For convenient testing of very short text sequences using zx8 (ps) I
have uploaded a simple Python script at

http://www.freecx.co.uk/zx8/Python_Tests_STDIN/

Just place zx8_ps__STDIN.py and zx8_ps_algorithm.py into the same
folder, then execute for example



echo "Protected Privacy" | python ./zx8_ps__STDIN.py "SecretKeyWord"



which will print this result

Keyword    = SecretKeyWord
  (hex)    = 53:65:63:72:65:74:4B:65:79:57:6F:72:64

Plaintext  = 50:72:6F:74:65:63:74:65:64:20:50:72:69:76:61:63:79:0A
Keystream  = 62:F9:D4:31:2F:63:CC:08:E1:6F:22:C6:0F:68:EB:F2:1B:62
Ciphertext = 32:8B:BB:45:4A:00:B8:6D:85:4F:72:B4:66:1E:8A:91:62:68