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Thu, 08 Aug 2024 12:04:43 -0400 X-MC-Unique: 4k9LryapMFyJFgihj67nbQ-1 Received: from mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.40]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id AA25D196CDFE; Thu, 8 Aug 2024 16:04:41 +0000 (UTC) Received: from redhat.com (unknown [10.42.28.163]) by mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 99ECF19560AA; Thu, 8 Aug 2024 16:04:38 +0000 (UTC) Date: Thu, 8 Aug 2024 17:04:34 +0100 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: Alejandro Zeise Cc: qemu-arm@nongnu.org, kris.conklin@seagate.com, jonathan.henze@seagate.com, evan.burgess@seagate.com, clg@kaod.org, peter.maydell@linaro.org, qemu-devel@nongnu.org Subject: Re: [PATCH v4 01/15] crypto: accumulative hashing API Message-ID: References: <20240807195122.2827364-1-alejandro.zeise@seagate.com> <20240807195122.2827364-2-alejandro.zeise@seagate.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20240807195122.2827364-2-alejandro.zeise@seagate.com> User-Agent: Mutt/2.2.12 (2023-09-09) X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 Received-SPF: pass client-ip=170.10.133.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.141, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=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: , Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Errors-To: qemu-devel-bounces+alex.bennee=linaro.org@nongnu.org Sender: qemu-devel-bounces+alex.bennee=linaro.org@nongnu.org X-TUID: bBC7Zgw0K42O On Wed, Aug 07, 2024 at 07:51:08PM +0000, Alejandro Zeise wrote: > Changes the hash API to support accumulative hashing. > Hash objects are created with "qcrypto_hash_new", > updated with data with "qcrypto_hash_update", and > the hash obtained with "qcrypto_hash_finalize". > > These changes bring the hashing API more in line with the > hmac API. > > Signed-off-by: Alejandro Zeise > --- > crypto/hashpriv.h | 13 +++++ > include/crypto/hash.h | 119 ++++++++++++++++++++++++++++++++++++++++++ > 2 files changed, 132 insertions(+) > > diff --git a/crypto/hashpriv.h b/crypto/hashpriv.h > index cee26ccb47..02f17ee99f 100644 > --- a/crypto/hashpriv.h > +++ b/crypto/hashpriv.h > @@ -1,6 +1,7 @@ > /* > * QEMU Crypto hash driver supports > * > + * Copyright (c) 2024 Seagate Technology LLC and/or its Affiliates > * Copyright (c) 2017 HUAWEI TECHNOLOGIES CO., LTD. > * > * Authors: > @@ -15,6 +16,8 @@ > #ifndef QCRYPTO_HASHPRIV_H > #define QCRYPTO_HASHPRIV_H > > +#include "crypto/hash.h" > + > typedef struct QCryptoHashDriver QCryptoHashDriver; > > struct QCryptoHashDriver { > @@ -24,6 +27,16 @@ struct QCryptoHashDriver { > uint8_t **result, > size_t *resultlen, > Error **errp); > + QCryptoHash *(*hash_new)(QCryptoHashAlgorithm alg, Error **errp); > + int (*hash_update)(QCryptoHash *hash, > + const struct iovec *iov, > + size_t niov, > + Error **errp); > + int (*hash_finalize)(QCryptoHash *hash, > + uint8_t **result, > + size_t *resultlen, > + Error **errp); > + void (*hash_free)(QCryptoHash *hash); > }; > > extern QCryptoHashDriver qcrypto_hash_lib_driver; > diff --git a/include/crypto/hash.h b/include/crypto/hash.h > index 54d87aa2a1..6d7222867e 100644 > --- a/include/crypto/hash.h > +++ b/include/crypto/hash.h > @@ -1,6 +1,7 @@ > /* > * QEMU Crypto hash algorithms > * > + * Copyright (c) 2024 Seagate Technology LLC and/or its Affiliates > * Copyright (c) 2015 Red Hat, Inc. > * > * This library is free software; you can redistribute it and/or > @@ -25,6 +26,13 @@ > > /* See also "QCryptoHashAlgorithm" defined in qapi/crypto.json */ > > +typedef struct QCryptoHash QCryptoHash; > +struct QCryptoHash { > + QCryptoHashAlgorithm alg; > + void *opaque; > + void *driver; > +}; > + > /** > * qcrypto_hash_supports: > * @alg: the hash algorithm > @@ -120,6 +128,117 @@ int qcrypto_hash_digestv(QCryptoHashAlgorithm alg, > char **digest, > Error **errp); > > +/** > + * qcrypto_hash_updatev: > + * @hash: hash object from qcrypto_hash_new > + * @iov: the array of memory regions to hash > + * @niov: the length of @iov > + * @errp: pointer to a NULL-initialized error object > + * > + * Updates the given hash object with all the memory regions > + * present in @iov. > + * > + * Returns: 0 on success, non-zero on error Minor point, this and all the other APIs should be saying 'or -1 on error' to follow QEMU's error reporting standards. With regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|