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package org.bouncycastle.crypto.test;
import java.io.IOException;
import java.math.BigInteger;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.x9.ECNamedCurveTable;
import org.bouncycastle.asn1.x9.X9ECParameters;
import org.bouncycastle.crypto.AsymmetricCipherKeyPair;
import org.bouncycastle.crypto.Digest;
import org.bouncycastle.crypto.digests.SHA256Digest;
import org.bouncycastle.crypto.digests.SM3Digest;
import org.bouncycastle.crypto.generators.ECKeyPairGenerator;
import org.bouncycastle.crypto.params.ECDomainParameters;
import org.bouncycastle.crypto.params.ECKeyGenerationParameters;
import org.bouncycastle.crypto.params.ParametersWithID;
import org.bouncycastle.crypto.params.ParametersWithRandom;
import org.bouncycastle.crypto.signers.SM2Signer;
import org.bouncycastle.math.ec.ECConstants;
import org.bouncycastle.math.ec.ECCurve;
import org.bouncycastle.math.ec.ECPoint;
import org.bouncycastle.util.Strings;
import org.bouncycastle.util.test.SimpleTest;
import org.bouncycastle.util.test.TestRandomBigInteger;
public class SM2SignerTest
extends SimpleTest
{
private static final ECDomainParameters PARAMS_FP_DRAFT = createParamsFpDraft();
private static final ECDomainParameters PARAMS_F2M = createParamsF2m();
public String getName()
{
return "SM2Signer";
}
private void doSignerTestFpDraftSM3()
throws Exception
{
doSignerTest(
PARAMS_FP_DRAFT,
new SM3Digest(),
"[email protected]",
"message digest",
"128B2FA8BD433C6C068C8D803DFF79792A519A55171B1B650C23661D15897263",
"6CB28D99385C175C94F94E934817663FC176D925DD72B727260DBAAE1FB2F96F",
"40F1EC59F793D9F49E09DCEF49130D4194F79FB1EED2CAA55BACDB49C4E755D1",
"6FC6DAC32C5D5CF10C77DFB20F7C2EB667A457872FB09EC56327A67EC7DEEBE7"
);
}
private void doSignerTestFpDraftSha256()
throws Exception
{
doSignerTest(
PARAMS_FP_DRAFT,
new SHA256Digest(),
"[email protected]",
"message digest",
"128B2FA8BD433C6C068C8D803DFF79792A519A55171B1B650C23661D15897263",
"6CB28D99385C175C94F94E934817663FC176D925DD72B727260DBAAE1FB2F96F",
"7D62A5EDBDDC8AF4D69C9E37A60D31F5CEFE8727709117E0869648D0A9AE4F57",
"1E5E89718B716AAFC6253443168E4F7CF7E1B7B3934307686CE5947C1BD55EDA"
);
}
private void doSignerTestFpStandardSM3()
throws Exception
{
doSignerTest(
"sm2p256v1",
new SM3Digest(),
"[email protected]",
"hi chappy",
"110E7973206F68C19EE5F7328C036F26911C8C73B4E4F36AE3291097F8984FFC",
"3174C6FFC3C279D2422F3FC0A9F3E574674A4490FE45A5325CAF7D3EC4C8F96C",
"05890B9077B92E47B17A1FF42A814280E556AFD92B4A98B9670BF8B1A274C2FA",
"E3ABBB8DB2B6ECD9B24ECCEA7F679FB9A4B1DB52F4AA985E443AD73237FA1993"
);
}
private void doSignerTestFpStandardSha256()
throws Exception
{
doSignerTest(
"sm2p256v1",
new SHA256Digest(),
"[email protected]",
"hi chappy",
"110E7973206F68C19EE5F7328C036F26911C8C73B4E4F36AE3291097F8984FFC",
"3174C6FFC3C279D2422F3FC0A9F3E574674A4490FE45A5325CAF7D3EC4C8F96C",
"94DA20EA69E4FC70692158BF3D30F87682A4B2F84DF4A4829A1EFC5D9C979D3F",
"EE15AF8D455B728AB80E592FCB654BF5B05620B2F4D25749D263D5C01FAD365F"
);
}
private void doSignerTestFpP256SM3()
