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Implement ASN.1 key export. Patch from Thilo Planz.

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Resolves issue 8.
This commit is contained in:
Mike Hearn
2011-03-31 20:38:33 +00:00
parent a95949626e
commit 062f87553a
3 changed files with 62 additions and 16 deletions
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27
tests/com/google/bitcoin/core/ECKeyTest.java
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@@ -42,15 +42,24 @@ public class ECKeyTest {
}
@Test
public void testASNDecode() {
byte[] privkeyASN1 = Hex.decode("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");
ECKey key = ECKey.fromASN1(privkeyASN1);
byte[] message = reverseBytes(Hex.decode("11da3761e86431e4a54c176789e41f1651b324d240d599a7067bee23d328ec2a"));
byte[] output = key.sign(message);
assertTrue(key.verify(message, output));
public void testASN1Roundtrip() {
byte[] privkeyASN1 = Hex.decode(
"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");
ECKey decodedKey = ECKey.fromASN1(privkeyASN1);
output = Hex.decode
("304502206faa2ebc614bf4a0b31f0ce4ed9012eb193302ec2bcaccc7ae8bb40577f47549022100c73a1a1acc209f3f860bf9b9f5e13e9433db6f8b7bd527a088a0e0cd0a4c83e9");
assertTrue(key.verify(message, output));
// Now re-encode and decode the ASN.1 to see if it is equivalent (it does not produce the exact same byte
// sequence, some integers are padded now).
ECKey roundtripKey = ECKey.fromASN1(decodedKey.toASN1());
for (ECKey key : new ECKey[] {decodedKey, roundtripKey}) {
byte[] message = reverseBytes(Hex.decode(
"11da3761e86431e4a54c176789e41f1651b324d240d599a7067bee23d328ec2a"));
byte[] output = key.sign(message);
assertTrue(key.verify(message, output));
output = Hex.decode(
"304502206faa2ebc614bf4a0b31f0ce4ed9012eb193302ec2bcaccc7ae8bb40577f47549022100c73a1a1acc209f3f860bf9b9f5e13e9433db6f8b7bd527a088a0e0cd0a4c83e9");
assertTrue(key.verify(message, output));
}
}
}