The Cash Library is your programmable gateway into the Nexa full node. The API interface provides a collection of methods to perform all of the critical actions necessary to build (advanced) decentralized applications (dApps).

cashlib.h

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Contains the Header template.

cashlib.cpp

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Contains the C++ source code.

Did you know? — The Cash Library API provides a Nexa developer with everything she needs to build production-ready decentralized applications.

Bin2Hex

int Bin2Hex(
    unsigned char *val,
    int length,
    char *result,
    unsigned int resultLen
);

GetPubKey

int GetPubKey(
    unsigned char *keyData,
    unsigned char *result,
    unsigned int resultLen
);

hash160

void hash160(
    const unsigned char* data,
    unsigned char len,
    unsigned char* result
);

hash256

void hash256(
    const unsigned char* data,
    unsigned char len,
    unsigned char* result
);

RandomBytes

Return random bytes from cryptographically acceptable random sources.

Params ↪ unsigned char • int

Returns ↩ int

int RandomBytes(
    unsigned char *buf,
    int num
);

Possible Use Cases

• Private keey seed generation
• Object ID generation

sha256

void sha256(
    const unsigned char* data,
    unsigned char len,
    unsigned char* result
);

SignBchTxSchnorr

int SignBchTxSchnorr(
    unsigned char *txData,
    int txbuflen,
    unsigned int inputIdx,
    int64_t inputAmount,
    unsigned char *prevoutScript,
    uint32_t priorScriptLen,
    uint32_t nHashType,
    unsigned char *keyData,
    unsigned char *result,
    unsigned int resultLen
);

SignHashECDSA

int SignHashECDSA(
    const unsigned char *hash,
    unsigned char *keyData,
    unsigned char *result,
    unsigned int resultLen
);

SignHashSchnorr

int SignHashSchnorr(
    const unsigned char *hash,
    unsigned char *keyData,
    unsigned char *result,
    unsigned int resultLen
);

SignTxECDSA

int SignTxECDSA(
    unsigned char *txData,
    int txbuflen,
    unsigned int inputIdx,
    int64_t inputAmount,
    unsigned char *prevoutScript,
    uint32_t priorScriptLen,
    uint32_t nHashType,
    unsigned char *keyData,
    unsigned char *result,
    unsigned int resultLen
);

SignTxSchnorr

int SignTxSchnorr(
    unsigned char *txData,
    int txbuflen,
    unsigned int inputIdx,
    int64_t inputAmount,
    unsigned char *prevoutScript,
    uint32_t priorScriptLen,
    unsigned char *hashType,
    unsigned int hashTypeLen,
    unsigned char *keyData,
    unsigned char *result,
    unsigned int resultLen
);

txid

int txid(
    unsigned char *txData,
    int txbuflen,
    unsigned char *result
);

txidem

int txidem(
    unsigned char *txData,
    int txbuflen,
    unsigned char *result
);