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import { AESECBCipher, AESEAXCipher } from "./aes.js";
import { DESCBCCipher, DESECBCipher } from "./des.js";
import { RSACipher } from "./rsa.js";
import { DHCipher } from "./dh.js";
import { MD5 } from "./md5.js";
// A single interface for the cryptographic algorithms not supported by SubtleCrypto.
// Both synchronous and asynchronous implmentations are allowed.
class LegacyCrypto {
constructor() {
this._algorithms = {
"AES-ECB": AESECBCipher,
"AES-EAX": AESEAXCipher,
"DES-ECB": DESECBCipher,
"DES-CBC": DESCBCCipher,
"RSA-PKCS1-v1_5": RSACipher,
"DH": DHCipher,
"MD5": MD5,
};
}
encrypt(algorithm, key, data) {
if (key.algorithm.name !== algorithm.name) {
throw new Error("algorithm does not match");
}
if (typeof key.encrypt !== "function") {
throw new Error("key does not support encryption");
}
return key.encrypt(algorithm, data);
}
decrypt(algorithm, key, data) {
if (key.algorithm.name !== algorithm.name) {
throw new Error("algorithm does not match");
}
if (typeof key.decrypt !== "function") {
throw new Error("key does not support encryption");
}
return key.decrypt(algorithm, data);
}
importKey(format, keyData, algorithm, extractable, keyUsages) {
if (format !== "raw") {
throw new Error("key format is not supported");
}
const alg = this._algorithms[algorithm.name];
if (typeof alg === "undefined" || typeof alg.importKey !== "function") {
throw new Error("algorithm is not supported");
}
return alg.importKey(keyData, algorithm, extractable, keyUsages);
}
generateKey(algorithm, extractable, keyUsages) {
const alg = this._algorithms[algorithm.name];
if (typeof alg === "undefined" || typeof alg.generateKey !== "function") {
throw new Error("algorithm is not supported");
}
return alg.generateKey(algorithm, extractable, keyUsages);
}
exportKey(format, key) {
if (format !== "raw") {
throw new Error("key format is not supported");
}
if (typeof key.exportKey !== "function") {
throw new Error("key does not support exportKey");
}
return key.exportKey();
}
digest(algorithm, data) {
const alg = this._algorithms[algorithm];
if (typeof alg !== "function") {
throw new Error("algorithm is not supported");
}
return alg(data);
}
deriveBits(algorithm, key, length) {
if (key.algorithm.name !== algorithm.name) {
throw new Error("algorithm does not match");
}
if (typeof key.deriveBits !== "function") {
throw new Error("key does not support deriveBits");
}
return key.deriveBits(algorithm, length);
}
}
export default new LegacyCrypto;
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