I found this useful class for base64 encoding / decoding. It is written by Kiichi Takeuchi Base64.h @interface Base64 : NSObject { } + (void) initialize; + (NSString*) encode:(const uint8_t*) input length:(NSInteger) length; + (NSString*) encode:(NSData*) rawBytes; + (NSData*) decode:(const char*) string length:(NSInteger) inputLength; + (NSData*) decode:(NSString*) string; @end Sample…

This function will help you generate MD5 hash of a given string Class.h + (NSString *)getMD5FromString:(NSString *)source; Class.m + (NSString *)getMD5FromString:(NSString *)source{ const char *src = ; unsigned char result[CC_MD5_DIGEST_LENGTH]; CC_MD5(src, strlen(src), result); NSString *ret = [[[NSString alloc] initWithFormat:@”%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X”, result[0], result[1], result[2], result[3], result[4], result[5], result[6], result[7], result[8], result[9], result[10],…

This function will help you to convert hex color string to UIColor Class.h + (UIColor *) colorWithHexString: (NSString *) stringToConvert; Class.m + (UIColor *) colorWithHexString: (NSString *) stringToConvert{ NSString *cString = [[stringToConvert stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString]; // String should be 6 or 8 characters if ([cString length] < 6) return [UIColor...