PEM_read_bio_PUBKEY does not do the trick?

[heiko vonsachsen]

Dear all,
attached a small code example which does not work...

EVP_PKEY* pkey=PEM_read_bio_PUBKEY(mem,NULL,NULL,NULL) does not return any
value...can anybody please explaine me why? i've spend hours without any
results!
thanks in advance,
Heiko
_______________________________________


#include "stdafx.h"
#include "string.h"
#include "openssl\evp.h"
#include "openssl\ecdsa.h"
#include "openssl\pem.h"
#include "openssl\sha.h"
#include "openssl\err.h"

int CalculateHash()
{
    CRYPTO_malloc_init();
    OpenSSL_add_all_algorithms();
    unsigned char sha1sum[SHA_DIGEST_LENGTH];
    const char sig[] =
"BDUwMwIXGkSR09jzv2juC1I/kV1BrV37un16SzoCGEUtRZ7kdguqV8HtZ9LcecMZmCZOOTsD8A==";
    char* data =
";\"4399901587311\";\"20063650118-01679\";\"4313822000018\";\"20091201143327230\";";
    char* key =
"MEkwEwYHKoZIzj0CAQYIKoZIzj0DAQEDMgAEwiljC8QSd5Q89jqg+Qk5KmFXdbbR+006PMkmr9eGEmDTsB9GVY9OTx8+b3nNqdMS";

    // make hash of data
    SHA1((const unsigned char*)data, strlen(data), sha1sum);

    // load key
    BIO* b64 = BIO_new(BIO_f_base64());
    BIO* mem = BIO_new(BIO_s_mem());
    BIO_puts(mem,key);
    mem = BIO_push(b64,mem);
    EVP_PKEY* pkey=PEM_read_bio_PUBKEY(mem,NULL,NULL,NULL);
    if( pkey == 0){
      ERR_print_errors_fp(stdout);
    }
    EC_KEY* eckey = EVP_PKEY_get1_EC_KEY(pkey);

    // verify signature
    int ret = ECDSA_verify(0, sha1sum,SHA_DIGEST_LENGTH, (const unsigned
char *) &sig, strlen(sig), eckey);
    if (ret == -1)
    {
        /* error */
    }
    else if (ret == 0)
    {
        /* incorrect signature */
    }
    else   /* ret == 1 */
    {
        /* signature ok */
    }
    return ret;
}