#include <stdexcept>
#include <vector>
#include <openssl/bn.h>
-
-#include "util.h" // for uint64
+#include "util.h"
/** Errors thrown by the bignum class */
class bignum_error : public std::runtime_error
BN_clear_free(this);
}
- //CBigNum(char n) is not portable. Use 'signed char' or 'unsigned char'.
- CBigNum(signed char n) { BN_init(this); if (n >= 0) setulong(n); else setint64(n); }
- CBigNum(short n) { BN_init(this); if (n >= 0) setulong(n); else setint64(n); }
- CBigNum(int n) { BN_init(this); if (n >= 0) setulong(n); else setint64(n); }
- CBigNum(long n) { BN_init(this); if (n >= 0) setulong(n); else setint64(n); }
- CBigNum(int64 n) { BN_init(this); setint64(n); }
- CBigNum(unsigned char n) { BN_init(this); setulong(n); }
- CBigNum(unsigned short n) { BN_init(this); setulong(n); }
- CBigNum(unsigned int n) { BN_init(this); setulong(n); }
- CBigNum(unsigned long n) { BN_init(this); setulong(n); }
- CBigNum(uint64 n) { BN_init(this); setuint64(n); }
- explicit CBigNum(uint256 n) { BN_init(this); setuint256(n); }
+ CBigNum(int8_t n) { BN_init(this); if (n >= 0) setuint32(n); else setint64(n); }
+ CBigNum(int16_t n) { BN_init(this); if (n >= 0) setuint32(n); else setint64(n); }
+ CBigNum(int32_t n) { BN_init(this); if (n >= 0) setuint32(n); else setint64(n); }
+ CBigNum(int64_t n) { BN_init(this); if (n >= 0) setuint64(n); else setint64(n); }
- explicit CBigNum(const std::vector<unsigned char>& vch)
+ CBigNum(uint8_t n) { BN_init(this); setuint32(n); }
+ CBigNum(uint16_t n) { BN_init(this); setuint32(n); }
+ CBigNum(uint32_t n) { BN_init(this); setuint32(n); }
+ CBigNum(uint64_t n) { BN_init(this); setuint64(n); }
+
+ explicit CBigNum(uint256 n) { BN_init(this); setuint256(n); }
+ explicit CBigNum(const std::vector<uint8_t>& vch)
{
BN_init(this);
setvch(vch);
}
- void setulong(unsigned long n)
+ void setuint32(uint32_t n)
{
if (!BN_set_word(this, n))
- throw bignum_error("CBigNum conversion from unsigned long : BN_set_word failed");
- }
-
- unsigned long getulong() const
- {
- return BN_get_word(this);
+ throw bignum_error("CBigNum conversion from uint32_t : BN_set_word failed");
}
- unsigned int getuint() const
+ uint32_t getuint32() const
{
return BN_get_word(this);
}
- int getint() const
+ int32_t getint32() const
{
- unsigned long n = BN_get_word(this);
+ uint64_t n = BN_get_word(this);
if (!BN_is_negative(this))
- return (n > (unsigned long)std::numeric_limits<int>::max() ? std::numeric_limits<int>::max() : n);
+ return (n > (uint64_t)std::numeric_limits<int32_t>::max() ? std::numeric_limits<int32_t>::max() : (int32_t)n);
else
- return (n > (unsigned long)std::numeric_limits<int>::max() ? std::numeric_limits<int>::min() : -(int)n);
