6f6e9b9d3b4bfee48d3874df10d7cc854d05bfc5
<tr><td>2025-10-28 15:23</td><td><a href="commit/6f6e9b9d3b4bfee48d3874df10d7cc854d05bfc5.html">challenge 27: recover the key from cbc with iv=key</a></td><td>Jack Sangdahl</td><td class="num" align="right">1</td><td class="num" align="right">+66</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-27 15:57</td><td><a href="commit/5ba2137db9ed643b499a3ce25b56ca55398a1467.html">challenge 26: ctr bitflipping</a></td><td>Jack Sangdahl</td><td class="num" align="right">1</td><td class="num" align="right">+58</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-26 03:42</td><td><a href="commit/3601db73f0e355cb6e74720aadeedbd19d1acfee.html">challenge 25: break random access read/write aes ctr</a></td><td>Jack Sangdahl</td><td class="num" align="right">2</td><td class="num" align="right">+126</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-26 03:08</td><td><a href="commit/b7c3a969c06037f3f56be3ff125723e89d8a5ece.html">challenge 24: create the mt19937 stream cipher and break it</a></td><td>Jack Sangdahl</td><td class="num" align="right">1</td><td class="num" align="right">+70</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-26 03:07</td><td><a href="commit/6faa2cffc1514f62f81440c66fe177b47304e17e.html">challenge 23: clone an mt19937 rng from its output</a></td><td>Jack Sangdahl</td><td class="num" align="right">1</td><td class="num" align="right">+45</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-24 04:39</td><td><a href="commit/d51c2413fea0bc38bcf09fef04101aa58a2b6d7a.html">challenge 22: crack an mt19937 seed</a></td><td>Jack Sangdahl</td><td class="num" align="right">1</td><td class="num" align="right">+47</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-24 02:49</td><td><a href="commit/245c17d8ba7951a8feab3a43604a39169d2e1a69.html">chore: Add symlink for challenge 19 -&gt; 20</a></td><td>Jack Sangdahl</td><td class="num" align="right">1</td><td class="num" align="right">+2</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-23 17:04</td><td><a href="commit/4dda41b3c51551872d4c650f6fcf55859c1abe9c.html">challenge 21: implement the mt19937 mersenne twister rng</a></td><td>Jack Sangdahl</td><td class="num" align="right">3</td><td class="num" align="right">+115</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-23 15:07</td><td><a href="commit/bf02706fd5fb6adea3f1c66d7fc798888d9d8cbb.html">challenge 20: break fixed-nonce ctr statistically</a></td><td>Jack Sangdahl</td><td class="num" align="right">2</td><td class="num" align="right">+135</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-19 13:55</td><td><a href="commit/93665072a4f6f4fd829920648080236e124e4328.html">chore: Adding missing header on Linux systems</a></td><td>Jack Sangdahl</td><td class="num" align="right">1</td><td class="num" align="right">+1</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-19 03:13</td><td><a href="commit/ca427481a713d09da50b0b69df82bd927031c6ed.html">challenge 18: implement ctr, the stream cipher mode</a></td><td>Jack Sangdahl</td><td class="num" align="right">3</td><td class="num" align="right">+120</td><td class="num" align="right">-8</td></tr>
<tr><td>2025-10-17 14:45</td><td><a href="commit/eace2b19a5f0ef8349783ae9a40aaa05c0638674.html">challenge 17: the cbc padding oracle</a></td><td>Jack Sangdahl</td><td class="num" align="right">2</td><td class="num" align="right">+111</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-15 15:00</td><td><a href="commit/bc70e11286a48ba9efbf259c1a00ad98c076412e.html">challenge 16: cbc bitflipping attacks</a></td><td>Jack Sangdahl</td><td class="num" align="right">1</td><td class="num" align="right">+76</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-14 15:24</td><td><a href="commit/1b2b4397beceb8fab31dcaaae7f5340d77e95034.html">challenge 15: pkcs#7 padding validation</a></td><td>Jack Sangdahl</td><td class="num" align="right">1</td><td class="num" align="right">+34</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-14 15:12</td><td><a href="commit/2bc60b7d2f6c303799d76aedb948bb547f491c3e.html">challenge 14: byte-at-a-time ecb decryption (hard)</a></td><td>Jack Sangdahl</td><td class="num" align="right">1</td><td class="num" align="right">+106</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-14 03:52</td><td><a href="commit/58d7943c0d6b6b425b0c1bc2b5f3a4d81087dbf8.html">challenge 13: ecb cut-and-paste</a></td><td>Jack Sangdahl</td><td class="num" align="right">2</td><td class="num" align="right">+152</td><td class="num" align="right">-1</td></tr>
