base64(1) [osx man page]

base64(1)						    BSD General Commands Manual 						 base64(1)

NAME

     base64 -- Encode and decode using Base64 representation

SYNOPSIS

     base64 [-d | -h | -v | -D] [-b count] [-i input_file] [-o output_file]

DESCRIPTION

     base64 encodes and decodes Base64 data, as specified in RFC 4648. With no options, base64 reads raw data from stdin and writes encoded data
     as a continuous block to stdout.

OPTIONS

     The following options are available:
     -b count
     --break=count	  Insert line breaks every count characters. Default is 0, which generates an unbroken stream.

     -d
     --debug		  Print verbose log messages during processing.

     -D
     --decode		  Decode incoming Base64 stream into binary data.

     -h
     --help		  Print usage summary and exit.

     -i input_file
     --input=input_file   Read input from input_file.  Default is stdin; passing - also represents stdin.

     -o output_file
     --output=output_file
			  Write output to output_file.	Default is stdout; passing - also represents stdout.

     -v
     --version		  Print build version and exit.

SEE ALSO

     openssl(1), wikipedia page <http://en.wikipedia.org/wiki/Base64>, RFC 4648 <http://tools.ietf.org/html/rfc4648>

Mac OS X 10.7							 February 8, 2011						     Mac OS X 10.7

BIO_f_base64(3) 						      OpenSSL							   BIO_f_base64(3)

NAME

       BIO_f_base64 - base64 BIO filter

SYNOPSIS

	#include <openssl/bio.h>
	#include <openssl/evp.h>

	BIO_METHOD *   BIO_f_base64(void);

DESCRIPTION

       BIO_f_base64() returns the base64 BIO method. This is a filter BIO that base64 encodes any data written through it and decodes any data
       read through it.

       Base64 BIOs do not support BIO_gets() or BIO_puts().

       BIO_flush() on a base64 BIO that is being written through is used to signal that no more data is to be encoded: this is used to flush the
       final block through the BIO.

       The flag BIO_FLAGS_BASE64_NO_NL can be set with BIO_set_flags() to encode the data all on one line or expect the data to be all on one
       line.

NOTES

       Because of the format of base64 encoding the end of the encoded block cannot always be reliably determined.

RETURN VALUES

       BIO_f_base64() returns the base64 BIO method.

EXAMPLES

       Base64 encode the string "Hello World
" and write the result to standard output:

	BIO *bio, *b64;
	char message[] = "Hello World 
";

	b64 = BIO_new(BIO_f_base64());
	bio = BIO_new_fp(stdout, BIO_NOCLOSE);
	bio = BIO_push(b64, bio);
	BIO_write(bio, message, strlen(message));
	BIO_flush(bio);

	BIO_free_all(bio);

       Read Base64 encoded data from standard input and write the decoded data to standard output:

	BIO *bio, *b64, *bio_out;
	char inbuf[512];
	int inlen;

	b64 = BIO_new(BIO_f_base64());
	bio = BIO_new_fp(stdin, BIO_NOCLOSE);
	bio_out = BIO_new_fp(stdout, BIO_NOCLOSE);
	bio = BIO_push(b64, bio);
	while((inlen = BIO_read(bio, inbuf, 512)) > 0)
	       BIO_write(bio_out, inbuf, inlen);

	BIO_free_all(bio);

BUGS

       The ambiguity of EOF in base64 encoded data can cause additional data following the base64 encoded block to be misinterpreted.

       There should be some way of specifying a test that the BIO can perform to reliably determine EOF (for example a MIME boundary).

SEE ALSO

       TBA

1.0.1e								    2013-02-11							   BIO_f_base64(3)