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multi.go
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multi.go
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package encryption
// Copyright (c) Microsoft Corporation.
// Licensed under the Apache License 2.0.
import (
"context"
"github.com/Azure/ARO-RP/pkg/util/keyvault"
)
type multi struct {
sealer AEAD
openers []AEAD
}
var _ AEAD = (*multi)(nil)
func NewMulti(ctx context.Context, serviceKeyvault keyvault.Manager, secretName, legacySecretName string) (AEAD, error) {
key, err := serviceKeyvault.GetBase64Secret(ctx, secretName, "")
if err != nil {
return nil, err
}
aead, err := NewAES256SHA512(ctx, key)
if err != nil {
return nil, err
}
m := &multi{
sealer: aead,
}
for _, x := range []struct {
secretName string
aeadFactory func(context.Context, []byte) (AEAD, error)
}{
{secretName, NewAES256SHA512},
{legacySecretName, NewXChaCha20Poly1305},
} {
keys, err := serviceKeyvault.GetBase64Secrets(ctx, x.secretName)
if err != nil {
return nil, err
}
for _, key := range keys {
aead, err = x.aeadFactory(ctx, key)
if err != nil {
return nil, err
}
m.openers = append(m.openers, aead)
}
}
return m, nil
}
func (c *multi) Open(input []byte) (b []byte, err error) {
for _, opener := range c.openers {
b, err = opener.Open(input)
if err == nil {
return
}
}
return nil, err
}
func (c *multi) Seal(input []byte) ([]byte, error) {
return c.sealer.Seal(input)
}