ECDSA HNP

示例题干:
from hashlib import *
from secrets import randbelow
from ecdsa import SigningKey, SECP160r1, util

leak = 3
total = 61
mask = (1 << leak) - 1

def main():
    sk = SigningKey.generate(curve=SECP160r1)
    vk = sk.verifying_key
    q = SECP160r1.order
    print(hex(vk.pubkey.point.x()))
    print(hex(vk.pubkey.point.y()))
    d = sk.privkey.secret_multiplier
    flag = "DesCTF{" + md5(str(d).encode()).hexdigest() + "}"
    for i in range(total):
        msg = f"msg-{i}".encode()
        digest = sha1(msg).digest()
        h = int.from_bytes(digest, "big") % q
        k = randbelow(q - 1) + 1
        sig = sk.sign_digest(digest, sigencode=util.sigencode_string, k=k)
        r, s = util.sigdecode_string(sig, q)
        print(f"({hex(h)}, {hex(int(r))}, {hex(int(s))}, {hex(k & mask)}),")


if __name__ == "__main__":
    main()
"""
0x8e0a0071e8cf437efec4233ff8444a4ff8adba2f
0xa869fce702b70799c443b450a4d41cc4f65b3eee
(0x525931a9ff8ef95025939a57275ecedc2730421f, 0x5288ed7146c188ebda9b6c8909726c3d6f957891, 0x334c301c2d861fa8cceecabc542a5cb7dd7df7d9, 0x6),
(0x4b21047e1112dbfee487b4f23471f2fb438e268, 0x82878368ef18996109bf10adae81e1acaeb9fa25, 0xd4d9ec1faa9534a3fa4ff0fe78488ebf175cdfec, 0x4),
(0xdd2e98102508e178fdf1e289ac8342250da6408f, 0x38069b3213a57a077a38938d082a7590d0a21b95, 0xcff1f76af8f15422bb288c8af372332cc6ace970, 0x1),
(0xecb8547ea2a68788665e01a7025093c47f2b45de, 0x6f7155ce9da5434227e48554a0bef7d7492cadb, 0x53f6e1a52554436620b392dea75738b5f670d2b2, 0x2),
(0xefb887600edf8d279f3cca868ef641e9284ae769, 0x9caea57dd4681d1ab53029cf631a47277386bc72, 0xce7743df557c732daff4595d8430ea8485ab3aca, 0x3),
(0x957ec8b7a53dea95d53a5c94d595b834c2be61ca, 0x1b24031194de7dac370a2f7c9be316dc14cbe3f2, 0xc40b5c4c674d1f4cb99891bf342f8acebca9258b, 0x5),
(0x8ba1946c16b7c8d98c6e01836ae0d791ecae07d9, 0x6daec7923c03c56a18d764d9497c39871912fb1a, 0x717b2cf60cc5416eb3f1666e79f30d538f5c9038, 0x5),
(0x72337b25f3486e8518d8f3a4da21724cf3977246, 0xff88c0ddcdcdfb98ca50b68c035434ee2e81cd1d, 0x748e1c374d1efdcb3b9bd7b3c812213ddc1ab940, 0x4),
(0xa71275186b7bbc9747c5831b1e4c75f1bd3eae7a, 0x43b995ded8fddfa6365a51d547456376c8f79b88, 0x6c9a0e390dc7d40900f412313dfe0deb8a5cbb45, 0x6),
(0x926bff0ea87d5c1e8c9da39ceb01a10d1b3c0709, 0xaeb5012cbaf479dd3c2d297ba3a80d344ab22f57, 0xa3eff29dffaed0371d860e291c8f65eb287918ce, 0x3),
(0xdc9e51d365f8a827988cf70c4913d987343dc74a, 0xa6940f2d3f38d0d4b20c36b24f4f91b5bdee59c1, 0xb3a7373eeaf10e449aca7e3cc00f6f554ff0473f, 0x4),
