> From: owner-openssl-us...@openssl.org On Behalf Of krishnamurthy
santhanam
> Sent: Tuesday, 31 August, 2010 13:33
> #include<stdio.h>
> writekey(RSA *key2)
You're obviously using a C89 (or earlier) compiler or mode.
Snipped most non-I/O steps:
> {
> EVP_PKEY *pkey;
> FILE *fp;
> //BIO *file;
> OpenSSL_add_all_ciphers();
> OpenSSL_add_all_algorithms();
Aside: add_all_algorithms *includes* add_all_ciphers
> if(!(fp = fopen("private1.pem", "w"))) {
> if(!PEM_write_PrivateKey(fp, pkey,NULL,NULL,0,NULL,NULL)){
> close(fp);
> if(!(fp = fopen("public1.pem", "w"))) {
> if(!PEM_write_PUBKEY(fp, pkey)){
> close(fp);
close() is not the correct routine to close a stdio FILE*.
It doesn't even take the correct type of argument, but
your compiler wasn't required to warn you because you
didn't include its header (e.g. unistd.h) and in C<=89
undeclared functions default to int(/*unspecified*/).
Since you didn't close the files, no data actually got written
to them, so there was nothing there for the PEM_read's to read.
Use fclose. And see if you can use a C99 compiler, or at least
a C89 compiler with better warnings (like gcc -Wimplicit).
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