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/*
* (C) 2014,2015 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include "tests.h"
#include "test_rng.h"
#if defined(BOTAN_HAS_RSA)
#include <botan/rsa.h>
#include "test_pubkey.h"
#endif
namespace Botan_Tests {
namespace {
#if defined(BOTAN_HAS_RSA)
class RSA_ES_KAT_Tests : public PK_Encryption_Decryption_Test
{
public:
RSA_ES_KAT_Tests()
: PK_Encryption_Decryption_Test(
"RSA",
"pubkey/rsaes.vec",
"E,P,Q,Msg,Ciphertext",
"Padding,Nonce") {}
std::unique_ptr<Botan::Private_Key> load_private_key(const VarMap& vars) override
{
const BigInt p = get_req_bn(vars, "P");
const BigInt q = get_req_bn(vars, "Q");
const BigInt e = get_req_bn(vars, "E");
std::unique_ptr<Botan::Private_Key> key(new Botan::RSA_PrivateKey(p, q, e));
return key;
}
};
class RSA_KEM_Tests : public PK_KEM_Test
{
public:
RSA_KEM_Tests()
: PK_KEM_Test(
"RSA",
"pubkey/rsa_kem.vec",
"E,P,Q,R,C0,KDF,OutLen,K") {}
std::unique_ptr<Botan::Private_Key> load_private_key(const VarMap& vars) override
{
const BigInt p = get_req_bn(vars, "P");
const BigInt q = get_req_bn(vars, "Q");
const BigInt e = get_req_bn(vars, "E");
std::unique_ptr<Botan::Private_Key> key(new Botan::RSA_PrivateKey(p, q, e));
return key;
}
};
class RSA_Signature_KAT_Tests : public PK_Signature_Generation_Test
{
public:
RSA_Signature_KAT_Tests()
: PK_Signature_Generation_Test(
"RSA",
"pubkey/rsa_sig.vec",
"E,P,Q,Msg,Signature",
"Padding,Nonce") {}
std::string default_padding(const VarMap&) const override
{
return "Raw";
}
std::unique_ptr<Botan::Private_Key> load_private_key(const VarMap& vars) override
{
const BigInt p = get_req_bn(vars, "P");
const BigInt q = get_req_bn(vars, "Q");
const BigInt e = get_req_bn(vars, "E");
std::unique_ptr<Botan::Private_Key> key(new Botan::RSA_PrivateKey(p, q, e));
return key;
}
};
class RSA_Signature_Verify_Tests : public PK_Signature_Verification_Test
{
public:
RSA_Signature_Verify_Tests()
: PK_Signature_Verification_Test(
"RSA",
"pubkey/rsa_verify.vec",
"E,N,Msg,Signature",
"Padding") {}
std::string default_padding(const VarMap&) const override
{
return "Raw";
}
std::unique_ptr<Botan::Public_Key> load_public_key(const VarMap& vars) override
{
const BigInt n = get_req_bn(vars, "N");
const BigInt e = get_req_bn(vars, "E");
std::unique_ptr<Botan::Public_Key> key(new Botan::RSA_PublicKey(n, e));
return key;
}
};
class RSA_Signature_Verify_Invalid_Tests : public PK_Signature_NonVerification_Test
{
public:
RSA_Signature_Verify_Invalid_Tests()
: PK_Signature_NonVerification_Test(
"RSA",
"pubkey/rsa_invalid.vec",
"Padding,E,N,Msg,InvalidSignature") {}
std::string default_padding(const VarMap&) const override
{
return "Raw";
}
std::unique_ptr<Botan::Public_Key> load_public_key(const VarMap& vars) override
{
const BigInt n = get_req_bn(vars, "N");
const BigInt e = get_req_bn(vars, "E");
std::unique_ptr<Botan::Public_Key> key(new Botan::RSA_PublicKey(n, e));
return key;
}
};
class RSA_Keygen_Tests : public PK_Key_Generation_Test
{
public:
std::vector<std::string> keygen_params() const override
{
return { "1024", "1280" };
}
std::string algo_name() const override
{
return "RSA";
}
};
class RSA_Blinding_Tests : public Test
{
public:
std::vector<Test::Result> run() override
{
Test::Result result("RSA blinding");
#if defined(BOTAN_HAS_EMSA_RAW) || defined(BOTAN_HAS_EME_RAW)
Botan::RSA_PrivateKey rsa(Test::rng(), 1024);
Botan::Null_RNG null_rng;
#endif
#if defined(BOTAN_HAS_EMSA_RAW)
/*
* The blinder chooses a new starting point BOTAN_BLINDING_REINIT_INTERVAL
* so sign several times that with a single key.