(0x2bcbef8732ab1e591dff595cb1c979f90ebadf0c, 0x3b629a50ab44f67f762dff710653c1fa995863c1, 0x7425a16af106e5eba3a0f751baba95708ead3c0, 0x1),
(0x6a0eadeed0b9e7e900df27d5e253968c30f0f6bd, 0x47e22a97f4dfee66b8b04983bbfbfe0374fa917d, 0xfadb3f2a5b347b9fa8cfdaeddecb1215f19ec707, 0x7),
(0x884675226091712e22a0fbf1fa3c0de95fa09dae, 0x6549eabd7fd5bc6832e2ab061fb02d0f1df6b19a, 0xb660a3baf9d96985c3b8d420259003b8fc0a4410, 0x2),
(0x2a81e382054ed9523f5e4d2a966252b51046325d, 0x81f663abbd508d6df460a1d5a857829834a969ac, 0xe51bcf400dd3fddb5b9f13fd0403b3af011f9fc6, 0x4),
(0x25f6147e13fc52aaf92b1622134c52dff9ec282d, 0x76e457adf428f8a1a82711584e336c0b3b70e94e, 0x6af1ced8354c4bdf84fc55fef847848d4dad83e6, 0x3),
(0xfe0eba650a95051d8fa04f43824d465fdad34493, 0xadd5339288e5527a394a602a2f4e891dbdf8d7aa, 0x169a5d1b893fa66e35ec2620bc96f73d067c9460, 0x3),
(0xb8914a5d41cdd7ff1f0eed7e6eab2e79fabfde5b, 0xf6673ed83fe9731508921bfc12773a19980e5345, 0x83710a069298113cfc91d716a38e1584b2606033, 0x5),
(0xae25b8812cc4f7fec5a14f4174328be0a254cc26, 0x16381c71aa45674488d8b1a10ff0a16d4fd6c997, 0xa947337c2f9d0efe9e69f3a5332c7d0887937643, 0x0),
(0xd8bc55b669d86fe42448a83063aea36251b5fe75, 0x8050afa80843f0162c7fa5323cf19f4f194f90ec, 0x9207917cde2804eb97708cb3392610f716e8c5c, 0x4),
(0xabf778fe7279f34fe6f883d56b938ec46bafb21, 0xf1e96791da0ebc0981eb60fae9509f3c973d5df7, 0xf3f07a604cde6a2164601357cfde0c4b2200fb44, 0x5),
(0x8bbc50d04d2841668fc639c0a0f5ae2cd9f13e03, 0xfa4107e471bd396a25b3853ec09a56c49343cfa3, 0xaf2d6a8142fcf028ce8aabc31377c6d7c63bc9c3, 0x7),
(0xd3db7034072a88a03f7a632fdc3f5a07846c79c3, 0x463871a92ceba68a12ab4d02759ff1aec24c9355, 0xc61b3931ecf8330d4b26b9175efa8690161d25b4, 0x4),
(0x5d5672957260b5794e305ee24bccc07f8dd34d94, 0x7c27bdada7014240c904d42c5a1a1e5f38ea9826, 0x779a7fcc0582e3d901494a98b8d9aa1b8d5f5840, 0x7),
(0x1d197eefd0a6c59ea8f3cfc69c066ce92d7f6e96, 0x665a2ba8a286880c09e2c9ea9adb7479d5bc123d, 0x6377c18c0cf75070627ef9613af864be815eeed6, 0x4),
(0x9c7975f4b345048f7e2d3614d5fdcf162be0d920, 0xf2142d01b4b7c2a5585c8458366c716729ee3329, 0x1dd8903dafda53bfe000f606bceee5b31816f683, 0x7),
(0x5062cb7d6e3b50df1820f5996962b5b8b1fc4617, 0xaa47856eecf23e8ef0f212ed3a978f4d5564d650, 0xa02ffbb157a74b3f105895cbe487c6e1da411070, 0x0),
(0xcdfcb6ff93ca01a2755c0c8f0ad8ee04118e1b9e, 0x1fdc78b5968fbd65351406a0e7cb6f45d9f26a01, 0xcec3c44ec773a31fd3785a998e3526624a504705, 0x3),
