iOS 中MD5和sha1加密

#import "CommonCrypto/CommonDigest.h"

-(NSString *)getSha1String

{

NSData *data = [self dataUsingEncoding:NSUTF8StringEncoding];

uint8_t digest[CC_SHA1_DIGEST_LENGTH];

CC_SHA1(data.bytes, data.length, digest);

NSMutableString* result = [NSMutableString stringWithCapacity:CC_SHA1_DIGEST_LENGTH *2];

for(int i =0; i < CC_SHA1_DIGEST_LENGTH; i++) {

[result appendFormat:@"%02x", digest[i]];

}

return result;

}

-(NSString *)getMd5String

{

const char *cStr = [self UTF8String];

unsigned char result[CC_MD5_DIGEST_LENGTH];

CC_MD5(cStr, strlen(cStr), result);

return [[NSString stringWithFormat:@"%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], result[11],

result[12], result[13], result[14], result[15]

] lowercaseString];

}