Public_PEM Keystore::public_PEM()
{
auto pem = Botan::X509::PEM_encode(public_key());
//printf("PEM:\n%s\n", pem.c_str());
//auto pem = Botan::PEM_Code::encode(data, "PUBLIC KEY");
return pem;
}
int main()
{
ifstream common("common.ecs"); /* construct file I/O streams */
ifstream public_key("public.ecs");
ifstream message;
ifstream signature;
ECn G,Pub;
int bits,ep;
Big a,b,p,q,x,y,v,u1,u2,r,s,h;
char ifname[13],ofname[13];
miracl *mip=&precision;
/* get public data */
common >> bits;
mip->IOBASE=16;
common >> p >> a >> b >> q >> x >> y;
mip->IOBASE=10;
ecurve(a,b,p,MR_PROJECTIVE);
G=ECn(x,y);
/* get public key of signer */
public_key >> ep >> x;
Pub=ECn(x,ep); // decompress
/* get message */
cout << "signed file = " ;
cin.sync();
cin.getline(ifname,13);
strcpy(ofname,ifname);
strip(ofname);
strcat(ofname,".ecs");
message.open(ifname,ios::binary|ios::in|ios::nocreate);
if (!message)
{ /* no message */
cout << "Unable to open file " << ifname << "\n";
return 0;
}
h=hash(message);
signature.open(ofname,ios::in|ios::nocreate);
if (!signature)
{ /* no signature */
cout << "signature file " << ofname << " does not exist\n";
return 0;
}
signature >> r >> s;
if (r>=q || s>=q)
{
cout << "Signature is NOT verified\n";
return 0;
}
s=inverse(s,q);
u1=(h*s)%q;
u2=(r*s)%q;
G=mul(u2,Pub,u1,G);
G.get(v);
v%=q;
if (v==r) cout << "Signature is verified\n";
else cout << "Signature is NOT verified\n";
return 0;
}
public_key private_key::get_public_key()const
{
FC_ASSERT( my->_key != empty_priv );
public_key_data pub;
unsigned int pk_len;
FC_ASSERT( secp256k1_ec_pubkey_create( detail::_get_context(), (unsigned char*) pub.begin(), (int*) &pk_len, (unsigned char*) my->_key.data(), 1 ) );
FC_ASSERT( pk_len == pub.size() );
return public_key(pub);
}
static bool generate_keys(ScopedEVP_PKEY &private_key_out,
ScopedEVP_PKEY &public_key_out)
{
ScopedEVP_PKEY private_key(EVP_PKEY_new(), EVP_PKEY_free);
ScopedEVP_PKEY public_key(EVP_PKEY_new(), EVP_PKEY_free);
ScopedRSA rsa(RSA_new(), RSA_free);
ScopedBIGNUM e(BN_new(), BN_free);
if (!private_key) {
LOGE("Failed to allocate private key");
openssl_log_errors();
return false;
}
if (!public_key) {
LOGE("Failed to allocate public key");
openssl_log_errors();
return false;
}
if (!rsa) {
LOGE("Failed to allocate RSA");
openssl_log_errors();
return false;
}
if (!e) {
LOGE("Failed to allocate BIGNUM");
openssl_log_errors();
return false;
}
BN_set_word(e.get(), RSA_F4);
if (RSA_generate_key_ex(rsa.get(), 2048, e.get(), nullptr) < 0) {
LOGE("RSA_generate_key_ex() failed");
openssl_log_errors();
return false;
}
if (!EVP_PKEY_assign_RSA(private_key.get(), RSAPrivateKey_dup(rsa.get()))) {
LOGE("EVP_PKEY_assign_RSA() failed for private key");
openssl_log_errors();
return false;
}
if (!EVP_PKEY_assign_RSA(public_key.get(), RSAPublicKey_dup(rsa.get()))) {
LOGE("EVP_PKEY_assign_RSA() failed for public key");
openssl_log_errors();
return false;
}
private_key_out = std::move(private_key);
public_key_out = std::move(public_key);
return true;
}
SigVerifyResult verify_signature(const char *path, const char *sig_path)
{
for (const std::string &hex_der : valid_certs) {
std::string der;
if (!hex2bin(hex_der, der)) {
LOGE("Failed to convert hex-encoded certificate to binary: %s",
hex_der.c_str());
return SigVerifyResult::Failure;
}
// Cast to (void *) is okay since BIO_new_mem_buf() creates a read-only
// BIO object
ScopedBIO bio_x509_cert(BIO_new_mem_buf(
der.data(), static_cast<int>(der.size())), BIO_free);
if (!bio_x509_cert) {
LOGE("Failed to create BIO for X509 certificate: %s",
hex_der.c_str());
openssl_log_errors();
return SigVerifyResult::Failure;
}
// Load DER-encoded certificate
ScopedX509 cert(d2i_X509_bio(bio_x509_cert.get(), nullptr), X509_free);
if (!cert) {
LOGE("Failed to load X509 certificate: %s", hex_der.c_str());
openssl_log_errors();
return SigVerifyResult::Failure;
}
// Get public key from certificate
ScopedEVP_PKEY public_key(X509_get_pubkey(cert.get()), EVP_PKEY_free);
if (!public_key) {
LOGE("Failed to load public key from X509 certificate: %s",
hex_der.c_str());
openssl_log_errors();
return SigVerifyResult::Failure;
}
SigVerifyResult result =
verify_signature_with_key(path, sig_path, *public_key);
if (result == SigVerifyResult::Invalid) {
// Keep trying ...
