multi-downloader-nx_mirror/modules/playready/key.ts

export enum KeyType {
    Invalid = 0x0000,
    AES128CTR = 0x0001,
    RC4 = 0x0002,
    AES128ECB = 0x0003,
    Cocktail = 0x0004,
    AESCBC = 0x0005,
    UNKNOWN = 0xffff
}

export function getKeyType(value: number): KeyType {
    switch (value) {
        case KeyType.Invalid:
        case KeyType.AES128CTR:
        case KeyType.RC4:
        case KeyType.AES128ECB:
        case KeyType.Cocktail:
        case KeyType.AESCBC:
            return value
        default:
            return KeyType.UNKNOWN
    }
}

export enum CipherType {
    Invalid = 0x0000,
    RSA128 = 0x0001,
    ChainedLicense = 0x0002,
    ECC256 = 0x0003,
    ECCforScalableLicenses = 0x0004,
    Scalable = 0x0005,
    UNKNOWN = 0xffff
}

export function getCipherType(value: number): CipherType {
    switch (value) {
        case CipherType.Invalid:
        case CipherType.RSA128:
        case CipherType.ChainedLicense:
        case CipherType.ECC256:
        case CipherType.ECCforScalableLicenses:
        case CipherType.Scalable:
            return value
        default:
            return CipherType.UNKNOWN
    }
}

export class Key {
    key_id: string
    key_type: KeyType
    cipher_type: CipherType
    key_length: number
    key: string

    constructor(
        key_id: Buffer | string,
        key_type: number,
        cipher_type: number,
        key_length: number,
        key: Buffer | string
    ) {
        this.key_id = Buffer.isBuffer(key_id) ? key_id.toString('hex') : key_id

        this.key_type = getKeyType(key_type)
        this.cipher_type = getCipherType(cipher_type)
        this.key_length = key_length
        this.key = Buffer.isBuffer(key) ? key.toString('hex') : key
    }
}