(0x65fc356da2a36d35d88c5c5792661d8fe152821c, 0x20a49731ddf37504876ed4303cf8ee52426abbbe, 0xf974613f265ced476f0ad2548eecffcf4b648a9e, 0x7),
(0x59544b829fa1f696558ea62792b85e114e397433, 0x23645dd35469fd873a73db34f1018f08ae7f2c24, 0xe5a23255d9760df1f8d6c8ce1652e0480beb0b7d, 0x2),
(0x8ef11fdbed1a2f64faca70aea2cac44dadd8c14c, 0x640d24c485e9e04b9af2355c07cf7ad430c7ca58, 0x20f0e050124bd754c13b8c2e86dbebaee2132bec, 0x1),
(0x1b5ac91240f6450de7fc5208f0762501790e28b7, 0x7991d2db2512b6463c201f0523ed863ce2a670e8, 0xebf64515f997f18b726cd11a24276ef26505a409, 0x6),
(0xba35a8c66a894fae013ac56c9d6ba538d8cbcf0b, 0xcea24619e5bdd3418da925e3aebd5a3c6f64ef03, 0xb9216f67fe0aa26e374b92ecf4b0c8545522785e, 0x0),
(0xe4e86fdd765bc4d98bc807e3f56ad2f2ef8dbd15, 0x67a9d34b95c25764e1026fd64a0cdadc4f894ef, 0x57f0a006eb1ddbae5b7aaaa3e5a2740c1401c9e2, 0x6),
(0xe582d66c85dda020da90ce0248057e9dff2a0120, 0x8f261523dad715ddc7c992972d8cdab39a0e8920, 0x2bcd65226ab00e4e1117a90b735ea287a921641a, 0x2),
(0x62ac7d9437e54969456ae056289adeaefaccd6bb, 0xe7a23830bdccf8e24a6aa1d84d94cff498f3958a, 0x13d192adc3f46a9a2b624a3a93e6faf243e2120f, 0x7),
(0xd24bfd231c4e6b4b3fe46ec642392e59bf1b7358, 0x51b756a681426525f7194a66375a35185d529813, 0x57a86c9d1fe7fe8ad9b05ea21239cd42bce93ca6, 0x2),
(0xeb0501d2e40edeb6ecad416cfb5d12459de1f32a, 0xc5a4cacf614bc7519130e6727126823d77b51c85, 0xd86708d496f4e4265526247c79931bbc0351237c, 0x0),
(0xb41393d8fe5adbe01ec1ae88aacf8030f990c260, 0xb6997c03f903bc1add14cb98e8741647a60c62ad, 0x2fa481db8208ccfa161e791631d91cc012bff387, 0x5),
(0x851a5f6a1ff9ad28e22858aded0abe1d927f8f47, 0xa35a9a8b26bcbf0a639efd5583c9830aa2834a61, 0x71ed5887fc9b53af96793aa25285227e679923d0, 0x6),
(0x36d5d74fdbb34184f56989136c19526a1e66f284, 0xe2636b99dd8277a5bdf411a2ab44688704682b8b, 0x8fa686e14e0c8c40f507b8e4cc8abf2d8391e13e, 0x3),
(0x136e1685ce0dd8fa72c17db7f71ad3ec08201b0f, 0xf8715b24f37af56cd40108e12d4cd65dfe47b18a, 0x447eb0b48cd17036c130d2c9814df4452645562e, 0x3),
(0x442cd9850919eef698ad67aad25dac1e609042cc, 0x8879c395e3021c4c8e1d4cf3ed7556ddcfe88c98, 0xaf3310936f1bf6f93698081b581b362aa4432c2f, 0x0),
(0xe788598a42acba0d0b7b1f6ec9b230b44a477aad, 0xad119581e7a04cf0b3b1f5197bc27d9684813b36, 0x774ad198691047f7a63714bc633ebf66aa7d2e9d, 0x0),
(0x96db72fa75d1f4ef567ae6b0a6a9b67b6eb925, 0xb2a2d5c2c26fdf25b4ccc5981beff2fbce544bf1, 0x259ef89bfdf867a25f2a45ba31e3b8f01d15ac98, 0x6),
(0xfe84f3657569c6b2f6a820fe72ae29980bb3d3b6, 0x81f40f3434d8a526ae3bdd9229e3b91436c195f2, 0xd9ad8ce4bae25a93282b2d585a3ccc9f76c3cfd2, 0x0),
