Decryption not working on IOS 13

[ahsanghauri]

decryption work fine pervious version but not working on IOS 13.please help

[janibekm]

mytext: 1234 crypto: LXY1ElqyWvsPV+YaRf6FdoY3GNUbijO4bKUwlcJTmuA= decrypt: cannot decrypt key: mykey cannot decrypting , in ios13, xcode 11, macos catalina, Please help.

[mrazam110]

same issue

[Zeeshan03422]

same issue decryption not working on IOS 13

[skavinvarnan]

Will look into it

[squshipillow]

I am having the same problem just started to debug. It is not refreshing the encryption on login. I will let you know if I find anything out

[squshipillow]

I have partially gone through apples code and have not seen any major changes to the lib as of yet. I did change a little code in order to get a new encrypted password each time, which wasn't working properly. My server has been throwing Errors only on Xcode 11 builds so it is clearly something in Xcode11.

[ghost]

The sha256 for the same key on iOS12 and iOS13 are different, the problem could be somewhere there. The return value for CryptLib().sha256("placeholderKey", length: 32) is

• iOS13 0x8cce86e407960

• iOS12 0x8cce86e407960550edf12b4ebbc16cb7

[felipembassi]

@skavinvarnan @Farcvel @squshipillow @ahsankhatri

Inside: - (NSString*) sha256:(NSString *)key length:(NSInteger) length

I replaced NSString *hash=[out description]; To NSString *hash=[out debugDescription];

And everything got back to normal

31

[squshipillow]

worked for me, awesome!

[ahsanghauri]

@skavinvarnan @Farcvel @squshipillow @ahsankhatri

Inside: - (NSString*) sha256:(NSString *)key length:(NSInteger) length

I replaced NSString *hash=[out description]; To NSString *hash=[out debugDescription];

And everything got back to normal

31

thanks man work fine now

[dm-manu]

@skavinvarnan @ahsankhatri

I have found another issue with the decryption method -decryptCipherText: key : iv:

`- (NSString ) decryptCipherText:(NSString )ciperText key:(NSString )key iv:(NSString )iv {

return [[NSString alloc] initWithData:[[CryptLib alloc] decrypt:[[NSData alloc] initWithBase64EncodedString:ciperText options:NSDataBase64DecodingIgnoreUnknownCharacters] key:[[CryptLib alloc] sha256:key length:32] iv:[[CryptLib alloc] generateRandomIV16]] encoding:NSUTF8StringEncoding];

}

Please see that the above method does not use the given argument for iv and it generates a random IV instead. This will also results invalid result while decrypting data. Please look into this and kindly change accordingly.

Thanks in advance.

[senthilhisto]

Refer below link. https://stackoverflow.com/questions/58098958/aes-encryption-cryptlib-in-ios-13-not-working You can use for nsdata to hex conversion below

pragma mark - String Conversion

-(NSString)hex:(NSData)data{ NSMutableData result = [NSMutableData dataWithLength:2data.length]; unsigned const char src = data.bytes; unsigned char dst = result.mutableBytes; unsigned char t0, t1;

 for (int i = 0; i < data.length; i ++ ) {
      t0 = src[i] >> 4;
      t1 = src[i] & 0x0F;

      dst[i*2] = 48 + t0 + (t0 / 10) * 39;
      dst[i*2+1] = 48 + t1 + (t1 / 10) * 39;
 }

 return [[NSString alloc] initWithData:result encoding:NSASCIIStringEncoding];

}

[octalanil1]

• (NSString ) decryptCipherTextRandomIVWithCipherText:(NSString )cipherText key:(NSString *)key; is not working properly in iOS13

[KamilFaheem-1994]

debugDescription

Work for me (thanks)

[devendrayadav9]

@skavinvarnan @Farcvel @squshipillow @ahsankhatri Inside: - (NSString*) sha256:(NSString *)key length:(NSInteger) length I replaced NSString *hash=[out description]; To NSString *hash=[out debugDescription]; And everything got back to normal

31

thanks you man work fine now

`NSString *hash=[out debugDescription];

[devendrayadav9]

Inside:

• (NSString) sha256:(NSString )key length:(NSInteger) length I replaced NSString hash=[out description]; To NSString hash=[out debugDescription]; And everything got back to normal