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    Command:

    RAND_load_file

    
    
    

    SYNOPSIS

            #include <openssl/rand.h>
    
            const char *RAND_file_name(char *buf, size_t num);
    
            int RAND_load_file(const char *filename, long max_bytes);
    
            int RAND_write_file(const char *filename);
    
    
    

    DESCRIPTION

           RAND_file_name() generates a default path for the random seed file. buf
           points to a buffer of size num in which to store the filename. The seed
           file is $RANDFILE if that environment variable is set, $HOME/.rnd
           otherwise. If $HOME is not set either, or num is too small for the path
           name, an error occurs.
    
           RAND_load_file() reads a number of bytes from file filename and adds
           them to the PRNG. If max_bytes is non-negative, up to to max_bytes are
           read; starting with OpenSSL 0.9.5, if max_bytes is -1, the complete
           file is read.
    
           RAND_write_file() writes a number of random bytes (currently 1024) to
           file filename which can be used to initialize the PRNG by calling
           RAND_load_file() in a later session.
    
    
    

    RETURN VALUES

           RAND_load_file() returns the number of bytes read.
    
           RAND_write_file() returns the number of bytes written, and -1 if the
           bytes written were generated without appropriate seed.
    
           RAND_file_name() returns a pointer to buf on success, and NULL on
           error.
    
    
    

    SEE ALSO

           rand(3), RAND_add(3), RAND_cleanup(3)
    
    
    

    HISTORY

           RAND_load_file(), RAND_write_file() and RAND_file_name() are available
           in all versions of SSLeay and OpenSSL.
    
    
    

    1.0.1e 2013-02-11 RAND_load_file(3)

    
    
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