throws Exception
{
doSignerTest(
"P-256",
new SM3Digest(),
"[email protected]",
"no backdoors here",
"110E7973206F68C19EE5F7328C036F26911C8C73B4E4F36AE3291097F8984FFC",
"3174C6FFC3C279D2422F3FC0A9F3E574674A4490FE45A5325CAF7D3EC4C8F96C",
"96AA39A0C4A5C454653F394E86386F2E38BE14C57D0E555F3A27A5CEF30E51BD",
"62372BE4AC97DBE725AC0B279BB8FD15883858D814FD792DDB0A401DCC988E70"
);
}
private void doSignerTestFpP256Sha256()
throws Exception
{
doSignerTest(
"P-256",
new SHA256Digest(),
"[email protected]",
"no backdoors here",
"110E7973206F68C19EE5F7328C036F26911C8C73B4E4F36AE3291097F8984FFC",
"3174C6FFC3C279D2422F3FC0A9F3E574674A4490FE45A5325CAF7D3EC4C8F96C",
"503D234A22123D7029271EB9E0D763619A69868DE8296C13EDD4CA32D280CFDE",
"0BDE97699B77268584DDD238DA120095F01130AD2DB37184270F37C02FB2E86B"
);
}
private void doSignerTestF2m()
throws Exception
{
doSignerTest(
PARAMS_F2M,
new SM3Digest(),
"[email protected]",
"message digest",
"771EF3DBFF5F1CDC32B9C572930476191998B2BF7CB981D7F5B39202645F0931",
"36CD79FC8E24B7357A8A7B4A46D454C397703D6498158C605399B341ADA186D6",
"6D3FBA26EAB2A1054F5D198332E335817C8AC453ED26D3391CD4439D825BF25B",
"3124C5688D95F0A10252A9BED033BEC84439DA384621B6D6FAD77F94B74A9556"
);
}
private void doSignerTest(String curveName, Digest d, String ident, String msg, String x, String nonce, String r, String s)
throws Exception
{
X9ECParameters x9 = ECNamedCurveTable.getByName(curveName);
ECDomainParameters domainParams = new ECDomainParameters(x9.getCurve(), x9.getG(), x9.getN(), x9.getH(), x9.getSeed());
doSignerTest(domainParams, d, ident, msg, x, nonce, r, s);
}
private void doSignerTest(ECDomainParameters domainParams, Digest d, String ident, String msg, String x, String nonce, String r, String s)
throws Exception
{
byte[] idBytes = Strings.toByteArray(ident);
byte[] msgBytes = Strings.toByteArray(msg);
AsymmetricCipherKeyPair kp = generateKeyPair(domainParams, x);
SM2Signer signer = new SM2Signer(d);
signer.init(true, new ParametersWithID(
new ParametersWithRandom(kp.getPrivate(), new TestRandomBigInteger(nonce, 16)),
idBytes));
signer.update(msgBytes, 0, msgBytes.length);
byte[] sig = signer.generateSignature();
BigInteger[] rs = decode(sig);
isTrue("r wrong", rs[0].equals(new BigInteger(r, 16)));
isTrue("s wrong", rs[1].equals(new BigInteger(s, 16)));
signer.init(false, new ParametersWithID(kp.getPublic(), idBytes));
signer.update(msgBytes, 0, msgBytes.length);
isTrue("verification failed", signer.verifySignature(sig));
}
private void doVerifyBoundsCheck()
throws IOException
{
ECDomainParameters domainParams = PARAMS_F2M;
AsymmetricCipherKeyPair kp = generateKeyPair(domainParams, "771EF3DBFF5F1CDC32B9C572930476191998B2BF7CB981D7F5B39202645F0931");
SM2Signer signer = new SM2Signer();
signer.init(false, kp.getPublic());
signer.update(new byte[20], 0, 20);
isTrue(!signer.verifySignature(encode(ECConstants.ZERO, ECConstants.EIGHT)));
signer.update(new byte[20], 0, 20);
isTrue(!signer.verifySignature(encode(ECConstants.EIGHT, ECConstants.ZERO)));
signer.update(new byte[20], 0, 20);
