KeyB Parameter (Protect-Data Cmdlet)
The secret key for the symmetric algorithm.
Syntax
Protect-Data -KeyB byte[]
Remarks
This secret key is used both for encryption and decryption. The secret key should be known only to the sender and the receiver. The legal key size varies depending on the algorithm.
If this parameter is left empty and KeyPassword is specified, a Key value will be generated by the cmdlet as necessary.
Legal Key and Block Sizes (in bits)
| AES | Rijndael | CAST | DES | IDEA | RC2 | RC4 | TripleDES | Blowfish | Twofish | TEA | |
| Minimum Key Size | 128 | 128 | 40 | 64 | 128 | 8 | 8 | 128 | 1 | 128 | 128 |
| Maximum Key Size | 256 | 256 | 128 | 64 | 128 | 128 | 2048 | 192 | 448 | 256 | 128 |
| Key Size Step | 64 | 64 | 8 | 0 | 0 | 8 | 8 | 64 | 1 | 8 | 0 |
| Block Size | 128 | 128/192/256 | 64 | 64 | 64 | 64 | N/A | 64 | 64 | 128 | 64* |
Note: When using TEA if Algorithm is set to XXTEA valid block sizes are 64 + n * 32. Where n is any positive integer.
The default KeySize is the Maximum Key Size. This parameter accept a byte array.
Default Value
null