+ return (n > (uint64_t)std::numeric_limits<int32_t>::max() ? std::numeric_limits<int32_t>::min() : -(int32_t)n);
}
- void setint64(int64 sn)
+ void setint64(int64_t sn)
{
- unsigned char pch[sizeof(sn) + 6];
- unsigned char* p = pch + 4;
+ uint8_t pch[sizeof(sn) + 6];
+ uint8_t* p = pch + 4;
bool fNegative;
- uint64 n;
+ uint64_t n;
- if (sn < (int64)0)
+ if (sn < (int64_t)0)
{
// Since the minimum signed integer cannot be represented as positive so long as its type is signed, and it's not well-defined what happens if you make it unsigned before negating it, we instead increment the negative integer by 1, convert it, then increment the (now positive) unsigned integer by 1 to compensate
n = -(sn + 1);
bool fLeadingZeroes = true;
for (int i = 0; i < 8; i++)
{
- unsigned char c = (n >> 56) & 0xff;
+ uint8_t c = (n >> 56) & 0xff;
n <<= 8;
if (fLeadingZeroes)
{
}
*p++ = c;
}
- unsigned int nSize = p - (pch + 4);
+ uint32_t nSize = (uint32_t) (p - (pch + 4));
pch[0] = (nSize >> 24) & 0xff;
pch[1] = (nSize >> 16) & 0xff;
pch[2] = (nSize >> 8) & 0xff;
pch[3] = (nSize) & 0xff;
- BN_mpi2bn(pch, p - pch, this);
+ BN_mpi2bn(pch, (int)(p - pch), this);
}
- uint64 getuint64()
+ uint64_t getuint64()
{
- unsigned int nSize = BN_bn2mpi(this, NULL);
+ size_t nSize = BN_bn2mpi(this, NULL);
if (nSize < 4)
return 0;
- std::vector<unsigned char> vch(nSize);
+ std::vector<uint8_t> vch(nSize);
BN_bn2mpi(this, &vch[0]);
if (vch.size() > 4)
vch[4] &= 0x7f;
- uint64 n = 0;
- for (unsigned int i = 0, j = vch.size()-1; i < sizeof(n) && j >= 4; i++, j--)
- ((unsigned char*)&n)[i] = vch[j];
+ uint64_t n = 0;
+ for (size_t i = 0, j = vch.size()-1; i < sizeof(n) && j >= 4; i++, j--)
+ ((uint8_t*)&n)[i] = vch[j];
return n;
}
- void setuint64(uint64 n)
+ //supress msvc C4127: conditional expression is constant
+ inline bool check(bool value) {return value;}
+
+ void setuint64(uint64_t n)
{
- unsigned char pch[sizeof(n) + 6];
- unsigned char* p = pch + 4;
+ // Use BN_set_word if word size is sufficient for uint64_t
+ if (check(sizeof(n) <= sizeof(BN_ULONG)))
+ {
+ if (!BN_set_word(this, (BN_ULONG)n))
+ throw bignum_error("CBigNum conversion from uint64_t : BN_set_word failed");
+ return;
+ }
+
+ uint8_t pch[sizeof(n) + 6];
+ uint8_t* p = pch + 4;
bool fLeadingZeroes = true;
for (int i = 0; i < 8; i++)
{
- unsigned char c = (n >> 56) & 0xff;
+ uint8_t c = (n >> 56) & 0xff;
n <<= 8;
if (fLeadingZeroes)
{
}
*p++ = c;
}
- unsigned int nSize = p - (pch + 4);
+ uint32_t nSize = (uint32_t) (p - (pch + 4));
pch[0] = (nSize >> 24) & 0xff;
pch[1] = (nSize >> 16) & 0xff;
pch[2] = (nSize >> 8) & 0xff;
pch[3] = (nSize) & 0xff;
- BN_mpi2bn(pch, p - pch, this);
+ BN_mpi2bn(pch, (int)(p - pch), this);
+ }
+
+ void setuint160(uint160 n)
+ {
