2021 PBCTF writeup
| Name | Category | Points | Solves |
|---|---|---|---|
| Alkaloid Stream | CRYPTO | 134 / 500 | 132 |
I found a weird stream cipher scheme. Can you break this?
See attachments.
See solutions.
| Name | Category | Points | Solves |
|---|---|---|---|
| Steroid Stream | CRYPTO | 198 / 500 | 38 |
I found a weird stream cipher scheme. Can you break this?
See attachments.
See solutions.
| Name | Category | Points | Solves |
|---|---|---|---|
| GoodHash | CRYPTO | 218 / 500 | 30 |
I think I made a good hash function based on AES. Could you test this?
nc good-hash.chal.perfect.blue 1337
See attachments.
See solutions.
| Name | Category | Points | Solves |
|---|---|---|---|
| Yet Another PRNG | CRYPTO | 292 / 500 | 14 |
See attachments.
See solutions.
| Name | Category | Points | Solves |
|---|---|---|---|
| Yet Another RSA | CRYPTO | 309 / 500 | 12 |
See attachments.
See solutions.
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