Paul E. Murphy
b61b08db44
This requires fixing an incorrect save of the counter. It is a word value. It happens to work on LE because length is limited to u32. Refactor the constant table to load correctly independent of byte ordering. Add byte order swapping where output needs converted to LE ordering for storage. Change-Id: Ic7e09bd1c769bb77dd6e817f5a8639ba765f4c0f Reviewed-on: https://go-review.googlesource.com/c/crypto/+/614297 Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Michael Knyszek <mknyszek@google.com> Reviewed-by: Archana Ravindar <aravinda@redhat.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
17 lines
469 B
Go
17 lines
469 B
Go
// Copyright 2019 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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//go:build gc && !purego && (ppc64 || ppc64le)
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package chacha20
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const bufSize = 256
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//go:noescape
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func chaCha20_ctr32_vsx(out, inp *byte, len int, key *[8]uint32, counter *uint32)
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func (c *Cipher) xorKeyStreamBlocks(dst, src []byte) {
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chaCha20_ctr32_vsx(&dst[0], &src[0], len(src), &c.key, &c.counter)
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}
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