+ uint8_t pch[sizeof(n) + 6];
+ uint8_t* p = pch + 4;
+ bool fLeadingZeroes = true;
+ uint8_t* pbegin = (uint8_t*)&n;
+ uint8_t* psrc = pbegin + sizeof(n);
+ while (psrc != pbegin)
+ {
+ uint8_t c = *(--psrc);
+ if (fLeadingZeroes)
+ {
+ if (c == 0)
+ continue;
+ if (c & 0x80)
+ *p++ = 0;
+ fLeadingZeroes = false;
+ }
+ *p++ = c;
+ }
+ uint32_t nSize = (uint32_t) (p - (pch + 4));
+ pch[0] = (nSize >> 24) & 0xff;
+ pch[1] = (nSize >> 16) & 0xff;
+ pch[2] = (nSize >> 8) & 0xff;
+ pch[3] = (nSize >> 0) & 0xff;
+ BN_mpi2bn(pch, (int) (p - pch), this);
+ }
+
+ uint160 getuint160() const
+ {
+ unsigned int nSize = BN_bn2mpi(this, NULL);
+ if (nSize < 4)
+ return 0;
+ std::vector<uint8_t> vch(nSize);
+ BN_bn2mpi(this, &vch[0]);
+ if (vch.size() > 4)
+ vch[4] &= 0x7f;
+ uint160 n = 0;
+ for (size_t i = 0, j = vch.size()-1; i < sizeof(n) && j >= 4; i++, j--)
+ ((uint8_t*)&n)[i] = vch[j];
+ return n;
}
void setuint256(uint256 n)
{
- unsigned char pch[sizeof(n) + 6];
- unsigned char* p = pch + 4;
+ uint8_t pch[sizeof(n) + 6];
+ uint8_t* p = pch + 4;
bool fLeadingZeroes = true;
- unsigned char* pbegin = (unsigned char*)&n;
- unsigned char* psrc = pbegin + sizeof(n);
+ uint8_t* pbegin = (uint8_t*)&n;
+ uint8_t* psrc = pbegin + sizeof(n);
while (psrc != pbegin)
{
- unsigned char c = *(--psrc);
+ uint8_t c = *(--psrc);
if (fLeadingZeroes)
{
if (c == 0)
}
*p++ = c;
}
- unsigned int nSize = p - (pch + 4);
+ uint32_t nSize = (uint32_t) (p - (pch + 4));
pch[0] = (nSize >> 24) & 0xff;
pch[1] = (nSize >> 16) & 0xff;
pch[2] = (nSize >> 8) & 0xff;
pch[3] = (nSize >> 0) & 0xff;
- BN_mpi2bn(pch, p - pch, this);
+ BN_mpi2bn(pch, (int) (p - pch), this);
}
uint256 getuint256() const
unsigned int nSize = BN_bn2mpi(this, NULL);
if (nSize < 4)
return 0;
- std::vector<unsigned char> vch(nSize);
+ std::vector<uint8_t> vch(nSize);
BN_bn2mpi(this, &vch[0]);
if (vch.size() > 4)
vch[4] &= 0x7f;
uint256 n = 0;
- for (unsigned int i = 0, j = vch.size()-1; i < sizeof(n) && j >= 4; i++, j--)
- ((unsigned char*)&n)[i] = vch[j];
+ for (size_t i = 0, j = vch.size()-1; i < sizeof(n) && j >= 4; i++, j--)
+ ((uint8_t*)&n)[i] = vch[j];
return n;
}
+ void setBytes(const std::vector<uint8_t>& vchBytes)
+ {
+ BN_bin2bn(&vchBytes[0], (int) vchBytes.size(), this);
+ }
- void setvch(const std::vector<unsigned char>& vch)
+ std::vector<uint8_t> getBytes() const
{
- std::vector<unsigned char> vch2(vch.size() + 4);
- unsigned int nSize = vch.size();
+ int nBytes = BN_num_bytes(this);
+
+ std::vector<uint8_t> vchBytes(nBytes);
+
+ int n = BN_bn2bin(this, &vchBytes[0]);
+ if (n != nBytes) {
+ throw bignum_error("CBigNum::getBytes : BN_bn2bin failed");
+ }
+
+ return vchBytes;
+ }
+
+ void setvch(const std::vector<uint8_t>& vch)
+ {
