sir,i want to convert string into a hexadecimal value...is there any direct command?

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satya
satya 2014-3-20
评论： satya 2014-4-8
sir,i want to convert string into a hexadecimal value...is there any direct command?suppose my string is abc.i want that abc in the hexadecimal value.plz help me sir
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Patrik Ek
Patrik Ek 2014-4-2
You have it already. Just notice that concate is a variable and must be treated as such and not as 'concate' which is a string with value 'concate' and not the variable concate. also remove the 8 in dec2str the input is given as an array of hexadecimal strings, which only is 2 digit each.
However, walter roberson give a nice code that can replace
decString = unicode2native('hi','utf-8');
hexString = dec2hex(decString);
If you want the hexadecimal code as a row vector, instead of a 2xN columnvector. Your choice. Both have pros and cons.
satya
satya 2014-4-8
siy,By using 'uint8' command...i got my answer...this will convert the string into integer value..we can convert the decimal value to hex by using dec2hex command...
decstring=uint8(concate)
hexstring = dec2hex(decstring)
check this code....thanku for ur reply..

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采纳的回答

Patrik Ek
Patrik Ek 2014-3-21
编辑：Patrik Ek 2014-3-21
Have you tried unicode2native ?
decString = unicode2native('hi','utf-8');
hexString = dec2hex(decString);
You can really select another encoding if you would like and the hexString vector may need to be modified a bit. Otherwise this should work fine. Please comment if this does not solve your problem. If you want the return vector in some special way, then add the wanted output to the question.
Good luck!

更多回答（3 个）

Walter Roberson
Walter Roberson 2014-4-1
hexstring = sprintf('%02x', YourString')
Note that if characters beyond 255 are present then you need to take other steps such as using UTF-8 encoding as Patrik suggested.
Mischa Kim
Mischa Kim 2014-3-20
编辑：Mischa Kim 2014-3-20
Satya, hex values are interpreted as strings, so no need for a transformation. E.g.
a = hex2dec('abc') % converting hex number to decimal
a =
2748
or
a = hex2dec('f')
a =
15
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satya
satya 2014-3-21
sir,Actually i am designing a SHA-512 hash algorithm.according to my application the user have to give input i.e..,some string or value..and that string must be converted to HEX value for further computations.As i am new to matlab...i am not aware of basics...
Mischa Kim
Mischa Kim 2014-3-21
OK. There is only limited built-in functionality to deal with hex numbers. So typically, you would read and store hexadecimals as strings. For any kind of hex manipulations you'd have to convert to a different number format (decimals, most likely). You might find some useful code in the File Exchange .

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Jos (10584)
Jos (10584) 2014-3-21
Do you want to convert the string to a value?
STR = input('Enter a hexadecimal number:','s')
% the user types, for instance, 1F
value = hex2dec(STR)
% or
value2 = sscanf('1F','%x')
% both gives 31
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satya
satya 2014-3-21
sir,For the code u have given,user have to give their input in hexadecimal value,but my input is string.that may be a name of a person..

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