mirror of https://github.com/dapr/kit.git
56 lines
1.8 KiB
Go
56 lines
1.8 KiB
Go
/*
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Copyright 2023 The Dapr Authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package v1
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import (
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"errors"
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"fmt"
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)
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// Manifest contains the properties for the clear-text manifest which is added at the beginning of the encrypted document.
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type Manifest struct {
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// Name of the key that can be used to decrypt the message.
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// This is optional, and if specified can be in the format `key` or `key/version`.
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KeyName string `json:"k,omitempty"`
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// ID of the wrapping algorithm used.
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KeyWrappingAlgorithm KeyAlgorithm `json:"kw"`
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// The Wrapped File Key.
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WFK []byte `json:"wfk"`
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// ID of the cipher used.
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Cipher Cipher `json:"cph"`
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// Random sequence of 7 bytes generated by a CSPRNG
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NoncePrefix []byte `json:"np"`
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}
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// Validate the object and returns no error if everything is fine.
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// It also resolves aliases for the key algorithm and cipher.
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func (m *Manifest) Validate() (err error) {
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m.KeyWrappingAlgorithm, err = m.KeyWrappingAlgorithm.Validate()
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if err != nil {
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return fmt.Errorf("key wrapping algorithm is invalid: %w", err)
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}
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if len(m.WFK) == 0 {
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return errors.New("wrapped file key is empty")
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}
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m.Cipher, err = m.Cipher.Validate()
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if err != nil {
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return fmt.Errorf("cipher is invalid: %w", err)
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}
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if len(m.NoncePrefix) != NoncePrefixLength {
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return errors.New("nonce prefix is invalid")
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}
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return nil
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}
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