(0xbd38a3ba51b95b74301f1a375039aadf45cf9500, 0x981371c31ca751800cd9554d120390faa176f90, 0xc687f4008be79d2f747d0d3d373d2908dc99f863, 0x0),
(0x5cf2a3d05d937cb49929f7a5420c77a510f9b9db, 0x43b40c9c33d53a2c03193c499ef7f99c19d36ed2, 0x6efe5e9f33a99b6d6e2b072c52923bbbc6050ee0, 0x4),
(0xb3096421f5e4056f23b5bab000b764a049bff24d, 0x8f826e2bce70b6aa6ec454bc8e9e8cd851ebb165, 0xbb9e3082a3a1bd77fd66bb03772219a944f03e29, 0x7),
(0x3dd4cead2e79dcf86cc7917a579a2dba900bb099, 0x7f75439b0103ed40729a24e7f9846b7c2ca3558, 0x2ebb76dc34c83a60571f14cdf6f8261988a902bd, 0x7),
(0x3180aeb53046ca485f501895ed61e57e8ed27b7, 0x7efbf45c158b115885fb00e2ac5b5df85eef468a, 0x7c97ef4e278686bce1a424a92471b21fcf3658b6, 0x3),
(0x559fa993834a40f6fd31f8a3a2f83da980b2ef84, 0x8785d04f6d97d688f90af33140889e4c7201382a, 0x779f8d284898ca25426208f3a6c3b9455c70eb0d, 0x7),
(0x49a0f529e86a638d1cb71dbd948357d390646128, 0xc5c72505c3807890a11502cfc0286fdf40c924bd, 0xdc242283b58e5d98803c067a4633590e5d1e5d9e, 0x1),
(0xef75ace89af3a7791034ae6161e608384984eb34, 0x61a4d32ca6bdf4f8559cf15bc9be41721575650, 0x8fd9e8a6cdd86a2d960409b124453245b1c92f09, 0x5),
(0xcf0cf859a451378f576de4e10b918fa70b0d0e02, 0x66a7f51a86fe0cd0db57d2025464c1d95384c6c0, 0xcc4673380c3a3cc4545e5644ebaad0ee2205af36, 0x5),
(0xa973fdecf97847abfadc76a530cfaa51a544992f, 0x64ebd081e1e5be70904723e1a786d9581ad4e5a5, 0x58c16e616268863fce12b920e281ad4b1d9d2881, 0x1),
(0x9bbcfa5f87bea52e4df986ecdb89dadf9fe7242b, 0x520b4e89d3e3cd032e5c8c9cfab3f706fe49ca8c, 0x198aa5c2cab8d22845c4f3ea8f710becaba98d13, 0x3),
(0x42abe9b2d14ec440b51362694f93116cf4a8980d, 0x38c3965c6f9c9699476239ea669acc598bf748b6, 0xb47208202e92dbc5ed3d4319dd9e4ceeb21e9ec8, 0x5),
(0x334732df257a5c08e42c56dcd31f3be5cfaa196e, 0xe6387cab10b4e3bff5c72b7a8c47bf3f73812e0c, 0x315e28210455bc5535e6f2a6dcf5a76732ad8c88, 0x3),
(0x825347e82b6ecb7c40353d9282daf9804088f22b, 0xced5ac7b578c4a95a177a283f60437a70232ff0, 0xb647c743e3b4ce3ca95c586bdd14afc41d91ad09, 0x4),
(0xf862df8e80ded401998ce913668155e078f5863f, 0xa73fe4db4136c28cbfc6ee73c800548a0bd463e2, 0xff0395bc6b17d90c38ba263488be5987e3b44890, 0x7),
"""
    解题:

    先回顾一下ECDSA的基础知识,sk是私钥对象G,vk是公钥对象Q,d是私钥(G*d=Q),h是hash处理后的信息,随机数k,x%q=r,invert(k,q)(h+rd)%q=s是签名对

    这里看到泄露多组数据(达到信息论要求),并且泄露可以用a*x+b表示,识别HNP

    from sage.all import *
    from hashlib import md5
    q = 0x100000000000000000001f4c8f927aed3ca752257
