RIPEMD160 hash in C language

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I want to code a c program to perform ripemd160 hash on a char array. But I cannot figure out how could I do it. Can anyone suggest a c code to do the following?

What I have tried:

I came across this function in OpenSSL but I cannot figureout how to use it

unsigned char *RIPEMD160(const unsigned char *d, unsigned long n, unsigned char *md);

Posted 19-Mar-20 23:15pm

Asish6542165

Updated 19-Mar-20 23:26pm

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CPallini · Accepted Answer · 2020-03-19T23:27:00

Solution 2

What about The Documentation[^]?

Looks you are unfamiliar with the documentese (you should fix that as soon as possible).

try

C

const char mystr = "My Beautiful String"; // first parameter is the input string
unsigned long len = strlen( mystr ); // 2nd parameter is the length of the input string
unsigned char myhash[20]; // 3rd parameter is the (output) hash array
RIPEMD160( (const unsigned char *)mystr, len, myhash);

Posted 19-Mar-20 23:27pm

CPallini

Updated 19-Mar-20 23:49pm

v2

Comments

Asish6542165 20-Mar-20 5:29am

can you explain to me the parameters of this function

" unsigned char *RIPEMD160(const unsigned char *d, unsigned long n,
unsigned char *md);"

CPallini 20-Mar-20 5:48am

See my updated solution.

OriginalGriff · Accepted Answer · 2020-03-19T23:25:00

Solution 1

Have you considered reading the documentation: /docs/man1.0.2/man3/RIPEMD160.html[^] at all?

Posted 19-Mar-20 23:25pm

OriginalGriff

Comments

CPallini 20-Mar-20 5:26am

Damn! :-D

Asish6542165 20-Mar-20 5:27am

what does the 'unsigned long n' do in it.

phil.o 20-Mar-20 5:31am

RIPEMD160() computes the RIPEMD-160 message digest of the n bytes at d and places it in md (which must have space for RIPEMD160_DIGEST_LENGTH == 20 bytes of output). If md is NULL, the digest is placed in a static array.

OriginalGriff 20-Mar-20 5:39am

Reading documentation is clearly not a strong suite here ... :sigh:

Richard MacCutchan 20-Mar-20 6:43am

Trebor make strong suites. :)

OriginalGriff 20-Mar-20 6:51am

Extra strong, sometimes!