package rsa_test

import (
	"crypto"
	"crypto/aes"
	"crypto/cipher"
	"crypto/rand"
	"crypto/rsa"
	"crypto/sha256"
	"encoding/hex"
	"fmt"
	"os"
)

// RSA is able to encrypt only a very limited amount of data. In order
// to encrypt reasonable amounts of data a hybrid scheme is commonly
// used: RSA is used to encrypt a key for a symmetric primitive like
// AES-GCM.
//

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package cipher

import (
	"crypto/internal/alias"
	"crypto/subtle"
	"errors"
	"internal/byteorder"
)

// AEAD is a cipher mode providing authenticated encryption with associated
// data. For a description of the methodology, see
// https://en.wikipedia.org/wiki/Authenticated_encryption.
type AEAD interface {

/*
EncryptionConfiguration stores the complete configuration for encryption providers.
It also allows the use of wildcards to specify the resources that should be encrypted.
Use '*.<group>' to encrypt all resources within a group or '*.*' to encrypt all resources.
'*.' can be used to encrypt all resource in the core group.  '*.*' will encrypt all
resources, even custom resources that are added after API server start.

* Nginx
* HAProxy

## Let's Encrypt

Before Let's Encrypt, these **HTTPS certificates** were sold by trusted third parties.

The process to acquire one of these certificates used to be cumbersome, require quite some paperwork and the certificates were quite expensive.

But then **<a href="https://letsencrypt.org/" class="external-link" target="_blank">Let's Encrypt</a>** was created.

// using a given key. It provides the capability to encrypt
// or decrypt individual blocks. The mode implementations
// extend that capability to streams of blocks.
type Block interface {
	// BlockSize returns the cipher's block size.
	BlockSize() int

	// Encrypt encrypts the first block in src into dst.
	// Dst and src must overlap entirely or not at all.
	Encrypt(dst, src []byte)

sleep 10

./mc stat sitea/bucket/new-test-encrypted-object
./mc stat siteb/bucket/new-test-encrypted-object
./mc stat sitec/bucket/new-test-encrypted-object

./mc ls -r sitea/bucket/
./mc ls -r siteb/bucket/
./mc ls -r sitec/bucket/

}

func (c *desCipher) BlockSize() int { return BlockSize }

func (c *desCipher) Encrypt(dst, src []byte) {
	if len(src) < BlockSize {
		panic("crypto/des: input not full block")
	}
	if len(dst) < BlockSize {
		panic("crypto/des: output not full block")
	}
	if alias.InexactOverlap(dst[:BlockSize], src[:BlockSize]) {
		panic("crypto/des: invalid buffer overlap")
	}
	cryptBlock(c.subkeys[:], dst, src, false)
}

## FAQ

> Why is this change needed?

Before, there were two separate mechanisms - S3 objects got encrypted using a KMS,
if present, and the IAM / configuration data got encrypted with the root credentials.
Now, MinIO encrypts IAM / configuration and S3 objects with a KMS, if present. This

	"github.com/minio/minio/internal/logger"
	"github.com/minio/mux"
	"github.com/minio/pkg/v3/policy"
)

const (
	// Bucket Encryption configuration file name.
	bucketSSEConfig = "bucket-encryption.xml"
)

// PutBucketEncryptionHandler - Stores given bucket encryption configuration
// https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutBucketEncryption.html

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package crypto_test

import (
	"crypto/aes"
	"crypto/cipher"
	"crypto/rc4"
	"testing"
)

func TestRC4OutOfBoundsWrite(t *testing.T) {
	// This cipherText is encrypted "0123456789"
	cipherText := []byte{238, 41, 187, 114, 151, 2, 107, 13, 178, 63}
	cipher, err := rc4.NewCipher([]byte{0})
	if err != nil {
		panic(err)