isTrue(!signer.verifySignature(encode(domainParams.getN(), ECConstants.EIGHT)));
signer.update(new byte[20], 0, 20);
isTrue(!signer.verifySignature(encode(ECConstants.EIGHT, domainParams.getN())));
}
public void performTest()
throws Exception
{
doSignerTestFpDraftSM3();
doSignerTestFpDraftSha256();
doSignerTestFpStandardSM3();
doSignerTestFpStandardSha256();
doSignerTestFpP256SM3();
doSignerTestFpP256Sha256();
doSignerTestF2m();
doVerifyBoundsCheck();
}
private static ECDomainParameters createParamsFpDraft()
{
BigInteger SM2_ECC_P = new BigInteger("8542D69E4C044F18E8B92435BF6FF7DE457283915C45517D722EDB8B08F1DFC3", 16);
BigInteger SM2_ECC_A = new BigInteger("787968B4FA32C3FD2417842E73BBFEFF2F3C848B6831D7E0EC65228B3937E498", 16);
BigInteger SM2_ECC_B = new BigInteger("63E4C6D3B23B0C849CF84241484BFE48F61D59A5B16BA06E6E12D1DA27C5249A", 16);
BigInteger SM2_ECC_N = new BigInteger("8542D69E4C044F18E8B92435BF6FF7DD297720630485628D5AE74EE7C32E79B7", 16);
BigInteger SM2_ECC_H = ECConstants.ONE;
BigInteger SM2_ECC_GX = new BigInteger("421DEBD61B62EAB6746434EBC3CC315E32220B3BADD50BDC4C4E6C147FEDD43D", 16);
BigInteger SM2_ECC_GY = new BigInteger("0680512BCBB42C07D47349D2153B70C4E5D7FDFCBFA36EA1A85841B9E46E09A2", 16);
ECCurve curve = new ECCurve.Fp(SM2_ECC_P, SM2_ECC_A, SM2_ECC_B, SM2_ECC_N, SM2_ECC_H);
ECPoint g = curve.createPoint(SM2_ECC_GX, SM2_ECC_GY);
return new ECDomainParameters(curve, g, SM2_ECC_N, SM2_ECC_H);
}
private static ECDomainParameters createParamsF2m()
{
BigInteger SM2_ECC_A = new BigInteger("00", 16);
BigInteger SM2_ECC_B = new BigInteger("E78BCD09746C202378A7E72B12BCE00266B9627ECB0B5A25367AD1AD4CC6242B", 16);
BigInteger SM2_ECC_N = new BigInteger("7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFBC972CF7E6B6F900945B3C6A0CF6161D", 16);
BigInteger SM2_ECC_H = BigInteger.valueOf(4);
BigInteger SM2_ECC_GX = new BigInteger("00CDB9CA7F1E6B0441F658343F4B10297C0EF9B6491082400A62E7A7485735FADD", 16);
BigInteger SM2_ECC_GY = new BigInteger("013DE74DA65951C4D76DC89220D5F7777A611B1C38BAE260B175951DC8060C2B3E", 16);
ECCurve curve = new ECCurve.F2m(257, 12, SM2_ECC_A, SM2_ECC_B, SM2_ECC_N, SM2_ECC_H);
ECPoint g = curve.createPoint(SM2_ECC_GX, SM2_ECC_GY);
return new ECDomainParameters(curve, g, SM2_ECC_N, SM2_ECC_H);
}
private static BigInteger[] decode(byte[] sig)
{
ASN1Sequence s = ASN1Sequence.getInstance(sig);
return new BigInteger[] {
decodeValue(s.getObjectAt(0)),
decodeValue(s.getObjectAt(1)) };
}
private static BigInteger decodeValue(ASN1Encodable e)
{
return ASN1Integer.getInstance(e).getValue();
}
private static byte[] encode(BigInteger r, BigInteger s)
throws IOException
{
return new DERSequence(new ASN1Encodable[] { new ASN1Integer(r), new ASN1Integer(s)}).getEncoded();
}
private static AsymmetricCipherKeyPair generateKeyPair(ECDomainParameters domainParams, String x)
{
ECKeyPairGenerator kpg = new ECKeyPairGenerator();
kpg.init(new ECKeyGenerationParameters(domainParams, new TestRandomBigInteger(x, 16)));
return kpg.generateKeyPair();
}
public static void main(String[] args)
{
runTest(new SM2SignerTest());
}
}