get_key_info_bchain.c

Example of retrieving information from a blockchain private key.

See Note on examples.

#include <string.h>
#include <stdlib.h>
#include <stdio.h>
 
#include "dinamo.h" /* header of 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[] = "Test_Key";
 
    BYTE see = DN_BCHAIN_VER_BIP32_TESTNET;
 
    BYTE pbKey[DN_BCHAIN_MAX_PBK_LEN];
    DWORD dwKeyLen = 0;
 
    DN_BCHAIN_KEY_INFO stKeyInfo = {0};
    DWORD dwKeyInfoLen = sizeof(stKeyInfo);
 
    //  Inicializa as bibliotecas do Dinamo
    nRet =  DInitialize(0);
    if (nRet)
    {
        printf("Function failure: DInitialize \nError code: %d\n", nRet);
        goto clean;
    }
    printf("Libraries initialized.\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("Function failure: DOpenSession \nError code: %d\n", nRet);
        goto clean;
    }
    printf("Session with Dinamo established.\n");
 
    //  Cria chave de testes
    nRet = DBchainCreateXPrv(hSession,
                             DN_BCHAIN_BIP32_XPRV,
                             EXPORTABLE_KEY,
                             szId,
                             &ver,
                             sizeof(see),
                             0);
    if(nRet)
    {
        printf("Function failed: DBchainCreateXPrv \nError code: %d\n", nRet);
        goto clean;
    }
    printf("Bip 32 key created successfully.\n");
 
    //  Recupera informações da chave privada
    nRet = DBchainGetKeyInfo(hSession,
                             0,
                             szId,
                             &stKeyInfo,
                             &dwKeyInfoLen);
    if (nRet)
    {
        printf("Function failed: DBchainGetKeyInfo \nError code: %d\n", nRet);
        goto clean;
    }
    printf("Private key information successfully retrieved.\n");
 
    clean:
 
    nRet = DRemoveObj(hSession, szId);
    if (nRet)
    {
        printf("Function failed: DRemoveObj \nError code: %d\n", nRet);
        goto clean;
    }
    printf("Bchain key removed from HSM.\n");
 
    if (hSession) {
        DCloseSession(&hSession, 0);
        printf("Session closed.\n");
    }
 
    DFinalize();
    printf("Libraries finished.\n");
 
    return nRet;
}