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#include <time.h> |
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#include <stdio.h> |
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#include <cryptopp/sha.h> |
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#include <cryptopp/osrng.h> |
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#include <cryptopp/dh.h> |
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#include <cryptopp/dsa.h> |
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#include "CryptoConst.h" |
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#include "Identity.h" |
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#include "base64.h" |
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namespace i2p |
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{ |
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namespace data |
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{ |
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Identity& Identity::operator=(const Keys& keys) |
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{ |
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// copy public and signing keys together |
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memcpy (publicKey, keys.publicKey, sizeof (publicKey) + sizeof (signingKey)); |
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memset (&certificate, 0, sizeof (certificate)); |
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return *this; |
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} |
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bool Identity::FromBase64 (const std::string& s) |
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{ |
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size_t count = Base64ToByteStream (s.c_str(), s.length(), publicKey, DEFAULT_IDENTITY_SIZE); |
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return count == DEFAULT_IDENTITY_SIZE; |
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} |
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size_t Identity::FromBuffer (const uint8_t * buf, size_t len) |
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{ |
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memcpy (publicKey, buf, DEFAULT_IDENTITY_SIZE); |
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// TODO: process certificate |
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return DEFAULT_IDENTITY_SIZE; |
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} |
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IdentHash Identity::Hash() const |
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{ |
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IdentHash hash; |
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CryptoPP::SHA256().CalculateDigest(hash, publicKey, DEFAULT_IDENTITY_SIZE); |
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return hash; |
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} |
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PrivateKeys& PrivateKeys::operator=(const Keys& keys) |
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{ |
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pub = keys; |
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memcpy (privateKey, keys.privateKey, 276); // 256 + 20 |
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return *this; |
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} |
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Keys CreateRandomKeys () |
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{ |
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Keys keys; |
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CryptoPP::AutoSeededRandomPool rnd; |
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// encryption |
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CryptoPP::DH dh (i2p::crypto::elgp, i2p::crypto::elgg); |
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dh.GenerateKeyPair(rnd, keys.privateKey, keys.publicKey); |
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// signing |
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CryptoPP::DSA::PrivateKey privateKey; |
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CryptoPP::DSA::PublicKey publicKey; |
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privateKey.Initialize (rnd, i2p::crypto::dsap, i2p::crypto::dsaq, i2p::crypto::dsag); |
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privateKey.MakePublicKey (publicKey); |
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privateKey.GetPrivateExponent ().Encode (keys.signingPrivateKey, 20); |
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publicKey.GetPublicElement ().Encode (keys.signingKey, 128); |
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return keys; |
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} |
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void CreateRandomDHKeysPair (DHKeysPair * keys) |
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{ |
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if (!keys) return; |
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CryptoPP::AutoSeededRandomPool rnd; |
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CryptoPP::DH dh (i2p::crypto::elgp, i2p::crypto::elgg); |
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dh.GenerateKeyPair(rnd, keys->privateKey, keys->publicKey); |
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} |
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RoutingKey CreateRoutingKey (const IdentHash& ident) |
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{ |
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uint8_t buf[41]; // ident + yyyymmdd |
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memcpy (buf, (const uint8_t *)ident, 32); |
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time_t t = time (nullptr); |
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struct tm tm; |
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// WARNING!!! check if it is correct |
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#ifdef _WIN32 |
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gmtime_s(&tm, &t); |
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// <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>-<EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> sprintf'<EFBFBD><EFBFBD>. <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>? |
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// http://msdn.microsoft.com/en-us/library/ce3zzk1k.aspx |
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sprintf_s((char *)(buf + 32), 9, "%4i%2i%2i", tm.tm_year, tm.tm_mon, tm.tm_mday); |
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#else |
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gmtime_r(&t, &tm); |
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// <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>-<EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> sprintf'<EFBFBD><EFBFBD>. <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>? |
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sprintf((char *)(buf + 32), "%4i%2i%2i", tm.tm_year, tm.tm_mon, tm.tm_mday); |
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#endif |
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RoutingKey key; |
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CryptoPP::SHA256().CalculateDigest(key.hash, buf, 40); |
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return key; |
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} |
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XORMetric operator^(const RoutingKey& key1, const RoutingKey& key2) |
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{ |
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XORMetric m; |
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m.metric_ll[0] = key1.hash_ll[0] ^ key2.hash_ll[0]; |
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m.metric_ll[1] = key1.hash_ll[1] ^ key2.hash_ll[1]; |
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m.metric_ll[2] = key1.hash_ll[2] ^ key2.hash_ll[2]; |
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m.metric_ll[3] = key1.hash_ll[3] ^ key2.hash_ll[3]; |
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return m; |
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} |
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} |
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}
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