chromium/third_party/boringssl/src/crypto/base64/base64.c

/* Copyright (C) 1995-1998 Eric Young ([email protected])
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young ([email protected]).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson ([email protected]).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young ([email protected])"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson ([email protected])"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.] */

#include <openssl/base64.h>

#include <assert.h>
#include <limits.h>
#include <string.h>

#include "../internal.h"


// constant_time_lt_args_8 behaves like |constant_time_lt_8| but takes |uint8_t|
// arguments for a slightly simpler implementation.
static inline uint8_t constant_time_lt_args_8(uint8_t a, uint8_t b) {}

// constant_time_in_range_8 returns |CONSTTIME_TRUE_8| if |min| <= |a| <= |max|
// and |CONSTTIME_FALSE_8| otherwise.
static inline uint8_t constant_time_in_range_8(uint8_t a, uint8_t min,
                                               uint8_t max) {}

// Encoding.

static uint8_t conv_bin2ascii(uint8_t a) {}

static_assert;

int EVP_EncodedLength(size_t *out_len, size_t len) {}

EVP_ENCODE_CTX *EVP_ENCODE_CTX_new(void) {}

void EVP_ENCODE_CTX_free(EVP_ENCODE_CTX *ctx) {}

void EVP_EncodeInit(EVP_ENCODE_CTX *ctx) {}

void EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, uint8_t *out, int *out_len,
                      const uint8_t *in, size_t in_len) {}

void EVP_EncodeFinal(EVP_ENCODE_CTX *ctx, uint8_t *out, int *out_len) {}

size_t EVP_EncodeBlock(uint8_t *dst, const uint8_t *src, size_t src_len) {}


// Decoding.

int EVP_DecodedLength(size_t *out_len, size_t len) {}

void EVP_DecodeInit(EVP_ENCODE_CTX *ctx) {}

static uint8_t base64_ascii_to_bin(uint8_t a) {}

// base64_decode_quad decodes a single “quad” (i.e. four characters) of base64
// data and writes up to three bytes to |out|. It sets |*out_num_bytes| to the
// number of bytes written, which will be less than three if the quad ended
// with padding.  It returns one on success or zero on error.
static int base64_decode_quad(uint8_t *out, size_t *out_num_bytes,
                              const uint8_t *in) {}

int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, uint8_t *out, int *out_len,
                     const uint8_t *in, size_t in_len) {}

int EVP_DecodeFinal(EVP_ENCODE_CTX *ctx, uint8_t *out, int *out_len) {}

int EVP_DecodeBase64(uint8_t *out, size_t *out_len, size_t max_out,
                     const uint8_t *in, size_t in_len) {}

int EVP_DecodeBlock(uint8_t *dst, const uint8_t *src, size_t src_len) {}