Possibly Incorrect Key Size for AES Encryption?

[James Addyman]

Arcane/Sources/AES.swift

Lines 48 to 59 in 44c3013

 let hashKeyData = hashData.subdata(in: 0..<32) 
 let ivData = hashData.subdata(in: 32..<48) 
  
 let operation = encrypting ? kCCEncrypt : kCCDecrypt 
 var dataOutMovedLength: size_t = 0 
  
 let status = CCCrypt( 
   CCOperation(operation), 
   CCAlgorithm(kCCAlgorithmAES128), 
   CCOptions(kCCOptionPKCS7Padding), 
   (hashKeyData as NSData).bytes, 
   kCCKeySizeAES128, 

I'm by no means an expert, and I'm quite likely wrong, but when looking at the code linked above, it would appear to me that a 128-bit key size is incorrect when you specify a 32 Byte (256-bit) key data.

Is there perhaps something I'm not understanding?

[Khoa]

@james-rantmedia Let's discuss over PR 😉