From 9bcfe627321ddc81691b835dffaa6324ac4684a4 Mon Sep 17 00:00:00 2001 From: lloyd Date: Sun, 28 Sep 2008 19:29:24 +0000 Subject: Move all modules into src/ directory --- src/engine/gnump/eng_gmp.cpp | 377 ++++++++++++++++++++++++++++++++++++++++++ src/engine/gnump/eng_gmp.h | 43 +++++ src/engine/gnump/gmp_mem.cpp | 60 +++++++ src/engine/gnump/gmp_powm.cpp | 51 ++++++ src/engine/gnump/gmp_wrap.cpp | 96 +++++++++++ src/engine/gnump/gmp_wrap.h | 36 ++++ src/engine/gnump/modinfo.txt | 18 ++ 7 files changed, 681 insertions(+) create mode 100644 src/engine/gnump/eng_gmp.cpp create mode 100644 src/engine/gnump/eng_gmp.h create mode 100644 src/engine/gnump/gmp_mem.cpp create mode 100644 src/engine/gnump/gmp_powm.cpp create mode 100644 src/engine/gnump/gmp_wrap.cpp create mode 100644 src/engine/gnump/gmp_wrap.h create mode 100644 src/engine/gnump/modinfo.txt (limited to 'src/engine/gnump') diff --git a/src/engine/gnump/eng_gmp.cpp b/src/engine/gnump/eng_gmp.cpp new file mode 100644 index 000000000..a0e18e059 --- /dev/null +++ b/src/engine/gnump/eng_gmp.cpp @@ -0,0 +1,377 @@ +/************************************************* +* GMP Engine Source File * +* (C) 1999-2007 Jack Lloyd * +*************************************************/ + +#include +#include +#include + +namespace Botan { + +namespace { + +/************************************************* +* GMP IF Operation * +*************************************************/ +class GMP_IF_Op : public IF_Operation + { + public: + BigInt public_op(const BigInt&) const; + BigInt private_op(const BigInt&) const; + + IF_Operation* clone() const { return new GMP_IF_Op(*this); } + + GMP_IF_Op(const BigInt& e_bn, const BigInt& n_bn, const BigInt&, + const BigInt& p_bn, const BigInt& q_bn, const BigInt& d1_bn, + const BigInt& d2_bn, const BigInt& c_bn) : + e(e_bn), n(n_bn), p(p_bn), q(q_bn), d1(d1_bn), d2(d2_bn), c(c_bn) {} + private: + const GMP_MPZ e, n, p, q, d1, d2, c; + }; + +/************************************************* +* GMP IF Public Operation * +*************************************************/ +BigInt GMP_IF_Op::public_op(const BigInt& i_bn) const + { + GMP_MPZ i(i_bn); + mpz_powm(i.value, i.value, e.value, n.value); + return i.to_bigint(); + } + +/************************************************* +* GMP IF Private Operation * +*************************************************/ +BigInt GMP_IF_Op::private_op(const BigInt& i_bn) const + { + if(mpz_cmp_ui(p.value, 0) == 0) + throw Internal_Error("GMP_IF_Op::private_op: No private key"); + + GMP_MPZ j1, j2, h(i_bn); + + mpz_powm(j1.value, h.value, d1.value, p.value); + mpz_powm(j2.value, h.value, d2.value, q.value); + mpz_sub(h.value, j1.value, j2.value); + mpz_mul(h.value, h.value, c.value); + mpz_mod(h.value, h.value, p.value); + mpz_mul(h.value, h.value, q.value); + mpz_add(h.value, h.value, j2.value); + return h.to_bigint(); + } + +/************************************************* +* GMP DSA Operation * +*************************************************/ +class GMP_DSA_Op : public DSA_Operation + { + public: + bool verify(const byte[], u32bit, const byte[], u32bit) const; + SecureVector sign(const byte[], u32bit, const BigInt&) const; + + DSA_Operation* clone() const { return new GMP_DSA_Op(*this); } + + GMP_DSA_Op(const DL_Group& group, const BigInt& y1, const BigInt& x1) : + x(x1), y(y1), p(group.get_p()), q(group.get_q()), g(group.get_g()) {} + private: + const GMP_MPZ x, y, p, q, g; + }; + +/************************************************* +* GMP