From b21162cf8e06f40baa1f58be6a8c17435cebc34d Mon Sep 17 00:00:00 2001 From: weidai Date: Fri, 4 Oct 2002 17:31:41 +0000 Subject: Initial revision git-svn-id: svn://svn.code.sf.net/p/cryptopp/code/trunk/c5@2 57ff6487-cd31-0410-9ec3-f628ee90f5f0 --- eccrypto.cpp | 639 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 639 insertions(+) create mode 100644 eccrypto.cpp (limited to 'eccrypto.cpp') diff --git a/eccrypto.cpp b/eccrypto.cpp new file mode 100644 index 0000000..28110b7 --- /dev/null +++ b/eccrypto.cpp @@ -0,0 +1,639 @@ +#include "pch.h" +#include "eccrypto.h" +#include "ec2n.h" +#include "ecp.h" +#include "nbtheory.h" +#include "oids.h" +#include "hex.h" +#include "argnames.h" + +NAMESPACE_BEGIN(CryptoPP) + +static void ECDSA_TestInstantiations() +{ + ECDSA::Signer t1; + ECDSA::Verifier t2(t1); + ECNR::Signer t3; + ECNR::Verifier t4(t3); + ECIES::Encryptor t5; + ECIES::Decryptor t6; + ECDH::Domain t7; + ECMQV::Domain t8; +} + +// VC60 workaround: complains when these functions are put into an anonymous namespace +static Integer ConvertToInteger(const PolynomialMod2 &x) +{ + unsigned int l = x.ByteCount(); + SecByteBlock temp(l); + x.Encode(temp, l); + return Integer(temp, l); +} + +static inline Integer ConvertToInteger(const Integer &x) +{ + return x; +} + +static bool CheckMOVCondition(const Integer &q, const Integer &r) +{ + Integer t=1; + unsigned int n=q.BitCount(), m=r.BitCount(); + + for (unsigned int i=n; DiscreteLogWorkFactor(i) struct EcRecommendedParameters; + +template<> struct EcRecommendedParameters +{ + EcRecommendedParameters(const OID &oid, unsigned int t2, unsigned int t3, unsigned int t4, const char *a, const char *b, const char *g, const char *n, unsigned int h) + : oid(oid), t0(0), t1(0), t2(t2), t3(t3), t4(t4), a(a), b(b), g(g), n(n), h(h) {} + EcRecommendedParameters(const OID &oid, unsigned int t0, unsigned int t1, unsigned int t2, unsigned int t3, unsigned int t4, const char *a, const char *b, const char *g, const char *n, unsigned int h) + : oid(oid), t0(t0), t1(t1), t2(t2), t3(t3), t4(t4), a(a), b(b), g(g), n(n), h(h) {} + EC2N *NewEC() const + { + StringSource ssA(a, true, new HexDecoder); + StringSource ssB(b, true, new HexDecoder); + if (t0 == 0) + return new EC2N(GF2NT(t2, t3, t4), EC2N::FieldElement(ssA, ssA.MaxRetrievable()), EC2N::FieldElement(ssB, ssB.MaxRetrievable())); + else + return new EC2N(GF2NPP(t0, t1, t2, t3, t4), EC2N::FieldElement(ssA, ssA.MaxRetrievable()), EC2N::FieldElement(ssB, ssB.MaxRetrievable())); + }; + + OID oid; + unsigned int t0, t1, t2, t3, t4; + const char *a, *b, *g, *n; + unsigned int h; +}; + +template<> struct EcRecommendedParameters +{ + EcRecommendedParameters(const OID &oid, const char *p, const char *a, const char *b, const char *g, const char *n, unsigned int h) + : oid(oid), p(p), a(a), b(b), g(g), n(n), h(h) {} + ECP *NewEC() const + { + StringSource ssP(p, true, new HexDecoder); + StringSource ssA(a, true, new HexDecoder); + StringSource ssB(b, true, new HexDecoder); + return new