .hash_free = qcrypto_nettle_hash_free, + .hash_update = qcrypto_nettle_hash_update, + .hash_finalize = qcrypto_nettle_hash_finalize };