continue;
}
return result;
}
return SigVerifyResult::Invalid;
}
byte_array
dsa160_key::id() const
{
assert(type() != invalid);
crypto::hash::value hash = sha256::hash(public_key());
byte_array id(hash);
// Only use 160 bits of the hash to produce the ID,
// because the cryptographic strength of the resulting ID
// is limited anyway by the 160-bit digest size, below.
// We're not using SHA-256 to get more than 160 bits of security,
// but in hopes it will withstand the recent attacks against SHA-1.
id.resize(160/8);
return id;
}
TEST(SignTest, TestLoadValidPemKeys)
{
ScopedEVP_PKEY private_key(nullptr, EVP_PKEY_free);
ScopedEVP_PKEY public_key(nullptr, EVP_PKEY_free);
ScopedBIO bio_private_key_enc(BIO_new(BIO_s_mem()), BIO_free);
ASSERT_TRUE(!!bio_private_key_enc);
ScopedBIO bio_private_key_noenc(BIO_new(BIO_s_mem()), BIO_free);
ASSERT_TRUE(!!bio_private_key_noenc);
ScopedBIO bio_public_key(BIO_new(BIO_s_mem()), BIO_free);
ASSERT_TRUE(!!bio_public_key);
// Generate keys
ASSERT_TRUE(generate_keys(private_key, public_key));
// Write keys
ASSERT_TRUE(PEM_write_bio_PrivateKey(bio_private_key_enc.get(),
private_key.get(), EVP_des_ede3_cbc(),
nullptr, 0, nullptr,
const_cast<char *>("testing")));
ASSERT_TRUE(PEM_write_bio_PrivateKey(bio_private_key_noenc.get(),
private_key.get(), nullptr, nullptr, 0,
nullptr, nullptr));
ASSERT_TRUE(PEM_write_bio_PUBKEY(bio_public_key.get(), public_key.get()));
// Read back the keys
ScopedEVP_PKEY private_key_enc_read(mb::sign::load_private_key(
bio_private_key_enc.get(), mb::sign::KEY_FORMAT_PEM, "testing"),
EVP_PKEY_free);
ASSERT_TRUE(!!private_key_enc_read);
ScopedEVP_PKEY private_key_noenc_read(mb::sign::load_private_key(
bio_private_key_noenc.get(), mb::sign::KEY_FORMAT_PEM, nullptr),
EVP_PKEY_free);
ASSERT_TRUE(!!private_key_noenc_read);
ScopedEVP_PKEY public_key_read(mb::sign::load_public_key(
bio_public_key.get(), mb::sign::KEY_FORMAT_PEM, "testing"),
EVP_PKEY_free);
ASSERT_TRUE(!!public_key_read);
// Compare keys
ASSERT_EQ(EVP_PKEY_cmp(private_key.get(), private_key_enc_read.get()), 1);
ASSERT_EQ(EVP_PKEY_cmp(private_key.get(), private_key_noenc_read.get()), 1);
ASSERT_EQ(EVP_PKEY_cmp(public_key.get(), public_key_read.get()), 1);
}
TEST(SignTest, TestLoadValidPemKeysWithInvalidPassphrase)
{
ScopedEVP_PKEY private_key(nullptr, EVP_PKEY_free);
ScopedEVP_PKEY public_key(nullptr, EVP_PKEY_free);
ScopedBIO bio(BIO_new(BIO_s_mem()), BIO_free);
ASSERT_TRUE(!!bio);
// Generate keys
ASSERT_TRUE(generate_keys(private_key, public_key));
// Write key
ASSERT_TRUE(PEM_write_bio_PrivateKey(bio.get(), private_key.get(),
EVP_des_ede3_cbc(), nullptr, 0,
nullptr,
const_cast<char *>("testing")));
// Read back the key using invalid password
ScopedEVP_PKEY private_key_read(mb::sign::load_private_key(
bio.get(), mb::sign::KEY_FORMAT_PEM, "gnitset"),
EVP_PKEY_free);
ASSERT_FALSE(private_key_read);
}
TEST(SignTest, TestLoadInvalidPkcs12PrivateKey)
{
ScopedBIO bio_private_key(BIO_new(BIO_s_mem()), BIO_free);
ASSERT_TRUE(!!bio_private_key);