ECP(Integer(ssP, ssP.MaxRetrievable()), ECP::FieldElement(ssA, ssA.MaxRetrievable()), ECP::FieldElement(ssB, ssB.MaxRetrievable())); + }; + + OID oid; + const char *p; + const char *a, *b, *g, *n; + unsigned int h; +}; + +struct OIDLessThan +{ + template + inline bool operator()(const EcRecommendedParameters& a, const OID& b) {return a.oid < b;} + template + inline bool operator()(const OID& a, const EcRecommendedParameters& b) {return a < b.oid;} +}; + +static void GetRecommendedParameters(const EcRecommendedParameters *&begin, const EcRecommendedParameters *&end) +{ + // this array must be sorted by OID + static const EcRecommendedParameters rec[] = { + EcRecommendedParameters(ASN1::sect163k1(), + 163, 7, 6, 3, 0, + "000000000000000000000000000000000000000001", + "000000000000000000000000000000000000000001", + "0402FE13C0537BBC11ACAA07D793DE4E6D5E5C94EEE80289070FB05D38FF58321F2E800536D538CCDAA3D9", + "04000000000000000000020108A2E0CC0D99F8A5EF", + 2), + EcRecommendedParameters(ASN1::sect163r1(), + 163, 7, 6, 3, 0, + "07B6882CAAEFA84F9554FF8428BD88E246D2782AE2", + "0713612DCDDCB40AAB946BDA29CA91F73AF958AFD9", + "040369979697AB43897789566789567F787A7876A65400435EDB42EFAFB2989D51FEFCE3C80988F41FF883", + "03FFFFFFFFFFFFFFFFFFFF48AAB689C29CA710279B", + 2), + EcRecommendedParameters(ASN1::sect239k1(), + 239, 158, 0, + "000000000000000000000000000000000000000000000000000000000000", + "000000000000000000000000000000000000000000000000000000000001", + "0429A0B6A887A983E9730988A68727A8B2D126C44CC2CC7B2A6555193035DC76310804F12E549BDB011C103089E73510ACB275FC312A5DC6B76553F0CA", + "2000000000000000000000000000005A79FEC67CB6E91F1C1DA800E478A5", + 4), + EcRecommendedParameters(ASN1::sect113r1(), + 113, 9, 0, + "003088250CA6E7C7FE649CE85820F7", + "00E8BEE4D3E2260744188BE0E9C723", + "04009D73616F35F4AB1407D73562C10F00A52830277958EE84D1315ED31886", + "0100000000000000D9CCEC8A39E56F", + 2), + EcRecommendedParameters(ASN1::sect113r2(), + 113, 9, 0, + "00689918DBEC7E5A0DD6DFC0AA55C7", + "0095E9A9EC9B297BD4BF36E059184F", + "0401A57A6A7B26CA5EF52FCDB816479700B3ADC94ED1FE674C06E695BABA1D", + "010000000000000108789B2496AF93", + 2), + EcRecommendedParameters(ASN1::sect163r2(), + 163, 7, 6, 3, 0, + "000000000000000000000000000000000000000001", + "020A601907B8C953CA1481EB10512F78744A3205FD", + "0403F0EBA16286A2D57EA0991168D4994637E8343E3600D51FBC6C71A0094FA2CDD545B11C5C0C797324F1", + "040000000000000000000292FE77E70C12A4234C33", + 2), + EcRecommendedParameters(ASN1::sect283k1(), + 283, 12, 7, 5, 0, + "000000000000000000000000000000000000000000000000000000000000000000000000", + "000000000000000000000000000000000000000000000000000000000000000000000001", + "040503213F78CA44883F1A3B8162F188E553CD265F23C1567A16876913B0C2AC245849283601CCDA380F1C9E318D90F95D07E5426FE87E45C0E8184698E45962364E34116177DD2259", + "01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE9AE2ED07577265DFF7F94451E061E163C61", + 4), + EcRecommendedParameters(ASN1::sect283r1(), + 283, 12, 7, 5, 