这篇教程C++ ECDSA_SIG_recover_key_GFp函数代码示例写得很实用，希望能帮到您。
本文整理汇总了C++中ECDSA_SIG_recover_key_GFp函数的典型用法代码示例。如果您正苦于以下问题：C++ ECDSA_SIG_recover_key_GFp函数的具体用法？C++ ECDSA_SIG_recover_key_GFp怎么用？C++ ECDSA_SIG_recover_key_GFp使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。 在下文中一共展示了ECDSA_SIG_recover_key_GFp函数的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。 示例1: ECDSA_do_signbool CECKey::SignCompact(const uint256 &hash, unsigned char *p64, int &rec) { bool fOk = false; ECDSA_SIG *sig = ECDSA_do_sign((unsigned char*)&hash, sizeof(hash), pkey); if (sig==NULL) return false; memset(p64, 0, 64); int nBitsR = BN_num_bits(sig->r); int nBitsS = BN_num_bits(sig->s); if (nBitsR <= 256 && nBitsS <= 256) { std::vector<unsigned char> pubkey; GetPubKey(pubkey, true); for (int i=0; i<4; i++) { CECKey keyRec; if (ECDSA_SIG_recover_key_GFp(keyRec.pkey, sig, (unsigned char*)&hash, sizeof(hash), i, 1) == 1) { std::vector<unsigned char> pubkeyRec; keyRec.GetPubKey(pubkeyRec, true); if (pubkeyRec == pubkey) { rec = i; fOk = true; break; } } } assert(fOk); BN_bn2bin(sig->r,&p64[32-(nBitsR+7)/8]); BN_bn2bin(sig->s,&p64[64-(nBitsS+7)/8]); } ECDSA_SIG_free(sig); return fOk;}
开发者ID:flirtcoin，项目名称:flirtcoin，代码行数:30，
示例2: ECDSA_SIG_new// reconstruct public key from a compact signature// This is only slightly more CPU intensive than just verifying it.// If this function succeeds, the recovered public key is guaranteed to be valid// (the signature is a valid signature of the given data for that key)bool CKey::SetCompactSignature(uint256 hash, const std::vector<unsigned char>& vchSig){ if (vchSig.size() != 65) return false; int nV = vchSig[0]; if (nV<27 || nV>=35) return false; ECDSA_SIG *sig = ECDSA_SIG_new(); BN_bin2bn(&vchSig[1],32,sig->r); BN_bin2bn(&vchSig[33],32,sig->s); EC_KEY_free(pkey); pkey = EC_KEY_new_by_curve_name(NID_secp256k1); if (nV >= 31) { SetCompressedPubKey(); nV -= 4; } if (ECDSA_SIG_recover_key_GFp(pkey, sig, (unsigned char*)&hash, sizeof(hash), nV - 27, 0) == 1) { fSet = true; ECDSA_SIG_free(sig); return true; } return false;}
开发者ID:uscoin，项目名称:uscoin，代码行数:30，
示例3: ECDSA_do_sign// create a compact signature (65 bytes), which allows reconstructing the used public key// The format is one header byte, followed by two times 32 bytes for the serialized r and s values.// The header byte: 0x1B = first key with even y, 0x1C = first key with odd y,// 0x1D = second key with even y, 0x1E = second key with odd ybool CKey::SignCompact(uint256 hash, std::vector<unsigned char> &vchSig){ bool fOk = false; ECDSA_SIG *sig = ECDSA_do_sign((unsigned char *)&hash, sizeof(hash), pkey); if (sig == NULL) return false; vchSig.clear(); vchSig.resize(65, 0); int nBitsR = BN_num_bits(sig->r); int nBitsS = BN_num_bits(sig->s); if (nBitsR <= 256 && nBitsS <= 256) { int nRecId = -1; for (int i = 0; i < 4; i++) { CKey keyRec; keyRec.fSet = true; if (fCompressedPubKey) keyRec.SetCompressedPubKey(); if (ECDSA_SIG_recover_key_GFp(keyRec.pkey, sig, (unsigned char *)&hash, sizeof(hash), i, 1) == 1) if (keyRec.GetPubKey() == this->GetPubKey()) { nRecId = i; break; } } if (nRecId == -1) throw key_error("CKey::SignCompact() : unable to construct recoverable key"); vchSig[0] = nRecId + 27 + (fCompressedPubKey ? 4 : 0); BN_bn2bin(sig->r, &vchSig[33 - (nBitsR + 7) / 8]); BN_bn2bin(sig->s, &vchSig[65 - (nBitsS + 7) / 8]); fOk = true; } ECDSA_SIG_free(sig); return fOk;}
开发者ID:66maintainer，项目名称:66coin，代码行数:39，
示例4: ECDSA_SIG_newbool CECKey::Recover(const uint256 &hash, const unsigned char *p64, int rec){ if (rec<0 || rec>=3) return false; ECDSA_SIG *sig = ECDSA_SIG_new(); BN_bin2bn(&p64[0], 32, sig->r); BN_bin2bn(&p64[32], 32, sig->s); bool ret = ECDSA_SIG_recover_key_GFp(pkey, sig, (unsigned char*)&hash, sizeof(hash), rec, 0) == 1; ECDSA_SIG_free(sig); return ret;}