ScopedBIO bio_public_key(BIO_new(BIO_s_mem()), BIO_free);
ASSERT_TRUE(!!bio_public_key);
// Fill with garbage
ASSERT_EQ(BIO_write(bio_private_key.get(),
"abcdefghijklmnopqrstuvwxyz", 26), 26);
ASSERT_EQ(BIO_write(bio_public_key.get(),
"zyxwvutsrqponmlkjihgfedcba", 26), 26);
ScopedEVP_PKEY private_key(mb::sign::load_private_key(
bio_private_key.get(), mb::sign::KEY_FORMAT_PKCS12, nullptr),
EVP_PKEY_free);
ASSERT_FALSE(private_key);
ScopedEVP_PKEY public_key(mb::sign::load_public_key(
bio_public_key.get(), mb::sign::KEY_FORMAT_PKCS12, nullptr),
EVP_PKEY_free);
ASSERT_FALSE(public_key);
}
PKCS11_EC_PrivateKey::PKCS11_EC_PrivateKey(Session& session, const std::vector<uint8_t>& ec_params,
const EC_PrivateKeyGenerationProperties& props)
: Object(session)
{
m_domain_params = EC_Group(ec_params);
EC_PublicKeyGenerationProperties pub_key_props(ec_params);
pub_key_props.set_verify(true);
pub_key_props.set_private(false);
pub_key_props.set_token(false); // don't create a persistent public key object
ObjectHandle pub_key_handle = CK_INVALID_HANDLE;
ObjectHandle priv_key_handle = CK_INVALID_HANDLE;
Mechanism mechanism = { CKM_EC_KEY_PAIR_GEN, nullptr, 0 };
session.module()->C_GenerateKeyPair(session.handle(), &mechanism,
pub_key_props.data(), pub_key_props.count(), props.data(), props.count(),
&pub_key_handle, &priv_key_handle);
this->reset_handle(priv_key_handle);
Object public_key(session, pub_key_handle);
m_public_key = decode_public_point(public_key.get_attribute_value(AttributeType::EcPoint), m_domain_params.get_curve());
}
int main()
{ /* encode using public key */
Big e,m,y,ke,mn,mx;
ifstream public_key("public.key");
ifstream input_file;
ofstream output_file;
static char line[500];
static char buff[256];
static char ifname[13],ofname[13];
BOOL fli,last;
int i,ipt,klen;
miracl *mip=&precision;
mip->IOBASE=60;
public_key >> ke;
mn=root(ke,3);
mx=mn*mn*mn-mn*mn;
/* find key length in characters */
klen=bits(mx)/7;
cout << "file to be encoded = " ;
cin.getline(ifname,13);
fli=FALSE;
if (strlen(ifname)>0) fli=TRUE;
if (fli)
{ /* set up input file */
strcpy(ofname,ifname);
strip(ofname);
strcat(ofname,".rsa");
input_file.open(ifname,ios::in|ios::nocreate);
if (!input_file)
{
cout << "Unable to open file " << ifname << "\n";
return 0;
}
cout << "encoding message\n";
}
else
{ /* accept input from keyboard */
cout << "output filename = ";
cin >> ofname;
strip(ofname);
strcat(ofname,".rsa");
cout << "input message - finish with cntrl z\n";
}
output_file.open(ofname);
ipt=0;
last=FALSE;
while (!last)
{ /* encode line by line */
if (fli)
{
input_file.getline(&line[ipt],132);
if (input_file.eof() || input_file.fail()) last=TRUE;
}
else
{
cin.getline(&line[ipt],132);
if (cin.eof() || cin.fail()) last=TRUE;
}
strcat(line,"\n");
ipt=strlen(line);
if (ipt<klen && !last) continue;
while (ipt>=klen)
{ /* chop up into klen-sized chunks and encode */
for (i=0;i<klen;i++)
buff[i]=line[i];
buff[klen]='\0';
for (i=klen;i<=ipt;i++)
line[i-klen]=line[i];
ipt-=klen;
mip->IOBASE=128;
m=buff;
e=pow(m,3,ke);
mip->IOBASE=60;