0, + "000000000000000000000000000000000000000000000000000000000000000000000001", + "027B680AC8B8596DA5A4AF8A19A0303FCA97FD7645309FA2A581485AF6263E313B79A2F5", + "0405F939258DB7DD90E1934F8C70B0DFEC2EED25B8557EAC9C80E2E198F8CDBECD86B1205303676854FE24141CB98FE6D4B20D02B4516FF702350EDDB0826779C813F0DF45BE8112F4", + "03FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEF90399660FC938A90165B042A7CEFADB307", + 2), + EcRecommendedParameters(ASN1::sect131r1(), + 131, 8, 3, 2, 0, + "07A11B09A76B562144418FF3FF8C2570B8", + "0217C05610884B63B9C6C7291678F9D341", + "040081BAF91FDF9833C40F9C181343638399078C6E7EA38C001F73C8134B1B4EF9E150", + "0400000000000000023123953A9464B54D", + 2), + EcRecommendedParameters(ASN1::sect131r2(), + 131, 8, 3, 2, 0, + "03E5A88919D7CAFCBF415F07C2176573B2", + "04B8266A46C55657AC734CE38F018F2192", + "040356DCD8F2F95031AD652D23951BB366A80648F06D867940A5366D9E265DE9EB240F", + "0400000000000000016954A233049BA98F", + 2), + EcRecommendedParameters(ASN1::sect193r1(), + 193, 15, 0, + "0017858FEB7A98975169E171F77B4087DE098AC8A911DF7B01", + "00FDFB49BFE6C3A89FACADAA7A1E5BBC7CC1C2E5D831478814", + "0401F481BC5F0FF84A74AD6CDF6FDEF4BF6179625372D8C0C5E10025E399F2903712CCF3EA9E3A1AD17FB0B3201B6AF7CE1B05", + "01000000000000000000000000C7F34A778F443ACC920EBA49", + 2), + EcRecommendedParameters(ASN1::sect193r2(), + 193, 15, 0, + "0163F35A5137C2CE3EA6ED8667190B0BC43ECD69977702709B", + "00C9BB9E8927D4D64C377E2AB2856A5B16E3EFB7F61D4316AE", + "0400D9B67D192E0367C803F39E1A7E82CA14A651350AAE617E8F01CE94335607C304AC29E7DEFBD9CA01F596F927224CDECF6C", + "010000000000000000000000015AAB561B005413CCD4EE99D5", + 2), + EcRecommendedParameters(ASN1::sect233k1(), + 233, 74, 0, + "000000000000000000000000000000000000000000000000000000000000", + "000000000000000000000000000000000000000000000000000000000001", + "04017232BA853A7E731AF129F22FF4149563A419C26BF50A4C9D6EEFAD612601DB537DECE819B7F70F555A67C427A8CD9BF18AEB9B56E0C11056FAE6A3", + "8000000000000000000000000000069D5BB915BCD46EFB1AD5F173ABDF", + 4), + EcRecommendedParameters(ASN1::sect233r1(), + 233, 74, 0, + "000000000000000000000000000000000000000000000000000000000001", + "0066647EDE6C332C7F8C0923BB58213B333B20E9CE4281FE115F7D8F90AD", + "0400FAC9DFCBAC8313BB2139F1BB755FEF65BC391F8B36F8F8EB7371FD558B01006A08A41903350678E58528BEBF8A0BEFF867A7CA36716F7E01F81052", + "01000000000000000000000000000013E974E72F8A6922031D2603CFE0D7", + 2), + EcRecommendedParameters(ASN1::sect409k1(), + 409, 87, 0, + "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000", + "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001", + "040060F05F658F49C1AD3AB1890F7184210EFD0987E307C84C27ACCFB8F9F67CC2C460189EB5AAAA62EE222EB1B35540CFE902374601E369050B7C4E42ACBA1DACBF04299C3460782F918EA427E6325165E9EA10E3DA5F6C42E9C55215AA9CA27A5863EC48D8E0286B", + "7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE5F83B2D4EA20400EC4557D5ED3E3E7CA5B4B5C83B8E01E5FCF", + 4), + EcRecommendedParameters(ASN1::sect409r1(), + 409, 87, 