    pubx = 0x8e0a0071e8cf437efec4233ff8444a4ff8adba2f
    puby = 0xa869fce702b70799c443b450a4d41cc4f65b3eee
    leak = 3
    B = 2^leak
    data = [
    (0x525931a9ff8ef95025939a57275ecedc2730421f,0x5288ed7146c188ebda9b6c8909726c3d6f957891,0x334c301c2d861fa8cceecabc542a5cb7dd7df7d9,0x6),
    (0x4b21047e1112dbfee487b4f23471f2fb438e268,0x82878368ef18996109bf10adae81e1acaeb9fa25,0xd4d9ec1faa9534a3fa4ff0fe78488ebf175cdfec,0x4),
    (0xdd2e98102508e178fdf1e289ac8342250da6408f,0x38069b3213a57a077a38938d082a7590d0a21b95,0xcff1f76af8f15422bb288c8af372332cc6ace970,0x1),
    (0xecb8547ea2a68788665e01a7025093c47f2b45de,0x6f7155ce9da5434227e48554a0bef7d7492cadb,0x53f6e1a52554436620b392dea75738b5f670d2b2,0x2),
    (0xefb887600edf8d279f3cca868ef641e9284ae769,0x9caea57dd4681d1ab53029cf631a47277386bc72,0xce7743df557c732daff4595d8430ea8485ab3aca,0x3),
    (0x957ec8b7a53dea95d53a5c94d595b834c2be61ca,0x1b24031194de7dac370a2f7c9be316dc14cbe3f2,0xc40b5c4c674d1f4cb99891bf342f8acebca9258b,0x5),
    (0x8ba1946c16b7c8d98c6e01836ae0d791ecae07d9,0x6daec7923c03c56a18d764d9497c39871912fb1a,0x717b2cf60cc5416eb3f1666e79f30d538f5c9038,0x5),
    (0x72337b25f3486e8518d8f3a4da21724cf3977246,0xff88c0ddcdcdfb98ca50b68c035434ee2e81cd1d,0x748e1c374d1efdcb3b9bd7b3c812213ddc1ab940,0x4),
    (0xa71275186b7bbc9747c5831b1e4c75f1bd3eae7a,0x43b995ded8fddfa6365a51d547456376c8f79b88,0x6c9a0e390dc7d40900f412313dfe0deb8a5cbb45,0x6),
    (0x926bff0ea87d5c1e8c9da39ceb01a10d1b3c0709,0xaeb5012cbaf479dd3c2d297ba3a80d344ab22f57,0xa3eff29dffaed0371d860e291c8f65eb287918ce,0x3),
    (0xdc9e51d365f8a827988cf70c4913d987343dc74a,0xa6940f2d3f38d0d4b20c36b24f4f91b5bdee59c1,0xb3a7373eeaf10e449aca7e3cc00f6f554ff0473f,0x4),
    (0x2bcbef8732ab1e591dff595cb1c979f90ebadf0c,0x3b629a50ab44f67f762dff710653c1fa995863c1,0x7425a16af106e5eba3a0f751baba95708ead3c0,0x1),
    (0x6a0eadeed0b9e7e900df27d5e253968c30f0f6bd,0x47e22a97f4dfee66b8b04983bbfbfe0374fa917d,0xfadb3f2a5b347b9fa8cfdaeddecb1215f19ec707,0x7),
    (0x884675226091712e22a0fbf1fa3c0de95fa09dae,0x6549eabd7fd5bc6832e2ab061fb02d0f1df6b19a,0xb660a3baf9d96985c3b8d420259003b8fc0a4410,0x2),
    (0x2a81e382054ed9523f5e4d2a966252b51046325d,0x81f663abbd508d6df460a1d5a857829834a969ac,0xe51bcf400dd3fddb5b9f13fd0403b3af011f9fc6,0x4),
    (0x25f6147e13fc52aaf92b1622134c52dff9ec282d,0x76e457adf428f8a1a82711584e336c0b3b70e94e,0x6af1ced8354c4bdf84fc55fef847848d4dad83e6,0x3),
