Function decryptFile

frontend/file.js:128–163

(encryptedData, encodedKey, encodedIv, mimeType, fileName)

}

const decryptFile = async (encryptedData, encodedKey, encodedIv, mimeType, fileName) => {
    const rawKey = base64UrlToArrayBuffer(encodedKey);
    const iv = base64UrlToArrayBuffer(encodedIv);

    const key = await crypto.subtle.importKey(
        'raw',
        rawKey,
        {
            name: 'AES-GCM',
            length: 256
        },
        false,
        [
            "decrypt"
        ]
    );

    const decryptedData = await crypto.subtle.decrypt(
        {
            name: 'AES-GCM',
            iv
        },
        key,
        encryptedData
    );

    return new File(
        [
            decryptedData
        ],
        fileName,
        {
            type: mimeType
        }
    );
}