开发者ID:zebbra2014，项目名称:bitcredit，代码行数:11，
示例5: ECDSA_do_sign// create a compact signature (65 bytes), which allows reconstructing the used public key// The format is one header byte, followed by two times 32 bytes for the serialized r and s values.// The header byte: 0x1B = first key with even y, 0x1C = first key with odd y,// 0x1D = second key with even y, 0x1E = second key with odd ybool CKey::SignCompact(uint256 hash, std::vector<unsigned char>& vchSig){ bool fOk = false; ECDSA_SIG *sig = ECDSA_do_sign((unsigned char*)&hash, sizeof(hash), pkey); if (sig==NULL) return false; const EC_GROUP *group = EC_KEY_get0_group(pkey); CBigNum order, halforder; EC_GROUP_get_order(group, &order, NULL); BN_rshift1(&halforder, &order); // enforce low S values, by negating the value (modulo the order) if above order/2. if (BN_cmp(sig->s, &halforder) > 0) { BN_sub(sig->s, &order, sig->s); } vchSig.clear(); vchSig.resize(65,0); int nBitsR = BN_num_bits(sig->r); int nBitsS = BN_num_bits(sig->s); if (nBitsR <= 256 && nBitsS <= 256) { int nRecId = -1; for (int i=0; i<4; i++) { CKey keyRec; keyRec.fSet = true; if (fCompressedPubKey) keyRec.SetCompressedPubKey(); if (ECDSA_SIG_recover_key_GFp(keyRec.pkey, sig, (unsigned char*)&hash, sizeof(hash), i, 1) == 1) if (keyRec.GetPubKey() == this->GetPubKey()) { nRecId = i; break; } } if (nRecId == -1) { ECDSA_SIG_free(sig); throw key_error("CKey::SignCompact() : unable to construct recoverable key"); } vchSig[0] = nRecId+27+(fCompressedPubKey ? 4 : 0); BN_bn2bin(sig->r,&vchSig[33-(nBitsR+7)/8]); BN_bn2bin(sig->s,&vchSig[65-(nBitsS+7)/8]); fOk = true; } ECDSA_SIG_free(sig); return fOk;}
开发者ID:likecoin-script，项目名称:novacoin，代码行数:53，
示例6: ECDSA_SIG_newbool CECKey::Recover(const uint256 &hash, const unsigned char *p64, int rec){ if (rec<0 || rec>=3) return false; ECDSA_SIG *sig = ECDSA_SIG_new(); // OpenSSL-1.1 compatibility layer:#if OPENSSL_VERSION_NUMBER > 0x1000ffffL BIGNUM *sig_r=BN_new(); BIGNUM *sig_s=BN_new(); BN_bin2bn(&p64[0], 32, sig_r); BN_bin2bn(&p64[32], 32, sig_s); ECDSA_SIG_set0(sig, sig_r, sig_s);#else BN_bin2bn(&p64[0], 32, sig->r); BN_bin2bn(&p64[32], 32, sig->s);#endif // bool ret = ECDSA_SIG_recover_key_GFp(pkey, sig, (unsigned char*)&hash, sizeof(hash), rec, 0) == 1; ECDSA_SIG_free(sig); return ret;}
开发者ID:Animecointeam，项目名称:Animecoin，代码行数:21，
示例7: ECDSA_SIG_new// reconstruct public key from a compact signature// This is only slightly more CPU intensive than just verifying it.// If this function succeeds, the recovered public key is guaranteed to be valid// (the signature is a valid signature of the given data for that key)bool CKey::SetCompactSignature(uint256 hash, const std::vector<unsigned char>& vchSig){ if (vchSig.size() != 65) return false; int nV = vchSig[0]; if (nV<27 || nV>=35) return false; ECDSA_SIG *sig = ECDSA_SIG_new(); if (!sig) return false; #if OPENSSL_VERSION_NUMBER > 0x1000ffffL // sig_r and sig_s are deallocated by ECDSA_SIG_free(sig); BIGNUM *sig_r = BN_bin2bn(&vchSig[1],32,BN_new()); BIGNUM *sig_s = BN_bin2bn(&vchSig[33],32,BN_new()); if (!sig_r || !sig_s) return false; // copy and transfer ownership to sig ECDSA_SIG_set0(sig, sig_r, sig_s); #else BN_bin2bn(&vchSig[1],32,sig->r); BN_bin2bn(&vchSig[33],32,sig->s); #endif EC_KEY_free(pkey); pkey = EC_KEY_new_by_curve_name(NID_secp256k1); if (nV >= 31) { SetCompressedPubKey(); nV -= 4; } if (ECDSA_SIG_recover_key_GFp(pkey, sig, (unsigned char*)&hash, sizeof(hash), nV - 27, 0) == 1) { fSet = true; ECDSA_SIG_free(sig); return true; } ECDSA_SIG_free(sig); return false;}
开发者ID:mikaelh2，项目名称:primecoin，代码行数:42，
注：本文中的ECDSA_SIG_recover_key_GFp函数示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。
C++ ECDSA_size函数代码示例
C++ ECDSA_SIG_new函数代码示例 |
