@li0ard/magma/dist/modes/acpkm.js

Magma cipher implementation in pure TypeScript

import { BLOCK_SIZE, Magma } from "../";
import { ctr_acpkm, acpkmDerivation as acpkmDerivation_, acpkmDerivationMaster as acpkmDerivationMaster_, KEYSIZE, omac_acpkm_master } from "@li0ard/gost3413";
/**
 * Encrypts data using the Counter with Advance Cryptographic Prolongation of Key Material (CTR-ACPKM) mode with Magma cipher.
 *
 * @param key Encryption key
 * @param data Data to be encrypted
 * @param iv Initialization vector
 * @returns {Uint8Array}
 */
export const encryptCTR_ACPKM = (key, data, iv) => {
    class ACPKMClass extends Magma {
        encrypt(block) {
            return this.encryptBlock(block);
        }
    }
    const cipher = new Magma(key);
    const encrypter = (buf) => cipher.encryptBlock(buf);
    return ctr_acpkm(ACPKMClass, encrypter, BLOCK_SIZE * 2, BLOCK_SIZE, data, iv);
};
/**
 * Decrypts data using Counter with Advance Cryptographic Prolongation of Key Material (CTR-ACPKM) mode with Magma cipher.
 *
 * @param key Encryption key
 * @param data Data to be decrypted
 * @param iv Initialization vector
 * @returns {Uint8Array}
 */
export const decryptCTR_ACPKM = encryptCTR_ACPKM;
/**
 * ACPKM key derivation
 * @param key Encryption key
 */
export const acpkmDerivation = (key) => {
    const cipher = new Magma(key);
    const encrypter = (buf) => cipher.encryptBlock(buf);
    return acpkmDerivation_(encrypter, BLOCK_SIZE);
};
/**
 * ACPKM master key derivation
 * @param key Encryption key
 * @param keySize Length of key material
 */
export const acpkmDerivationMaster = (key, keySize) => {
    class ACPKMClass extends Magma {
        encrypt(block) {
            return this.encryptBlock(block);
        }
    }
    const cipher = new Magma(key);
    const encrypter = (buf) => cipher.encryptBlock(buf);
    return acpkmDerivationMaster_(ACPKMClass, encrypter, ((640 / 8) | 0), BLOCK_SIZE, keySize * (KEYSIZE + BLOCK_SIZE));
};
/**
 * Compute MAC with Advance Cryptographic Prolongation of Key Material (OMAC-ACPKM) with Magma cipher
 * @param key Encryption key
 * @param data Input data
 */
export const omac_ACPKM = (key, data) => {
    class ACPKMClass extends Magma {
        encrypt(block) {
            return this.encryptBlock(block);
        }
    }
    const cipher = new Magma(key);
    const encrypter = (buf) => cipher.encryptBlock(buf);
    return omac_acpkm_master(ACPKMClass, encrypter, ((640 / 8) | 0), (BLOCK_SIZE * 2), BLOCK_SIZE, data);
};