> ## Documentation Index
> Fetch the complete documentation index at: https://docs.nebius.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Sign Hash

> Signs a hashed value using an asymmetric key.



## OpenAPI

````yaml https://api.nebius.cloud/openapi.json post /kms/v1/asymmetric-crypto/sign-hash
openapi: 3.0.3
info:
  title: Nebius API
  version: version not set
servers:
  - url: https://api.nebius.cloud
security:
  - bearerAuth: []
tags:
  - name: nebius.ai.v1.EndpointService
  - name: nebius.ai.v1.JobService
  - name: nebius.applications.v1alpha1.K8sReleaseService
  - name: nebius.audit.v2.AuditEventExportService
  - name: nebius.audit.v2.AuditEventService
  - name: nebius.billing.v1.CalculatorService
  - name: nebius.billing.v1alpha1.CalculatorService
  - name: nebius.billing.v1alpha1.OneTimeExportService
  - name: nebius.capacity.v1.CapacityAllowanceService
  - name: nebius.capacity.v1.CapacityBlockGroupService
  - name: nebius.capacity.v1.CapacityIntervalService
  - name: nebius.capacity.v1.ResourceAdviceService
  - name: nebius.compute.v1.DiskService
  - name: nebius.compute.v1.DiskSnapshotService
  - name: nebius.compute.v1.FilesystemService
  - name: nebius.compute.v1.GpuClusterService
  - name: nebius.compute.v1.ImageService
  - name: nebius.compute.v1.InstanceService
  - name: nebius.compute.v1.MaintenanceService
  - name: nebius.compute.v1.NVLInstanceGroupService
  - name: nebius.compute.v1.NodeService
  - name: nebius.compute.v1.PlatformService
  - name: nebius.dns.v1.RecordService
  - name: nebius.dns.v1.ZoneService
  - name: nebius.iam.v1.AccessKeyService
  - name: nebius.iam.v1.AccessPermitService
  - name: nebius.iam.v1.AuthPublicKeyService
  - name: nebius.iam.v1.FederatedCredentialsService
  - name: nebius.iam.v1.FederationCertificateService
  - name: nebius.iam.v1.FederationService
  - name: nebius.iam.v1.GroupMembershipService
  - name: nebius.iam.v1.GroupService
  - name: nebius.iam.v1.InvitationService
  - name: nebius.iam.v1.ProfileService
  - name: nebius.iam.v1.ProjectService
  - name: nebius.iam.v1.ServiceAccountService
  - name: nebius.iam.v1.SessionManagementService
  - name: nebius.iam.v1.StaticKeyService
  - name: nebius.iam.v1.TenantService
  - name: nebius.iam.v1.TenantUserAccountService
  - name: nebius.iam.v1.TenantUserAccountWithAttributesService
  - name: nebius.iam.v2.AccessKeyService
  - name: nebius.iam.v2.ProjectService
  - name: nebius.iam.v2.TenantService
  - name: nebius.kms.v1.AsymmetricCryptoService
  - name: nebius.kms.v1.AsymmetricKeyService
  - name: nebius.kms.v1.SymmetricCryptoService
  - name: nebius.kms.v1.SymmetricKeyService
  - name: nebius.logging.agentmanager.v1.VersionService
  - name: nebius.logging.v1.LogExportService
  - name: nebius.maintenance.v1alpha1.MaintenanceService
  - name: nebius.mk8s.v1.ClusterService
  - name: nebius.mk8s.v1.NodeGroupService
  - name: nebius.mk8s.v1alpha1.ClusterService
  - name: nebius.mk8s.v1alpha1.NodeGroupService
  - name: nebius.msp.mlflow.v1alpha1.ClusterService
  - name: nebius.msp.postgresql.v1alpha1.BackupService
  - name: nebius.msp.postgresql.v1alpha1.ClusterService
  - name: nebius.mysterybox.v1.PayloadService
  - name: nebius.mysterybox.v1.SecretService
  - name: nebius.mysterybox.v1.SecretVersionService
  - name: nebius.quotas.v1.QuotaAllowanceService
  - name: nebius.registry.v1.ArtifactService
  - name: nebius.registry.v1.RegistryService
  - name: nebius.storage.v1.BucketService
  - name: nebius.storage.v1.TransferService
  - name: nebius.storage.v1alpha1.TransferService
  - name: nebius.tunnel.v1.TunnelService
  - name: nebius.vpc.v1.AllocationService
  - name: nebius.vpc.v1.NetworkService
  - name: nebius.vpc.v1.PoolService
  - name: nebius.vpc.v1.RouteService
  - name: nebius.vpc.v1.RouteTableService
  - name: nebius.vpc.v1.SecurityGroupService
  - name: nebius.vpc.v1.SecurityRuleService
  - name: nebius.vpc.v1.SubnetService
  - name: nebius.vpc.v1.TargetGroupService
  - name: nebius.vpc.v1alpha1.AllocationService
  - name: nebius.vpc.v1alpha1.NetworkService
  - name: nebius.vpc.v1alpha1.PoolService
  - name: nebius.vpc.v1alpha1.ScopeService
  - name: nebius.vpc.v1alpha1.SubnetService
paths:
  /kms/v1/asymmetric-crypto/sign-hash:
    post:
      tags:
        - nebius.kms.v1.AsymmetricCryptoService
      summary: Sign Hash
      description: Signs a hashed value using an asymmetric key.
      operationId: AsymmetricCryptoService_SignHash
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/v1AsymmetricSignHashRequest'
        required: true
        x-originalParamName: body
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/v1AsymmetricSignHashResponse'
          description: A successful response.
components:
  schemas:
    v1AsymmetricSignHashRequest:
      properties:
        hash:
          description: Hash to sign.
          format: byte
          type: string
        keyId:
          description: ID of the asymmetric KMS key to use for signing the hash.
          type: string
      required:
        - keyId
        - hash
      type: object
    v1AsymmetricSignHashResponse:
      properties:
        keyId:
          description: ID of the asymmetric KMS key used to produce the signature.
          type: string
        signature:
          description: Value of signature.
          format: byte
          type: string
      type: object
  securitySchemes:
    bearerAuth:
      description: The Authorization header expects a Bearer token.
      scheme: bearer
      type: http

````