0, + "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001", + "0021A5C2C8EE9FEB5C4B9A753B7B476B7FD6422EF1F3DD674761FA99D6AC27C8A9A197B272822F6CD57A55AA4F50AE317B13545F", + "04015D4860D088DDB3496B0C6064756260441CDE4AF1771D4DB01FFE5B34E59703DC255A868A1180515603AEAB60794E54BB7996A70061B1CFAB6BE5F32BBFA78324ED106A7636B9C5A7BD198D0158AA4F5488D08F38514F1FDF4B4F40D2181B3681C364BA0273C706", + "010000000000000000000000000000000000000000000000000001E2AAD6A612F33307BE5FA47C3C9E052F838164CD37D9A21173", + 2), + EcRecommendedParameters(ASN1::sect571k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cRecommendedParameters(ASN1::sect571r1(), + 571, 10, 5, 2, 0, + "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001", + "02F40E7E2221F295DE297117B7F3D62F5C6A97FFCB8CEFF1CD6BA8CE4A9A18AD84FFABBD8EFA59332BE7AD6756A66E294AFD185A78FF12AA520E4DE739BACA0C7FFEFF7F2955727A", + "040303001D34B856296C16C0D40D3CD7750A93D1D2955FA80AA5F40FC8DB7B2ABDBDE53950F4C0D293CDD711A35B67FB1499AE60038614F1394ABFA3B4C850D927E1E7769C8EEC2D19037BF27342DA639B6DCCFFFEB73D69D78C6C27A6009CBBCA1980F8533921E8A684423E43BAB08A576291AF8F461BB2A8B3531D2F0485C19B16E2F1516E23DD3C1A4827AF1B8AC15B", + "03FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE661CE18FF55987308059B186823851EC7DD9CA1161DE93D5174D66E8382E9BB2FE84E47", + 2), + }; + begin = rec; + end = rec + sizeof(rec)/sizeof(rec[0]); +} + +static void GetRecommendedParameters(const EcRecommendedParameters *&begin, const EcRecommendedParameters *&end) +{ + // this array must be sorted by OID + static const EcRecommendedParameters rec[] = { + EcRecommendedParameters(ASN1::secp192r1(), + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFF", + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFC", + "64210519E59C80E70FA7E9AB72243049FEB8DEECC146B9B1", + "04188DA80EB03090F67CBF20EB43A18800F4FF0AFD82FF101207192B95FFC8DA78631011ED6B24CDD573F977A11E794811", + "FFFFFFFFFFFFFFFFFFFFFFFF99DEF836146BC9B1B4D22831", + 1), + EcRecommendedParameters(ASN1::secp256r1(), + "FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFF", + "FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFC", + "5AC635D8AA3A93E7B3EBBD55769886BC651D06B0CC53B0F63BCE3C3E27D2604B", + "046B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C2964FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5", + "FFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551", + 1), + EcRecommendedParameters(ASN1::secp112r1(), + "DB7C2ABF62E35E668076BEAD208B", + "DB7C2ABF62E35E668076BEAD2088", + "659EF8BA043916EEDE8911702B22", + "0409487239995A5EE76B55F9C2F098A89CE5AF8724C0A23E0E0FF77500", + "DB7C2ABF62E35E7628DFAC6561C5", + 1), + EcRecommendedParameters(ASN1::secp112r2(), + "DB7C2ABF62E35E668076BEAD208B", + "6127C24C05F38A0AAAF65C0EF02C", + "51DEF1815DB5ED74FCC34C85D709", + "044BA30AB5E892B4E1649DD0928643ADCD46F5882E3747DEF36E956E97", + "36DF0AAFD8B8D7597CA10520D04B", + 4), + EcRecommendedParameters(ASN1::secp160r1(), + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFF", + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFC", + "1C97BEFC54BD7A8B65ACF89F81D4D4ADC565FA45", + "044A96B5688EF573284664698968C38BB913CBFC8223A628553168947D59DCC912042351377AC5FB32", + "0100000000000000000001F4C8F927AED3CA752257", + 