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hdkeychain: Add child key with leading zeros test.

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This adds a modification of a new test vector added to BIP32 which tests
for the case of a child key with leading zeros.  It was modified to
ensure it tests the intended condition with the new hash function Decred
uses.
This commit is contained in:
Dave Collins 2020-04-04 16:15:46 -05:00
parent 2f2a729db6
commit c8468e90b9
No known key found for this signature in database
GPG Key ID: B8904D9D9C93D1F2
1 changed files with 33 additions and 0 deletions
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33
hdkeychain/extendedkey_test.go
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@ -64,8 +64,15 @@ func mockTestNetParams() *mockNetParams {
// derivation works as intended.
func TestBIP0032Vectors(t *testing.T) {
// The master seeds for each of the two test vectors in [BIP32].
//
// Note that the 3rd seed has been changed to ensure the condition it is
// intended to test applies with the modified hash function used in Decred.
//
// In particular, it results in hardened child 0 of the master key having
// a child key with leading zeroes.
testVec1MasterHex := "000102030405060708090a0b0c0d0e0f"
testVec2MasterHex := "fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542"
testVec3MasterHex := "4b381541583be4423346c643850da4b320e46a87ae3d2a4e6da11eba819cd4acba45d239319ac14f863b8d5ab5a0d0c64d2e8a1e7d1457df2e5a3c5100005930"
hkStart := uint32(0x80000000)
mainNetParams := mockMainNetParams()
@ -178,6 +185,32 @@ func TestBIP0032Vectors(t *testing.T) {
net: mainNetParams,
},
// Test vector 3
{
name: "test vector 3 chain m",
master: testVec3MasterHex,
path: []uint32{},
wantPub: "dpubZ9169KDAEUnynpjjLH5vXBfmaBym5MB4HsyZ4ZbsXtJh8DyFVRP8ucKKgNTNSyUZZC93dnJX5eSZxeURPmzHpnBDBieisUbaMJteHNHJpPK",
wantPriv: "dprv3hCznBesA6jBtQqy5m2ZzxsWxBRVeQaz6LMEKefWXoi4QfwccU3Xq2oJXgCZvgKQtRXKdgvkyt35PMhyavDyy95dTc1xjbMGd7vJ61LQan8",
net: mainNetParams,
},
{
name: "test vector 3 chain m/0H",
master: testVec3MasterHex,
path: []uint32{hkStart},
wantPub: "dpubZB4aNJNxjimmDnmC3ZCo7zmSW9ue8i6fRMwpwyHzi15X7j2KHXWSDiPr4ymhbQWg6D3HAjSnqSG3PHDaLVAkUCuRU5ohX9y9z6KL768vYm6",
wantPriv: "dprv3jGV1ApffLhyKNsRo39SbmyBt9MNhmWbDpKWD4MdhvUtQAzgQaAq98spvFaUmYyNJSPGLJ9JzgVDNN9bQP62tUpLwVigWZMjXmojbERDmhk",
net: mainNetParams,
},
{
name: "test vector 3 chain m/0H/0H",
master: testVec3MasterHex,
path: []uint32{hkStart, hkStart},
wantPub: "dpubZESpio8DE1w5E9h5cBwuER5dmfcqZzh19UTstEDJMTfTAbWPJQ8mCFKeqyVgTFL5n4VmrUgbidcH1FmJaPLEWcdyizsdHocfyJTn8Zw8tkB",
wantPriv: "dprv3nejMfZv9dsHKjoKMftYiCHP9f4a946vwvqZ9KGwMP4pT3UkRSoA7fodhGCqPVBqgC2wijajQYW9ZQKNMdZ7Ac2L5i7xqHcq4tPzcxzAxhf",
net: mainNetParams,
},
// Test vector 1 - Testnet
{
name: "test vector 1 chain m - testnet",