CtrDrbg

A pure Elixir implementation of the CTR_DRBG PRNG algorithm.

Supported Functionality

• Ciphers
  • AES-128
  • AES-192
  • AES-256
  • Triple DES
• Personalization string
• Reseeding counter
• Prediction resistance
• Derivation function
• Security strength option

Installation

Add ctr_drbg to your list of dependencies in mix.exs:

def deps do
  [
    {:ctr_drbg, "~> 0.1.0"}
  ]
end

Docs can be found at https://hexdocs.pm/ctr_drbg.

Tests

The test vectors under text/fixtures were retrieved from the NIST's Cryptographic Algorithm Validation Program (drbgvectors_pr_false/CTR_DRBG.rsp in the drbgtestvectors.zip archive).

Benchmarks

$> mix benchmark

Generated ctr_drbg app
Operating System: macOS
CPU Information: Apple M1 Max
Number of Available Cores: 10
Available memory: 32 GB
Elixir 1.15.4
Erlang 26.0.2

Benchmark suite executing with the following configuration:
warmup: 2 s
time: 5 s
memory time: 0 ns
reduction time: 0 ns
parallel: 1
inputs: 16 bytes, 32 bytes, 64 bytes
Estimated total run time: 21 s

Benchmarking CtrDrbg.generate/2 with input 16 bytes ...
Benchmarking CtrDrbg.generate/2 with input 32 bytes ...
Benchmarking CtrDrbg.generate/2 with input 64 bytes ...

##### With input 16 bytes #####
Name                         ips        average  deviation         median         99th %
CtrDrbg.generate/2      427.59 K        2.34 μs  ±2044.84%        1.54 μs        3.58 μs

##### With input 32 bytes #####
Name                         ips        average  deviation         median         99th %
CtrDrbg.generate/2      401.58 K        2.49 μs   ±978.15%        1.92 μs        4.79 μs

##### With input 64 bytes #####
Name                         ips        average  deviation         median         99th %
CtrDrbg.generate/2      278.11 K        3.60 μs   ±558.63%        2.83 μs        7.25 μs