[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-09 UTC."],[],[],null,["# Cloud KMS V1 Client - Class AttestationFormat (2.3.1)\n\nVersion latestkeyboard_arrow_down\n\n- [2.3.1 (latest)](/php/docs/reference/cloud-kms/latest/V1.KeyOperationAttestation.AttestationFormat)\n- [2.3.0](/php/docs/reference/cloud-kms/2.3.0/V1.KeyOperationAttestation.AttestationFormat)\n- [2.2.0](/php/docs/reference/cloud-kms/2.2.0/V1.KeyOperationAttestation.AttestationFormat)\n- [2.1.6](/php/docs/reference/cloud-kms/2.1.6/V1.KeyOperationAttestation.AttestationFormat)\n- [2.0.0](/php/docs/reference/cloud-kms/2.0.0/V1.KeyOperationAttestation.AttestationFormat)\n- [1.23.0](/php/docs/reference/cloud-kms/1.23.0/V1.KeyOperationAttestation.AttestationFormat)\n- [1.22.1](/php/docs/reference/cloud-kms/1.22.1/V1.KeyOperationAttestation.AttestationFormat)\n- [1.21.4](/php/docs/reference/cloud-kms/1.21.4/V1.KeyOperationAttestation.AttestationFormat)\n- [1.20.3](/php/docs/reference/cloud-kms/1.20.3/V1.KeyOperationAttestation.AttestationFormat)\n- [1.19.0](/php/docs/reference/cloud-kms/1.19.0/V1.KeyOperationAttestation.AttestationFormat)\n- [1.18.1](/php/docs/reference/cloud-kms/1.18.1/V1.KeyOperationAttestation.AttestationFormat)\n- [1.17.0](/php/docs/reference/cloud-kms/1.17.0/V1.KeyOperationAttestation.AttestationFormat)\n- [1.16.4](/php/docs/reference/cloud-kms/1.16.4/V1.KeyOperationAttestation.AttestationFormat)\n- [1.15.3](/php/docs/reference/cloud-kms/1.15.3/V1.KeyOperationAttestation.AttestationFormat) \nReference documentation and code samples for the Cloud KMS V1 Client class AttestationFormat.\n\nAttestation formats provided by the HSM.\n\nProtobuf type `google.cloud.kms.v1.KeyOperationAttestation.AttestationFormat`\n\nNamespace\n---------\n\nGoogle \\\\ Cloud \\\\ Kms \\\\ V1 \\\\ KeyOperationAttestation\n\nMethods\n-------\n\n### static::name\n\n### static::value\n\nConstants\n---------\n\n### ATTESTATION_FORMAT_UNSPECIFIED\n\n Value: 0\n\nNot specified.\n\nGenerated from protobuf enum `ATTESTATION_FORMAT_UNSPECIFIED = 0;`\n\n### CAVIUM_V1_COMPRESSED\n\n Value: 3\n\nCavium HSM attestation compressed with gzip. Note that this format is\ndefined by Cavium and subject to change at any time.\n\nSee\n\u003chttps://www.marvell.com/products/security-solutions/nitrox-hs-adapters/software-key-attestation.html\u003e.\n\nGenerated from protobuf enum `CAVIUM_V1_COMPRESSED = 3;`\n\n### CAVIUM_V2_COMPRESSED\n\n Value: 4\n\nCavium HSM attestation V2 compressed with gzip. This is a new format\nintroduced in Cavium's version 3.2-08.\n\nGenerated from protobuf enum `CAVIUM_V2_COMPRESSED = 4;`"]]