In this lab, you crack a stream cipher. The following is a sentence encrypted with a mono alphabetic substitution cipher. Your task is to decrypt it. Take some time to examine the cipher text. Make notes of your findings. 54:68:69:73:20:69:73:20:6e:6f:74:20:61:20:73:65:63:75:72:65:20:60:65:73:73: 61:67:65:20:62:65:63:61:75:73:65:20:62:6f:74:68:20:68:65:78:61:64:65:63:69: 60:61:6c:20:61:6e:64:20:41:53:43:49:49:20:61:72:65:20:77:65:6c:6e:20:6b: 6e:6f:77:6e:20:63:68:61:72:61:63:74:65:72:20:73:65:74:73:20:61:6e:64:20: 74:68:65:72:65:20:61:72:65:20:61:75:74:6f:60:61:74:69:63:20:63:6f:6e:76:65:72:74:65: 72:73:20:6f:6e:6c:69:6e:65:2e