syntax = "proto3";

package attestation.v1;

option go_package = "github.com/ultravioletrs/cocos/internal/proto/attestation/v1;attestation";

service AttestationService {
  rpc FetchAttestation (AttestationRequest) returns (AttestationResponse);
  rpc FetchRawEvidence (AttestationRequest) returns (RawEvidenceResponse);
  rpc FetchAzureToken (AzureTokenRequest) returns (AzureTokenResponse);
  rpc FetchKbsToken (KbsTokenRequest) returns (KbsTokenResponse);
}

message KbsTokenRequest {}

message KbsTokenResponse {
  bytes token = 1;
}

message AttestationRequest {
  bytes report_data = 1; // 64 bytes for SNP/TDX
  bytes nonce = 2;       // Nonce for vTPM
  PlatformType platform_type = 3;
}

message AttestationResponse {
  bytes eat_token = 1; // EAT token (JWT or CBOR format)
}

message RawEvidenceResponse {
  bytes evidence = 1; // Raw binary evidence (for KBS)
}

message AzureTokenRequest {
  bytes nonce = 1;
}

message AzureTokenResponse {
  bytes token = 1;
}

enum PlatformType {
  PLATFORM_TYPE_UNSPECIFIED = 0;
  PLATFORM_TYPE_SNP = 1;
  PLATFORM_TYPE_TDX = 2;
  PLATFORM_TYPE_VTPM = 3;
  PLATFORM_TYPE_SNP_VTPM = 4;
  PLATFORM_TYPE_AZURE = 5;
  PLATFORM_TYPE_NO_CC = 6;
}