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c1131e6a0e
Fixes #10366 The one place that actually used was in the legacy printing of ecparams. This has been replaced by the pointtobuf variant. The ecparam app was using one of these functions - this line has just been removed as another PR will remove all the code generated lines.. Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org> (Merged from https://github.com/openssl/openssl/pull/13294)
81 lines
2.9 KiB
Plaintext
81 lines
2.9 KiB
Plaintext
=pod
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=head1 NAME
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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
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=head1 SYNOPSIS
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#include <openssl/crypto.h>
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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, const char sep);
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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, const char sep);
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char *OPENSSL_buf2hexstr(const unsigned char *buf, long buflen);
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=head1 DESCRIPTION
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OPENSSL_hexchar2int() converts a hexadecimal character to its numeric
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equivalent.
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OPENSSL_hexstr2buf_ex() decodes the hex string B<str> and places the
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resulting string of bytes in the given I<buf>.
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The character I<sep> is the separator between the bytes, setting this to '\0'
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means that there is no separator.
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I<buf_n> gives the size of the buffer.
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If I<buflen> 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 I<buf>.
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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.
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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. It uses a
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default separator of ':'.
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The memory is allocated by calling OPENSSL_malloc() and should be
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released by calling OPENSSL_free().
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OPENSSL_buf2hexstr_ex() encodes the contents of the given I<buf> with
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length I<buflen> and places the resulting hexadecimal character string
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in the given I<str>.
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The character I<sep> is the separator between the bytes, setting this to '\0'
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means that there is no separator.
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I<str_n> gives the size of the of the string buffer.
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If I<strlen> 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 I<str>.
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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. It uses a
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default separator of ':'.
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The memory is allocated by calling OPENSSL_malloc() and should be
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released by calling OPENSSL_free().
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=head1 RETURN VALUES
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OPENSSL_hexchar2int returns the value of a decoded hex character,
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or -1 on error.
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OPENSSL_buf2hexstr() and OPENSSL_hexstr2buf()
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return a pointer to allocated memory, or NULL on error.
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OPENSSL_buf2hexstr_ex() and OPENSSL_hexstr2buf_ex() return 1 on
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success, or 0 on error.
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=head1 COPYRIGHT
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Copyright 2016-2019 The OpenSSL Project Authors. All Rights Reserved.
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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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L<https://www.openssl.org/source/license.html>.
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=cut
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