[[["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,["# Google Cloud Storage Transfer V1 Client - Class AuthMethod (2.2.1)\n\nVersion latestkeyboard_arrow_down\n\n- [2.2.1 (latest)](/php/docs/reference/cloud-storage-transfer/latest/V1.S3CompatibleMetadata.AuthMethod)\n- [2.2.0](/php/docs/reference/cloud-storage-transfer/2.2.0/V1.S3CompatibleMetadata.AuthMethod)\n- [2.1.1](/php/docs/reference/cloud-storage-transfer/2.1.1/V1.S3CompatibleMetadata.AuthMethod)\n- [2.0.2](/php/docs/reference/cloud-storage-transfer/2.0.2/V1.S3CompatibleMetadata.AuthMethod)\n- [1.5.0](/php/docs/reference/cloud-storage-transfer/1.5.0/V1.S3CompatibleMetadata.AuthMethod)\n- [1.4.5](/php/docs/reference/cloud-storage-transfer/1.4.5/V1.S3CompatibleMetadata.AuthMethod)\n- [1.3.1](/php/docs/reference/cloud-storage-transfer/1.3.1/V1.S3CompatibleMetadata.AuthMethod)\n- [1.2.0](/php/docs/reference/cloud-storage-transfer/1.2.0/V1.S3CompatibleMetadata.AuthMethod)\n- [1.1.1](/php/docs/reference/cloud-storage-transfer/1.1.1/V1.S3CompatibleMetadata.AuthMethod)\n- [1.0.6](/php/docs/reference/cloud-storage-transfer/1.0.6/V1.S3CompatibleMetadata.AuthMethod) \nReference documentation and code samples for the Google Cloud Storage Transfer V1 Client class AuthMethod.\n\nThe authentication and authorization method used by the storage service.\n\nProtobuf type `google.storagetransfer.v1.S3CompatibleMetadata.AuthMethod`\n\nNamespace\n---------\n\nGoogle \\\\ Cloud \\\\ StorageTransfer \\\\ V1 \\\\ S3CompatibleMetadata\n\nMethods\n-------\n\n### static::name\n\n### static::value\n\nConstants\n---------\n\n### AUTH_METHOD_UNSPECIFIED\n\n Value: 0\n\nAuthMethod is not specified.\n\nGenerated from protobuf enum `AUTH_METHOD_UNSPECIFIED = 0;`\n\n### AUTH_METHOD_AWS_SIGNATURE_V4\n\n Value: 1\n\nAuth requests with AWS SigV4.\n\nGenerated from protobuf enum `AUTH_METHOD_AWS_SIGNATURE_V4 = 1;`\n\n### AUTH_METHOD_AWS_SIGNATURE_V2\n\n Value: 2\n\nAuth requests with AWS SigV2.\n\nGenerated from protobuf enum `AUTH_METHOD_AWS_SIGNATURE_V2 = 2;`"]]