+ std::vector<uint8_t> vch2(vch.size() + 4);
+ uint32_t nSize = (uint32_t) vch.size();
// BIGNUM's byte stream format expects 4 bytes of
// big endian size data info at the front
vch2[0] = (nSize >> 24) & 0xff;
vch2[3] = (nSize >> 0) & 0xff;
// swap data to big endian
reverse_copy(vch.begin(), vch.end(), vch2.begin() + 4);
- BN_mpi2bn(&vch2[0], vch2.size(), this);
+ BN_mpi2bn(&vch2[0], (int) vch2.size(), this);
}
- std::vector<unsigned char> getvch() const
+ std::vector<uint8_t> getvch() const
{
unsigned int nSize = BN_bn2mpi(this, NULL);
if (nSize <= 4)
- return std::vector<unsigned char>();
- std::vector<unsigned char> vch(nSize);
+ return std::vector<uint8_t>();
+ std::vector<uint8_t> vch(nSize);
BN_bn2mpi(this, &vch[0]);
vch.erase(vch.begin(), vch.begin() + 4);
reverse(vch.begin(), vch.end());
return vch;
}
- CBigNum& SetCompact(unsigned int nCompact)
+ CBigNum& SetCompact(uint32_t nCompact)
{
- unsigned int nSize = nCompact >> 24;
- std::vector<unsigned char> vch(4 + nSize);
+ uint32_t nSize = nCompact >> 24;
+ std::vector<uint8_t> vch(4 + nSize);
vch[3] = nSize;
if (nSize >= 1) vch[4] = (nCompact >> 16) & 0xff;
if (nSize >= 2) vch[5] = (nCompact >> 8) & 0xff;
if (nSize >= 3) vch[6] = (nCompact >> 0) & 0xff;
- BN_mpi2bn(&vch[0], vch.size(), this);
+ BN_mpi2bn(&vch[0], (int) vch.size(), this);
return *this;
}
- unsigned int GetCompact() const
+ uint32_t GetCompact() const
{
- unsigned int nSize = BN_bn2mpi(this, NULL);
- std::vector<unsigned char> vch(nSize);
+ uint32_t nSize = BN_bn2mpi(this, NULL);
+ std::vector<uint8_t> vch(nSize);
nSize -= 4;
BN_bn2mpi(this, &vch[0]);
- unsigned int nCompact = nSize << 24;
+ uint32_t nCompact = nSize << 24;
if (nSize >= 1) nCompact |= (vch[4] << 16);
if (nSize >= 2) nCompact |= (vch[5] << 8);
if (nSize >= 3) nCompact |= (vch[6] << 0);
while (isxdigit(*psz))
{
*this <<= 4;
- int n = phexdigit[(unsigned char)*psz++];
+ int n = phexdigit[(uint8_t)*psz++];
*this += n;
}
if (fNegative)
if (!BN_div(&dv, &rem, &bn, &bnBase, pctx))
throw bignum_error("CBigNum::ToString() : BN_div failed");
bn = dv;
- unsigned int c = rem.getulong();
+ uint32_t c = rem.getuint32();
str += "0123456789abcdef"[c];
}
if (BN_is_negative(this))
template<typename Stream>
void Unserialize(Stream& s, int nType=0, int nVersion=PROTOCOL_VERSION)
{
- std::vector<unsigned char> vch;
+ std::vector<uint8_t> vch;
::Unserialize(s, vch, nType, nVersion);
setvch(vch);
}
CBigNum ret;
if (!BN_mod_mul(&ret, this, &b, &m, pctx))
throw bignum_error("CBigNum::mul_mod : BN_mod_mul failed");
-
+
return ret;
}
if(ret < 0){
throw bignum_error("CBigNum::isPrime :BN_is_prime");
}
- return ret;
+ return ret != 0;
}
bool isOne() const {
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