1), + EcRecommendedParameters(ASN1::secp160k1(), + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFAC73", + "0000000000000000000000000000000000000000", + "0000000000000000000000000000000000000007", + "043B4C382CE37AA192A4019E763036F4F5DD4D7EBB938CF935318FDCED6BC28286531733C3F03C4FEE", + "0100000000000000000001B8FA16DFAB9ACA16B6B3", + 1), + EcRecommendedParameters(ASN1::secp256k1(), + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F", + "0000000000000000000000000000000000000000000000000000000000000000", + "0000000000000000000000000000000000000000000000000000000000000007", + "0479BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8", + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141", + 1), + EcRecommendedParameters(ASN1::secp128r1(), + "FFFFFFFDFFFFFFFFFFFFFFFFFFFFFFFF", + "FFFFFFFDFFFFFFFFFFFFFFFFFFFFFFFC", + "E87579C11079F43DD824993C2CEE5ED3", + "04161FF7528B899B2D0C28607CA52C5B86CF5AC8395BAFEB13C02DA292DDED7A83", + "FFFFFFFE0000000075A30D1B9038A115", + 1), + EcRecommendedParameters(ASN1::secp128r2(), + "FFFFFFFDFFFFFFFFFFFFFFFFFFFFFFFF", + "D6031998D1B3BBFEBF59CC9BBFF9AEE1", + "5EEEFCA380D02919DC2C6558BB6D8A5D", + "047B6AA5D85E572983E6FB32A7CDEBC14027B6916A894D3AEE7106FE805FC34B44", + "3FFFFFFF7FFFFFFFBE0024720613B5A3", + 4), + EcRecommendedParameters(ASN1::secp160r2(), + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFAC73", + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFAC70", + "B4E134D3FB59EB8BAB57274904664D5AF50388BA", + "0452DCB034293A117E1F4FF11B30F7199D3144CE6DFEAFFEF2E331F296E071FA0DF9982CFEA7D43F2E", + "0100000000000000000000351EE786A818F3A1A16B", + 1), + EcRecommendedParameters(ASN1::secp192k1(), + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFEE37", + "000000000000000000000000000000000000000000000000", + "000000000000000000000000000000000000000000000003", + "04DB4FF10EC057E9AE26B07D0280B7F4341DA5D1B1EAE06C7D9B2F2F6D9C5628A7844163D015BE86344082AA88D95E2F9D", + "FFFFFFFFFFFFFFFFFFFFFFFE26F2FC170F69466A74DEFD8D", + 1), + EcRecommendedParameters(ASN1::secp224k1(), + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFE56D", + "00000000000000000000000000000000000000000000000000000000", + "00000000000000000000000000000000000000000000000000000005", + "04A1455B334DF099DF30FC28A169A467E9E47075A90F7E650EB6B7A45C7E089FED7FBA344282CAFBD6F7E319F7C0B0BD59E2CA4BDB556D61A5", + "010000000000000000000000000001DCE8D2EC6184CAF0A971769FB1F7", + 1), + EcRecommendedParameters(ASN1::secp224r1(), + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF000000000000000000000001", + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFE", + "B4050A850C04B3ABF54132565044B0B7D7BFD8BA270B39432355FFB4", + "04B70E0CBD6BB4BF7F321390B94A03C1D356C21122343280D6115C1D21BD376388B5F723FB4C22DFE6CD4375A05A07476444D5819985007E34", + "FFFFFFFFFFFFFFFFFFFFFFFFFFFF16A2E0B8F03E13DD29455C5C2A3D", + 