    (0xfe0eba650a95051d8fa04f43824d465fdad34493,0xadd5339288e5527a394a602a2f4e891dbdf8d7aa,0x169a5d1b893fa66e35ec2620bc96f73d067c9460,0x3),
    (0xb8914a5d41cdd7ff1f0eed7e6eab2e79fabfde5b,0xf6673ed83fe9731508921bfc12773a19980e5345,0x83710a069298113cfc91d716a38e1584b2606033,0x5),
    (0xae25b8812cc4f7fec5a14f4174328be0a254cc26,0x16381c71aa45674488d8b1a10ff0a16d4fd6c997,0xa947337c2f9d0efe9e69f3a5332c7d0887937643,0x0),
    (0xd8bc55b669d86fe42448a83063aea36251b5fe75,0x8050afa80843f0162c7fa5323cf19f4f194f90ec,0x9207917cde2804eb97708cb3392610f716e8c5c,0x4),
    (0xabf778fe7279f34fe6f883d56b938ec46bafb21,0xf1e96791da0ebc0981eb60fae9509f3c973d5df7,0xf3f07a604cde6a2164601357cfde0c4b2200fb44,0x5),
    (0x8bbc50d04d2841668fc639c0a0f5ae2cd9f13e03,0xfa4107e471bd396a25b3853ec09a56c49343cfa3,0xaf2d6a8142fcf028ce8aabc31377c6d7c63bc9c3,0x7),
    (0xd3db7034072a88a03f7a632fdc3f5a07846c79c3,0x463871a92ceba68a12ab4d02759ff1aec24c9355,0xc61b3931ecf8330d4b26b9175efa8690161d25b4,0x4),
    (0x5d5672957260b5794e305ee24bccc07f8dd34d94,0x7c27bdada7014240c904d42c5a1a1e5f38ea9826,0x779a7fcc0582e3d901494a98b8d9aa1b8d5f5840,0x7),
    (0x1d197eefd0a6c59ea8f3cfc69c066ce92d7f6e96,0x665a2ba8a286880c09e2c9ea9adb7479d5bc123d,0x6377c18c0cf75070627ef9613af864be815eeed6,0x4),
    (0x9c7975f4b345048f7e2d3614d5fdcf162be0d920,0xf2142d01b4b7c2a5585c8458366c716729ee3329,0x1dd8903dafda53bfe000f606bceee5b31816f683,0x7),
    (0x5062cb7d6e3b50df1820f5996962b5b8b1fc4617,0xaa47856eecf23e8ef0f212ed3a978f4d5564d650,0xa02ffbb157a74b3f105895cbe487c6e1da411070,0x0),
    (0xcdfcb6ff93ca01a2755c0c8f0ad8ee04118e1b9e,0x1fdc78b5968fbd65351406a0e7cb6f45d9f26a01,0xcec3c44ec773a31fd3785a998e3526624a504705,0x3),
    (0x65fc356da2a36d35d88c5c5792661d8fe152821c,0x20a49731ddf37504876ed4303cf8ee52426abbbe,0xf974613f265ced476f0ad2548eecffcf4b648a9e,0x7),
    (0x59544b829fa1f696558ea62792b85e114e397433,0x23645dd35469fd873a73db34f1018f08ae7f2c24,0xe5a23255d9760df1f8d6c8ce1652e0480beb0b7d,0x2),
    (0x8ef11fdbed1a2f64faca70aea2cac44dadd8c14c,0x640d24c485e9e04b9af2355c07cf7ad430c7ca58,0x20f0e050124bd754c13b8c2e86dbebaee2132bec,0x1),
    (0x1b5ac91240f6450de7fc5208f0762501790e28b7,0x7991d2db2512b6463c201f0523ed863ce2a670e8,0xebf64515f997f18b726cd11a24276ef26505a409,0x6),
    (0xba35a8c66a894fae013ac56c9d6ba538d8cbcf0b,0xcea24619e5bdd3418da925e3aebd5a3c6f64ef03,0xb9216f67fe0aa26e374b92ecf4b0c8545522785e,0x0),
    (0xe4e86fdd765bc4d98bc807e3f56ad2f2ef8dbd15,0x67a9d34b95c25764e1026fd64a0cdadc4f894ef,0x57f0a006eb1ddbae5b7aaaa3e5a2740c1401c9e2,0x6),
