storj/satellite/console/consolewasm/access.go

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// Copyright (C) 2020 Storj Labs, Inc.
// See LICENSE for copying information.
package consolewasm
import (
"encoding/base64"
"storj.io/common/encryption"
"storj.io/common/grant"
"storj.io/common/macaroon"
"storj.io/common/storj"
)
// GenAccessGrant creates a new access grant and returns it serialized form.
func GenAccessGrant(satelliteNodeURL, apiKey, encryptionPassphrase, base64EncodedSalt string) (string, error) {
parsedAPIKey, err := macaroon.ParseAPIKey(apiKey)
if err != nil {
return "", err
}
key, err := DeriveRootKey(encryptionPassphrase, base64EncodedSalt)
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, base64EncodedSalt string) (*storj.Key, error) {
const concurrency = 8
saltBytes, err := base64.StdEncoding.DecodeString(base64EncodedSalt)
if err != nil {
return nil, err
}
return encryption.DeriveRootKey([]byte(encryptionPassphrase), saltBytes, "", concurrency)
}