Project Description

Binary is a wonderful extremely FAST coin using the Scrypt algorithm and based originally upon Bitcoin source 0.6.3. With the takeover and revival the goals have been set to further this project towards its intended goal which is; implementation, integration, reliability, usability, safety and security. CryptoCoderz has dedicated many hours and late nights on this project for various reasons, primarily due to the nature of the algorithm. Making this coin fast, stable and secure was CryptoCoderz primary focus when adopting this project making this coin one of the greats.

Why choose Binary?

We decided to pick up binary on 9/28/2015 because we saw a good algorithm with only one node and a broken community. We say the name and wondered who would let this project die. So we did what everyone should, revived the coin and community as a whole. This Takeover went very smooth as the entire community was grateful for a second chance at light and we did our best to believe.

Future Plans?

With Binary in mind our future plans are quite simple, Provide constant updates, while paving the way for a very unique function that is still in early testing. We plan on using Binary to test our Cloud Storage concept. If all goes according to plan we will have some progress soon. However due to the amount of projects that may cause delay; we would like to assure all users that we have already began testing and will update when we make a breakthrough.

Algorithm

scrypt is a password-based key derivation function created by Colin Percival, originally for the Tarsnap online backup service. The algorithm was specifically designed to make it costly to perform large-scale custom hardware attacks by requiring large amounts of memory.

Veiw hashblock.h




static inline uint32_t be32dec(const void *pp)
{
const uint8_t *p = (uint8_t const *)pp;
return ((uint32_t)(p[3]) + ((uint32_t)(p[2]) << 8) +
((uint32_t)(p[1]) << 16) + ((uint32_t)(p[0]) << 24));
}

static inline void be32enc(void *pp, uint32_t x)
{
uint8_t *p = (uint8_t *)pp;
p[3] = x & 0xff;
p[2] = (x >> 8) & 0xff;
p[1] = (x >> 16) & 0xff;
p[0] = (x >> 24) & 0xff;
}

static inline uint32_t le32dec(const void *pp)
{
const uint8_t *p = (uint8_t const *)pp;
return ((uint32_t)(p[0]) + ((uint32_t)(p[1]) << 8) +
((uint32_t)(p[2]) << 16) + ((uint32_t)(p[3]) << 24));
}

static inline void le32enc(void *pp, uint32_t x)
{
uint8_t *p = (uint8_t *)pp;
p[0] = x & 0xff;
p[1] = (x >> 8) & 0xff;
p[2] = (x >> 16) & 0xff;
p[3] = (x >> 24) & 0xff;
}


typedef struct HMAC_SHA256Context {
SHA256_CTX ictx;
SHA256_CTX octx;
} HMAC_SHA256_CTX;

/* Initialize an HMAC-SHA256 operation with the given key. */
static void
HMAC_SHA256_Init(HMAC_SHA256_CTX *ctx, const void *_K, size_t Klen)
{
unsigned char pad[64];
unsigned char khash[32];
const unsigned char *K = _K;
size_t i;

/* If Klen > 64, the key is really SHA256(K). */
if (Klen > 64) {
SHA256_Init(&ctx->ictx);
SHA256_Update(&ctx->ictx, K, Klen);
SHA256_Final(khash, &ctx->ictx);
K = khash;
Klen = 32;
}

/* Inner SHA256 operation is SHA256(K xor [block of 0x36] || data). */
SHA256_Init(&ctx->ictx);
memset(pad, 0x36, 64);
for (i = 0; i < Klen; i++)
pad[i] ^= K[i];
SHA256_Update(&ctx->ictx, pad, 64);

/* Outer SHA256 operation is SHA256(K xor [block of 0x5c] || hash). */
SHA256_Init(&ctx->octx);
memset(pad, 0x5c, 64);
for (i = 0; i < Klen; i++)
pad[i] ^= K[i];
SHA256_Update(&ctx->octx, pad, 64);

/* Clean the stack. */
memset(khash, 0, 32);
}

/* Add bytes to the HMAC-SHA256 operation. */
static void
HMAC_SHA256_Update(HMAC_SHA256_CTX *ctx, const void *in, size_t len)
{
/* Feed data to the inner SHA256 operation. */
SHA256_Update(&ctx->ictx, in, len);
}

