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iOSSDK计算SHA1和MD5

How to get md5 and SHA1 in objective c (iOS sdk)

Calculating the md5 and sha1 hash in iOS sdk is pretty simple -

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Step 1 – The very first thing you need to do is import CommonCrypto’s CommonDigest.h


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#import


Step 2 – Here is the real code for calculating SHA1 and MD5 hash -

SHA1 -


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-(NSString*) sha1:(NSString*)input
{
 const char *cstr = [input cStringUsingEncoding:NSUTF8StringEncoding];
 NSData *data = [NSData dataWithBytes:cstr length:input.length];
  
 uint8_t digest[CC_SHA1_DIGEST_LENGTH];
  
 CC_SHA1(data.bytes, data.length, digest);
  
 NSMutableString* output = [NSMutableString stringWithCapacity:CC_SHA1_DIGEST_LENGTH * 2];
  
 for(int i = 0; i < CC_SHA1_DIGEST_LENGTH; i++)
 [output appendFormat:@"%02x", digest[i]];
  
 return output;
  
}

MD5 -

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- (NSString *) md5:(NSString *) input
{
 const char *cStr = [input UTF8String];
 unsigned char digest[16];
 CC_MD5( cStr, strlen(cStr), digest ); // This is the md5 call
  
 NSMutableString *output = [NSMutableString stringWithCapacity:CC_MD5_DIGEST_LENGTH * 2];
  
 for(int i = 0; i < CC_MD5_DIGEST_LENGTH; i++)
 [output appendFormat:@"%02x", digest[i]];
  
 return  output;
  
}


Hope it will help someone!!

via:
http://www.makebetterthings.com/ ... bjective-c-ios-sdk/

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