mirror of https://github.com/PurpleI2P/i2pd
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
123 lines
3.3 KiB
C++
123 lines
3.3 KiB
C++
#include <string.h>
|
|
#include "util.h"
|
|
#include <openssl/evp.h>
|
|
#include <openssl/ssl.h>
|
|
#include "Log.h"
|
|
#include "Crypto.h"
|
|
#include "Family.h"
|
|
|
|
namespace i2p
|
|
{
|
|
namespace data
|
|
{
|
|
Families::Families ()
|
|
{
|
|
}
|
|
|
|
Families::~Families ()
|
|
{
|
|
}
|
|
|
|
void Families::LoadCertificate (const std::string& filename)
|
|
{
|
|
SSL_CTX * ctx = SSL_CTX_new (TLSv1_method ());
|
|
int ret = SSL_CTX_use_certificate_file (ctx, filename.c_str (), SSL_FILETYPE_PEM);
|
|
if (ret)
|
|
{
|
|
SSL * ssl = SSL_new (ctx);
|
|
X509 * cert = SSL_get_certificate (ssl);
|
|
if (cert)
|
|
{
|
|
std::shared_ptr<i2p::crypto::Verifier> verifier;
|
|
// extract issuer name
|
|
char name[100];
|
|
X509_NAME_oneline (X509_get_issuer_name(cert), name, 100);
|
|
char * family = strstr (name, ".family");
|
|
if (family) family[0] = 0;
|
|
auto pkey = X509_get_pubkey (cert);
|
|
int keyType = EVP_PKEY_type(pkey->type);
|
|
switch (keyType)
|
|
{
|
|
case EVP_PKEY_DSA:
|
|
// TODO:
|
|
break;
|
|
case EVP_PKEY_EC:
|
|
{
|
|
EC_KEY * ecKey = EVP_PKEY_get1_EC_KEY (pkey);
|
|
if (ecKey)
|
|
{
|
|
auto group = EC_KEY_get0_group (ecKey);
|
|
if (group)
|
|
{
|
|
int curve = EC_GROUP_get_curve_name (group);
|
|
if (curve == NID_X9_62_prime256v1)
|
|
{
|
|
uint8_t signingKey[64];
|
|
BIGNUM * x = BN_new(), * y = BN_new();
|
|
EC_POINT_get_affine_coordinates_GFp (group,
|
|
EC_KEY_get0_public_key (ecKey), x, y, NULL);
|
|
i2p::crypto::bn2buf (x, signingKey, 32);
|
|
i2p::crypto::bn2buf (y, signingKey + 32, 32);
|
|
BN_free (x); BN_free (y);
|
|
verifier = std::make_shared<i2p::crypto::ECDSAP256Verifier>(signingKey);
|
|
}
|
|
else
|
|
LogPrint (eLogWarning, "Family: elliptic curve ", curve, " is not supported");
|
|
}
|
|
EC_KEY_free (ecKey);
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
LogPrint (eLogWarning, "Family: Certificate key type ", keyType, " is not supported");
|
|
}
|
|
EVP_PKEY_free (pkey);
|
|
if (verifier)
|
|
m_SigningKeys[name] = verifier;
|
|
}
|
|
SSL_free (ssl);
|
|
}
|
|
else
|
|
LogPrint (eLogError, "Family: Can't open certificate file ", filename);
|
|
SSL_CTX_free (ctx);
|
|
}
|
|
|
|
void Families::LoadCertificates ()
|
|
{
|
|
boost::filesystem::path familyDir = i2p::util::filesystem::GetCertificatesDir() / "family";
|
|
|
|
if (!boost::filesystem::exists (familyDir)) return;
|
|
int numCertificates = 0;
|
|
boost::filesystem::directory_iterator end; // empty
|
|
for (boost::filesystem::directory_iterator it (familyDir); it != end; ++it)
|
|
{
|
|
if (boost::filesystem::is_regular_file (it->status()) && it->path ().extension () == ".crt")
|
|
{
|
|
LoadCertificate (it->path ().string ());
|
|
numCertificates++;
|
|
}
|
|
}
|
|
if (numCertificates > 0)
|
|
LogPrint (eLogInfo, "Family: ", numCertificates, " certificates loaded");
|
|
}
|
|
|
|
bool Families::VerifyFamily (const std::string& family, const IdentHash& ident,
|
|
const char * signature, const char * key)
|
|
{
|
|
uint8_t buf[50], signatureBuf[64];
|
|
size_t len = family.length (), signatureLen = strlen (signature);
|
|
memcpy (buf, family.c_str (), len);
|
|
memcpy (buf + len, (const uint8_t *)ident, 32);
|
|
len += 32;
|
|
Base64ToByteStream (signature, signatureLen, signatureBuf, 64);
|
|
auto it = m_SigningKeys.find (family);
|
|
if (it != m_SigningKeys.end ())
|
|
return it->second->Verify (buf, len, signatureBuf);
|
|
// TODO: process key
|
|
return true;
|
|
}
|
|
|
|
}
|
|
}
|
|
|