sodium.cr/spec/sodium/cipher/aead/chalsa_spec.cr

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require "../../../spec_helper"
require "../../../../src/sodium/cipher/aead/chalsa"
combined_test_vectors = [
{
key: "1b27556473e985d462cd51197a9a46c76009549eac6474f206c4ee0844f68389",
nonce: "69696ee955b62b73cd62bda875fc73d68219e0036b7a0b37",
plaintext: "be075fc53c81f2d5cf141316ebeb0c7b5228c52a4c62cbd44b66849b64244ffce5e" \
"cbaaf33bd751a1ac728d45e6c61296cdc3c01233561f41db66cce314adb310e3be8" \
"250c46f06dceea3a7fa1348057e2f6556ad6b1318a024a838f21af1fde048977eb4" \
"8f59ffd4924ca1c60902e52f0a089bc76897040e082f937763848645e0705",
ciphertext: "f3ffc7703f9400e52a7dfb4b3d3305d98e993b9f48681273c29650ba32fc76ce483" \
"32ea7164d96a4476fb8c531a1186ac0dfc17c98dce87b4da7f011ec48c97271d2c2" \
"0f9b928fe2270d6fb863d51738b48eeee314a7cc8ab932164548e526ae902243685" \
"17acfeabd6bb3732bc0e9da99832b61ca01b6de56244a9e88d5f9b37973f622a43d" \
"14a6599b1f654cb45a74e355a5",
},
]
private def box_from_test_vector(vec)
box = Sodium::SecretBox.new vec[:key].hexbytes
nonce = Sodium::Nonce.new vec[:nonce].hexbytes
plaintext = vec[:plaintext].hexbytes
ciphertext = vec[:ciphertext].hexbytes
{box, nonce, plaintext, ciphertext}
end
{% for name in %w(XChaCha20Poly1305Ietf) %}
# TODO: verify against test vectors.
describe Sodium::Cipher::Aead::{{ name.id }} do
it "encrypts/decrypts in combined mode" do
box = Sodium::Cipher::Aead::{{ name.id }}.new
message = "foo"
additional = "bar"
encrypted, nonce = box.encrypt message, additional: additional
decrypted = box.decrypt_string encrypted, nonce: nonce, additional: additional
decrypted.should eq message
# Wrong additional.
expect_raises(Sodium::Error::DecryptionFailed) do
box.decrypt encrypted, nonce: nonce, additional: "baz".to_slice
end
# Missing additional.
expect_raises(Sodium::Error::DecryptionFailed) do
box.decrypt encrypted, nonce: nonce
end
# Wrong data.
expect_raises(Sodium::Error::DecryptionFailed) do
box.decrypt "badmsgbadmsgbadmsgbadmsgbadmsg".to_slice, nonce: nonce
end
end
it "encrypts/decrypts in detached mode" do
box = Sodium::Cipher::Aead::{{ name.id }}.new
message = "foo"
additional = "bar"
mac, encrypted, nonce = box.encrypt_detached message, additional: additional
decrypted = box.decrypt_detached_string encrypted, nonce: nonce, mac: mac, additional: additional
decrypted.should eq message
# Wrong additional.
expect_raises(Sodium::Error::DecryptionFailed) do
box.decrypt_detached encrypted, nonce: nonce, mac: mac, additional: "baz".to_slice
end
# Missing additional.
expect_raises(Sodium::Error::DecryptionFailed) do
box.decrypt_detached encrypted, nonce: nonce, mac: mac
end
# Wrong data.
expect_raises(Sodium::Error::DecryptionFailed) do
box.decrypt_detached "badmsgbadmsgbadmsgbadmsgbadmsg".to_slice, nonce: nonce, mac: mac
end
end
it "can't encrypt twice using the same nonce" do
box = Sodium::Cipher::Aead::{{ name.id }}.new
message = "foo"
mac, encrypted, nonce = box.encrypt_detached message
expect_raises(Sodium::Nonce::Error::Reused) do
box.encrypt_detached message.to_slice, nonce: nonce
end
end
end
{% end %}
{% if false %}
describe Sodium::Cipher::Aead do
it "PyNaCl combined test vectors" do
combined_test_vectors.each do |vec|
box, nonce, plaintext, ciphertext = box_from_test_vector vec
encrypted, _ = box.encrypt plaintext, nonce: nonce
encrypted.should eq ciphertext
decrypted = box.decrypt encrypted, nonce: nonce
plaintext.should eq decrypted
end
end
pending "detached test vectors" do
detached_test_vectors.each do |vec|
box, nonce, plaintext, ciphertext = box_from_test_vector vec
encrypted = box.encrypt_detached plaintext, nonce
encrypted.should eq ciphertext
decrypted = box.decrypt_detached encrypted, nonce
plaintext.should eq decrypted
end
end
end
{% end %}