    (0xe582d66c85dda020da90ce0248057e9dff2a0120,0x8f261523dad715ddc7c992972d8cdab39a0e8920,0x2bcd65226ab00e4e1117a90b735ea287a921641a,0x2),
    (0x62ac7d9437e54969456ae056289adeaefaccd6bb,0xe7a23830bdccf8e24a6aa1d84d94cff498f3958a,0x13d192adc3f46a9a2b624a3a93e6faf243e2120f,0x7),
    (0xd24bfd231c4e6b4b3fe46ec642392e59bf1b7358,0x51b756a681426525f7194a66375a35185d529813,0x57a86c9d1fe7fe8ad9b05ea21239cd42bce93ca6,0x2),
    (0xeb0501d2e40edeb6ecad416cfb5d12459de1f32a,0xc5a4cacf614bc7519130e6727126823d77b51c85,0xd86708d496f4e4265526247c79931bbc0351237c,0x0),
    (0xb41393d8fe5adbe01ec1ae88aacf8030f990c260,0xb6997c03f903bc1add14cb98e8741647a60c62ad,0x2fa481db8208ccfa161e791631d91cc012bff387,0x5),
    (0x851a5f6a1ff9ad28e22858aded0abe1d927f8f47,0xa35a9a8b26bcbf0a639efd5583c9830aa2834a61,0x71ed5887fc9b53af96793aa25285227e679923d0,0x6),
    (0x36d5d74fdbb34184f56989136c19526a1e66f284,0xe2636b99dd8277a5bdf411a2ab44688704682b8b,0x8fa686e14e0c8c40f507b8e4cc8abf2d8391e13e,0x3),
    (0x136e1685ce0dd8fa72c17db7f71ad3ec08201b0f,0xf8715b24f37af56cd40108e12d4cd65dfe47b18a,0x447eb0b48cd17036c130d2c9814df4452645562e,0x3),
    (0x442cd9850919eef698ad67aad25dac1e609042cc,0x8879c395e3021c4c8e1d4cf3ed7556ddcfe88c98,0xaf3310936f1bf6f93698081b581b362aa4432c2f,0x0),
    (0xe788598a42acba0d0b7b1f6ec9b230b44a477aad,0xad119581e7a04cf0b3b1f5197bc27d9684813b36,0x774ad198691047f7a63714bc633ebf66aa7d2e9d,0x0),
    (0x96db72fa75d1f4ef567ae6b0a6a9b67b6eb925,0xb2a2d5c2c26fdf25b4ccc5981beff2fbce544bf1,0x259ef89bfdf867a25f2a45ba31e3b8f01d15ac98,0x6),
    (0xfe84f3657569c6b2f6a820fe72ae29980bb3d3b6,0x81f40f3434d8a526ae3bdd9229e3b91436c195f2,0xd9ad8ce4bae25a93282b2d585a3ccc9f76c3cfd2,0x0),
    (0xbd38a3ba51b95b74301f1a375039aadf45cf9500,0x981371c31ca751800cd9554d120390faa176f90,0xc687f4008be79d2f747d0d3d373d2908dc99f863,0x0),
    (0x5cf2a3d05d937cb49929f7a5420c77a510f9b9db,0x43b40c9c33d53a2c03193c499ef7f99c19d36ed2,0x6efe5e9f33a99b6d6e2b072c52923bbbc6050ee0,0x4),
    (0xb3096421f5e4056f23b5bab000b764a049bff24d,0x8f826e2bce70b6aa6ec454bc8e9e8cd851ebb165,0xbb9e3082a3a1bd77fd66bb03772219a944f03e29,0x7),
    (0x3dd4cead2e79dcf86cc7917a579a2dba900bb099,0x7f75439b0103ed40729a24e7f9846b7c2ca3558,0x2ebb76dc34c83a60571f14cdf6f8261988a902bd,0x7),
    (0x3180aeb53046ca485f501895ed61e57e8ed27b7,0x7efbf45c158b115885fb00e2ac5b5df85eef468a,0x7c97ef4e278686bce1a424a92471b21fcf3658b6,0x3),
