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authorlloyd <[email protected]>2008-11-09 19:49:23 +0000
committerlloyd <[email protected]>2008-11-09 19:49:23 +0000
commitcec305c17354fca9c426d76a78f7088f60607afb (patch)
tree1bf7b53a76617339d67523d34be34f903ced28fc /src/engine/gnump/gmp_nr.cpp
parentb01c1d79f02de8ca5c02f08e73cedeadc4d0753a (diff)
Move engine to libstate/ directory, since there is a mutual dependency
(messy). Remove unused libstate.h includes from a few files.
Diffstat (limited to 'src/engine/gnump/gmp_nr.cpp')
-rw-r--r--src/engine/gnump/gmp_nr.cpp105
1 files changed, 0 insertions, 105 deletions
diff --git a/src/engine/gnump/gmp_nr.cpp b/src/engine/gnump/gmp_nr.cpp
deleted file mode 100644
index 97b7e5554..000000000
--- a/src/engine/gnump/gmp_nr.cpp
+++ /dev/null
@@ -1,105 +0,0 @@
-/*************************************************
-* GMP NR Engine Source File *
-* (C) 1999-2007 Jack Lloyd *
-*************************************************/
-
-#include <botan/eng_gmp.h>
-#include <botan/gmp_wrap.h>
-#include <gmp.h>
-
-namespace Botan {
-
-#if defined(BOTAN_HAS_NYBERG_RUEPPEL)
-
-namespace {
-
-/*************************************************
-* GMP NR Operation *
-*************************************************/
-class GMP_NR_Op : public NR_Operation
- {
- public:
- SecureVector<byte> verify(const byte[], u32bit) const;
- SecureVector<byte> 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<byte> 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<byte> 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<byte> output(2*q_bytes);
- c.encode(output, q_bytes);
- d.encode(output + q_bytes, q_bytes);
- return output;
- }
-
-}
-
-/*************************************************
-* 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);
- }
-#endif
-
-}