diff options
author | lloyd <[email protected]> | 2008-11-09 19:49:23 +0000 |
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committer | lloyd <[email protected]> | 2008-11-09 19:49:23 +0000 |
commit | cec305c17354fca9c426d76a78f7088f60607afb (patch) | |
tree | 1bf7b53a76617339d67523d34be34f903ced28fc /src/engine/gnump/gmp_nr.cpp | |
parent | b01c1d79f02de8ca5c02f08e73cedeadc4d0753a (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.cpp | 105 |
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 - -} |