diff options
Diffstat (limited to 'vendor/golang.org/x/crypto/salsa20/salsa20_test.go')
-rw-r--r-- | vendor/golang.org/x/crypto/salsa20/salsa20_test.go | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/vendor/golang.org/x/crypto/salsa20/salsa20_test.go b/vendor/golang.org/x/crypto/salsa20/salsa20_test.go new file mode 100644 index 000000000..0ef3328eb --- /dev/null +++ b/vendor/golang.org/x/crypto/salsa20/salsa20_test.go @@ -0,0 +1,139 @@ +// Copyright 2012 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 salsa20 + +import ( + "bytes" + "encoding/hex" + "testing" +) + +func fromHex(s string) []byte { + ret, err := hex.DecodeString(s) + if err != nil { + panic(err) + } + return ret +} + +// testVectors was taken from set 6 of the ECRYPT test vectors: +// http://www.ecrypt.eu.org/stream/svn/viewcvs.cgi/ecrypt/trunk/submissions/salsa20/full/verified.test-vectors?logsort=rev&rev=210&view=markup +var testVectors = []struct { + key []byte + iv []byte + numBytes int + xor []byte +}{ + { + fromHex("0053A6F94C9FF24598EB3E91E4378ADD3083D6297CCF2275C81B6EC11467BA0D"), + fromHex("0D74DB42A91077DE"), + 131072, + fromHex("C349B6A51A3EC9B712EAED3F90D8BCEE69B7628645F251A996F55260C62EF31FD6C6B0AEA94E136C9D984AD2DF3578F78E457527B03A0450580DD874F63B1AB9"), + }, + { + fromHex("0558ABFE51A4F74A9DF04396E93C8FE23588DB2E81D4277ACD2073C6196CBF12"), + fromHex("167DE44BB21980E7"), + 131072, + fromHex("C3EAAF32836BACE32D04E1124231EF47E101367D6305413A0EEB07C60698A2876E4D031870A739D6FFDDD208597AFF0A47AC17EDB0167DD67EBA84F1883D4DFD"), + }, + { + fromHex("0A5DB00356A9FC4FA2F5489BEE4194E73A8DE03386D92C7FD22578CB1E71C417"), + fromHex("1F86ED54BB2289F0"), + 131072, + fromHex("3CD23C3DC90201ACC0CF49B440B6C417F0DC8D8410A716D5314C059E14B1A8D9A9FB8EA3D9C8DAE12B21402F674AA95C67B1FC514E994C9D3F3A6E41DFF5BBA6"), + }, + { + fromHex("0F62B5085BAE0154A7FA4DA0F34699EC3F92E5388BDE3184D72A7DD02376C91C"), + fromHex("288FF65DC42B92F9"), + 131072, + fromHex("E00EBCCD70D69152725F9987982178A2E2E139C7BCBE04CA8A0E99E318D9AB76F988C8549F75ADD790BA4F81C176DA653C1A043F11A958E169B6D2319F4EEC1A"), + }, +} + +func TestSalsa20(t *testing.T) { + var inBuf, outBuf []byte + var key [32]byte + + for i, test := range testVectors { + if test.numBytes%64 != 0 { + t.Errorf("#%d: numBytes is not a multiple of 64", i) + continue + } + + if test.numBytes > len(inBuf) { + inBuf = make([]byte, test.numBytes) + outBuf = make([]byte, test.numBytes) + } + in := inBuf[:test.numBytes] + out := outBuf[:test.numBytes] + copy(key[:], test.key) + XORKeyStream(out, in, test.iv, &key) + + var xor [64]byte + for len(out) > 0 { + for i := 0; i < 64; i++ { + xor[i] ^= out[i] + } + out = out[64:] + } + + if !bytes.Equal(xor[:], test.xor) { + t.Errorf("#%d: bad result", i) + } + } +} + +var xSalsa20TestData = []struct { + in, nonce, key, out []byte +}{ + { + []byte("Hello world!"), + []byte("24-byte nonce for xsalsa"), + []byte("this is 32-byte key for xsalsa20"), + []byte{0x00, 0x2d, 0x45, 0x13, 0x84, 0x3f, 0xc2, 0x40, 0xc4, 0x01, 0xe5, 0x41}, + }, + { + make([]byte, 64), + []byte("24-byte nonce for xsalsa"), + []byte("this is 32-byte key for xsalsa20"), + []byte{0x48, 0x48, 0x29, 0x7f, 0xeb, 0x1f, 0xb5, 0x2f, 0xb6, + 0x6d, 0x81, 0x60, 0x9b, 0xd5, 0x47, 0xfa, 0xbc, 0xbe, 0x70, + 0x26, 0xed, 0xc8, 0xb5, 0xe5, 0xe4, 0x49, 0xd0, 0x88, 0xbf, + 0xa6, 0x9c, 0x08, 0x8f, 0x5d, 0x8d, 0xa1, 0xd7, 0x91, 0x26, + 0x7c, 0x2c, 0x19, 0x5a, 0x7f, 0x8c, 0xae, 0x9c, 0x4b, 0x40, + 0x50, 0xd0, 0x8c, 0xe6, 0xd3, 0xa1, 0x51, 0xec, 0x26, 0x5f, + 0x3a, 0x58, 0xe4, 0x76, 0x48}, + }, +} + +func TestXSalsa20(t *testing.T) { + var key [32]byte + + for i, test := range xSalsa20TestData { + out := make([]byte, len(test.in)) + copy(key[:], test.key) + XORKeyStream(out, test.in, test.nonce, &key) + if !bytes.Equal(out, test.out) { + t.Errorf("%d: expected %x, got %x", i, test.out, out) + } + } +} + +var ( + keyArray [32]byte + key = &keyArray + nonce [8]byte + msg = make([]byte, 1<<10) +) + +func BenchmarkXOR1K(b *testing.B) { + b.StopTimer() + out := make([]byte, 1024) + b.StartTimer() + for i := 0; i < b.N; i++ { + XORKeyStream(out, msg[:1024], nonce[:], key) + } + b.SetBytes(1024) +} |