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/*
* PK Key
* (C) 1999-2010,2016 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include <botan/pk_algs.h>
#include <botan/oids.h>
#include <botan/parsing.h>
#if defined(BOTAN_HAS_RSA)
#include <botan/rsa.h>
#endif
#if defined(BOTAN_HAS_DSA)
#include <botan/dsa.h>
#endif
#if defined(BOTAN_HAS_DL_GROUP)
#include <botan/dl_group.h>
#endif
#if defined(BOTAN_HAS_DIFFIE_HELLMAN)
#include <botan/dh.h>
#endif
#if defined(BOTAN_HAS_ECC_PUBLIC_KEY_CRYPTO)
#include <botan/ecc_key.h>
#endif
#if defined(BOTAN_HAS_ECDSA)
#include <botan/ecdsa.h>
#endif
#if defined(BOTAN_HAS_ECGDSA)
#include <botan/ecgdsa.h>
#endif
#if defined(BOTAN_HAS_ECKCDSA)
#include <botan/eckcdsa.h>
#endif
#if defined(BOTAN_HAS_ED25519)
#include <botan/ed25519.h>
#endif
#if defined(BOTAN_HAS_GOST_34_10_2001)
#include <botan/gost_3410.h>
#endif
#if defined(BOTAN_HAS_ELGAMAL)
#include <botan/elgamal.h>
#endif
#if defined(BOTAN_HAS_ECDH)
#include <botan/ecdh.h>
#endif
#if defined(BOTAN_HAS_CURVE_25519)
#include <botan/curve25519.h>
#endif
#if defined(BOTAN_HAS_MCELIECE)
#include <botan/mceliece.h>
#endif
#if defined(BOTAN_HAS_XMSS)
#include <botan/xmss.h>
#endif
#if defined(BOTAN_HAS_SM2)
#include <botan/sm2.h>
#include <botan/sm2_enc.h>
#endif
#if defined(BOTAN_HAS_OPENSSL)
#include <botan/internal/openssl.h>
#endif
namespace Botan {
std::unique_ptr<Public_Key>
load_public_key(const AlgorithmIdentifier& alg_id,
const std::vector<uint8_t>& key_bits)
{
const std::vector<std::string> alg_info = split_on(OIDS::lookup(alg_id.get_oid()), '/');
if(alg_info.empty())
throw Decoding_Error("Unknown algorithm OID: " + alg_id.get_oid().as_string());
const std::string alg_name = alg_info[0];
#if defined(BOTAN_HAS_RSA)
if(alg_name == "RSA")
return std::unique_ptr<Public_Key>(new RSA_PublicKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_CURVE_25519)
if(alg_name == "Curve25519")
return std::unique_ptr<Public_Key>(new Curve25519_PublicKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_MCELIECE)
if(alg_name == "McEliece")
return std::unique_ptr<Public_Key>(new McEliece_PublicKey(key_bits));
#endif
#if defined(BOTAN_HAS_ECDSA)
if(alg_name == "ECDSA")
return std::unique_ptr<Public_Key>(new ECDSA_PublicKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_ECDH)
if(alg_name == "ECDH")
return std::unique_ptr<Public_Key>(new ECDH_PublicKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_DIFFIE_HELLMAN)
if(alg_name == "DH")
return std::unique_ptr<Public_Key>(new DH_PublicKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_DSA)
if(alg_name == "DSA")
return std::unique_ptr<Public_Key>(new DSA_PublicKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_ELGAMAL)
if(alg_name == "ElGamal")
return std::unique_ptr<Public_Key>(new ElGamal_PublicKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_ECGDSA)
if(alg_name == "ECGDSA")
return std::unique_ptr<Public_Key>(new ECGDSA_PublicKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_ECKCDSA)
if(alg_name == "ECKCDSA")
return std::unique_ptr<Public_Key>(new ECKCDSA_PublicKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_ED25519)
if(alg_name == "Ed25519")
return std::unique_ptr<Public_Key>(new Ed25519_PublicKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_GOST_34_10_2001)
if(alg_name == "GOST-34.10")
return std::unique_ptr<Public_Key>(new GOST_3410_PublicKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_SM2)
if(alg_name == "SM2_Sig")
return std::unique_ptr<Public_Key>(new SM2_Signature_PublicKey(alg_id, key_bits));
