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-rw-r--r--mpi.cpp54
1 files changed, 29 insertions, 25 deletions
diff --git a/mpi.cpp b/mpi.cpp
index 39e3408..18a3349 100644
--- a/mpi.cpp
+++ b/mpi.cpp
@@ -68,7 +68,7 @@ void Mpi::operator=(const Mpi &src)
val_ = gcry_mpi_copy(src.val_);
}
-void Mpi::operator=(const long unsigned int src)
+void Mpi::operator=(const u_int32_t src)
{
gcry_mpi_set_ui(val_, src);
}
@@ -80,48 +80,44 @@ Mpi Mpi::operator+(const Mpi &b) const
return res;
}
-Mpi Mpi::operator+(const long unsigned int &b) const
+Mpi Mpi::operator+(const u_int32_t &b) const
{
Mpi res;
gcry_mpi_add_ui(res.val_, val_, b);
return res;
}
-Mpi Mpi::operator*(const unsigned long int n) const
+Mpi Mpi::operator*(const u_int32_t n) const
{
Mpi res;
gcry_mpi_mul_ui(res.val_, val_, n);
return res;
}
-//TODO: this is outstandingly ugly!!!!!!!!
-Mpi Mpi::operator^(const Mpi &b) const
+Mpi Mpi::operator/(const Mpi &b) const
{
- u_int32_t a_len=0, b_len=0;
Mpi res;
+ gcry_mpi_div(res.val_, NULL, val_, b.val_, 0);
+ return res;
+}
- a_len = gcry_mpi_get_nbits(val_);
- b_len = gcry_mpi_get_nbits(b.val_);
+//TODO: this is outstandingly ugly!!!!!!!!
+Mpi Mpi::operator^(const Mpi &b) const
+{
+ u_int32_t a_len = gcry_mpi_get_nbits(val_);
+ u_int32_t b_len = gcry_mpi_get_nbits(b.val_);
- if(a_len>=b_len)
- res = Mpi(*this);
- else
- res = Mpi(b);
+ Mpi res = (a_len >= b_len) ? Mpi(*this) : Mpi(b);
for(u_int32_t i=0; i<a_len && i<b_len; i++) {
if(gcry_mpi_test_bit(val_, i) ^ gcry_mpi_test_bit(b.val_, i))
gcry_mpi_set_bit(res.val_, i);
+ else
+ gcry_mpi_clear_bit(res.val_, i);
}
return res;
}
-// bit manipulation
-
-void Mpi::rShift(u_int8_t n)
-{
- gcry_mpi_rshift(val_, val_, n);
-}
-
Mpi Mpi::mul2exp(u_int32_t e) const
{
Mpi res;
@@ -129,11 +125,6 @@ Mpi Mpi::mul2exp(u_int32_t e) const
return res;
}
-void Mpi::clearHighBit(u_int32_t n)
-{
- gcry_mpi_clear_highbit( val_, n );
-}
-
u_int8_t* Mpi::getNewBuf(u_int32_t buf_len) const
{
// u_int32_t len = 0;
@@ -153,7 +144,20 @@ u_int8_t* Mpi::getNewBuf(u_int32_t buf_len) const
return res;
}
-u_int32_t Mpi::getLen() const
+//TODO: why does this not work ?????
+std::string Mpi::getHexDump() const
+{
+// u_int8_t *buf;
+// u_int32_t len;
+// gcry_mpi_aprint( GCRYMPI_FMT_HEX, &buf, &len, val_ );
+// std::string res(buf, len);
+
+ gcry_mpi_dump( val_ );
+ std::string res("\n");
+ return res;
+}
+
+u_int32_t Mpi::getLength() const
{
return gcry_mpi_get_nbits( val_ );
}