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// Copyright (C) MongoDB, Inc. 2017-present.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
package options
import (
"go.mongodb.org/mongo-driver/bson/primitive"
)
// EncryptOptions represents options to explicitly encrypt a value.
type EncryptOptions struct {
KeyID *primitive.Binary
KeyAltName *string
Algorithm string
}
// Encrypt creates a new EncryptOptions instance.
func Encrypt() *EncryptOptions {
return &EncryptOptions{}
}
// SetKeyID specifies an _id of a data key. This should be a UUID (a primitive.Binary with subtype 4).
func (e *EncryptOptions) SetKeyID(keyID primitive.Binary) *EncryptOptions {
e.KeyID = &keyID
return e
}
// SetKeyAltName identifies a key vault document by 'keyAltName'.
func (e *EncryptOptions) SetKeyAltName(keyAltName string) *EncryptOptions {
e.KeyAltName = &keyAltName
return e
}
// SetAlgorithm specifies an algorithm to use for encryption. This should be AEAD_AES_256_CBC_HMAC_SHA_512-Deterministic
// or AEAD_AES_256_CBC_HMAC_SHA_512-Random. This is required.
func (e *EncryptOptions) SetAlgorithm(algorithm string) *EncryptOptions {
e.Algorithm = algorithm
return e
}
// MergeEncryptOptions combines the argued EncryptOptions in a last-one wins fashion.
func MergeEncryptOptions(opts ...*EncryptOptions) *EncryptOptions {
eo := Encrypt()
for _, opt := range opts {
if opt == nil {
continue
}
if opt.KeyID != nil {
eo.KeyID = opt.KeyID
}
if opt.KeyAltName != nil {
eo.KeyAltName = opt.KeyAltName
}
if opt.Algorithm != "" {
eo.Algorithm = opt.Algorithm
}
}
return eo
}
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