if(alg_name == "SM2_Enc")
return std::unique_ptr<Public_Key>(new SM2_Encryption_PublicKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_XMSS)
if(alg_name == "XMSS")
return std::unique_ptr<Public_Key>(new XMSS_PublicKey(key_bits));
#endif
throw Decoding_Error("Unhandled PK algorithm " + alg_name);
}
std::unique_ptr<Private_Key>
load_private_key(const AlgorithmIdentifier& alg_id,
const secure_vector<uint8_t>& key_bits)
{
const std::string alg_name = OIDS::lookup(alg_id.get_oid());
if(alg_name == "")
throw Decoding_Error("Unknown algorithm OID: " + alg_id.get_oid().as_string());
#if defined(BOTAN_HAS_RSA)
if(alg_name == "RSA")
return std::unique_ptr<Private_Key>(new RSA_PrivateKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_CURVE_25519)
if(alg_name == "Curve25519")
return std::unique_ptr<Private_Key>(new Curve25519_PrivateKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_ECDSA)
if(alg_name == "ECDSA")
return std::unique_ptr<Private_Key>(new ECDSA_PrivateKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_ECDH)
if(alg_name == "ECDH")
return std::unique_ptr<Private_Key>(new ECDH_PrivateKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_DIFFIE_HELLMAN)
if(alg_name == "DH")
return std::unique_ptr<Private_Key>(new DH_PrivateKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_DSA)
if(alg_name == "DSA")
return std::unique_ptr<Private_Key>(new DSA_PrivateKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_MCELIECE)
if(alg_name == "McEliece")
return std::unique_ptr<Private_Key>(new McEliece_PrivateKey(key_bits));
#endif
#if defined(BOTAN_HAS_ECGDSA)
if(alg_name == "ECGDSA")
return std::unique_ptr<Private_Key>(new ECGDSA_PrivateKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_ECKCDSA)
if(alg_name == "ECKCDSA")
return std::unique_ptr<Private_Key>(new ECKCDSA_PrivateKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_ED25519)
if(alg_name == "Ed25519")
return std::unique_ptr<Private_Key>(new Ed25519_PrivateKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_GOST_34_10_2001)
if(alg_name == "GOST-34.10")
return std::unique_ptr<Private_Key>(new GOST_3410_PrivateKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_SM2)
if(alg_name == "SM2_Sig")
return std::unique_ptr<Private_Key>(new SM2_Signature_PrivateKey(alg_id, key_bits));
if(alg_name == "SM2_Enc")
return std::unique_ptr<Private_Key>(new SM2_Encryption_PrivateKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_ELGAMAL)
if(alg_name == "ElGamal")
return std::unique_ptr<Private_Key>(new ElGamal_PrivateKey(alg_id, key_bits));
#endif
#if defined(BOTAN_HAS_XMSS)
if(alg_name == "XMSS")
return std::unique_ptr<Private_Key>(new XMSS_PrivateKey(key_bits));
#endif
throw Decoding_Error("Unhandled PK algorithm " + alg_name);
}
namespace {
std::string default_ec_group_for(const std::string& alg_name)
{
if(alg_name == "SM2_Enc" || alg_name == "SM2_Sig")
return "sm2p256v1";
if(alg_name == "GOST-34.10")
return "gost_256A";
if(alg_name == "ECGDSA")
return "brainpool256r1";
return "secp256r1";
}
}
std::unique_ptr<Private_Key>
create_private_key(const std::string& alg_name,
RandomNumberGenerator& rng,
const std::string& params,
const std::string& provider)
{
/*
* Default paramaters are chosen for work factor > 2**128 where possible
*/
#if defined(BOTAN_HAS_CURVE_25519)
if(alg_name == "Curve25519")
return std::unique_ptr<Private_Key>(new Curve25519_PrivateKey(rng));
#endif
#if defined(BOTAN_HAS_RSA)
if(alg_name == "RSA")
{
const size_t rsa_bits = (params.empty() ? 3072 : to_u32bit(params));
#if defined(BOTAN_HAS_OPENSSL)
