Jungho Ahn
4d48e5fa3d
This change adds ARMv6 assembly implementation. The referenced assembly code was the public domain source by Andrew Moon in https://github.com/floodyberry/poly1305-opt/blob/master/app/extensions/poly1305/poly1305_armv6-32.inc. The author has confirmed that it's ok to put it under the Go license. Benchmark results on Raspberry Pi (ARMv6-compatible processor rev 7), o Without ARMv6 assembly Benchmark1K 5000 287177 ns/op 3.57 MB/s Benchmark64 50000 38880 ns/op 1.65 MB/s o With ARMv6 assembly Benchmark1K 100000 15964 ns/op 64.14 MB/s Benchmark64 1000000 1472 ns/op 43.46 MB/s Change-Id: Iea5b0b831ac097cc6d477a8fccbf0ddb4819724c Reviewed-on: https://go-review.googlesource.com/9765 Reviewed-by: Adam Langley <agl@golang.org> Run-TryBot: Adam Langley <agl@golang.org>
25 lines
719 B
Go
25 lines
719 B
Go
// Copyright 2015 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 arm,!gccgo,!appengine
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package poly1305
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// This function is implemented in poly1305_arm.s
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//go:noescape
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func poly1305_auth_armv6(out *[16]byte, m *byte, mlen uint32, 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_auth_armv6(out, mPtr, uint32(len(m)), key)
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}
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