Description:
flutter string encryption
flutter_string_encryption #
Cross-platform string encryption using common best-practices
(AES/CBC/PKCS5/Random IVs/HMAC-SHA256 Integrity Check).
It uses the format described in this article.
It currently uses Native Platform implementations, which are (we all hope)
constantly vetted and updated by Apple and Google, with some really tiny
library wrappers to ease some of the tedious work.
For the Android side, I used the following library (coming from the same
authors of the article above):
https://github.com/tozny/java-aes-crypto
For the iOS side, I implemented the format described in the article
directly inside the native plugin, and used the following library to
help me with Apple's CommonCrypto functions which are not really easy to
interact with otherwise:
https://github.com/sgl0v/SCrypto
Support #
In order to work on iOS, you need to bump the iOS support version up to
9.0. This can be done inside your ios project Podfile by uncommenting
the very first line of the file:
# Uncomment this line to define a global platform for your project
platform :ios, '9.0'
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Usage #
final cryptor = new PlatformStringCryptor();
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Generate A Secret Key #
Randomly #
Generate it and store it in a safe place - e.g. the Keychain/KeyStore
final String key = await cryptor.generateRandomKey();
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Password-Based #
Generate and (safely) store the salt, and then generate the key with a user-provided
password before encrypting/decrypting your strings.
final password = "user_provided_password";
final String salt = await cryptor.generateSalt();
final String key = await cryptor.generateKeyFromPassword(password, salt);
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Encrypt A String #
final String encrypted = await cryptor.encrypt("A string to encrypt.", key);
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Decrypt A String #
try {
final String decrypted = await cryptor.decrypt(encrypted, key);
print(decrypted); // - A string to encrypt.
} on MacMismatchException {
// unable to decrypt (wrong key or forged data)
}
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License #
MIT (both this plugin and the used helper libraries).
License
For personal and professional use. You cannot resell or redistribute these repositories in their original state.
Files:
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