output_file << e << endl;
}
if (last && ipt>0)
{ /* now deal with left overs */
mip->IOBASE=128;
m=line;
if (m<mn)
{ /* pad out with random number if necessary */
m+=mn*(mn*mn-rand(mn));
}
e=pow(m,3,ke);
mip->IOBASE=60;
output_file << e << endl;
}
}
return 0;
}
RefPtr<DtlsIdentity> DtlsIdentity::Generate() {
UniquePK11SlotInfo slot(PK11_GetInternalSlot());
if (!slot) {
return nullptr;
}
uint8_t random_name[16];
SECStatus rv = PK11_GenerateRandomOnSlot(slot.get(), random_name,
sizeof(random_name));
if (rv != SECSuccess)
return nullptr;
std::string name;
char chunk[3];
for (size_t i = 0; i < sizeof(random_name); ++i) {
SprintfLiteral(chunk, "%.2x", random_name[i]);
name += chunk;
}
std::string subject_name_string = "CN=" + name;
UniqueCERTName subject_name(CERT_AsciiToName(subject_name_string.c_str()));
if (!subject_name) {
return nullptr;
}
unsigned char paramBuf[12]; // OIDs are small
SECItem ecdsaParams = { siBuffer, paramBuf, sizeof(paramBuf) };
SECOidData* oidData = SECOID_FindOIDByTag(SEC_OID_SECG_EC_SECP256R1);
if (!oidData || (oidData->oid.len > (sizeof(paramBuf) - 2))) {
return nullptr;
}
ecdsaParams.data[0] = SEC_ASN1_OBJECT_ID;
ecdsaParams.data[1] = oidData->oid.len;
memcpy(ecdsaParams.data + 2, oidData->oid.data, oidData->oid.len);
ecdsaParams.len = oidData->oid.len + 2;
SECKEYPublicKey *pubkey;
UniqueSECKEYPrivateKey private_key(
PK11_GenerateKeyPair(slot.get(),
CKM_EC_KEY_PAIR_GEN, &ecdsaParams, &pubkey,
PR_FALSE, PR_TRUE, nullptr));
if (private_key == nullptr)
return nullptr;
UniqueSECKEYPublicKey public_key(pubkey);
pubkey = nullptr;
UniqueCERTSubjectPublicKeyInfo spki(
SECKEY_CreateSubjectPublicKeyInfo(public_key.get()));
if (!spki) {
return nullptr;
}
UniqueCERTCertificateRequest certreq(
CERT_CreateCertificateRequest(subject_name.get(), spki.get(), nullptr));
if (!certreq) {
return nullptr;
}
// From 1 day before todayto 30 days after.
// This is a sort of arbitrary range designed to be valid
// now with some slack in case the other side expects
// some before expiry.
//
// Note: explicit casts necessary to avoid
// warning C4307: '*' : integral constant overflow
static const PRTime oneDay = PRTime(PR_USEC_PER_SEC)
* PRTime(60) // sec
* PRTime(60) // min
* PRTime(24); // hours
PRTime now = PR_Now();
PRTime notBefore = now - oneDay;
PRTime notAfter = now + (PRTime(30) * oneDay);
UniqueCERTValidity validity(CERT_CreateValidity(notBefore, notAfter));
if (!validity) {
return nullptr;
}
unsigned long serial;
// Note: This serial in principle could collide, but it's unlikely
rv = PK11_GenerateRandomOnSlot(slot.get(),
reinterpret_cast<unsigned char *>(&serial),
sizeof(serial));
if (rv != SECSuccess) {
return nullptr;
}
UniqueCERTCertificate certificate(
CERT_CreateCertificate(serial, subject_name.get(), validity.get(),
certreq.get()));
if (!certificate) {
return nullptr;
}
PLArenaPool *arena = certificate->arena;
rv = SECOID_SetAlgorithmID(arena, &certificate->signature,
SEC_OID_ANSIX962_ECDSA_SHA256_SIGNATURE, 0);
if (rv != SECSuccess)
return nullptr;
// Set version to X509v3.
