Adam Langley
1265e0190f
This change updates the Poly1305 code in x/crypto to reflect some comments from the review of https://go-review.googlesource.com/cl/29245/. Following this change, poly1305_arm.s will be renamed to sum_arm.s, to match the other files here. (The review becomes confusing if that's done in the same change as the asmfmt changes.) Change-Id: Iddf43615eba97c975adb135aef3a814a37e9ec02 Reviewed-on: https://go-review.googlesource.com/30820 Run-TryBot: Adam Langley <agl@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Michael Munday <munday@ca.ibm.com>
23 lines
723 B
Go
23 lines
723 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,!nacl
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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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