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Code Issues Releases Wiki Activity

Move asymmetric crypto functions out of crypto service (#10903)

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This commit is contained in:
Bernd Schoolmann
2024-10-01 08:47:41 -07:00
committed by GitHub
parent f2339b0586
commit dafe795854
36 changed files with 126 additions and 152 deletions
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16
libs/common/src/platform/abstractions/crypto.service.ts
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@@ -329,22 +329,6 @@ export abstract class CryptoService {
* @param userId The user's Id
*/
abstract clearKeys(userId?: string): Promise<any>;
/**
* RSA encrypts a value.
* @param data The data to encrypt
* @param publicKey The public key to use for encryption, if not provided, the user's public key will be used
* @returns The encrypted data
* @throws If the given publicKey is a null-ish value.
*/
abstract rsaEncrypt(data: Uint8Array, publicKey: Uint8Array): Promise<EncString>;
/**
* Decrypts a value using RSA.
* @param encValue The encrypted value to decrypt
* @param privateKey The private key to use for decryption
* @returns The decrypted value
* @throws If the given privateKey is a null-ish value.
*/
abstract rsaDecrypt(encValue: string, privateKey: Uint8Array): Promise<Uint8Array>;
abstract randomNumber(min: number, max: number): Promise<number>;
/**
* Generates a new cipher key

66
libs/common/src/platform/services/crypto.service.ts
View File

@@ -45,7 +45,7 @@ import { KeyGenerationService } from "../abstractions/key-generation.service";
import { LogService } from "../abstractions/log.service";
import { PlatformUtilsService } from "../abstractions/platform-utils.service";
import { StateService } from "../abstractions/state.service";
import { KeySuffixOptions, HashPurpose, EncryptionType } from "../enums";
import { KeySuffixOptions, HashPurpose } from "../enums";
import { convertValues } from "../misc/convert-values";
import { EFFLongWordList } from "../misc/wordlist";
import { EncString, EncryptedString } from "../models/domain/enc-string";
@@ -441,7 +441,7 @@ export class CryptoService implements CryptoServiceAbstraction {
const shareKey = await this.keyGenerationService.createKey(512);
userId ??= await firstValueFrom(this.stateProvider.activeUserId$);
const publicKey = await firstValueFrom(this.userPublicKey$(userId));
const encShareKey = await this.rsaEncrypt(shareKey.key, publicKey);
const encShareKey = await this.encryptService.rsaEncrypt(shareKey.key, publicKey);
return [encShareKey, shareKey as T];
}
@@ -550,68 +550,6 @@ export class CryptoService implements CryptoServiceAbstraction {
await this.stateProvider.setUserState(USER_EVER_HAD_USER_KEY, null, userId);
}
async rsaEncrypt(data: Uint8Array, publicKey: Uint8Array): Promise<EncString> {
if (publicKey == null) {
throw new Error("'publicKey' is a required parameter and must be non-null");
}
const encBytes = await this.cryptoFunctionService.rsaEncrypt(data, publicKey, "sha1");
return new EncString(EncryptionType.Rsa2048_OaepSha1_B64, Utils.fromBufferToB64(encBytes));
}
async rsaDecrypt(encValue: string, privateKey: Uint8Array): Promise<Uint8Array> {
if (privateKey == null) {
throw new Error("'privateKey' is a required parameter and must be non-null");
}
const headerPieces = encValue.split(".");
let encType: EncryptionType = null;
let encPieces: string[];
if (headerPieces.length === 1) {
encType = EncryptionType.Rsa2048_OaepSha256_B64;
encPieces = [headerPieces[0]];
} else if (headerPieces.length === 2) {
try {
encType = parseInt(headerPieces[0], null);
encPieces = headerPieces[1].split("|");
} catch (e) {
this.logService.error(e);
}
}
switch (encType) {
case EncryptionType.Rsa2048_OaepSha256_B64:
case EncryptionType.Rsa2048_OaepSha1_B64:
case EncryptionType.Rsa2048_OaepSha256_HmacSha256_B64: // HmacSha256 types are deprecated
case EncryptionType.Rsa2048_OaepSha1_HmacSha256_B64:
break;
default:
throw new Error("encType unavailable.");
}
if (encPieces == null || encPieces.length <= 0) {
throw new Error("encPieces unavailable.");
}
const data = Utils.fromB64ToArray(encPieces[0]);
let alg: "sha1" | "sha256" = "sha1";
switch (encType) {
case EncryptionType.Rsa2048_OaepSha256_B64:
case EncryptionType.Rsa2048_OaepSha256_HmacSha256_B64:
alg = "sha256";
break;
case EncryptionType.Rsa2048_OaepSha1_B64:
case EncryptionType.Rsa2048_OaepSha1_HmacSha256_B64:
break;
default:
throw new Error("encType unavailable.");
}
return this.cryptoFunctionService.rsaDecrypt(data, privateKey, alg);
}
// EFForg/OpenWireless
// ref https://github.com/EFForg/OpenWireless/blob/master/app/js/diceware.js
async randomNumber(min: number, max: number): Promise<number> {