if(provider.empty() || provider == "openssl")
{
std::unique_ptr<Botan::Private_Key> pk;
if((pk = make_openssl_rsa_private_key(rng, rsa_bits)))
return pk;
if(!provider.empty())
return nullptr;
}
#endif
return std::unique_ptr<Private_Key>(new RSA_PrivateKey(rng, rsa_bits));
}
#endif
#if defined(BOTAN_HAS_MCELIECE)
if(alg_name == "McEliece")
{
std::vector<std::string> mce_param =
Botan::split_on(params.empty() ? "2960,57" : params, ',');
if(mce_param.size() != 2)
throw Invalid_Argument("create_private_key bad McEliece parameters " + params);
size_t mce_n = Botan::to_u32bit(mce_param[0]);
size_t mce_t = Botan::to_u32bit(mce_param[1]);
return std::unique_ptr<Botan::Private_Key>(new Botan::McEliece_PrivateKey(rng, mce_n, mce_t));
}
#endif
#if defined(BOTAN_HAS_XMSS)
if(alg_name == "XMSS")
{
return std::unique_ptr<Private_Key>(
new XMSS_PrivateKey(XMSS_Parameters(params.empty() ? "XMSS_SHA2-512_W16_H10" : params).oid(), rng));
}
#endif
#if defined(BOTAN_HAS_ED25519)
if(alg_name == "Ed25519")
{
return std::unique_ptr<Private_Key>(new Ed25519_PrivateKey(rng));
}
#endif
// ECC crypto
#if defined(BOTAN_HAS_ECC_PUBLIC_KEY_CRYPTO)
if(alg_name == "ECDSA" ||
alg_name == "ECDH" ||
alg_name == "ECKCDSA" ||
alg_name == "ECGDSA" ||
alg_name == "SM2_Sig" ||
alg_name == "SM2_Enc" ||
alg_name == "GOST-34.10")
{
const EC_Group ec_group(params.empty() ? default_ec_group_for(alg_name) : params);
#if defined(BOTAN_HAS_ECDSA)
if(alg_name == "ECDSA")
return std::unique_ptr<Private_Key>(new ECDSA_PrivateKey(rng, ec_group));
#endif
#if defined(BOTAN_HAS_ECDH)
if(alg_name == "ECDH")
return std::unique_ptr<Private_Key>(new ECDH_PrivateKey(rng, ec_group));
#endif
#if defined(BOTAN_HAS_ECKCDSA)
if(alg_name == "ECKCDSA")
return std::unique_ptr<Private_Key>(new ECKCDSA_PrivateKey(rng, ec_group));
#endif
#if defined(BOTAN_HAS_GOST_34_10_2001)
if(alg_name == "GOST-34.10")
return std::unique_ptr<Private_Key>(new GOST_3410_PrivateKey(rng, ec_group));
#endif
#if defined(BOTAN_HAS_SM2)
if(alg_name == "SM2_Sig")
return std::unique_ptr<Private_Key>(new SM2_Signature_PrivateKey(rng, ec_group));
if(alg_name == "SM2_Enc")
return std::unique_ptr<Private_Key>(new SM2_Encryption_PrivateKey(rng, ec_group));
#endif
#if defined(BOTAN_HAS_ECGDSA)
if(alg_name == "ECGDSA")
return std::unique_ptr<Private_Key>(new ECGDSA_PrivateKey(rng, ec_group));
#endif
}
#endif
// DL crypto
#if defined(BOTAN_HAS_DL_GROUP)
if(alg_name == "DH" || alg_name == "DSA" || alg_name == "ElGamal")
{
std::string default_group = (alg_name == "DSA") ? "dsa/botan/2048" : "modp/ietf/2048";
DL_Group modp_group(params.empty() ? default_group : params);
#if defined(BOTAN_HAS_DIFFIE_HELLMAN)
if(alg_name == "DH")
return std::unique_ptr<Private_Key>(new DH_PrivateKey(rng, modp_group));
#endif
#if defined(BOTAN_HAS_DSA)
if(alg_name == "DSA")
return std::unique_ptr<Private_Key>(new DSA_PrivateKey(rng, modp_group));
#endif
#if defined(BOTAN_HAS_ELGAMAL)
if(alg_name == "ElGamal")
return std::unique_ptr<Private_Key>(new ElGamal_PrivateKey(rng, modp_group));
#endif
}
#endif
BOTAN_UNUSED(alg_name, rng, provider);
return std::unique_ptr<Private_Key>();
}
std::vector<std::string>
probe_provider_private_key(const std::string& alg_name,
const std::vector<std::string> possible)
{
std::vector<std::string> providers;
for(auto&& prov : possible)
{
if(prov == "base" ||
#if defined(BOTAN_HAS_OPENSSL)
(prov == "openssl" && alg_name == "RSA") ||
#endif
0)
{
providers.push_back(prov); // available
}
}
BOTAN_UNUSED(alg_name);
return providers;
}
}
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