#include <CommonCrypto/CommonDigest.h>

 

@implementation YourClass

 

-(NSString*)getExecutableFileMD5Signature{

NSBundle *bundle = [NSBundle mainBundle];

    NSDictionary *info = [bundle infoDictionary];

NSString *execName = [info objectForKey:@"CFBundleExecutable"];

NSData *data = [NSData dataWithContentsOfFile:[NSString stringWithFormat:@"%@/%@.app/%@", NSHomeDirectory(), execName, execName]];

return [self cHash:@"md5" data:data];

}

 

-(NSString*)cHash:(NSString*)algo data:(NSData*)data{

NSData *rdata;

if ([algo isEqualToString:@"sha1"]) {

unsigned char hashBytes[CC_SHA1_DIGEST_LENGTH];

CC_SHA1([data bytes], [data length], hashBytes);

rdata = [NSData dataWithBytes:hashBytes length:CC_SHA1_DIGEST_LENGTH];

}else if ([algo isEqualToString:@"md5" ]) {

unsigned char hashBytes[CC_MD5_DIGEST_LENGTH];

CC_MD5([data bytes], [data length], hashBytes);

rdata = [NSData dataWithBytes:hashBytes length:CC_MD5_DIGEST_LENGTH];

} else {

return @"NULL";

}

return [rdata stringWithHexBytes];

}

 

@end

 

 

//add new method to NSData Class

//convert NSData to HEX NSString

@implementation NSData (NSDataStrings)

 

- (NSString*)stringWithHexBytes {

static const char hexdigits[] = "0123456789abcdef";

const size_t numBytes = [self length];

const unsigned char* bytes = [self bytes];

char *strbuf = (char *)malloc(numBytes * 2 + 1);

char *hex = strbuf;

NSString *hexBytes = nil;

for (int i = 0; i<numBytes; ++i){

const unsigned char c = *bytes++;

*hex++ = hexdigits[(c >> 4) & 0xF];

*hex++ = hexdigits[(c ) & 0xF];

}

*hex = 0;

hexBytes = [NSString stringWithUTF8String:strbuf];

free(strbuf);

return hexBytes;

}

 

@end