get_pub_key_bchain.c

Example of exporting a blockchain public key.

See Note on examples.

#include <string.h>
#include <stdlib.h>
#include <stdio.h>
 
#include "dinamo.h" /* header do Dinamo */
 
#define HOST_ADDR       "127.0.0.1"
#define USER_ID         "master"
#define USER_PWD        "12345678"
 
int main()
{
    int nRet = 0;
    struct AUTH_PWD authPwd;
    HSESSIONCTX hSession = NULL;
 
    char szId[] = "Chave_Teste";
 
    BYTE ver = DN_BCHAIN_VER_BIP32_TESTNET;
 
    BYTE pbKey[DN_BCHAIN_MAX_PBK_LEN];
    DWORD dwKeyLen = 0;
 
    //Inicializa as bibliotecas do Dinamo
    nRet = DInitialize(0);
    if (nRet)
    {
        printf("Falha na funcao: DInitialize \nCodigo de erro: %d\n", nRet);
        goto clean;
    }
 
    printf("Bibliotecas inicializadas.\n");
 
    //Inicializa a estrutura para conexao com o HSM
    strncpy(authPwd.szAddr, HOST_ADDR, sizeof(authPwd.szAddr));
    authPwd.nPort = DEFAULT_PORT;
    strncpy(authPwd.szUserId, USER_ID, sizeof(authPwd.szUserId));
    strncpy(authPwd.szPassword, USER_PWD, sizeof(authPwd.szPassword));
 
    nRet = DOpenSession(&hSession, SS_USER_PWD, (BYTE *)&authPwd,
                        sizeof(authPwd), ENCRYPTED_CONN);
    if (nRet)
    {
        printf("Falha na funcao: DOpenSession \nCodigo de erro: %d\n", nRet);
        goto clean;
    }
 
    printf("Sessao com o Dinamo estabelecida.\n");
 
    //Cria chave de testes
    nRet = DBchainCreateXPrv(hSession,
                             DN_BCHAIN_BIP32_XPRV,
                             EXPORTABLE_KEY,
                             szId,
                             &ver,
                             sizeof(ver),
                             0);
    if(nRet)
    {
        printf("Falha na funcao: DBchainCreateXPrv \nCodigo de erro: %d\n", nRet);
        goto clean;
    }
 
    printf("Chave Bip 32 criada com sucesso.\n");
 
    //Exporta chave pública
    nRet = DBchainGetPubKey(hSession,
                            DN_BCHAIN_PBK_BIP340,
                            szId,
                            NULL,
                            &dwKeyLen,
                            0);
    if (nRet)
    {
        printf("Falha na funcao: DBchainGetPubKey \nCodigo de erro: %d\n", nRet);
        goto clean;
    }
 
    printf("Chave publica exportada com sucesso.\n");
 
    clean:
 
    nRet = DRemoveObj(hSession, szId);
    if (nRet)
    {
        printf("Falha na funcao: DRemoveObj \nCodigo de erro: %d\n", nRet);
        goto clean;
    }
    printf("Chave Bchain removida do HSM.\n");
 
    if (hSession) {
        DCloseSession(&hSession, 0);
        printf("Sessao encerrada.\n");
    }
 
    DFinalize();
    printf("Bibliotecas finalizadas.\n");
 
    return nRet;
}