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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1	`#import`

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

SHA1 -

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01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17	`-(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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01 02 03 04 05 06 07 08 09 10 11 12 13 14	`- (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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