I can successfully encrypt the value using the following code:
final static Charset ENCODING = StandardCharsets.ISO_8859_1;
var awsCreds = AwsBasicCredentials.create(KEY, SECRET_KEY);
kmsClient = KmsClient.builder().credentialsProvider(StaticCredentialsProvider.create(awsCreds)).region(Region.US_EAST_1).build();
var sdkBytesString = SdkBytes.fromString(stringToEncrypt, ENCODING);
var encryptRequest = EncryptRequest.builder().keyId(KEY_ARN).plaintext(sdkBytesString).build();
var encryptResponse = this.kmsClient.encrypt(encryptRequest);
var result = encryptResponse.ciphertextBlob().asString(ENCODING);
In the result I can see encrypted value.
BUT The problem is that I need this value in UTF8 not ISO_8859_1. When trying to get ciphertextBlob in UTF8 - getting conversion error:
Blockquote java.io.UncheckedIOException: Cannot encode string.
I need to save the string in UTF-8 DB and to send this encrypted string to another service that accepts UTF-8 strings\
Could you please advise how to get UTF-8 string after encryption?