https://github.com/arnaud-robin/aead-chacha20-poly1305
Implementation of AEAD_CHACHA20_POLY1305 in c++
https://github.com/arnaud-robin/aead-chacha20-poly1305
aead chacha20-poly1305 cpp cryptography
Last synced: 6 months ago
JSON representation
Implementation of AEAD_CHACHA20_POLY1305 in c++
- Host: GitHub
- URL: https://github.com/arnaud-robin/aead-chacha20-poly1305
- Owner: arnaud-robin
- License: gpl-3.0
- Created: 2020-03-25T13:27:06.000Z (over 5 years ago)
- Default Branch: master
- Last Pushed: 2020-03-25T13:54:52.000Z (over 5 years ago)
- Last Synced: 2023-09-28T15:18:40.570Z (about 2 years ago)
- Topics: aead, chacha20-poly1305, cpp, cryptography
- Language: C++
- Homepage:
- Size: 19.5 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: Readme.md
- License: LICENSE
Awesome Lists containing this project
README
# AEAD_CHACHA20_POLY1305
This is an implementation of AEAD_CHACHA20_POLY1305, following RFC8439 protocol. This project was made for a computer science course on cryptography, and should not be considered as secure. It was not designed to be robust against side-channel attacks.
## Installation
Run `make` command to build the files.
## Test and usage
You can launch the program using the following command:
```bash
./chacha20 yourkey.key < input
```
The key must be in the format :
```
constant:iv:key:aad
```
with values in hexadecimal. Constant should 32 bits in length, iv 64 bits, key 256 bits, and aad should be at most 2^64 -1 octets. An example from RFC8439 test vector is provided for extra clarity.
You can test the software using this command, and you should get the corresponding output:
```console
➜ ./chacha20 testvector.key < inputvector.txt
Cipher :
d3 1a 8d 34 64 8e 60 db 7b 86 af bc 53 ef 7e c2
a4 ad ed 51 29 6e 08 fe a9 e2 b5 a7 36 ee 62 d6
3d be a4 5e 8c a9 67 12 82 fa fb 69 da 92 72 8b
1a 71 de 0a 9e 06 0b 29 05 d6 a5 b6 7e cd 3b 36
92 dd bd 7f 2d 77 8b 8c 98 03 ae e3 28 09 1b 58
fa b3 24 e4 fa d6 75 94 55 85 80 8b 48 31 d7 bc
3f f4 de f0 8e 4b 7a 9d e5 76 d2 65 86 ce c6 4b
61 16
Tag :
1a e1 0b 59 4f 09 e2 6a 7e 90 2e cb d0 60 06 91
```