104 lines
3.8 KiB
HTML
Executable File
104 lines
3.8 KiB
HTML
Executable File
<?xml version="1.0" ?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>OPENSSL_hexchar2int</title>
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<meta http-equiv="content-type" content="text/html; charset=utf-8" />
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<link rev="made" href="mailto:root@localhost" />
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</head>
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<body style="background-color: white">
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<!-- INDEX BEGIN -->
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<div name="index">
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<p><a name="__index__"></a></p>
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<ul>
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<li><a href="#name">NAME</a></li>
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<li><a href="#synopsis">SYNOPSIS</a></li>
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<li><a href="#description">DESCRIPTION</a></li>
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<li><a href="#return_values">RETURN VALUES</a></li>
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<li><a href="#copyright">COPYRIGHT</a></li>
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</ul>
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<hr name="index" />
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</div>
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<!-- INDEX END -->
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<p>
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</p>
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<hr />
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<h1><a name="name">NAME</a></h1>
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<p>OPENSSL_hexchar2int,
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OPENSSL_hexstr2buf_ex, OPENSSL_hexstr2buf,
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OPENSSL_buf2hexstr_ex, OPENSSL_buf2hexstr
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- Hex encoding and decoding functions</p>
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<p>
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</p>
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<hr />
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<h1><a name="synopsis">SYNOPSIS</a></h1>
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<pre>
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#include <openssl/crypto.h></pre>
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<pre>
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int OPENSSL_hexchar2int(unsigned char c);
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int OPENSSL_hexstr2buf_ex(unsigned char *buf, size_t buf_n, long *buflen,
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const char *str);
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unsigned char *OPENSSL_hexstr2buf(const char *str, long *len);
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int OPENSSL_buf2hexstr_ex(char *str, size_t str_n, size_t *strlen,
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const unsigned char *buf, long buflen);
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char *OPENSSL_buf2hexstr(const unsigned char *buf, long buflen);</pre>
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<p>
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</p>
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<hr />
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<h1><a name="description">DESCRIPTION</a></h1>
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<p>OPENSSL_hexchar2int() converts a hexadecimal character to its numeric
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equivalent.</p>
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<p>OPENSSL_hexstr2buf_ex() decodes the hex string <strong>str</strong> and places the
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resulting string of bytes in the given <em>buf</em>.
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<em>buf_n</em> gives the size of the buffer.
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If <em>buflen</em> is not NULL, it is filled in with the result length.
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To find out how large the result will be, call this function with NULL
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for <em>buf</em>.
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Colons between two-character hex "bytes" are accepted and ignored.
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An odd number of hex digits is an error.</p>
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<p>OPENSSL_hexstr2buf() does the same thing as OPENSSL_hexstr2buf_ex(),
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but allocates the space for the result, and returns the result.
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The memory is allocated by calling <code>OPENSSL_malloc()</code> and should be
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released by calling <code>OPENSSL_free()</code>.</p>
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<p>OPENSSL_buf2hexstr_ex() encodes the contents of the given <em>buf</em> with
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length <em>buflen</em> and places the resulting hexadecimal character string
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in the given <em>str</em>.
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<em>str_n</em> gives the size of the of the string buffer.
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If <em>strlen</em> is not NULL, it is filled in with the result length.
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To find out how large the result will be, call this function with NULL
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for <em>str</em>.</p>
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<p>OPENSSL_buf2hexstr() does the same thing as OPENSSL_buf2hexstr_ex(),
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but allocates the space for the result, and returns the result.
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The memory is allocated by calling <code>OPENSSL_malloc()</code> and should be
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released by calling <code>OPENSSL_free()</code>.</p>
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<p>
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</p>
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<hr />
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<h1><a name="return_values">RETURN VALUES</a></h1>
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<p>OPENSSL_hexchar2int returns the value of a decoded hex character,
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or -1 on error.</p>
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<p>OPENSSL_buf2hexstr() and OPENSSL_hexstr2buf()
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return a pointer to allocated memory, or NULL on error.</p>
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<p>OPENSSL_buf2hexstr_ex() and OPENSSL_hexstr2buf_ex() return 1 on
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success, or 0 on error.</p>
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<p>
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</p>
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<hr />
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<h1><a name="copyright">COPYRIGHT</a></h1>
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<p>Copyright 2016-2019 The OpenSSL Project Authors. All Rights Reserved.</p>
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<p>Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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<a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p>
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</body>
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</html>
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