*
* Very small values (padding/hashing disabled, only low byte set on input)
* are used as an additional test on the blinders.
*/
Botan::PK_Signer signer(rsa, Test::rng(), "Raw", Botan::IEEE_1363, "base"); // don't try this at home
Botan::PK_Verifier verifier(rsa, "Raw");
for(size_t i = 1; i <= BOTAN_BLINDING_REINIT_INTERVAL * 6; ++i)
{
std::vector<uint8_t> input(16);
input[input.size() - 1] = static_cast<uint8_t>(i);
signer.update(input);
// assert RNG is not called in this situation
std::vector<uint8_t> signature = signer.signature(null_rng);
result.test_eq("Signature verifies",
verifier.verify_message(input, signature), true);
}
#endif
#if defined(BOTAN_HAS_EME_RAW)
/*
* The blinder chooses a new starting point BOTAN_BLINDING_REINIT_INTERVAL
* so decrypt several times that with a single key.
*
* Very small values (padding/hashing disabled, only low byte set on input)
* are used as an additional test on the blinders.
*/
Botan::PK_Encryptor_EME encryptor(rsa, Test::rng(), "Raw"); // don't try this at home
// test blinding reinit interval
// Seed Fixed_Output_RNG only with enough bytes for the initial blinder initialization
Botan_Tests::Fixed_Output_RNG fixed_rng(Botan::unlock(Test::rng().random_vec(rsa.get_n().bytes())));
Botan::PK_Decryptor_EME decryptor(rsa, fixed_rng, "Raw", "base");
for(size_t i = 1; i <= BOTAN_BLINDING_REINIT_INTERVAL ; ++i)
{
std::vector<uint8_t> input(16);
input[ input.size() - 1 ] = static_cast<uint8_t>(i);
std::vector<uint8_t> ciphertext = encryptor.encrypt(input, null_rng);
std::vector<uint8_t> plaintext = Botan::unlock(decryptor.decrypt(ciphertext));
plaintext.insert(plaintext.begin(), input.size() - 1, 0);
result.test_eq("Successful decryption", plaintext, input);
}
result.test_eq("RNG is no longer seeded", fixed_rng.is_seeded(), false);
// one more decryption should trigger a blinder reinitialization
result.test_throws("RSA blinding reinit",
"Test error Fixed output RNG ran out of bytes, test bug?",
[&decryptor, &encryptor, &null_rng]()
{
std::vector<uint8_t> ciphertext = encryptor.encrypt(std::vector<uint8_t>(16, 5), null_rng);
decryptor.decrypt(ciphertext);
});
#endif
return std::vector<Test::Result> {result};
}
};
BOTAN_REGISTER_TEST("rsa_encrypt", RSA_ES_KAT_Tests);
BOTAN_REGISTER_TEST("rsa_sign", RSA_Signature_KAT_Tests);
BOTAN_REGISTER_TEST("rsa_verify", RSA_Signature_Verify_Tests);
BOTAN_REGISTER_TEST("rsa_verify_invalid", RSA_Signature_Verify_Invalid_Tests);
BOTAN_REGISTER_TEST("rsa_kem", RSA_KEM_Tests);
BOTAN_REGISTER_TEST("rsa_keygen", RSA_Keygen_Tests);
BOTAN_REGISTER_TEST("rsa_blinding", RSA_Blinding_Tests);
#endif
}
}
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