mirror of
https://github.com/pgsty/minio.git
synced 2026-08-10 16:23:28 +03:00
add SSE-C support for HEAD, GET, PUT (#4894)
This change adds server-side-encryption support for HEAD, GET and PUT
operations. This PR only addresses single-part PUTs and GETs without
HTTP ranges.
Further this change adds the concept of reserved object metadata which is required
to make encrypted objects tamper-proof and provide API compatibility to AWS S3.
This PR adds the following reserved metadata entries:
- X-Minio-Internal-Server-Side-Encryption-Iv ('guarantees' tamper-proof property)
- X-Minio-Internal-Server-Side-Encryption-Kdf (makes Key-MAC computation negotiable in future)
- X-Minio-Internal-Server-Side-Encryption-Key-Mac (provides AWS S3 API compatibility)
The prefix `X-Minio_Internal` specifies an internal metadata entry which must not
send to clients. All client requests containing a metadata key starting with `X-Minio-Internal`
must also rejected. This is implemented by a generic-handler.
This PR implements SSE-C separated from client-side-encryption (CSE). This cannot decrypt
server-side-encrypted objects on the client-side. However, clients can encrypted the same object
with CSE and SSE-C.
This PR does not address:
- SSE-C Copy and Copy part
- SSE-C GET with HTTP ranges
- SSE-C multipart PUT
- SSE-C Gateway
Each point must be addressed in a separate PR.
Added to vendor dir:
- x/crypto/chacha20poly1305
- x/crypto/poly1305
- github.com/minio/sio
This commit is contained in:
Andreas Auernhammer
committed by
Dee Koder
Dee Koder
parent
7e7ae29d89
commit
ca6b4773ed
+199
@@ -0,0 +1,199 @@
|
||||
// Copyright 2016 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// Package ChaCha20 implements the core ChaCha20 function as specified in https://tools.ietf.org/html/rfc7539#section-2.3.
|
||||
package chacha20
|
||||
|
||||
import "encoding/binary"
|
||||
|
||||
const rounds = 20
|
||||
|
||||
// core applies the ChaCha20 core function to 16-byte input in, 32-byte key k,
|
||||
// and 16-byte constant c, and puts the result into 64-byte array out.
|
||||
func core(out *[64]byte, in *[16]byte, k *[32]byte) {
|
||||
j0 := uint32(0x61707865)
|
||||
j1 := uint32(0x3320646e)
|
||||
j2 := uint32(0x79622d32)
|
||||
j3 := uint32(0x6b206574)
|
||||
j4 := binary.LittleEndian.Uint32(k[0:4])
|
||||
j5 := binary.LittleEndian.Uint32(k[4:8])
|
||||
j6 := binary.LittleEndian.Uint32(k[8:12])
|
||||
j7 := binary.LittleEndian.Uint32(k[12:16])
|
||||
j8 := binary.LittleEndian.Uint32(k[16:20])
|
||||
j9 := binary.LittleEndian.Uint32(k[20:24])
|
||||
j10 := binary.LittleEndian.Uint32(k[24:28])
|
||||
j11 := binary.LittleEndian.Uint32(k[28:32])
|
||||
j12 := binary.LittleEndian.Uint32(in[0:4])
|
||||
j13 := binary.LittleEndian.Uint32(in[4:8])
|
||||
j14 := binary.LittleEndian.Uint32(in[8:12])
|
||||
j15 := binary.LittleEndian.Uint32(in[12:16])
|
||||
|
||||
x0, x1, x2, x3, x4, x5, x6, x7 := j0, j1, j2, j3, j4, j5, j6, j7
|
||||
x8, x9, x10, x11, x12, x13, x14, x15 := j8, j9, j10, j11, j12, j13, j14, j15
|
||||
|
||||
for i := 0; i < rounds; i += 2 {
|
||||
x0 += x4
|
||||
x12 ^= x0
|
||||
x12 = (x12 << 16) | (x12 >> (16))
|
||||
x8 += x12
|
||||
x4 ^= x8
|
||||
x4 = (x4 << 12) | (x4 >> (20))
|
||||
x0 += x4
|
||||
x12 ^= x0
|
||||
x12 = (x12 << 8) | (x12 >> (24))
|
||||
x8 += x12
|
||||
x4 ^= x8
|
||||
x4 = (x4 << 7) | (x4 >> (25))
|
||||
x1 += x5
|
||||
x13 ^= x1
|
||||
x13 = (x13 << 16) | (x13 >> 16)
|
||||
x9 += x13
|
||||
x5 ^= x9
|
||||
x5 = (x5 << 12) | (x5 >> 20)
|
||||
x1 += x5
|
||||
x13 ^= x1
|
||||
x13 = (x13 << 8) | (x13 >> 24)
|
||||
x9 += x13
|
||||
x5 ^= x9
|
||||
x5 = (x5 << 7) | (x5 >> 25)
|
||||
x2 += x6
|
||||
x14 ^= x2
|
||||
x14 = (x14 << 16) | (x14 >> 16)
|
||||
x10 += x14
|