*(certificate->version.data) = SEC_CERTIFICATE_VERSION_3;
certificate->version.len = 1;
SECItem innerDER;
innerDER.len = 0;
innerDER.data = nullptr;
if (!SEC_ASN1EncodeItem(arena, &innerDER, certificate.get(),
SEC_ASN1_GET(CERT_CertificateTemplate))) {
return nullptr;
}
SECItem *signedCert = PORT_ArenaZNew(arena, SECItem);
if (!signedCert) {
return nullptr;
}
rv = SEC_DerSignData(arena, signedCert, innerDER.data, innerDER.len,
private_key.get(),
SEC_OID_ANSIX962_ECDSA_SHA256_SIGNATURE);
if (rv != SECSuccess) {
return nullptr;
}
certificate->derCert = *signedCert;
RefPtr<DtlsIdentity> identity = new DtlsIdentity(Move(private_key),
Move(certificate),
ssl_kea_ecdh);
return identity.forget();
}
/** decodes the big int as base64 string, or a number */
void from_variant( const variant& v, public_key& bi, uint32_t max_depth )
{
bi = public_key( v.as<std::vector<char> >(max_depth) );
}
int main() {
// Timer
auto start = std::chrono::steady_clock::now();
auto end = std::chrono::steady_clock::now();
std::cout << "Timings:" << std::endl;
// Precomputation in the clear
ECPrecomputation<FV::mess_t> precomputation;
// Point G and variable for G+G
ECPoint<FV::mess_t> G(G_x, G_y, G_z, G_t), GpG;
// Compute 4G = (G+G)+(G+G) with 2 EC additions
start = std::chrono::steady_clock::now();
ec_addition(GpG, G, G, precomputation);
ec_addition(GpG, GpG, GpG, precomputation);
end = std::chrono::steady_clock::now();
std::cout << "\tEC Addition in clear: \t\t"
<< get_time_us(start, end, 2) << " us" << std::endl;
FV::mess_t result_x = GpG.X + FV::params::plaintextModulus<mpz_class>::value();
FV::mess_t result_y = GpG.Y + FV::params::plaintextModulus<mpz_class>::value();
// Multiply by the inverse of Z
FV::mess_t iZ = GpG.Z.invert();
GpG.X *= iZ;
GpG.Y *= iZ;
/**
* Let's do it homomorphically
*/
// Keygen
start = std::chrono::steady_clock::now();
FV::sk_t secret_key;
end = std::chrono::steady_clock::now();
std::cout << "\tSecret key generation: \t\t"
<< get_time_us(start, end, 1) << " us" << std::endl;
start = std::chrono::steady_clock::now();
FV::evk_t evaluation_key(secret_key, 32);
end = std::chrono::steady_clock::now();
std::cout << "\tEvaluation key generation: \t"
<< get_time_us(start, end, 1) << " us" << std::endl;
start = std::chrono::steady_clock::now();
FV::pk_t public_key(secret_key, evaluation_key);
end = std::chrono::steady_clock::now();
std::cout << "\tPublic key generation: \t\t"
<< get_time_us(start, end, 1) << " us" << std::endl;
// Precomputation
ECPrecomputation<FV::ciphertext_t> precomputation_encrypted;
// Point G and variable for G+G
FV::ciphertext_t eG_x, eG_y, eG_z, eG_t;
FV::mess_t mG_x(G_x), mG_y(G_y), mG_z(G_z), mG_t(G_t);
start = std::chrono::steady_clock::now();
FV::encrypt(eG_x, public_key, mG_x);
FV::encrypt(eG_y, public_key, mG_y);
FV::encrypt(eG_z, public_key, mG_z);
FV::encrypt(eG_t, public_key, mG_t);
end = std::chrono::steady_clock::now();
std::cout << "\tPoint Encryption: \t\t"
<< get_time_us(start, end, 1) << " us" << std::endl;
ECPoint<FV::ciphertext_t> eG(eG_x, eG_y, eG_z, eG_t), eGpG;
// Compute 4G = (G+G)+(G+G) with 2 EC additions
start = std::chrono::steady_clock::now();
ec_addition<FV::ciphertext_t>(eGpG, eG, eG, precomputation_encrypted);
ec_addition<FV::ciphertext_t>(eGpG, eGpG, eGpG, precomputation_encrypted);
end = std::chrono::steady_clock::now();
std::cout << "\tHomom. EC Addition: \t\t"
<< get_time_us(start, end, 2) / 1000 << " ms"
