https://github.com/mattnotmitt/cryptopals-go

Cryptopals solutions in Go
https://github.com/mattnotmitt/cryptopals-go

Last synced: 25 days ago
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Cryptopals solutions in Go

• Host: GitHub
• URL: https://github.com/mattnotmitt/cryptopals-go
• Owner: mattnotmitt
• License: isc
• Created: 2019-05-02T23:55:05.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2020-07-17T10:42:19.000Z (over 4 years ago)
• Last Synced: 2024-06-20T10:13:11.811Z (5 months ago)
• Language: Go
• Size: 125 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# CryptoPals Challenges - Go Edition

I've been meaning to complete [CryptoPals](https://cryptopals.com/) for years - I've recently found solace in [GoLang](https://golang.org/), so I'm teaching it to myself through the powers of cryptography.

As such, the syntax, use of functions and a million other things will not be up to what might come out of an experienced Go programmer, but this is just a learning experience for me :D

## Usage

Choose a set number `n`:

```sh

$ cd set{n}

$ go test -v

```

This will run through each of the challenges for that set, verifying the expected output to what my software generates.

## Progress

### [Set 1: Basics](http://cryptopals.com/sets/1)

  - [x] 01. Convert hex to base64

  - [x] 02. Fixed XOR

  - [x] 03. Single-byte XOR cipher

  - [x] 04. Detect single-character XOR

  - [x] 05. Implement repeating-key XOR

  - [x] 06. Break repeating-key XOR

  - [x] 07. AES in ECB mode

  - [x] 08. Detect AES in ECB mode

### [Set 2: Block Crypto](http://cryptopals.com/sets/2)

  - [x] 09. Implement PKCS#7 padding

  - [x] 10. Implement CBC mode

  - [x] 11. An ECB/CBC detection oracle

  - [x] 12. Byte-at-a-time ECB decryption (Simple)

  - [x] 13. ECB cut-and-paste

  - [x] 14. Byte-at-a-time ECB decryption (Harder)

  - [x] 15. PKCS#7 padding validation

  - [x] 16. CBC bitflipping attacks

### [Set 3: Block & Stream Crypto](http://cryptopals.com/sets/3)

  - [x] 17. The CBC padding oracle

  - [x] 18. Implement CTR, the stream cipher mode

  - [x] 19. Break fixed-nonce CTR mode using substitions

  - [x] 20. Break fixed-nonce CTR statistically

  - [ ] 21. Implement the MT19937 Mersenne Twister RNG

  - [ ] 22. Crack an MT19937 seed

  - [ ] 23. Clone an MT19937 RNG from its output

  - [ ] 24. Create the MT19937 stream cipher and break it

### [Set 4: Stream Crypto & Randomness](http://cryptopals.com/sets/4)

  - [ ] 25. Break "random access read/write" AES CTR

  - [ ] 26. CTR bitflipping

  - [ ] 27. Recover the key from CBC with IV=Key

  - [ ] 28. Implement a SHA-1 keyed MAC

  - [ ] 29. Break a SHA-1 keyed MAC using length extension

  - [ ] 30. Break an MD4 keyed MAC using length extension

  - [ ] 31. Implement and break HMAC-SHA1 with an artificial timing leak

  - [ ] 32. Break HMAC-SHA1 with a slightly less artificial timing leak

### [Set 5: Diffie-Hellman and Friends](http://cryptopals.com/sets/5)

  - [ ] 33. Implement Diffie-Hellman

  - [ ] 34. Implement a MITM key-fixing attack on Diffie-Hellman with parameter injection

  - [ ] 35. Implement DH with negotiated groups, and break with malicious "g" parameters

  - [ ] 36. Implement Secure Remote Password (SRP)

  - [ ] 37. Break SRP with a zero key

  - [ ] 38. Offline dictionary attack on simplified SRP

  - [ ] 39. Implement RSA

  - [ ] 40. Implement an E=3 RSA Broadcast attack

### [Set 6: RSA and DSA](http://cryptopals.com/sets/6)

  - [ ] 41. Implement unpadded message recovery oracle

  - [ ] 42. Bleichenbacher's e=3 RSA Attack

  - [ ] 43. DSA key recovery from nonce

  - [ ] 44. DSA nonce recovery from repeated nonce

  - [ ] 45. DSA parameter tampering

  - [ ] 46. RSA parity oracle

  - [ ] 47. Bleichenbacher's PKCS 1.5 Padding Oracle (Simple Case)

  - [ ] 48. Bleichenbacher's PKCS 1.5 Padding Oracle (Complete Case)