獲取MD5和SHA-1

Question

我正在尋找一些在我的iPhone應用程序中獲取MD5和SHA-1的幫助。 任何人都可以給我一個關於如何得到這些的想法嗎？

Answer 1

#include <CommonCrypto/CommonDigest.h> 

-(NSString*) sha1:(NSString*)input 
{ 

NSData *data = [input dataUsingEncoding: NSUTF8StringEncoding]; 

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; 

} 

- (NSString *) md5:(NSString *) input 
{ 
const char *cStr = [input UTF8String]; 
unsigned char digest[CC_MD5_DIGEST_LENGTH]; 
CC_MD5(cStr, (CC_LONG)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; 

} 

也看看我的博客文章在這裏 - http://www.makebetterthings.com/blogs/iphone/how-to-get-md5-and-sha1-in-objective-c-ios-sdk/