[libssh2] PEM_read_RSAPrivateKey doesn't return

Hi,

I have build libssh2 version 0.18 on a Windows 32bit platform (through
the dsw file), using openssl-0.9.8e for the cryptographic operations.

This is how I built my openssl libraries.

        perl Configure VC-WIN32 no-idea no-mdc2 no-rc5

        ms/do_masm.bat

        nmake -f ms/ntdll.mak

It seems to me that in openssl.c of libssh2, function calls to read the
given private key file (PEM_read_bio_RSAPrivateKey on line 228 and
PEM_read_DSAPrivateKey on line 249) do not work. In fact, those calls do
not even return.

If I use different functions, PEM_read_bio_RSAPrivateKey and
PEM_read_bio_DSAPrivateKey, the operation succeeds, given that the
private key file content is read into the buffer.

Does anyone know why this is happening? I have pasted the code snippets
below for your reference.

Thank you.

- - - - - - - - - - -

#define BIO_BUFFER_DATA_SIZE 2048

BIO* getBufferBIOForFile(FILE *filePtr)

{

    BUF_MEM *bioBuffer;

    BIO *retBioPtr;

    int dataRead;

    retBioPtr = BIO_new(BIO_s_mem()); /* Create a memory BIO */

    bioBuffer = malloc(sizeof(BUF_MEM));

    bioBuffer->data = malloc(BIO_BUFFER_DATA_SIZE);

    dataRead = (int)fread(bioBuffer->data, sizeof( char ),
BIO_BUFFER_DATA_SIZE, filePtr);

    bioBuffer->data[dataRead] = '\0';

    bioBuffer->length = (int)strlen(bioBuffer->data);

    bioBuffer->max = (int)strlen(bioBuffer->data);

    BIO_puts(retBioPtr, bioBuffer->data);

    free(bioBuffer->data);

    free(bioBuffer);

    return retBioPtr;

}/* end getBufferBIOForFile */

int

_libssh2_rsa_new_private(libssh2_rsa_ctx ** rsa,

                         LIBSSH2_SESSION * session,

                         FILE * fp, unsigned const char *passphrase)

{

    BIO *bufferPtr;

    (void) session;

    if (!EVP_get_cipherbyname("des")) {

/* If this cipher isn't loaded it's a pretty good indication that none
are.

 * I have *NO DOUBT* that there's a better way to deal with this
($#&%#$(%$#(

 * Someone buy me an OpenSSL manual and I'll read up on it.

 */

        OpenSSL_add_all_ciphers();

    }

    bufferPtr = getBufferBIOForFile(fp);

    /*

    *rsa = PEM_read_RSAPrivateKey(fp, NULL, (void *) passphrase_cb,

                                  (void *) passphrase);

    */

    *rsa = PEM_read_bio_RSAPrivateKey(bufferPtr, NULL, (void *)
passphrase_cb,

                                  (void *) passphrase);

    if (!*rsa) {

        return -1;

    }

    return 0;

}

int

_libssh2_dsa_new_private(libssh2_dsa_ctx ** dsa,

                         LIBSSH2_SESSION * session,

                         FILE * fp, unsigned const char *passphrase)

{

    BIO *bufferPtr;

    (void) session;

    if (!EVP_get_cipherbyname("des")) {

/* If this cipher isn't loaded it's a pretty good indication that none
are.

 * I have *NO DOUBT* that there's a better way to deal with this
($#&%#$(%$#(

 * Someone buy me an OpenSSL manual and I'll read up on it.

 */

        OpenSSL_add_all_ciphers();

    }

    bufferPtr = getBufferBIOForFile(fp);

    /*

    *dsa = PEM_read_DSAPrivateKey(fp, NULL, (void *) passphrase_cb,

                                  (void *) passphrase);

    */

    *dsa = PEM_read_bio_DSAPrivateKey(bufferPtr, NULL, (void *)
passphrase_cb,

                                  (void *) passphrase);

    if (!*dsa) {

        return -1;

    }

    return 0;

}

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Received on 2007-12-12