||||
x6 ^= x10
|
||||
x6 = (x6 << 12) | (x6 >> 20)
|
||||
x2 += x6
|
||||
x14 ^= x2
|
||||
x14 = (x14 << 8) | (x14 >> 24)
|
||||
x10 += x14
|
||||
x6 ^= x10
|
||||
x6 = (x6 << 7) | (x6 >> 25)
|
||||
x3 += x7
|
||||
x15 ^= x3
|
||||
x15 = (x15 << 16) | (x15 >> 16)
|
||||
x11 += x15
|
||||
x7 ^= x11
|
||||
x7 = (x7 << 12) | (x7 >> 20)
|
||||
x3 += x7
|
||||
x15 ^= x3
|
||||
x15 = (x15 << 8) | (x15 >> 24)
|
||||
x11 += x15
|
||||
x7 ^= x11
|
||||
x7 = (x7 << 7) | (x7 >> 25)
|
||||
x0 += x5
|
||||
x15 ^= x0
|
||||
x15 = (x15 << 16) | (x15 >> 16)
|
||||
x10 += x15
|
||||
x5 ^= x10
|
||||
x5 = (x5 << 12) | (x5 >> 20)
|
||||
x0 += x5
|
||||
x15 ^= x0
|
||||
x15 = (x15 << 8) | (x15 >> 24)
|
||||
x10 += x15
|
||||
x5 ^= x10
|
||||
x5 = (x5 << 7) | (x5 >> 25)
|
||||
x1 += x6
|
||||
x12 ^= x1
|
||||
x12 = (x12 << 16) | (x12 >> 16)
|
||||
x11 += x12
|
||||
x6 ^= x11
|
||||
x6 = (x6 << 12) | (x6 >> 20)
|
||||
x1 += x6
|
||||
x12 ^= x1
|
||||
x12 = (x12 << 8) | (x12 >> 24)
|
||||
x11 += x12
|
||||
x6 ^= x11
|
||||
x6 = (x6 << 7) | (x6 >> 25)
|
||||
x2 += x7
|
||||
x13 ^= x2
|
||||
x13 = (x13 << 16) | (x13 >> 16)
|
||||
x8 += x13
|
||||
x7 ^= x8
|
||||
x7 = (x7 << 12) | (x7 >> 20)
|
||||
x2 += x7
|
||||
x13 ^= x2
|
||||
x13 = (x13 << 8) | (x13 >> 24)
|
||||
x8 += x13
|
||||
x7 ^= x8
|
||||
x7 = (x7 << 7) | (x7 >> 25)
|
||||
x3 += x4
|
||||
x14 ^= x3
|
||||
x14 = (x14 << 16) | (x14 >> 16)
|
||||
x9 += x14
|
||||
x4 ^= x9
|
||||
x4 = (x4 << 12) | (x4 >> 20)
|
||||
x3 += x4
|
||||
x14 ^= x3
|
||||
x14 = (x14 << 8) | (x14 >> 24)
|
||||
x9 += x14
|
||||
x4 ^= x9
|
||||
x4 = (x4 << 7) | (x4 >> 25)
|
||||
}
|
||||
|
||||
x0 += j0
|
||||
x1 += j1
|
||||
x2 += j2
|
||||
x3 += j3
|
||||
x4 += j4
|
||||
x5 += j5
|
||||
x6 += j6
|
||||
x7 += j7
|
||||
x8 += j8
|
||||
x9 += j9
|
||||
x10 += j10
|
||||
x11 += j11
|
||||
x12 += j12
|
||||
x13 += j13
|
||||
x14 += j14
|
||||
x15 += j15
|
||||
|
||||
binary.LittleEndian.PutUint32(out[0:4], x0)
|
||||
binary.LittleEndian.PutUint32(out[4:8], x1)
|
||||
binary.LittleEndian.PutUint32(out[8:12], x2)
|
||||
binary.LittleEndian.PutUint32(out[12:16], x3)
|
||||
binary.LittleEndian.PutUint32(out[16:20], x4)
|
||||
binary.LittleEndian.PutUint32(out[20:24], x5)
|
||||
binary.LittleEndian.PutUint32(out[24:28], x6)
|
||||
binary.LittleEndian.PutUint32(out[28:32], x7)
|
||||
binary.LittleEndian.PutUint32(out[32:36], x8)
|
||||
binary.LittleEndian.PutUint32(out[36:40], x9)
|
||||
binary.LittleEndian.PutUint32(out[40:44], x10)
|
||||
binary.LittleEndian.PutUint32(out[44:48], x11)
|
||||
binary.LittleEndian.PutUint32(out[48:52], x12)
|
||||
binary.LittleEndian.PutUint32(out[52:56], x13)
|
||||
binary.LittleEndian.PutUint32(out[56:60], x14)
|
||||
binary.LittleEndian.PutUint32(out[60:64], x15)
|
||||
}
|
||||
|
||||
// XORKeyStream crypts bytes from in to out using the given key and counters.
|
||||
// In and out may be the same slice but otherwise should not overlap. Counter
|
||||
// contains the raw ChaCha20 counter bytes (i.e. block counter followed by
|
||||
// nonce).
|
||||
func XORKeyStream(out, in []byte, counter *[16]byte, key *[32]byte) {
|
||||
var block [64]byte
|
||||
var counterCopy [16]byte
|
||||
copy(counterCopy[:], counter[:])
|
||||
|
||||
for len(in) >= 64 {
|
||||
core(&block, &counterCopy, key)
|
||||
for i, x := range block {
|
||||
out[i] = in[i] ^ x
|
||||
}
|
||||
u := uint32(1)
|
||||
for i := 0; i < 4; i++ {
|
||||
u += uint32(counterCopy[i])
|
||||
counterCopy[i] = byte(u)
|
||||
u >>= 8
|
||||
}
|
||||
in = in[64:]
|
||||
out = out[64:]
|
||||
}
|
||||
|
||||
if len(in) > 0 {
|
||||
core(&block, &counterCopy, key)
|
||||
for i, v := range in {
|
||||
out[i] = v ^ block[i]
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user