aboutsummaryrefslogtreecommitdiffstats
path: root/src/libs/3rdparty/botan/src/lib/pubkey/ecdsa/ecdsa.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/libs/3rdparty/botan/src/lib/pubkey/ecdsa/ecdsa.cpp')
-rw-r--r--src/libs/3rdparty/botan/src/lib/pubkey/ecdsa/ecdsa.cpp258
1 files changed, 0 insertions, 258 deletions
diff --git a/src/libs/3rdparty/botan/src/lib/pubkey/ecdsa/ecdsa.cpp b/src/libs/3rdparty/botan/src/lib/pubkey/ecdsa/ecdsa.cpp
deleted file mode 100644
index cbb9eba679..0000000000
--- a/src/libs/3rdparty/botan/src/lib/pubkey/ecdsa/ecdsa.cpp
+++ /dev/null
@@ -1,258 +0,0 @@
-/*
-* ECDSA implemenation
-* (C) 2007 Manuel Hartl, FlexSecure GmbH
-* 2007 Falko Strenzke, FlexSecure GmbH
-* 2008-2010,2015,2016,2018 Jack Lloyd
-* 2016 René Korthaus
-*
-* Botan is released under the Simplified BSD License (see license.txt)
-*/
-
-#include <botan/ecdsa.h>
-#include <botan/internal/pk_ops_impl.h>
-#include <botan/internal/point_mul.h>
-#include <botan/keypair.h>
-#include <botan/reducer.h>
-#include <botan/emsa.h>
-
-#if defined(BOTAN_HAS_RFC6979_GENERATOR)
- #include <botan/rfc6979.h>
-#endif
-
-#if defined(BOTAN_HAS_BEARSSL)
- #include <botan/internal/bearssl.h>
-#endif
-
-#if defined(BOTAN_HAS_OPENSSL)
- #include <botan/internal/openssl.h>
-#endif
-
-namespace Botan {
-
-bool ECDSA_PrivateKey::check_key(RandomNumberGenerator& rng,
- bool strong) const
- {
- if(!public_point().on_the_curve())
- return false;
-
- if(!strong)
- return true;
-
- return KeyPair::signature_consistency_check(rng, *this, "EMSA1(SHA-256)");
- }
-
-namespace {
-
-/**
-* ECDSA signature operation
-*/
-class ECDSA_Signature_Operation final : public PK_Ops::Signature_with_EMSA
- {
- public:
-
- ECDSA_Signature_Operation(const ECDSA_PrivateKey& ecdsa,
- const std::string& emsa,
- RandomNumberGenerator& rng) :
- PK_Ops::Signature_with_EMSA(emsa),
- m_group(ecdsa.domain()),
- m_x(ecdsa.private_value())
- {
-#if defined(BOTAN_HAS_RFC6979_GENERATOR)
- m_rfc6979_hash = hash_for_emsa(emsa);
-#endif
-
- m_b = m_group.random_scalar(rng);
- m_b_inv = m_group.inverse_mod_order(m_b);
- }
-
- size_t signature_length() const override { return 2*m_group.get_order_bytes(); }
-
- size_t max_input_bits() const override { return m_group.get_order_bits(); }
-
- secure_vector<uint8_t> raw_sign(const uint8_t msg[], size_t msg_len,
- RandomNumberGenerator& rng) override;
-
- private:
- const EC_Group m_group;
- const BigInt& m_x;
-
-#if defined(BOTAN_HAS_RFC6979_GENERATOR)
- std::string m_rfc6979_hash;
-#endif
-
- std::vector<BigInt> m_ws;
-
- BigInt m_b, m_b_inv;
- };
-
-secure_vector<uint8_t>
-ECDSA_Signature_Operation::raw_sign(const uint8_t msg[], size_t msg_len,
- RandomNumberGenerator& rng)
- {
- BigInt m(msg, msg_len, m_group.get_order_bits());
-
-#if defined(BOTAN_HAS_RFC6979_GENERATOR)
- const BigInt k = generate_rfc6979_nonce(m_x, m_group.get_order(), m, m_rfc6979_hash);
-#else
- const BigInt k = m_group.random_scalar(rng);
-#endif
-
- const BigInt r = m_group.mod_order(
- m_group.blinded_base_point_multiply_x(k, rng, m_ws));
-
- const BigInt k_inv = m_group.inverse_mod_order(k);
-
- /*
- * Blind the input message and compute x*r+m as (x*r*b + m*b)/b
- */
- m_b = m_group.square_mod_order(m_b);
- m_b_inv = m_group.square_mod_order(m_b_inv);
-
- m = m_group.multiply_mod_order(m_b, m_group.mod_order(m));
- const BigInt xr_m = m_group.mod_order(m_group.multiply_mod_order(m_x, m_b, r) + m);
-
- const BigInt s = m_group.multiply_mod_order(k_inv, xr_m, m_b_inv);
