cpuminer-opt-gpu/algo/argon2/argon2d/argon2d-gate.c

#include "argon2d-gate.h"
#include "argon2d/argon2.h"

static const size_t INPUT_BYTES = 80;  // Lenth of a block header in bytes. Input Length = Salt Length (salt = input)
static const size_t OUTPUT_BYTES = 32; // Length of output needed for a 256-bit hash
static const unsigned int DEFAULT_ARGON2_FLAG = 2; //Same as ARGON2_DEFAULT_FLAGS

// Credits

void argon2d_crds_hash( void *output, const void *input )
{
	argon2_context context;
	context.out = (uint8_t *)output;
	context.outlen = (uint32_t)OUTPUT_BYTES;
	context.pwd = (uint8_t *)input;
	context.pwdlen = (uint32_t)INPUT_BYTES;
	context.salt = (uint8_t *)input; //salt = input
	context.saltlen = (uint32_t)INPUT_BYTES;
	context.secret = NULL;
	context.secretlen = 0;
	context.ad = NULL;
	context.adlen = 0;
	context.allocate_cbk = NULL;
	context.free_cbk = NULL;
	context.flags = DEFAULT_ARGON2_FLAG; // = ARGON2_DEFAULT_FLAGS
	// main configurable Argon2 hash parameters
	context.m_cost = 250; // Memory in KiB (~256KB)
	context.lanes = 4;    // Degree of Parallelism
	context.threads = 1;  // Threads
	context.t_cost = 1;   // Iterations

	argon2_ctx( &context, Argon2_d );
}

int scanhash_argon2d_crds( int thr_id, struct work *work, uint32_t max_nonce,
                      uint64_t *hashes_done )
{
        uint32_t _ALIGN(64) endiandata[20];
        uint32_t _ALIGN(64) hash[8];
        uint32_t *pdata = work->data;
        uint32_t *ptarget = work->target;

        const uint32_t first_nonce = pdata[19];
        const uint32_t Htarg = ptarget[7];

        uint32_t nonce = first_nonce;

        swab32_array( endiandata, pdata, 20 );

        do {
                be32enc(&endiandata[19], nonce);
                argon2d_crds_hash( hash, endiandata );
                if ( hash[7] <= Htarg && fulltest( hash, ptarget ) )
                {
                        pdata[19] = nonce;
                        *hashes_done = pdata[19] - first_nonce;
                        work_set_target_ratio(work, hash);
                        return 1;
                }
                nonce++;
        } while (nonce < max_nonce && !work_restart[thr_id].restart);

        pdata[19] = nonce;
        *hashes_done = pdata[19] - first_nonce + 1;
        return 0;
}

bool register_argon2d_crds_algo( algo_gate_t* gate )
{
        gate->scanhash = (void*)&scanhash_argon2d_crds;
        gate->hash = (void*)&argon2d_crds_hash;
        gate->set_target = (void*)&scrypt_set_target;
        gate->optimizations = SSE2_OPT | AVX2_OPT;
}

// Dynamic

void argon2d_dyn_hash( void *output, const void *input )
{
    argon2_context context;
    context.out = (uint8_t *)output;
    context.outlen = (uint32_t)OUTPUT_BYTES;
    context.pwd = (uint8_t *)input;
    context.pwdlen = (uint32_t)INPUT_BYTES;
    context.salt = (uint8_t *)input; //salt = input
    context.saltlen = (uint32_t)INPUT_BYTES;
    context.secret = NULL;
    context.secretlen = 0;
    context.ad = NULL;
    context.adlen = 0;
    context.allocate_cbk = NULL;
    context.free_cbk = NULL;
    context.flags = DEFAULT_ARGON2_FLAG; // = ARGON2_DEFAULT_FLAGS
    // main configurable Argon2 hash parameters
    context.m_cost = 500;  // Memory in KiB (512KB)
    context.lanes = 8;     // Degree of Parallelism
    context.threads = 1;   // Threads
    context.t_cost = 2;    // Iterations

    argon2_ctx( &context, Argon2_d );
}

int scanhash_argon2d_dyn( int thr_id, struct work *work, uint32_t max_nonce,
                      uint64_t *hashes_done )
{
        uint32_t _ALIGN(64) endiandata[20];
        uint32_t _ALIGN(64) hash[8];
        uint32_t *pdata = work->data;
        uint32_t *ptarget = work->target;

        const uint32_t first_nonce = pdata[19];
        const uint32_t Htarg = ptarget[7];

        uint32_t nonce = first_nonce;

        swab32_array( endiandata, pdata, 20 );

        do {
                be32enc(&endiandata[19], nonce);
                argon2d_dyn_hash( hash, endiandata );
                if ( hash[7] <= Htarg && fulltest( hash, ptarget ) )
                {
                        pdata[19] = nonce;
                        *hashes_done = pdata[19] - first_nonce;
                        work_set_target_ratio(work, hash);
                        return 1;
                }
                nonce++;
        } while (nonce < max_nonce && !work_restart[thr_id].restart);

        pdata[19] = nonce;
        *hashes_done = pdata[19] - first_nonce + 1;
        return 0;
}

bool register_argon2d_dyn_algo( algo_gate_t* gate )
{
        gate->scanhash = (void*)&scanhash_argon2d_dyn;
        gate->hash = (void*)&argon2d_dyn_hash;
        gate->set_target = (void*)&scrypt_set_target;
        gate->optimizations = SSE2_OPT | AVX2_OPT;
}