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
22 lines
694 B
Go
22 lines
694 B
Go
// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build amd64,!gccgo,!appengine
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package poly1305
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// This function is implemented in sum_amd64.s
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//go:noescape
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func poly1305(out *[16]byte, m *byte, mlen uint64, key *[32]byte)
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// Sum generates an authenticator for m using a one-time key and puts the
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// 16-byte result into out. Authenticating two different messages with the same
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// key allows an attacker to forge messages at will.
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func Sum(out *[16]byte, m []byte, key *[32]byte) {
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var mPtr *byte
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if len(m) > 0 {
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mPtr = &m[0]
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}
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poly1305(out, mPtr, uint64(len(m)), key)
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}
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