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add vanity address generator toy

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This commit is contained in:
Jeff Becker 2017-08-07 13:50:35 -04:00
parent 70d58ca946
commit 43487324e4
2 changed files with 62 additions and 1 deletions
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5
Makefile
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@ -13,7 +13,7 @@ OBJECTS = $(SOURCES:.cpp=.o)
I2PD_LIB = libi2pd.a
all: keygen keyinfo famtool routerinfo regaddr
all: keygen keyinfo famtool routerinfo regaddr vain
routerinfo: $(OBJECTS)
$(CXX) -o routerinfo routerinfo.o $(LDFLAGS) $(LIBS)
@ -30,6 +30,9 @@ famtool: $(OBJECTS)
regaddr: $(OBJECTS)
$(CXX) -o regaddr regaddr.o $(LDFLAGS) $(LIBS)
vain: $(OBJECTS)
$(CXX) -o vain vanitygen.o $(LDFLAGS) $(LIBS)
$(OBJECTS): libi2pd.a
.SUFFIXES:

58
vanitygen.cpp Normal file
View file

@ -0,0 +1,58 @@
#include <iostream>
#include <fstream>
#include <stdlib.h>
#include <openssl/rand.h>
#include "Crypto.h"
#include "Identity.h"
#include "common/key.hpp"
// XXX: make this faster
static bool check_keys(const std::string & prefix, i2p::data::PrivateKeys & key)
{
return key.GetPublic()->GetIdentHash().ToBase32().substr(0, prefix.length()) == prefix;
}
// XXX: make this faster
static void mutate_keys(uint8_t * buf, i2p::data::PrivateKeys & key)
{
uint8_t * ptr = key.GetPadding();
// TODO: do not hard code for ed25519
RAND_bytes(ptr, 96);
key.RecalculateIdentHash(buf);
}
int main (int argc, char * argv[])
{
if (argc < 2)
{
std::cout << "Usage: " << argv[0] << " filename prefix" << std::endl;
return -1;
}
uint8_t buf[1024] = {0};
std::string prefix(argv[2]);
i2p::crypto::InitCrypto (false);
// default to ed 25519 keys
i2p::data::SigningKeyType type = i2p::data::SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519;
auto keys = i2p::data::PrivateKeys::CreateRandomKeys (type);
// TODO: multi threading
while(!check_keys(prefix, keys))
mutate_keys(buf, keys);
std::ofstream f (argv[1], std::ofstream::binary | std::ofstream::out);
if (f)
{
size_t len = keys.GetFullLen ();
uint8_t * buf = new uint8_t[len];
len = keys.ToBuffer (buf, len);
f.write ((char *)buf, len);
delete[] buf;
std::cout << "Destination " << keys.GetPublic ()->GetIdentHash ().ToBase32 () << " created" << std::endl;
}
else
std::cout << "Can't create file " << argv[1] << std::endl;
i2p::crypto::TerminateCrypto ();
return 0;
}