1), + EcRecommendedParameters(ASN1::secp384r1(), + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFF0000000000000000FFFFFFFF", + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFF0000000000000000FFFFFFFC", + "B3312FA7E23EE7E4988E056BE3F82D19181D9C6EFE8141120314088F5013875AC656398D8A2ED19D2A85C8EDD3EC2AEF", + "04AA87CA22BE8B05378EB1C71EF320AD746E1D3B628BA79B9859F741E082542A385502F25DBF55296C3A545E3872760AB73617DE4A96262C6F5D9E98BF9292DC29F8F41DBD289A147CE9DA3113B5F0B8C00A60B1CE1D7E819D7A431D7C90EA0E5F", + "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC7634D81F4372DDF581A0DB248B0A77AECEC196ACCC52973", + 1), + EcRecommendedParameters(ASN1::secp521r1(), + "01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", + "01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC", + "0051953EB9618E1C9A1F929A21A0B68540EEA2DA725B99B315F3B8B489918EF109E156193951EC7E937B1652C0BD3BB1BF073573DF883D2C34F1EF451FD46B503F00", + "0400C6858E06B70404E9CD9E3ECB662395B4429C648139053FB521F828AF606B4D3DBAA14B5E77EFE75928FE1DC127A2FFA8DE3348B3C1856A429BF97E7E31C2E5BD66011839296A789A3BC0045C8A5FB42C7D1BD998F54449579B446817AFBD17273E662C97EE72995EF42640C550B9013FAD0761353C7086A272C24088BE94769FD16650", + "01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFA51868783BF2F966B7FCC0148F709A5D03BB5C9B8899C47AEBB6FB71E91386409", + 1), + }; + begin = rec; + end = rec + sizeof(rec)/sizeof(rec[0]); +} + +template OID DL_GroupParameters_EC::GetNextRecommendedParametersOID(const OID &oid) +{ + const EcRecommendedParameters *begin, *end; + GetRecommendedParameters(begin, end); + const EcRecommendedParameters *it = std::upper_bound(begin, end, oid, OIDLessThan()); + return (it == end ? OID() : it->oid); +} + +template void DL_GroupParameters_EC::Initialize(const OID &oid) +{ + const EcRecommendedParameters *begin, *end; + GetRecommendedParameters(begin, end); + const EcRecommendedParameters *it = std::lower_bound(begin, end, oid, OIDLessThan()); + if (it == end || it->oid != oid) + throw UnknownOID(); + + const EcRecommendedParameters ¶m = *it; + m_oid = oid; + std::auto_ptr ec(param.NewEC()); + m_groupPrecomputation.SetCurve(*ec); + + StringSource ssG(param.g, true, new HexDecoder); + Element G; + bool result = GetCurve().DecodePoint(G, ssG, ssG.MaxRetrievable()); + SetSubgroupGenerator(G); + assert(result); + + StringSource ssN(param.n, true, new HexDecoder); + m_n.Decode(ssN, ssN.MaxRetrievable()); + m_k = param.h; +} + +template +bool DL_GroupParameters_EC::GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const +{ + if (strcmp(name, Name::GroupOID()) == 0) + { + if (m_oid.m_values.empty()) + return false; + + ThrowIfTypeMismatch(name, typeid(OID), valueType); + *reinterpret_cast(pValue) = m_oid; + return true; + } + else + return GetValueHelper >(this, name, valueType, pValue).Assignable() + CRYPTOPP_GET_FUNCTION_ENTRY(Curve); +} + +template +void DL_GroupParameters_EC::AssignFrom(const NameValuePairs &source) +{ + OID oid; + if (source.GetValue(Name::GroupOID(), oid)) + Initialize(oid); + else + { + EllipticCurve ec; + Point G; + Integer n; + + source.GetRequiredParameter("DL_GroupParameters_EC", Name::Curve(), ec); + source.GetRequiredParameter("DL_GroupParameters_EC", Name::SubgroupGenerator(), G); + source.GetRequiredParameter("DL_GroupParameters_EC", Name::SubgroupOrder(), n); + Integer k = source.GetValueWithDefault(Name::Cofactor(), Integer::Zero()); + + Initialize(ec, G, n, k); + } +} + +template +void DL_GroupParameters_EC::GenerateRandom(RandomNumberGenerator &rng, const NameValuePairs &alg) +{ + try + { + AssignFrom(alg); + } + catch (InvalidArgument &) + { + throw NotImplemented("DL_GroupParameters_EC: curve generation is not implemented yet"); + } +} + +template +void DL_GroupParameters_EC::BERDecode(BufferedTransformation &bt) +{ + byte b; + if (!bt.Peek(b)) + BERDecodeError(); + if (b == OBJECT_IDENTIFIER) + Initialize(OID(bt)); + else + { + BERSequenceDecoder seq(bt); + word32 version; + BERDecodeUnsigned(seq, version, INTEGER, 1, 1); // check version + EllipticCurve ec(seq); + Point G = ec.BERDecodePoint(seq); + Integer n(seq); + Integer k; + bool cofactorPresent = !seq.EndReached(); + if (cofactorPresent) + k.BERDecode(seq); + else + k = Integer::Zero(); + seq.MessageEnd(); + + Initialize(ec, G, n, k); + } +} + +template +void DL_GroupParameters_EC::DEREncode(BufferedTransformation &bt) const +{ + if (m_encodeAsOID && !m_oid.m_values.empty()) + m_oid.DEREncode(bt); + else + { + DERSequenceEncoder seq(bt); + DEREncodeUnsigned(seq, 1); // version + GetCurve().DEREncode(seq); + GetCurve().DEREncodePoint(seq, GetSubgroupGenerator(), m_compress); + m_n.DEREncode(seq); + if (m_k.NotZero()) + m_k.DEREncode(seq); + seq.MessageEnd(); + } +} + +template +Integer DL_GroupParameters_EC::GetCofactor() const +{ + if (!m_k) + { + Integer q = GetCurve().FieldSize(); + Integer qSqrt = q.SquareRoot(); + m_k = (q+2*qSqrt+1)/m_n; + } + + return m_k; +} + +template +Integer DL_GroupParameters_EC::ConvertElementToInteger(const Element &element) const +{ + return ConvertToInteger(element.x); +}; + +template +bool DL_GroupParameters_EC::ValidateGroup(RandomNumberGenerator &rng, unsigned int level) const +{ + bool pass = GetCurve().ValidateParameters(rng, level); + + Integer q = GetCurve().FieldSize(); + pass = pass && m_n!=q; + + if (level >= 2) + { + Integer qSqrt = q.SquareRoot(); + pass = pass && m_n>4*qSqrt; + pass = pass && VerifyPrime(rng, m_n, level-2); + pass = pass && (m_k.IsZero() || m_k == (q+2*qSqrt+1)/m_n); + pass = pass && CheckMOVCondition(q, m_n); + } + + return pass; +} + +template +bool DL_GroupParameters_EC::ValidateElement(unsigned int level, const Element &g, const DL_FixedBasePrecomputation *gpc) const +{ + bool pass = !IsIdentity(g) && GetCurve().VerifyPoint(g); + if (level >= 1) + { + if (gpc) + pass = pass && gpc->Exponentiate(GetGroupPrecomputation(), Integer::One()) == g; + } + if (level >= 2) + { + const Integer &q = GetSubgroupOrder(); + pass = pass && IsIdentity(gpc ? gpc->Exponentiate(GetGroupPrecomputation(), q) : ExponentiateElement(g, q)); + } + return pass; +} + +template +void DL_GroupParameters_EC::SimultaneousExponentiate(Element *results, const Element &base, const Integer *exponents, unsigned int exponentsCount) const +{ + GetCurve().SimultaneousMultiply(results, base, exponents, exponentsCount); +} + +template +DL_GroupParameters_EC::Element DL_GroupParameters_EC::MultiplyElements(const Element &a, const Element &b) const +{ + return GetCurve().Add(a, b); +} + +template +DL_GroupParameters_EC::Element DL_GroupParameters_EC::CascadeExponentiate(const Element &element1, const Integer &exponent1, const Element &element2, const Integer &exponent2) const +{ + return GetCurve().CascadeMultiply(exponent1, element1, exponent2, element2); +} + +template +OID DL_GroupParameters_EC::GetAlgorithmID() const +{ + return ASN1::id_ecPublicKey(); +} + +// ****************************************************************** + +template +void DL_PublicKey_EC::BERDecodeKey2(BufferedTransformation &bt, bool parametersPresent, unsigned int size) +{ + typename EC::Point P; + if (!GetGroupParameters().GetCurve().DecodePoint(P, bt, size)) + BERDecodeError(); + SetPublicElement(P); +} + +template +void DL_PublicKey_EC::DEREncodeKey(BufferedTransformation &bt) const +{ + GetGroupParameters().GetCurve().EncodePoint(bt, GetPublicElement(), GetGroupParameters().GetPointCompression()); +} + +// ****************************************************************** + +template +void DL_PrivateKey_EC::BERDecodeKey2(BufferedTransformation &bt, bool parametersPresent, unsigned int size) +{ + BERSequenceDecoder seq(bt); + word32 version; + BERDecodeUnsigned(seq, version, INTEGER, 1, 1); // check version + + BERGeneralDecoder dec(seq, OCTET_STRING); + if (!dec.IsDefiniteLength()) + BERDecodeError(); + Integer x; + x.Decode(dec, dec.RemainingLength()); + dec.MessageEnd(); + if (!parametersPresent && seq.PeekByte() != (CONTEXT_SPECIFIC | CONSTRUCTED | 0)) + BERDecodeError(); + if (!seq.EndReached() && seq.PeekByte() == (CONTEXT_SPECIFIC | CONSTRUCTED | 0)) + { + BERGeneralDecoder parameters(seq, CONTEXT_SPECIFIC | CONSTRUCTED | 0); + AccessGroupParameters().BERDecode(parameters); + parameters.MessageEnd(); + } + if (!seq.EndReached()) + { + // skip over the public element + SecByteBlock subjectPublicKey; + unsigned int unusedBits; + BERGeneralDecoder publicKey(seq, CONTEXT_SPECIFIC | CONSTRUCTED | 1); + BERDecodeBitString(publicKey, subjectPublicKey, unusedBits); + publicKey.MessageEnd(); + Element Q; + if (!(unusedBits == 0 && GetGroupParameters().GetCurve().DecodePoint(Q, subjectPublicKey, subjectPublicKey.size()))) + BERDecodeError(); + } + seq.MessageEnd(); + + SetPrivateExponent(x); +} + +template +void DL_PrivateKey_EC::DEREncodeKey(BufferedTransformation &bt) const +{ + DERSequenceEncoder privateKey(bt); + DEREncodeUnsigned(privateKey, 1); // version + // SEC 1 ver 1.0 says privateKey (m_d) has the same length as order of the curve + // this will be changed to order of base point in a future version + GetPrivateExponent().DEREncodeAsOctetString(privateKey, GetGroupParameters().GetSubgroupOrder().ByteCount()); + privateKey.MessageEnd(); +} + +// ****************************************************************** + +template class DL_GroupParameters_EC; +template class DL_GroupParameters_EC; +template class DL_PublicKey_EC; +template class DL_PublicKey_EC; +template class DL_PrivateKey_EC; +template class DL_PrivateKey_EC; + +NAMESPACE_END -- cgit v1.2.1