storj/satellite/console/consolewasm/access.go

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// Copyright (C) 2020 Storj Labs, Inc.
// See LICENSE for copying information.
package consolewasm
import (
"crypto/sha256"
"storj.io/common/encryption"
"storj.io/common/grant"
"storj.io/common/macaroon"
"storj.io/common/storj"
"storj.io/common/uuid"
)
// GenAccessGrant creates a new access grant and returns it serialized form.
func GenAccessGrant(satelliteNodeURL, apiKey, encryptionPassphrase, projectID string) (string, error) {
parsedAPIKey, err := macaroon.ParseAPIKey(apiKey)
if err != nil {
return "", err
}
key, err := DeriveRootKey(encryptionPassphrase, projectID)
if err != nil {
return "", err
}
encAccess := grant.NewEncryptionAccessWithDefaultKey(key)
encAccess.SetDefaultPathCipher(storj.EncAESGCM)
encAccess.LimitTo(parsedAPIKey)
accessString, err := (&grant.Access{
SatelliteAddress: satelliteNodeURL,
APIKey: parsedAPIKey,
EncAccess: encAccess,
}).Serialize()
if err != nil {
return "", err
}
return accessString, nil
}
// DeriveRootKey derives the root key portion of the access grant.
func DeriveRootKey(encryptionPassphrase, projectID string) (*storj.Key, error) {
id, err := uuid.FromString(projectID)
if err != nil {
return nil, err
}
const concurrency = 8
salt := sha256.Sum256(id[:])
return encryption.DeriveRootKey([]byte(encryptionPassphrase), salt[:], "", concurrency)
}