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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 | 404x 404x 1616x 752364x 752364x 752364x 752364x 752364x 752364x 752364x 752364x 404x 452867x 452867x 452867x 404x 13092x 13092x 13092x 13092x 404x 808x 4990988x 4990988x 4990988x 4990988x 404x 3445x 3445x 3445x 3445x 3445x 3445x 404x 404x 404x 404x 404x 404x | import * as crypto from 'crypto';
type AES256Callback = (key: Buffer, iv: Buffer, input: Buffer, output: Buffer) => number | Error;
export function makeAES256Hook(
method: 'createCipheriv' | 'createDecipheriv',
mode: 'aes-256-cbc' | 'aes-256-ctr'
): AES256Callback {
return function (key: Buffer, iv: Buffer, input: Buffer, output: Buffer): number | Error {
let result;
try {
const cipher = crypto[method](mode, key, iv);
cipher.setAutoPadding(false);
result = cipher.update(input);
const final = cipher.final();
Iif (final.length > 0) {
result = Buffer.concat([result, final]);
}
} catch (e) {
return e;
}
result.copy(output);
return result.length;
};
}
export function randomHook(buffer: Buffer, count: number): number | Error {
try {
crypto.randomFillSync(buffer, 0, count);
} catch (e) {
return e;
}
return count;
}
export function sha256Hook(input: Buffer, output: Buffer): number | Error {
let result;
try {
result = crypto.createHash('sha256').update(input).digest();
} catch (e) {
return e;
}
result.copy(output);
return result.length;
}
type HMACHook = (key: Buffer, input: Buffer, output: Buffer) => number | Error;
export function makeHmacHook(algorithm: 'sha512' | 'sha256'): HMACHook {
return (key: Buffer, input: Buffer, output: Buffer): number | Error => {
let result;
try {
result = crypto.createHmac(algorithm, key).update(input).digest();
} catch (e) {
return e;
}
result.copy(output);
return result.length;
};
}
export function signRsaSha256Hook(key: Buffer, input: Buffer, output: Buffer): number | Error {
let result;
try {
const signer = crypto.createSign('sha256WithRSAEncryption');
const privateKey = Buffer.from(
`-----BEGIN PRIVATE KEY-----\n${key.toString('base64')}\n-----END PRIVATE KEY-----\n`
);
result = signer.update(input).end().sign(privateKey);
} catch (e) {
return e;
}
result.copy(output);
return result.length;
}
export const aes256CbcEncryptHook = makeAES256Hook('createCipheriv', 'aes-256-cbc');
export const aes256CbcDecryptHook = makeAES256Hook('createDecipheriv', 'aes-256-cbc');
export const aes256CtrEncryptHook = makeAES256Hook('createCipheriv', 'aes-256-ctr');
export const aes256CtrDecryptHook = makeAES256Hook('createDecipheriv', 'aes-256-ctr');
export const hmacSha512Hook = makeHmacHook('sha512');
export const hmacSha256Hook = makeHmacHook('sha256');
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