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crypto: crypto.aes CBC mode moves to crypto.cipher (#13084)

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688862 2022-01-08 23:08:46 +08:00 • committed by GitHub
parent b778c1d097
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6 changed files with 54 additions and 151 deletions
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27
vlib/crypto/aes/aes_test.v
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@ -3,25 +3,16 @@
// that can be found in the LICENSE file.
import crypto.aes
fn test_crypto_aes() {
// TEST CBC
fn test_aes() {
key := '6368616e676520746869732070617373'.bytes()
mut ciphertext := '73c86d43a9d700a253a96c85b0f6b03ac9792e0e757f869cca306bd3cba1c62b'.bytes()
block := aes.new_cipher(key)
// The IV needs to be unique, but not secure. Therefore it's common to
// include it at the beginning of the ciphertext.
if ciphertext.len < aes.block_size {
panic('ciphertext too short')
}
iv := ciphertext[..aes.block_size]
ciphertext = ciphertext[aes.block_size..]
// CBC mode always works in whole blocks.
if ciphertext.len % aes.block_size != 0 {
panic('ciphertext is not a multiple of the block size')
}
mode := aes.new_cbc(block, iv)
cipher_clone := ciphertext.clone()
mode.encrypt_blocks(mut ciphertext, cipher_clone)
assert ciphertext.hex() == 'c210459b514668ddc44674885e4979215265a6c44431a248421254ef357a8c2a308a8bddf5623af9df91737562041cf1'
println('ok')
block.encrypt(mut ciphertext, ciphertext.clone())
assert ciphertext.hex() == '05d1737fe0a7c12088ff4c94d62ccbd9353361393663383562306636623033616339373932653065373537663836396363613330366264336362613163363262'
block.decrypt(mut ciphertext, ciphertext.clone())
assert ciphertext.bytestr() == '73c86d43a9d700a253a96c85b0f6b03ac9792e0e757f869cca306bd3cba1c62b'
println('test_aes ok')
}