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I am using this code:

void check_cert(SSL* ssl)

//ssl initiation
const SSL_METHOD *meth;
meth = SSLv3_method();
SSL_CTX *ctx;
SSL *_ssl;
ctx = SSL_CTX_new(meth);
int result = 0;
//getting the CA certificate

result = SSL_CTX_load_verify_locations(ctx1, "cacert.pem", NULL);
//result = SSL_CTX_load_verify_locations(ctx, NULL, "/home/cdac/Desktop/test/cert");
printf("\nCA load result = %d", result);

//_ssl = SSL_new(ctx);
SSL_CTX_set_verify(ctx1, SSL_VERIFY_PEER, NULL);

SSL_CTX_set_verify_depth(ctx1, 1);
int result_long = SSL_get_verify_result(ssl);
printf("\nCertificate Check Result: %d", result_long);
if (SSL_get_verify_result(ssl) != X509_V_OK)
        printf("\nCertiticate Verification Failed\n");
        printf("\nCertiticate Verification Succeeded");

cacert.pem is the CA certificate. When i execute this I get this:

CA load result = 1
Certificate Check Result: 20
Certiticate Verification Failed

Code 20 means:

X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: unable to get local issuer certificate

the issuer certificate could not be found: this occurs if the issuer certificate of an untrusted certificate cannot be found.

So can anyone help me? Where this fails?

The CA certificate is loading fine. (The load result returns 1).

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