23 lines
737 B
TypeScript
23 lines
737 B
TypeScript
export const expandKeyFake = (key: number[][]): number[][][] => {
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/**
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* @param {string} key - A string of 128, 192, or 256 bits.
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* @returns {string[]} An array of round keys.
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*/
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const N_k = key[0].length // Number of columns in the key matrix (4 for 128-bit, 6 for 192-bit, 8 for 256-bit)
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const N_r = N_k + 6 // Number of rounds (10 for 128-bit, 12 for 192-bit, 14 for 256-bit)
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const totalKeys = 4 * (N_r + 1) // Total number of 4-byte words required
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const expandedKeys: number[][][] = []
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for (let i = 0;i < totalKeys / 4;i++) {
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const matrix: number[][] = [
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[0, 0, 0, 0],
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[0, 0, 0, 0],
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[0, 0, 0, 0],
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[0, 0, 0, 0],
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]
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expandedKeys.push(matrix)
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}
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return expandedKeys
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}
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