ReEncryptData.go - AWS Code Sample

ReEncryptData.go

// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. // SPDX-License-Identifier: MIT-0 package main import ( "flag" "fmt" "github.com/aws/aws-sdk-go/aws/session" "github.com/aws/aws-sdk-go/service/kms" "github.com/aws/aws-sdk-go/service/kms/kmsiface" ) // ReEncryptText reencrypts some text using a new AWS Key Management Service (AWS KMS) customer master key (CMK). // Inputs: // svc is an AWS KMS service client // keyID is the ID of a different CMK // Output: // If success, information about the reencrypted text and nil // Otherwise, nil and an error from the call to ReEncrypt func ReEncryptText(svc kmsiface.KMSAPI, blob *[]byte, keyID *string) (*kms.ReEncryptOutput, error) { result, err := svc.ReEncrypt(&kms.ReEncryptInput{ CiphertextBlob: *blob, DestinationKeyId: keyID, }) if err != nil { return nil, err } return result, nil } func main() { keyID := flag.String("k", "", "The ID of a KMS key") data := flag.String("d", "", "The data to reencrypt, as a string") flag.Parse() if *keyID == "" || *data == "" { fmt.Println("You must supply the ID of a KMS key and data") fmt.Println("-k KEY-ID -d DATA") return } sess := session.Must(session.NewSessionWithOptions(session.Options{ SharedConfigState: session.SharedConfigEnable, })) svc := kms.New(sess) blob := []byte(*data) result, err := ReEncryptText(svc, &blob, keyID) if err != nil { fmt.Println("Got error reencrypting data:") fmt.Println(err) return } fmt.Println("Blob (base-64 byte array):") fmt.Println(result.CiphertextBlob) }