micro/config/secrets/secrets.go

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// Package secrets is an interface for encrypting and decrypting secrets
package secrets
import "context"
// Codec encrypts or decrypts arbitrary data. The data should be as small as possible
type Codec interface {
Init(...Option) error
Options() Options
String() string
Decrypt([]byte, ...DecryptOption) ([]byte, error)
Encrypt([]byte, ...EncryptOption) ([]byte, error)
}
// Options is a codec's options
// SecretKey or both PublicKey and PrivateKey should be set depending on the
// underlying implementation
type Options struct {
SecretKey []byte
PrivateKey []byte
PublicKey []byte
Context context.Context
}
// Option sets options
type Option func(*Options)
// SecretKey sets the symmetric secret key
func SecretKey(key []byte) Option {
return func(o *Options) {
o.SecretKey = make([]byte, len(key))
copy(o.SecretKey, key)
}
}
// PublicKey sets the asymmetric Public Key of this codec
func PublicKey(key []byte) Option {
return func(o *Options) {
o.PublicKey = make([]byte, len(key))
copy(o.PublicKey, key)
}
}
// PrivateKey sets the asymmetric Private Key of this codec
func PrivateKey(key []byte) Option {
return func(o *Options) {
o.PrivateKey = make([]byte, len(key))
copy(o.PrivateKey, key)
}
}
// DecryptOptions can be passed to Codec.Decrypt
type DecryptOptions struct {
SenderPublicKey []byte
}
// DecryptOption sets DecryptOptions
type DecryptOption func(*DecryptOptions)
// SenderPublicKey is the Public Key of the Codec that encrypted this message
func SenderPublicKey(key []byte) DecryptOption {
return func(d *DecryptOptions) {
d.SenderPublicKey = make([]byte, len(key))
copy(d.SenderPublicKey, key)
}
}
// EncryptOptions can be passed to Codec.Encrypt
type EncryptOptions struct {
RecipientPublicKey []byte
}
// EncryptOption Sets EncryptOptions
type EncryptOption func(*EncryptOptions)
// RecipientPublicKey is the Public Key of the Codec that will decrypt this message
func RecipientPublicKey(key []byte) EncryptOption {
return func(e *EncryptOptions) {
e.RecipientPublicKey = make([]byte, len(key))
copy(e.RecipientPublicKey, key)
}
}