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btcec: Add case to signature serialization test

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It adds the case where the S value of the signature is bigger than the
half of the order of the curve.
This commit is contained in:
Steven Roose 2017-09-21 23:07:44 +02:00 committed by Dave Collins
parent 79445fbd97
commit fb43a179cb
1 changed files with 18 additions and 0 deletions
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18
btcec/signature_test.go
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@ -417,6 +417,24 @@ func TestSignatureSerialize(t *testing.T) {
0x2e, 0xdd, 0xc2, 0x1c, 0x14, 0x15, 0xac,
},
},
{
"valid 4 - s is bigger than half order",
&Signature{
R: fromHex("a196ed0e7ebcbe7b63fe1d8eecbdbde03a67ceba4fc8f6482bdcb9606a911404"),
S: fromHex("971729c7fa944b465b35250c6570a2f31acbb14b13d1565fab7330dcb2b3dfb1"),
},
[]byte{
0x30, 0x45, 0x02, 0x21, 0x00, 0xa1, 0x96, 0xed,
0x0e, 0x7e, 0xbc, 0xbe, 0x7b, 0x63, 0xfe, 0x1d,
0x8e, 0xec, 0xbd, 0xbd, 0xe0, 0x3a, 0x67, 0xce,
0xba, 0x4f, 0xc8, 0xf6, 0x48, 0x2b, 0xdc, 0xb9,
0x60, 0x6a, 0x91, 0x14, 0x04, 0x02, 0x20, 0x68,
0xe8, 0xd6, 0x38, 0x05, 0x6b, 0xb4, 0xb9, 0xa4,
0xca, 0xda, 0xf3, 0x9a, 0x8f, 0x5d, 0x0b, 0x9f,
0xe3, 0x2b, 0x9b, 0x9b, 0x77, 0x49, 0xdc, 0x14,
0x5f, 0x2d, 0xb0, 0x1d, 0x82, 0x61, 0x90,
},
},
{
"zero signature",
&Signature{