AWS S3 Encryption with User Keys

gistfile1.txt

function addEncryptionHeaders(encryptionKey) {
  return function(req) {
    const key = Buffer.alloc(32).fill(encryptionKey)
    const key64 = AWS.util.base64.encode(key)
    const keyMD5 = AWS.util.crypto.md5(key.toString(), 'base64')
    req.httpRequest.headers['x-amz-server-side-encryption-customer-algorithm'] = 'AES256'
    req.httpRequest.headers['x-amz-server-side-encryption-customer-key'] = key64
    req.httpRequest.headers['x-amz-server-side-encryption-customer-key-MD5'] = keyMD5
  }
}