-
- // With overwhelming probability, a bug rather than actual zero r/s
- if(r.is_zero() || s.is_zero())
- throw Internal_Error("During ECDSA signature generated zero r/s");
-
- return BigInt::encode_fixed_length_int_pair(r, s, m_group.get_order_bytes());
- }
-
-/**
-* ECDSA verification operation
-*/
-class ECDSA_Verification_Operation final : public PK_Ops::Verification_with_EMSA
- {
- public:
- ECDSA_Verification_Operation(const ECDSA_PublicKey& ecdsa,
- const std::string& emsa) :
- PK_Ops::Verification_with_EMSA(emsa),
- m_group(ecdsa.domain()),
- m_gy_mul(m_group.get_base_point(), ecdsa.public_point())
- {
- }
-
- size_t max_input_bits() const override { return m_group.get_order_bits(); }
-
- bool with_recovery() const override { return false; }
-
- bool verify(const uint8_t msg[], size_t msg_len,
- const uint8_t sig[], size_t sig_len) override;
- private:
- const EC_Group m_group;
- const PointGFp_Multi_Point_Precompute m_gy_mul;
- };
-
-bool ECDSA_Verification_Operation::verify(const uint8_t msg[], size_t msg_len,
- const uint8_t sig[], size_t sig_len)
- {
- if(sig_len != m_group.get_order_bytes() * 2)
- return false;
-
- const BigInt e(msg, msg_len, m_group.get_order_bits());
-
- const BigInt r(sig, sig_len / 2);
- const BigInt s(sig + sig_len / 2, sig_len / 2);
-
- if(r <= 0 || r >= m_group.get_order() || s <= 0 || s >= m_group.get_order())
- return false;
-
- const BigInt w = m_group.inverse_mod_order(s);
-
- const BigInt u1 = m_group.multiply_mod_order(m_group.mod_order(e), w);
- const BigInt u2 = m_group.multiply_mod_order(r, w);
- const PointGFp R = m_gy_mul.multi_exp(u1, u2);
-
- if(R.is_zero())
- return false;
-
- const BigInt v = m_group.mod_order(R.get_affine_x());
- return (v == r);
- }
-
-}
-
-std::unique_ptr<PK_Ops::Verification>
-ECDSA_PublicKey::create_verification_op(const std::string& params,
- const std::string& provider) const
- {
-#if defined(BOTAN_HAS_BEARSSL)
- if(provider == "bearssl" || provider.empty())
- {
- try
- {
- return make_bearssl_ecdsa_ver_op(*this, params);
- }
- catch(Lookup_Error& e)
- {
- if(provider == "bearssl")
- throw;
- }
- }
-#endif
-
-#if defined(BOTAN_HAS_OPENSSL)
- if(provider == "openssl" || provider.empty())
- {
- try
- {
- return make_openssl_ecdsa_ver_op(*this, params);
- }
- catch(Lookup_Error& e)
- {
- if(provider == "openssl")
- throw;
- }
- }
-#endif
-
- if(provider == "base" || provider.empty())
- return std::unique_ptr<PK_Ops::Verification>(new ECDSA_Verification_Operation(*this, params));
-
- throw Provider_Not_Found(algo_name(), provider);
- }
-
-std::unique_ptr<PK_Ops::Signature>
-ECDSA_PrivateKey::create_signature_op(RandomNumberGenerator& rng,
- const std::string& params,
- const std::string& provider) const
- {
-#if defined(BOTAN_HAS_BEARSSL)
- if(provider == "bearssl" || provider.empty())
- {
- try
- {
- return make_bearssl_ecdsa_sig_op(*this, params);
- }
- catch(Lookup_Error& e)
- {
- if(provider == "bearssl")
- throw;
- }
- }
-#endif
-
-#if defined(BOTAN_HAS_OPENSSL)
- if(provider == "openssl" || provider.empty())
- {
- try
- {
- return make_openssl_ecdsa_sig_op(*this, params);
- }
- catch(Lookup_Error& e)
- {
- if(provider == "openssl")
- throw;
- }
- }
-#endif
-
- if(provider == "base" || provider.empty())
- return std::unique_ptr<PK_Ops::Signature>(new ECDSA_Signature_Operation(*this, params, rng));
-
- throw Provider_Not_Found(algo_name(), provider);
- }
-
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-28 13:42:13 +0000