DSA Verify Operation * +*************************************************/ +bool GMP_DSA_Op::verify(const byte msg[], u32bit msg_len, + const byte sig[], u32bit sig_len) const + { + const u32bit q_bytes = q.bytes(); + + if(sig_len != 2*q_bytes || msg_len > q_bytes) + return false; + + GMP_MPZ r(sig, q_bytes); + GMP_MPZ s(sig + q_bytes, q_bytes); + GMP_MPZ i(msg, msg_len); + + if(mpz_cmp_ui(r.value, 0) <= 0 || mpz_cmp(r.value, q.value) >= 0) + return false; + if(mpz_cmp_ui(s.value, 0) <= 0 || mpz_cmp(s.value, q.value) >= 0) + return false; + + if(mpz_invert(s.value, s.value, q.value) == 0) + return false; + + GMP_MPZ si; + mpz_mul(si.value, s.value, i.value); + mpz_mod(si.value, si.value, q.value); + mpz_powm(si.value, g.value, si.value, p.value); + + GMP_MPZ sr; + mpz_mul(sr.value, s.value, r.value); + mpz_mod(sr.value, sr.value, q.value); + mpz_powm(sr.value, y.value, sr.value, p.value); + + mpz_mul(si.value, si.value, sr.value); + mpz_mod(si.value, si.value, p.value); + mpz_mod(si.value, si.value, q.value); + + if(mpz_cmp(si.value, r.value) == 0) + return true; + return false; + } + +/************************************************* +* GMP DSA Sign Operation * +*************************************************/ +SecureVector GMP_DSA_Op::sign(const byte in[], u32bit length, + const BigInt& k_bn) const + { + if(mpz_cmp_ui(x.value, 0) == 0) + throw Internal_Error("GMP_DSA_Op::sign: No private key"); + + GMP_MPZ i(in, length); + GMP_MPZ k(k_bn); + + GMP_MPZ r; + mpz_powm(r.value, g.value, k.value, p.value); + mpz_mod(r.value, r.value, q.value); + + mpz_invert(k.value, k.value, q.value); + + GMP_MPZ s; + mpz_mul(s.value, x.value, r.value); + mpz_add(s.value, s.value, i.value); + mpz_mul(s.value, s.value, k.value); + mpz_mod(s.value, s.value, q.value); + + if(mpz_cmp_ui(r.value, 0) == 0 || mpz_cmp_ui(s.value, 0) == 0) + throw Internal_Error("GMP_DSA_Op::sign: r or s was zero"); + + const u32bit q_bytes = q.bytes(); + + SecureVector output(2*q_bytes); + r.encode(output, q_bytes); + s.encode(output + q_bytes, q_bytes); + return output; + } + +/************************************************* +* GMP NR Operation * +*************************************************/ +class GMP_NR_Op : public NR_Operation + { + public: + SecureVector verify(const byte[], u32bit) const; + SecureVector sign(const byte[], u32bit, const BigInt&) const; + + NR_Operation* clone() const { return new GMP_NR_Op(*this); } + + GMP_NR_Op(const DL_Group& group, const BigInt& y1, const BigInt& x1) : + x(x1), y(y1), p(group.get_p()), q(group.get_q()), g(group.get_g()) {} + private: + const GMP_MPZ x, y, p, q, g; + }; + +/************************************************* +* GMP NR Verify Operation * +*************************************************/ +SecureVector GMP_NR_Op::verify(const byte sig[], u32bit sig_len) const + { + const u32bit q_bytes = q.bytes(); + + if(sig_len != 2*q_bytes) + return false; + + GMP_MPZ c(sig, q_bytes); + GMP_MPZ d(sig + q_bytes, q_bytes); + + if(mpz_cmp_ui(c.value, 0) <= 0 || mpz_cmp(c.value, q.value) >= 0 || + mpz_cmp(d.value, q.value) >= 0) + throw Invalid_Argument("GMP_NR_Op::verify: Invalid signature"); + + GMP_MPZ i1, i2; + mpz_powm(i1.value, g.value, d.value, p.value); + mpz_powm(i2.value, y.value, c.value, p.value); + mpz_mul(i1.value, i1.value, i2.value); + mpz_mod(i1.value, i1.value, p.value); + mpz_sub(i1.value, c.value, i1.value); + mpz_mod(i1.value, i1.value, q.value); + return