diff options
| -rw-r--r-- | challenge/c04.go | 63 |
1 files changed, 35 insertions, 28 deletions
diff --git a/challenge/c04.go b/challenge/c04.go index e075133..028a0f8 100644 --- a/challenge/c04.go +++ b/challenge/c04.go @@ -8,6 +8,41 @@ import ( "ricketyspace.net/cryptopals/lib" ) +func C4() { + i, k, ds, scr := 0, byte(0), "", 100.0 + for j := 0; j < len(blobs); j++ { + c, as, s := lib.XORCrackSingleKey(blobs[j]) + if s < scr { + i = j + k = c + ds = as + scr = s + } + } + fmt.Printf("Blob encrypted with a single character: %v\n", blobs[i]) + fmt.Printf("Key is '%c'\n", k) + fmt.Printf("Decrypted string: '%v' (Score: %v)\n", ds, scr) +} + +// Output: +// +// Blob encrypted with a single character: 7b5a4215415d544115415d5015455447414c155c46155f4058455c5b523f +// Key is '5' +// Decrypted string: 'Now that the party is jumping +// ' (Score: 0.05999999999999994) + +func init() { + for i, j := 1, 0; i < len(blob); i++ { + if blob[i] == '\n' { + j += 1 + i += 1 + } + blobs[j] += string(blob[i]) + } +} + +var blobs = make([]string, 327) + const blob = ` 0e3647e8592d35514a081243582536ed3de6734059001e3f535ce6271032 334b041de124f73c18011a50e608097ac308ecee501337ec3e100854201d @@ -336,31 +371,3 @@ e03555453d1e31775f37331823164c341c09e310463438481019fb0b12fa 41053f5cef5f6f56e4f5410a5407281600200b2649460a2e3a3c38492a0c 4c071a57e9356ee415103c5c53e254063f2019340969e30a2e381d5b2555 32042f46431d2c44607934ed180c1028136a5f2b26092e3b2c4e2930585a` - -var blobs = make([]string, 327) - -func init() { - for i, j := 1, 0; i < len(blob); i++ { - if blob[i] == '\n' { - j += 1 - i += 1 - } - blobs[j] += string(blob[i]) - } -} - -func C4() { - i, k, ds, scr := 0, byte(0), "", 100.0 - for j := 0; j < len(blobs); j++ { - c, as, s := lib.XORCrackSingleKey(blobs[j]) - if s < scr { - i = j - k = c - ds = as - scr = s - } - } - fmt.Printf("Blob encrypted with a single character: %v\n", blobs[i]) - fmt.Printf("Key is '%c'\n", k) - fmt.Printf("Decrypted string: '%v' (Score: %v)\n", ds, scr) -} |