/* Finish an HMAC-SHA256 operation. */
static void
HMAC_SHA256_Final(unsigned char digest[32], HMAC_SHA256_CTX *ctx)
{
unsigned char ihash[32];

/* Finish the inner SHA256 operation. */
SHA256_Final(ihash, &ctx->ictx);

/* Feed the inner hash to the outer SHA256 operation. */
SHA256_Update(&ctx->octx, ihash, 32);

/* Finish the outer SHA256 operation. */
SHA256_Final(digest, &ctx->octx);

/* Clean the stack. */
memset(ihash, 0, 32);
}

/**
* PBKDF2_SHA256(passwd, passwdlen, salt, saltlen, c, buf, dkLen):
* Compute PBKDF2(passwd, salt, c, dkLen) using HMAC-SHA256 as the PRF, and
* write the output to buf. The value dkLen must be at most 32 * (2^32 - 1).
*/
static void
PBKDF2_SHA256(const uint8_t *passwd, size_t passwdlen, const uint8_t *salt,
size_t saltlen, uint64_t c, uint8_t *buf, size_t dkLen)
{
HMAC_SHA256_CTX PShctx, hctx;
size_t i;
uint8_t ivec[4];
uint8_t U[32];
uint8_t T[32];
uint64_t j;
int k;
size_t clen;

/* Compute HMAC state after processing P and S. */
HMAC_SHA256_Init(&PShctx, passwd, passwdlen);
HMAC_SHA256_Update(&PShctx, salt, saltlen);

/* Iterate through the blocks. */
for (i = 0; i * 32 < dkLen; i++) {
/* Generate INT(i + 1). */
be32enc(ivec, (uint32_t)(i + 1));

/* Compute U_1 = PRF(P, S || INT(i)). */
memcpy(&hctx, &PShctx, sizeof(HMAC_SHA256_CTX));
HMAC_SHA256_Update(&hctx, ivec, 4);
HMAC_SHA256_Final(U, &hctx);

/* T_i = U_1 ... */
memcpy(T, U, 32);

for (j = 2; j <= c; j++) {
/* Compute U_j. */
HMAC_SHA256_Init(&hctx, passwd, passwdlen);
HMAC_SHA256_Update(&hctx, U, 32);
HMAC_SHA256_Final(U, &hctx);

/* ... xor U_j ... */
for (k = 0; k < 32; k++)
T[k] ^= U[k];
}

/* Copy as many bytes as necessary into buf. */
clen = dkLen - i * 32;
if (clen > 32)
clen = 32;
memcpy(&buf[i * 32], T, clen);
}

/* Clean PShctx, since we never called _Final on it. */
memset(&PShctx, 0, sizeof(HMAC_SHA256_CTX));
}


#define ROTL(a, b) (((a) << (b)) | ((a) >> (32 - (b))))

static inline void xor_salsa8(uint32_t B[16], const uint32_t Bx[16])
{
uint32_t x00,x01,x02,x03,x04,x05,x06,x07,x08,x09,x10,x11,x12,x13,x14,x15;
int i;

x00 = (B[ 0] ^= Bx[ 0]);
x01 = (B[ 1] ^= Bx[ 1]);
x02 = (B[ 2] ^= Bx[ 2]);
x03 = (B[ 3] ^= Bx[ 3]);
x04 = (B[ 4] ^= Bx[ 4]);
x05 = (B[ 5] ^= Bx[ 5]);
x06 = (B[ 6] ^= Bx[ 6]);
x07 = (B[ 7] ^= Bx[ 7]);
x08 = (B[ 8] ^= Bx[ 8]);
x09 = (B[ 9] ^= Bx[ 9]);
x10 = (B[10] ^= Bx[10]);
x11 = (B[11] ^= Bx[11]);
x12 = (B[12] ^= Bx[12]);
x13 = (B[13] ^= Bx[13]);
x14 = (B[14] ^= Bx[14]);
x15 = (B[15] ^= Bx[15]);
for (i = 0; i < 8; i += 2) {
/* Operate on columns. */
x04 ^= ROTL(x00 + x12, 7); x09 ^= ROTL(x05 + x01, 7);
x14 ^= ROTL(x10 + x06, 7); x03 ^= ROTL(x15 + x11, 7);