BigInt::encode(i1.to_bigint()); + } + +/************************************************* +* GMP NR Sign Operation * +*************************************************/ +SecureVector GMP_NR_Op::sign(const byte in[], u32bit length, + const BigInt& k_bn) const + { + if(mpz_cmp_ui(x.value, 0) == 0) + throw Internal_Error("GMP_NR_Op::sign: No private key"); + + GMP_MPZ f(in, length); + GMP_MPZ k(k_bn); + + if(mpz_cmp(f.value, q.value) >= 0) + throw Invalid_Argument("GMP_NR_Op::sign: Input is out of range"); + + GMP_MPZ c, d; + mpz_powm(c.value, g.value, k.value, p.value); + mpz_add(c.value, c.value, f.value); + mpz_mod(c.value, c.value, q.value); + mpz_mul(d.value, x.value, c.value); + mpz_sub(d.value, k.value, d.value); + mpz_mod(d.value, d.value, q.value); + + if(mpz_cmp_ui(c.value, 0) == 0) + throw Internal_Error("Default_NR_Op::sign: c was zero"); + + const u32bit q_bytes = q.bytes(); + SecureVector output(2*q_bytes); + c.encode(output, q_bytes); + d.encode(output + q_bytes, q_bytes); + return output; + } + +/************************************************* +* GMP ElGamal Operation * +*************************************************/ +class GMP_ELG_Op : public ELG_Operation + { + public: + SecureVector encrypt(const byte[], u32bit, const BigInt&) const; + BigInt decrypt(const BigInt&, const BigInt&) const; + + ELG_Operation* clone() const { return new GMP_ELG_Op(*this); } + + GMP_ELG_Op(const DL_Group& group, const BigInt& y1, const BigInt& x1) : + x(x1), y(y1), g(group.get_g()), p(group.get_p()) {} + private: + GMP_MPZ x, y, g, p; + }; + +/************************************************* +* GMP ElGamal Encrypt Operation * +*************************************************/ +SecureVector GMP_ELG_Op::encrypt(const byte in[], u32bit length, + const BigInt& k_bn) const + { + GMP_MPZ i(in, length); + + if(mpz_cmp(i.value, p.value) >= 0) + throw Invalid_Argument("GMP_ELG_Op: Input is too large"); + + GMP_MPZ a, b, k(k_bn); + + mpz_powm(a.value, g.value, k.value, p.value); + mpz_powm(b.value, y.value, k.value, p.value); + mpz_mul(b.value, b.value, i.value); + mpz_mod(b.value, b.value, p.value); + + const u32bit p_bytes = p.bytes(); + SecureVector output(2*p_bytes); + a.encode(output, p_bytes); + b.encode(output + p_bytes, p_bytes); + return output; + } + +/************************************************* +* GMP ElGamal Decrypt Operation * +*************************************************/ +BigInt GMP_ELG_Op::decrypt(const BigInt& a_bn, const BigInt& b_bn) const + { + if(mpz_cmp_ui(x.value, 0) == 0) + throw Internal_Error("GMP_ELG_Op::decrypt: No private key"); + + GMP_MPZ a(a_bn), b(b_bn); + + if(mpz_cmp(a.value, p.value) >= 0 || mpz_cmp(b.value, p.value) >= 0) + throw Invalid_Argument("GMP_ELG_Op: Invalid message"); + + mpz_powm(a.value, a.value, x.value, p.value); + mpz_invert(a.value, a.value, p.value); + mpz_mul(a.value, a.value, b.value); + mpz_mod(a.value, a.value, p.value); + return a.to_bigint(); + } + +/************************************************* +* GMP DH Operation * +*************************************************/ +class GMP_DH_Op : public DH_Operation + { + public: + BigInt agree(const BigInt& i) const; + DH_Operation* clone() const { return new GMP_DH_Op(*this); } + + GMP_DH_Op(const DL_Group& group, const BigInt& x_bn) : + x(x_bn), p(group.get_p()) {} + private: + GMP_MPZ x, p; + }; + +/************************************************* +* GMP DH Key Agreement Operation * +*************************************************/ +BigInt GMP_DH_Op::agree(const BigInt& i_bn) const + { + GMP_MPZ i(i_bn); + mpz_powm(i.value, i.value, x.value, p.value); + return i.to_bigint(); + } + +} + +/************************************************* +* GMP_Engine Constructor * +*************************************************/ +GMP_Engine::GMP_Engine() + { + set_memory_hooks(); + } + +/************************************************* +* Acquire an IF op * +*************************************************/ +IF_Operation* GMP_Engine::if_op(const BigInt& e, const BigInt& n, + const BigInt& d, const BigInt& p, + const BigInt& q, const BigInt& d1, + const BigInt& d2, const BigInt& c) const + { + return new GMP_IF_Op(e, n, d, p, q, d1, d2, c); + } + +/************************************************* +* Acquire a DSA op * +*************************************************/ +DSA_Operation* GMP_Engine::dsa_op(const DL_Group& group, const BigInt& y, + const BigInt& x) const + { + return new GMP_DSA_Op(group, y, x); + } + +/************************************************* +* Acquire a NR op * +*************************************************/ +NR_Operation* GMP_Engine::nr_op(const DL_Group& group, const BigInt& y, + const BigInt& x) const + { + return new GMP_NR_Op(group, y, x); + } + +/************************************************* +* Acquire an ElGamal op * +*************************************************/ +ELG_Operation* GMP_Engine::elg_op(const DL_Group& group, const BigInt& y, + const BigInt& x) const + { + return new GMP_ELG_Op(group, y, x); + } + +/************************************************* +* Acquire a DH op * +*************************************************/ +DH_Operation* GMP_Engine::dh_op(const DL_Group& group, const BigInt& x) const + { + return new GMP_DH_Op(group, x); + } + +} diff --git a/src/engine/gnump/eng_gmp.h b/src/engine/gnump/eng_gmp.h new file mode 100644 index 000000000..b8b2081fa --- /dev/null +++ b/src/engine/gnump/eng_gmp.h @@ -0,0 +1,43 @@ +/************************************************* +* GMP Engine Header File * +* (C) 1999-2007 Jack Lloyd * +*************************************************/ + +#ifndef BOTAN_ENGINE_GMP_H__ +#define BOTAN_ENGINE_GMP_H__ + +#include + +namespace Botan { + +/************************************************* +* GMP Engine * +*************************************************/ +class GMP_Engine : public Engine + { + public: + IF_Operation* if_op(const BigInt&, const BigInt&, const BigInt&, + const BigInt&, const BigInt&, const BigInt&, + const BigInt&, const BigInt&) const; + + DSA_Operation* dsa_op(const DL_Group&, const BigInt&, + const BigInt&) const; + + NR_Operation* nr_op(const DL_Group&, const BigInt&, const BigInt&) const; + + ELG_Operation* elg_op(const DL_Group&, const BigInt&, + const BigInt&) const; + + DH_Operation* dh_op(const DL_Group&, const BigInt&) const; + + Modular_Exponentiator* mod_exp(const BigInt&, + Power_Mod::Usage_Hints) const; + + GMP_Engine(); + private: + static void set_memory_hooks(); + }; + +} + +#endif diff --git a/src/engine/gnump/gmp_mem.cpp b/src/engine/gnump/gmp_mem.cpp new file mode 100644 index 000000000..ea8ef4d3b --- /dev/null +++ b/src/engine/gnump/gmp_mem.cpp @@ -0,0 +1,60 @@ +/************************************************* +* GNU MP Memory Handlers Source File * +* (C) 1999-2007 Jack Lloyd * +*************************************************/ + +#include +#include +#include + +namespace Botan { + +namespace { + +/************************************************* +* Allocator used by GNU MP * +*************************************************/ +Allocator* gmp_alloc = 0; + +/************************************************* +* Allocation Function for GNU MP * +*************************************************/ +void* gmp_malloc(size_t n) + { + return gmp_alloc->allocate(n); + } + +/************************************************* +* Reallocation Function for GNU MP * +*************************************************/ +void* gmp_realloc(void* ptr, size_t old_n, size_t new_n) + { + void* new_buf = gmp_alloc->allocate(new_n); + std::memcpy(new_buf, ptr, std::min(old_n, new_n)); + gmp_alloc->deallocate(ptr, old_n); + return new_buf; + } + +/************************************************* +* Deallocation Function for GNU MP * +*************************************************/ +void gmp_free(void* ptr, size_t n) + { + gmp_alloc->deallocate(ptr, n); + } + +} + +/************************************************* +* Set the GNU MP memory functions * +*************************************************/ +void GMP_Engine::set_memory_hooks() + { + if(gmp_alloc == 0) + { + gmp_alloc = Allocator::get(true); + mp_set_memory_functions(gmp_malloc, gmp_realloc, gmp_free); + } + } + +} diff --git a/src/engine/gnump/gmp_powm.cpp b/src/engine/gnump/gmp_powm.cpp new file mode 100644 index 000000000..a5e3d1c0d --- /dev/null +++ b/src/engine/gnump/gmp_powm.cpp @@ -0,0 +1,51 @@ +/************************************************* +* GMP Modular Exponentiation Source File * +* (C) 1999-2007 Jack Lloyd * +*************************************************/ + +#include +#include + +namespace Botan { + +namespace { + +/************************************************* +* GMP Modular Exponentiator * +*************************************************/ +class GMP_Modular_Exponentiator : public Modular_Exponentiator + { + public: + void set_base(const BigInt& b) { base = b; } + void set_exponent(const BigInt& e) { exp = e; } + BigInt execute() const; + Modular_Exponentiator* copy() const + { return new GMP_Modular_Exponentiator(*this); } + + GMP_Modular_Exponentiator(const BigInt& n) : mod(n) {} + private: + GMP_MPZ base, exp, mod; + }; + +/************************************************* +* Compute the result * +*************************************************/ +BigInt GMP_Modular_Exponentiator::execute() const + { + GMP_MPZ r; + mpz_powm(r.value, base.value, exp.value, mod.value); + return r.to_bigint(); + } + +} + +/************************************************* +* Return the GMP-based modular exponentiator * +*************************************************/ +Modular_Exponentiator* GMP_Engine::mod_exp(const BigInt& n, + Power_Mod::Usage_Hints) const + { + return new GMP_Modular_Exponentiator(n); + } + +} diff --git a/src/engine/gnump/gmp_wrap.cpp b/src/engine/gnump/gmp_wrap.cpp new file mode 100644 index 000000000..4c73c2562 --- /dev/null +++ b/src/engine/gnump/gmp_wrap.cpp @@ -0,0 +1,96 @@ +/************************************************* +* GMP Wrapper Source File * +* (C) 1999-2007 Jack Lloyd * +*************************************************/ + +#include + +#define GNU_MP_VERSION_CODE_FOR(a,b,c) ((a << 16) | (b << 8) | (c)) + +#define GNU_MP_VERSION_CODE \ + GNU_MP_VERSION_CODE_FOR(__GNU_MP_VERSION, __GNU_MP_VERSION_MINOR, \ + __GNU_MP_VERSION_PATCHLEVEL) + +#if GNU_MP_VERSION_CODE < GNU_MP_VERSION_CODE_FOR(4,1,0) + #error