COCOS-577 - Introduce Go-based CoRIM generation and deprecate Rust attestation policy scripts. (#578)

* feat: Introduce Go-based CoRIM generation and deprecate Rust attestation policy scripts.

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* feat: Update dependencies and refactor attestation policy handling

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* refactor: Migrate attestation verification to use CoRIM and remove deprecated policy handling and EAT verification tests.

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* Removed the `tdx` and `sev-snp` attestation policy scripts and their build configurations, along with related build and installation steps from the main Makefile.

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* chore: Remove Rust CI workflow and Cargo Dependabot configuration, and enhance Go test setup for attestation policy paths.

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* refactor: Use WriteString instead of Write([]byte) for writing policy file content in test.

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* feat: Refactor `ca-bundle` command to fetch bundles by product string using a configurable HTTP getter with improved error handling, and simplify `attestation_policy` command usage.

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* fix: ignore return value of cmd.Help()

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* feat: Implement CoRIM generation for Azure and GCP attestation policies and add a CLI command to download and verify GCP OVMF files.

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* feat: Upgrade Python virtual environment setup to include setuptools and wheel, append computation ID to Docker container names, and improve test robustness with error assertions and conditional skips for runtime tests.

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* test: Enhance attestation verification tests, including CoRIM integration and specific platform types like Azure SNP, vTPM, TDX, and IGVM.

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* feat: Add comprehensive test cases for `VerifyWithCoRIM` including success and measurement mismatch, and refine reference value validation.

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* feat: Add Azure and TDX attestation verification tests and abstract external service dependencies for improved testability.

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* feat: Add new test cases for Azure measurement extraction, EAT platform types, IGVM measurement stopping, vTPM CoRIM verification, and GCP OVMF download CLI.

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* test: enhance CLI CoRIM generation and ATLS certificate verification tests, and refactor the Azure MAA client to use an interface.

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

---------

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

pkg/attestation/attestation.go

@@ -9,9 +9,9 @@ import (
 	"net/http"
 
 	"github.com/google/go-sev-guest/client"
-	"github.com/google/go-sev-guest/proto/check"
 	tdxcliet "github.com/google/go-tdx-guest/client"
 	"github.com/google/go-tpm/legacy/tpm2"
+	"github.com/veraison/corim/corim"
 )
 
 type PlatformType int
@@ -32,32 +32,6 @@ const (
 
 var AttestationPolicyPath string
 
-type PcrValues struct {
-	Sha256 map[string]string `json:"sha256"`
-	Sha384 map[string]string `json:"sha384"`
-	Sha1   map[string]string `json:"sha1"`
-}
-
-type PcrConfig struct {
-	PCRValues PcrValues `json:"pcr_values"`
-}
-
-// Config represents attestation configuration.
-type Config struct {
-	*check.Config
-	*PcrConfig
-	*EATValidation
-}
-
-// EATValidation contains EAT token validation settings.
-type EATValidation struct {
-	RequireEATFormat   bool     `json:"require_eat_format"`
-	AllowedFormats     []string `json:"allowed_formats"`
-	MaxTokenAgeSeconds int      `json:"max_token_age_seconds"`
-	RequireClaims      []string `json:"require_claims"`
-	VerifySignature    bool     `json:"verify_signature"`
-}
-
 type ccCheck struct {
 	checkFunc func() bool
 	platform  PlatformType
@@ -71,11 +45,7 @@ type Provider interface {
 }
 
 type Verifier interface {
-	VerifyAttestation(report []byte, teeNonce []byte, vTpmNonce []byte) error
-	VerifyEAT(eatToken []byte, teeNonce []byte, vTpmNonce []byte) error
-	VerifTeeAttestation(report []byte, teeNonce []byte) error
-	VerifVTpmAttestation(report []byte, vTpmNonce []byte) error
-	JSONToPolicy(path string) error
+	VerifyWithCoRIM(report []byte, manifest *corim.UnsignedCorim) error
 }
 
 // CCPlatform returns the type of the confidential computing platform.