This is my implementation of the Rijndael Algorithm (AES) in Go. It can encrypt and decrypt strings (yeah).

It was implemented using this spec: https://nvlpubs.nist.gov/nistpubs/fips/nist.fips.197.pdf

It uses github.com/urfave/cli as command line application framework.

./go-aes encrypt 1234567887654321 "hello world"

Ciphertext (HEX): f33e4af222e89f54df51315093bd1168

Do not forget to set the -hex flag when decrypting hex values

• ./go-aes -hex decrypt 1234567887654321 f33e4af222e89f54df51315093bd1168

Plaintext: hello world

It is also possible to set the key length, but it must be devidable by 32:

• ./go-aes -klength 192 encrypt 111111112222222233333333 "hello world"
• ./go-aes -klength 32 encrypt 1234 "hello world"
• ./go-aes -klength 64 encrypt 12341234 "hello world"

You can also set the number of encryption rounds

• ./go-aes -klength 64 -rounds 17 encrypt 12345678 McMurphey

Ciphertext (HEX): be3392467b39e2f825e6b8fb6403304a

Make sure to set the same number of rounds when decrypting

• ./go-aes -klength 64 -rounds 17 -hex decrypt 12345678 be3392467b39e2f825e6b8fb6403304a

Plaintext: McMurphey