Your GNU MP install is too old, upgrade to 4.1 or later +#endif + +namespace Botan { + +/************************************************* +* GMP_MPZ Constructor * +*************************************************/ +GMP_MPZ::GMP_MPZ(const BigInt& in) + { + mpz_init(value); + if(in != 0) + mpz_import(value, in.sig_words(), -1, sizeof(word), 0, 0, in.data()); + } + +/************************************************* +* GMP_MPZ Constructor * +*************************************************/ +GMP_MPZ::GMP_MPZ(const byte in[], u32bit length) + { + mpz_init(value); + mpz_import(value, length, 1, 1, 0, 0, in); + } + +/************************************************* +* GMP_MPZ Copy Constructor * +*************************************************/ +GMP_MPZ::GMP_MPZ(const GMP_MPZ& other) + { + mpz_init_set(value, other.value); + } + +/************************************************* +* GMP_MPZ Destructor * +*************************************************/ +GMP_MPZ::~GMP_MPZ() + { + mpz_clear(value); + } + +/************************************************* +* GMP_MPZ Assignment Operator * +*************************************************/ +GMP_MPZ& GMP_MPZ::operator=(const GMP_MPZ& other) + { + mpz_set(value, other.value); + return (*this); + } + +/************************************************* +* Export the mpz_t as a bytestring * +*************************************************/ +void GMP_MPZ::encode(byte out[], u32bit length) const + { + size_t dummy = 0; + mpz_export(out + (length - bytes()), &dummy, 1, 1, 0, 0, value); + } + +/************************************************* +* Return the number of significant bytes * +*************************************************/ +u32bit GMP_MPZ::bytes() const + { + return ((mpz_sizeinbase(value, 2) + 7) / 8); + } + +/************************************************* +* GMP to BigInt Conversions * +*************************************************/ +BigInt GMP_MPZ::to_bigint() const + { + BigInt out(BigInt::Positive, (bytes() + sizeof(word) - 1) / sizeof(word)); + size_t dummy = 0; + mpz_export(out.get_reg(), &dummy, -1, sizeof(word), 0, 0, value); + + if(mpz_sgn(value) < 0) + out.flip_sign(); + + return out; + } + +} diff --git a/src/engine/gnump/gmp_wrap.h b/src/engine/gnump/gmp_wrap.h new file mode 100644 index 000000000..09a8590c4 --- /dev/null +++ b/src/engine/gnump/gmp_wrap.h @@ -0,0 +1,36 @@ +/************************************************* +* GMP MPZ Wrapper Header File * +* (C) 1999-2007 Jack Lloyd * +*************************************************/ + +#ifndef BOTAN_GMP_MPZ_WRAP_H__ +#define BOTAN_GMP_MPZ_WRAP_H__ + +#include +#include + +namespace Botan { + +/************************************************* +* Lightweight GMP mpz_t Wrapper * +*************************************************/ +class GMP_MPZ + { + public: + mpz_t value; + + BigInt to_bigint() const; + void encode(byte[], u32bit) const; + u32bit bytes() const; + + GMP_MPZ& operator=(const GMP_MPZ&); + + GMP_MPZ(const GMP_MPZ&); + GMP_MPZ(const BigInt& = 0); + GMP_MPZ(const byte[], u32bit); + ~GMP_MPZ(); + }; + +} + +#endif diff --git a/src/engine/gnump/modinfo.txt b/src/engine/gnump/modinfo.txt new file mode 100644 index 000000000..e65e411fd --- /dev/null +++ b/src/engine/gnump/modinfo.txt @@ -0,0 +1,18 @@ +realname "GMP Engine" + +define ENGINE_GNU_MP + +load_on request + + +eng_gmp.cpp +gmp_wrap.cpp +gmp_mem.cpp +gmp_powm.cpp +eng_gmp.h +gmp_wrap.h + + + +all -> gmp + -- cgit v1.2.3