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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgo/] [go/] [crypto/] [elliptic/] [elliptic_test.go] - Blame information for rev 860

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Line No. Rev Author Line
1 747 jeremybenn
// Copyright 2010 The Go Authors. All rights reserved.
2
// Use of this source code is governed by a BSD-style
3
// license that can be found in the LICENSE file.
4
 
5
package elliptic
6
 
7
import (
8
        "crypto/rand"
9
        "encoding/hex"
10
        "fmt"
11
        "math/big"
12
        "testing"
13
)
14
 
15
func TestOnCurve(t *testing.T) {
16
        p224 := P224()
17
        if !p224.IsOnCurve(p224.Params().Gx, p224.Params().Gy) {
18
                t.Errorf("FAIL")
19
        }
20
}
21
 
22
type baseMultTest struct {
23
        k    string
24
        x, y string
25
}
26
 
27
var p224BaseMultTests = []baseMultTest{
28
        {
29
                "1",
30
                "b70e0cbd6bb4bf7f321390b94a03c1d356c21122343280d6115c1d21",
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        },
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        {
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                "2",
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149
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164
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172
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        },
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184
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204
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        {
259
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262
        },
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        {
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        {
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        },
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        {
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                "26959946667150639794667015087019625940457807714424391721682722368058",
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        },
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        {
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        },
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        {
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                "26959946667150639794667015087019625940457807714424391721682722368060",
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286
                "42c89c774a08dc04b3dd201932bc8a5ea5f8b89bbb2a7e667aff81cd",
287
        },
288
}
289
 
290
func TestBaseMult(t *testing.T) {
291
        p224 := P224()
292
        for i, e := range p224BaseMultTests {
293
                k, ok := new(big.Int).SetString(e.k, 10)
294
                if !ok {
295
                        t.Errorf("%d: bad value for k: %s", i, e.k)
296
                }
297
                x, y := p224.ScalarBaseMult(k.Bytes())
298
                if fmt.Sprintf("%x", x) != e.x || fmt.Sprintf("%x", y) != e.y {
299
                        t.Errorf("%d: bad output for k=%s: got (%x, %x), want (%s, %s)", i, e.k, x, y, e.x, e.y)
300
                }
301
                if testing.Short() && i > 5 {
302
                        break
303
                }
304
        }
305
}
306
 
307
func TestGenericBaseMult(t *testing.T) {
308
        // We use the P224 CurveParams directly in order to test the generic implementation.
309
        p224 := P224().Params()
310
        for i, e := range p224BaseMultTests {
311
                k, ok := new(big.Int).SetString(e.k, 10)
312
                if !ok {
313
                        t.Errorf("%d: bad value for k: %s", i, e.k)
314
                }
315
                x, y := p224.ScalarBaseMult(k.Bytes())
316
                if fmt.Sprintf("%x", x) != e.x || fmt.Sprintf("%x", y) != e.y {
317
                        t.Errorf("%d: bad output for k=%s: got (%x, %x), want (%s, %s)", i, e.k, x, y, e.x, e.y)
318
                }
319
                if testing.Short() && i > 5 {
320
                        break
321
                }
322
        }
323
}
324
 
325
func BenchmarkBaseMult(b *testing.B) {
326
        b.ResetTimer()
327
        p224 := P224()
328
        e := p224BaseMultTests[25]
329
        k, _ := new(big.Int).SetString(e.k, 10)
330
        b.StartTimer()
331
        for i := 0; i < b.N; i++ {
332
                p224.ScalarBaseMult(k.Bytes())
333
        }
334
}
335
 
336
func TestMarshal(t *testing.T) {
337
        p224 := P224()
338
        _, x, y, err := GenerateKey(p224, rand.Reader)
339
        if err != nil {
340
                t.Error(err)
341
                return
342
        }
343
        serialized := Marshal(p224, x, y)
344
        xx, yy := Unmarshal(p224, serialized)
345
        if xx == nil {
346
                t.Error("failed to unmarshal")
347
                return
348
        }
349
        if xx.Cmp(x) != 0 || yy.Cmp(y) != 0 {
350
                t.Error("unmarshal returned different values")
351
                return
352
        }
353
}
354
 
355
func TestP224Overflow(t *testing.T) {
356
        // This tests for a specific bug in the P224 implementation.
357
        p224 := P224()
358
        pointData, _ := hex.DecodeString("049B535B45FB0A2072398A6831834624C7E32CCFD5A4B933BCEAF77F1DD945E08BBE5178F5EDF5E733388F196D2A631D2E075BB16CBFEEA15B")
359
        x, y := Unmarshal(p224, pointData)
360
        if !p224.IsOnCurve(x, y) {
361
                t.Error("P224 failed to validate a correct point")
362
        }
363
}

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