    (0x559fa993834a40f6fd31f8a3a2f83da980b2ef84,0x8785d04f6d97d688f90af33140889e4c7201382a,0x779f8d284898ca25426208f3a6c3b9455c70eb0d,0x7),
    (0x49a0f529e86a638d1cb71dbd948357d390646128,0xc5c72505c3807890a11502cfc0286fdf40c924bd,0xdc242283b58e5d98803c067a4633590e5d1e5d9e,0x1),
    (0xef75ace89af3a7791034ae6161e608384984eb34,0x61a4d32ca6bdf4f8559cf15bc9be41721575650,0x8fd9e8a6cdd86a2d960409b124453245b1c92f09,0x5),
    (0xcf0cf859a451378f576de4e10b918fa70b0d0e02,0x66a7f51a86fe0cd0db57d2025464c1d95384c6c0,0xcc4673380c3a3cc4545e5644ebaad0ee2205af36,0x5),
    (0xa973fdecf97847abfadc76a530cfaa51a544992f,0x64ebd081e1e5be70904723e1a786d9581ad4e5a5,0x58c16e616268863fce12b920e281ad4b1d9d2881,0x1),
    (0x9bbcfa5f87bea52e4df986ecdb89dadf9fe7242b,0x520b4e89d3e3cd032e5c8c9cfab3f706fe49ca8c,0x198aa5c2cab8d22845c4f3ea8f710becaba98d13,0x3),
    (0x42abe9b2d14ec440b51362694f93116cf4a8980d,0x38c3965c6f9c9699476239ea669acc598bf748b6,0xb47208202e92dbc5ed3d4319dd9e4ceeb21e9ec8,0x5),
    (0x334732df257a5c08e42c56dcd31f3be5cfaa196e,0xe6387cab10b4e3bff5c72b7a8c47bf3f73812e0c,0x315e28210455bc5535e6f2a6dcf5a76732ad8c88,0x3),
    (0x825347e82b6ecb7c40353d9282daf9804088f22b,0xced5ac7b578c4a95a177a283f60437a70232ff0,0xb647c743e3b4ce3ca95c586bdd14afc41d91ad09,0x4),
    (0xf862df8e80ded401998ce913668155e078f5863f,0xa73fe4db4136c28cbfc6ee73c800548a0bd463e2,0xff0395bc6b17d90c38ba263488be5987e3b44890,0x7)
    ]
    n=len(data)
    A=[]
    C=[]
    for h,r,s,b in data:
        s_inv=inverse_mod(s,q)
        A.append((r*s_inv)%q)
        C.append(((h-b*s)*s_inv)%q)#HNP化简
    M=Matrix(ZZ,n+1,n+1)
    for i in range(n):
        M[i,i]=q
    for i in range(n):
        M[n,i]=A[i]
    M[n,n]=B
    target=vector(C+[0])
    M=M.stack(target)#这里表示把这行加到底下
    print("[*] running LLL")
    L=M.LLL()
    for row in L:
        d=int(row[-1])%q
        if d==0:
            continue
        from ecdsa import SigningKey,SECP160r1
        try:
            sk=SigningKey.from_secret_exponent(d,curve=SECP160r1)
            vk=sk.verifying_key
    #这里是检查,用G&自己算出来的d的x,y是否符合题上提供的x,y
            if vk.pubkey.point.x()==pubx and vk.pubkey.point.y()==puby:
                print("d =",d)
               flag="DesCTF{"+md5(str(d).encode()).hexdigest()+"}"
                print("FLAG =",flag)
                break
        except:
            pass
    

    实际上学下来掌握了基础理解和变形控制,信息论确认,以及多组数据处理变性就差不多了(见LCG)

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