<tr><td>2025-10-13 18:36</td><td><a href="commit/4c3995a8afb34136ab3e1bc02647f3d8e3824638.html">challenge 12: byte-at-a-time ecb decryption (simple)</a></td><td>Jack Sangdahl</td><td class="num" align="right">2</td><td class="num" align="right">+109</td><td class="num" align="right">-3</td></tr>
<tr><td>2025-10-08 16:48</td><td><a href="commit/452884f6a66f51ad48d04b8c7a2e94a57643651b.html">challenge 11: an ecb/cbc detection oracle</a></td><td>Jack Sangdahl</td><td class="num" align="right">5</td><td class="num" align="right">+97</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-08 15:08</td><td><a href="commit/419e41293a37b19d53da3dd4fd7a37bdce5566cb.html">challenge 10: implement cbc mode</a></td><td>Jack Sangdahl</td><td class="num" align="right">6</td><td class="num" align="right">+223</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-08 04:13</td><td><a href="commit/8bdc32650426b580fc9972834fa2e3dd067fbe1e.html">challenge 9: implement pkcs#7 padding</a></td><td>Jack Sangdahl</td><td class="num" align="right">1</td><td class="num" align="right">+23</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-07 04:26</td><td><a href="commit/16c34670eeb091fb40430b3a87b4a0c0b1ffdb99.html">challenge 8: detect aes in ecb mode</a></td><td>Jack Sangdahl</td><td class="num" align="right">2</td><td class="num" align="right">+245</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-07 04:13</td><td><a href="commit/d92949e14513c6bca0364492540bc9e22ba186da.html">chore: Migrate ECB encryption to openssl 3.0 API</a></td><td>Jack Sangdahl</td><td class="num" align="right">2</td><td class="num" align="right">+85</td><td class="num" align="right">-17</td></tr>
<tr><td>2025-10-06 20:03</td><td><a href="commit/c41dcb673c914e2d755cf53624926a9093477feb.html">challenge 7: aes in ecb mode</a></td><td>Jack Sangdahl</td><td class="num" align="right">5</td><td class="num" align="right">+184</td><td class="num" align="right">-2</td></tr>
<tr><td>2025-10-05 02:54</td><td><a href="commit/406aa4552a412082f67d3eb20a165c31fa4474d5.html">challenge 6: break repeating key xor</a></td><td>Jack Sangdahl</td><td class="num" align="right">6</td><td class="num" align="right">+191</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-05 02:03</td><td><a href="commit/3912bee57a60f9c2cea400325f5e129dae621fab.html">challenge 5: implement repeating key xor</a></td><td>Jack Sangdahl</td><td class="num" align="right">1</td><td class="num" align="right">+45</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-10-05 01:47</td><td><a href="commit/bdd46ff96d02167e197596336bf8c7b061f4458e.html">challenge 4: detect single-character xor</a></td><td>Jack Sangdahl</td><td class="num" align="right">3</td><td class="num" align="right">+385</td><td class="num" align="right">-7</td></tr>
<tr><td>2025-09-29 16:19</td><td><a href="commit/30d2d1e5ed349664692276dcc538d85d35e30817.html">challenge 3: single-byte xor cipher</a></td><td>Jack Sangdahl</td><td class="num" align="right">3</td><td class="num" align="right">+88</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-09-29 15:53</td><td><a href="commit/03dd3fff2cc0dc99e3e1483b0da90134fe91d391.html">challenge 2: fixed xor</a></td><td>Jack Sangdahl</td><td class="num" align="right">3</td><td class="num" align="right">+121</td><td class="num" align="right">-0</td></tr>
<tr><td>2025-09-29 15:24</td><td><a href="commit/40037995c712bf6989e25d68354f45bf22d1173d.html">challenge 1: convert hex to base64</a></td><td>Jack Sangdahl</td><td class="num" align="right">7</td><td class="num" align="right">+199</td><td class="num" align="right">-0</td></tr>