How do you hash a string to SHA512 in Swift?

hash a password string using SHA512 like C#

• I am developing logon function for my iPhone Application, so I want to hash the password using the SHA512 hashing algorithm then get the result as NSString (the result should be the same with SHA512 in C#). After spending a lot of time in the internet, I still not find out the solution yet! :( Is there anyone has the solution and sample code, please help me! Thanks a lot! [Update] In my C# code, the password is stored using SecureString, so maybe it's cause make different byte array between objective-c and C#

• Answer:

  This function will hash a string using SHA512. The resulting string is a hex representation of the hash: + (NSString *) createSHA512:(NSString *)source { const char *s = [source cStringUsingEncoding:NSASCIIStringEncoding]; NSData *keyData = [NSData dataWithBytes:s length:strlen(s)]; uint8_t digest[CC_SHA512_DIGEST_LENGTH] = {0}; CC_SHA512(keyData.bytes, keyData.length, digest); NSData *out = [NSData dataWithBytes:digest length:CC_SHA512_DIGEST_LENGTH]; return [out description]; } Don't forget to include the correct header: #include <CommonCrypto/CommonDigest.h>