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

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


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

1	. #import <CommonCrypto/CommonDigest.h>

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

SHA1 -

-(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 - - (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 helps..!!!!!!!