<< std::endl;
start = std::chrono::steady_clock::now();
FV::decrypt(mG_x, secret_key, public_key, eGpG.X);
FV::decrypt(mG_y, secret_key, public_key, eGpG.Y);
FV::decrypt(mG_z, secret_key, public_key, eGpG.Z);
FV::decrypt(mG_t, secret_key, public_key, eGpG.T);
end = std::chrono::steady_clock::now();
std::cout << "\tEC Point Decryption: \t\t"
<< get_time_us(start, end, 1) << " us" << std::endl;
// Noise
unsigned noise_x = noise(mG_x, secret_key, public_key, eGpG.X);
std::cout << "noise in ciphertext: \t" << noise_x << "/"
<< public_key.noise_max << std::endl;
// Multiply by the inverse of Z
FV::mess_t invZ = mG_z.invert();
mG_x *= invZ;
mG_y *= invZ;
// Results
std::cout << "4*G (clear): \t\t(" << GpG.X << "," << GpG.Y << ")"
<< std::endl;
std::cout << "4*G (enc.): \t\t(" << mG_x << "," << mG_y << ")" << std::endl;
return 0;
}
/*
* Copyright (c) 2011-2013 libbitcoin developers (see AUTHORS)
*
* This file is part of libbitcoin.
*
* libbitcoin is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License with
* additional permissions to the one published by the Free Software
* Foundation, either version 3 of the License, or (at your option)
* any later version. For more information see LICENSE.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
block_type step(const block_point& root, const block_point& head, size_t n)
{
std::cout << "Stepping " << n << std::endl;
transaction_type coinbase_tx = create_coinbase(public_key());
const block_type* prev_blk = &head.blk;
static hash_digest txh6 = null_hash;
if (n == 4)
{
prev_blk = lookup(root, {0, 0, 0});
output_point prevout{
hash_transaction(root.prefix_chain[2].transactions[0]), 0};
transaction_type tx = construct_transaction(prevout);
txh6 = hash_transaction(tx);
return mine_next(*prev_blk, {coinbase_tx, tx});
}
else if (n == 5)
{
prev_blk = lookup(root, {0, 0, 0, 0});
}
else if (n == 6)
{
output_point prevout{
hash_transaction(root.prefix_chain[1].transactions[0]), 0};
transaction_type tx = construct_transaction(prevout);
txh6 = hash_transaction(tx);
return mine_next(*prev_blk, {coinbase_tx, tx});
}
else if (n == 7)
{
BITCOIN_ASSERT(txh6 != null_hash);
output_point prevout{txh6, 0};
transaction_type tx = construct_transaction(prevout);
return mine_next(*prev_blk, {coinbase_tx, tx});
}
else if (n == 8)
{
prev_blk = lookup(root, {0, 0, 0});
}
else if (n == 9)
{
BITCOIN_ASSERT(txh6 != null_hash);
output_point prevout{txh6, 0};
transaction_type tx = construct_transaction(prevout);
return mine_next(*prev_blk, {coinbase_tx, tx});
}
else if (n == 11)
{
prev_blk = lookup(root, {0, 0, 0, 1});
}
else if (n == 15)
{
// Attempt double spend.
output_point prevout{
hash_transaction(root.prefix_chain[2].transactions[0]), 0};
transaction_type tx = construct_transaction(prevout);
txh6 = hash_transaction(tx);
return mine_next(*prev_blk, {coinbase_tx, tx});
}
else if (n == 16)
{
prev_blk = lookup(root, {0, 0, 0, 2, 0});
}
else if (n == 20)
{
BITCOIN_ASSERT(txh6 != null_hash);
output_point prevout{txh6, 0};
transaction_type tx = construct_transaction(prevout);
return mine_next(*prev_blk, {coinbase_tx, tx});
}
return mine_next(*prev_blk, {coinbase_tx});
}
public_key public_key::from_key_data( const public_key_data &data ) {
return public_key(data);
}
/** decodes the big int as base64 string, or a number */
void from_variant( const variant& v, public_key& bi )
{
bi = public_key( v.as<std::vector<char> >() );
}