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28 lines
1.0 KiB
Go
28 lines
1.0 KiB
Go
// Copyright (c) 2019 Alexander Medvednikov. All rights reserved.
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// Use of this source code is governed by an MIT license
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// that can be found in the LICENSE file.
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import crypto.aes
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fn test_crypto_aes() {
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// TEST CBC
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key := '6368616e676520746869732070617373'.bytes()
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mut ciphertext := '73c86d43a9d700a253a96c85b0f6b03ac9792e0e757f869cca306bd3cba1c62b'.bytes()
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block := aes.new_cipher(key)
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// The IV needs to be unique, but not secure. Therefore it's common to
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// include it at the beginning of the ciphertext.
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if ciphertext.len < aes.BlockSize {
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panic('ciphertext too short')
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}
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iv := ciphertext.left(aes.BlockSize)
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ciphertext = ciphertext.right(aes.BlockSize)
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// CBC mode always works in whole blocks.
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if ciphertext.len%aes.BlockSize != 0 {
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panic('ciphertext is not a multiple of the block size')
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}
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mode := aes.new_cbc(block, iv)
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mode.encrypt_blocks(ciphertext, ciphertext)
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assert ciphertext.hex() == 'c210459b514668ddc44674885e4979215265a6c44431a248421254ef357a8c2a308a8bddf5623af9df91737562041cf1'
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}
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