Multiple encrypt / decrypt with same BIO

[Manuel Arguelles]

I have managed to encrypt / decrypt data to one file using bio methods,
however is it possible to encrypt to different files using the same bio
cipher? for example something like this:

BIO *file = BIO_new_file("out.bin", "w");
BIO *buffer = BIO_new(BIO_f_buffer());
BIO *cipher = BIO_new(BIO_f_cipher());
BIO *file2 = BIO_new_file("out-2.bin", "w");

BIO_push(cipher, buffer);
BIO_push(buffer, file);

BIO_set_cipher(cipher, EVP_rc4(), key, NULL, 1);

BIO_write(cipher, data1, data1size);
BIO_flush(cipher);

BIO_reset(buffer);
BIO_pop(file);
BIO_push(buffer, file2);

BIO_write(cipher, data2, data2size);
BIO_flush(cipher);

the data of file2 gets corrupted, am I missing something?

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