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  1. #import <objc/objc.h>
  2. #import <objc/Object.h>
  3. #import <Foundation/Foundation.h>
  4. #import <CommonCrypto/CommonCrypto.h>
  5.  
  6. @implementation TestObj
  7. int main()
  8. {
  9.  
  10. 	NSLog(@"%@",[self hmac:@"20100508" withKey: @"INBLUEwJalrXUtnFEMI/K7MDENG+bPxRfiCYEXAMPLEKEY"]);
  11. 	return 0;
  12. }
  13.  
  14.  
  15. - (NSString *)hmac:(NSString *)plaintext withKey:(NSString *)key
  16. {
  17.     const char *cKey  = [key cStringUsingEncoding:NSASCIIStringEncoding];
  18.     const char *cData = [plaintext cStringUsingEncoding:NSASCIIStringEncoding];
  19.     unsigned char cHMAC[CC_SHA256_DIGEST_LENGTH];
  20.     CCHmac(kCCHmacAlgSHA256, cKey, strlen(cKey), cData, strlen(cData), cHMAC);
  21.     NSData *HMACData = [NSData dataWithBytes:cHMAC length:sizeof(cHMAC)];
  22.     const unsigned char *buffer = (const unsigned char *)[HMACData bytes];
  23.     NSMutableString *HMAC = [NSMutableString stringWithCapacity:HMACData.length * 2];
  24.     for (int i = 0; i < HMACData.length; ++i){
  25.         [HMAC appendFormat:@"%02x", buffer[i]];
  26.     }
  27.  
  28.     return HMAC;
  29. }
  30. @end
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
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Standard input is empty
compilation info 
prog.m:4:38: fatal error: CommonCrypto/CommonCrypto.h: No such file or directory
 #import <CommonCrypto/CommonCrypto.h>
                                      ^
compilation terminated.
stdout
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Standard output is empty
https://ideone.com/PI82qM
language:
Objective-C (gcc 8.3)
created:
7 years ago
visibility:
public

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