x08 ^= ROTL(x04 + x00, 9); x13 ^= ROTL(x09 + x05, 9);
x02 ^= ROTL(x14 + x10, 9); x07 ^= ROTL(x03 + x15, 9);

x12 ^= ROTL(x08 + x04, 13); x01 ^= ROTL(x13 + x09, 13);
x06 ^= ROTL(x02 + x14, 13); x11 ^= ROTL(x07 + x03, 13);

x00 ^= ROTL(x12 + x08, 18); x05 ^= ROTL(x01 + x13, 18);
x10 ^= ROTL(x06 + x02, 18); x15 ^= ROTL(x11 + x07, 18);

/* Operate on rows. */
x01 ^= ROTL(x00 + x03, 7); x06 ^= ROTL(x05 + x04, 7);
x11 ^= ROTL(x10 + x09, 7); x12 ^= ROTL(x15 + x14, 7);

x02 ^= ROTL(x01 + x00, 9); x07 ^= ROTL(x06 + x05, 9);
x08 ^= ROTL(x11 + x10, 9); x13 ^= ROTL(x12 + x15, 9);

x03 ^= ROTL(x02 + x01, 13); x04 ^= ROTL(x07 + x06, 13);
x09 ^= ROTL(x08 + x11, 13); x14 ^= ROTL(x13 + x12, 13);

x00 ^= ROTL(x03 + x02, 18); x05 ^= ROTL(x04 + x07, 18);
x10 ^= ROTL(x09 + x08, 18); x15 ^= ROTL(x14 + x13, 18);
}
B[ 0] += x00;
B[ 1] += x01;
B[ 2] += x02;
B[ 3] += x03;
B[ 4] += x04;
B[ 5] += x05;
B[ 6] += x06;
B[ 7] += x07;
B[ 8] += x08;
B[ 9] += x09;
B[10] += x10;
B[11] += x11;
B[12] += x12;
B[13] += x13;
B[14] += x14;
B[15] += x15;
}

void scrypt_1024_1_1_256_sp(const char *input, char *output, char *scratchpad)
{
uint8_t B[128];
uint32_t X[32];
uint32_t *V;
uint32_t i, j, k;

V = (uint32_t *)(((uintptr_t)(scratchpad) + 63) & ~ (uintptr_t)(63));

PBKDF2_SHA256((const uint8_t *)input, 80, (const uint8_t *)input, 80, 1, B, 128);

for (k = 0; k < 32; k++)
X[k] = le32dec(&B[4 * k]);

for (i = 0; i < 1024; i++) {
memcpy(&V[i * 32], X, 128);
xor_salsa8(&X[0], &X[16]);
xor_salsa8(&X[16], &X[0]);
}
for (i = 0; i < 1024; i++) {
j = 32 * (X[16] & 1023);
for (k = 0; k < 32; k++)
X[k] ^= V[j + k];
xor_salsa8(&X[0], &X[16]);
xor_salsa8(&X[16], &X[0]);
}

for (k = 0; k < 32; k++)
le32enc(&B[4 * k], X[k]);

PBKDF2_SHA256((const uint8_t *)input, 80, B, 128, 1, (uint8_t *)output, 32);
}

void scrypt_1024_1_1_256(const char *input, char *output)
{
char scratchpad[SCRYPT_SCRATCHPAD_SIZE];
scrypt_1024_1_1_256_sp(input, output, scratchpad);
}

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Project Specs

  • Abbreviation:BIC
  • Algorithm:Scrypt
  • Max Coins:84,096,000
  • Block Time:15 Seconds
  • Difficulty Retarget Time:0.2 days
  • Premine:9 blocks as test
  • Starting difficulty:0.00024414
  • Ports:RPC - 28920, P2P - 28950
  • Coins Per Block:20
  • Date Founded:December 23, 2013
  • Date of Rebrand:September 28, 2015
  • Current Developer:CryptoCoderz