72 lines
2.5 KiB
Plaintext
72 lines
2.5 KiB
Plaintext
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These are "public" functions that can be used for supporting UTF-8 in your
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own formats for JtR. All are put in unicode.c.
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If you are not aware of UCS-2, just consider it a synonym to UTF-16. For our
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purposes, they are the same.
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Convert from ISO-8859-1 or UTF-8 to UTF-16LE:
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=============================================
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Source format depends on --utf8 flag given to john when running.
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If length is exceeded or malformed data is found, it will return a negative
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number telling you how much of the source that was read. That is, a return
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code of -32 means you have an UNKNOWN number of characters of UCS-2 [use
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strlen16()] in the destination buffer and you should truncate your
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"saved_plain" (if applicable) at 32.
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#include "unicode.h"
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int plaintowcs(UTF16 *dst, int maxdstlen, const UTF8 *src, int srclen);
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Convert UTF-8 to UTF-16LE:
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==========================
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Always from UTF-8. This is optimised for speed. If length is exceeded or
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malformed data is found, it will return a negative number telling you how much
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of the source that was read. That is, a return code of -32 means you have an
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UNKNOWN number of characters of UCS-2 [use strlen16()] in the destination
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buffer and you should truncate your "saved_plain" at 32.
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#include "unicode.h"
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int utf8towcs(UTF16 *target, int maxtargetlen,
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const UTF8 *source, int sourcelen);
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Convert UTF-16LE to UTF-8:
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==========================
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Currently used in NT_fmt.c in order to avoid using a saved_plain buffer.
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#include "unicode.h"
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extern char * utf16toutf8 (const UTF16* source);
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Return length (in characters) of a UTF16 string:
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================================================
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Number of octets is the result * sizeof(UTF16)
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#include "unicode.h"
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int strlen16(const UTF16 *str);
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Create an NT hash:
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==================
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This will convert from ISO-8859 or UTF-8 depending on the --utf8 option. The
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function will use Alain's fast NT hashing if length is <= 27 characters,
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otherwise it will use Solar's MD4. Lengths up to MAX_PLAINTEXT_LENGTH is thus
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supported with no hassle for you. If length is exceeded or malformed data is
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found, it will return a negative number telling you how much of the source
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that was read. That is, a return code of -32 means you should truncate your
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"saved_plain" at 32.
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#include "unicode.h"
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int E_md4hash(const UTF8 *passwd, int len, unsigned char *p16);
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NOTE that there are more functions available in ConvertUTF.c.original
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(ConvertUTF.h.original) and if we need any of them, we should copy them to
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unicode.c/h and simplify/optimize them.
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