Overview

Flutter library that provides a cryptography solution using a repository implementation. This library simplifies the process of handling cryptographic functions such as encryption, decryption, hashing, and digital signatures by leveraging a structured repository pattern. It is designed to be easy to integrate into any Flutter project, ensuring secure data handling and storage with a flexible and scalable architecture.

Methods

AES

Generate Key

Generate AES Key

final key = cryptoAESRepository.getKey(32);

Parameter Name	Type	Required	Description
size	int	Yes	Possible values are 16, 24, or 32. Otherwise, it will throw CoreCryptoException

Get IV Key

Generate Initialization Vector Key

final ivKey = cryptoAESRepository.getIVKey();

Encrypt

Encrypt plain text & return base64

final encrypted = cryptoAESRepository.encrypt(key: key, ivKey: ivKey, plainText: plainText);

Parameter Name	Type	Required	Description
key	string	Yes	Key generated from Generate Key
ivKey	string	Yes	Vector key generated from Get IV Key
plainText	string	Yes	Text to be encrypted
mode	AESMode	no	AES Encryption mode, default is AESMode.cbc

Decrypt

Decrypt encrypted text

final decrypted = cryptoAESRepository.decrypt(key: key, ivKey: ivKey, encryptedText: encrypted);

Parameter Name	Type	Required	Description
key	string	Yes	Key generated from Generate Key
ivKey	string	Yes	Vector key generated from Get IV Key
encryptedText	string	Yes	Encrypted text
mode	AESMode	no	AES Encryption mode, default is AESMode.cbc

RSA

Generate Key

Generate RSA Key

final key = cryptoRSARepository.generateKey();

Encrypt

Encrypt plain text and return CryptoKey

final encrypted = cryptoRSARepository.encrypt(
  encodedPublicKey: key.publicKey,
  plainText: plainText,
  encoding: CoreCrytoRSAEncoding.pkcs1,
  digest: CoreCryptoRSADigest.sha256,
);

Parameter Name	Type	Required	Description
encodedPublicKey	string	Yes	Public key generated from Generate Key
encoding	CoreCrytoRSAEncoding	Yes	-
plainText	string	Yes	Text to be encrypted
digest	CoreCryptoRSADigest	yes	-

Decrypt

Decrypt encrypted text

final decrypted = cryptoRSARepository.decrypt(
  encodedPrivateKey: key.privateKey,
  encryptedText: encrypted,
  encoding: CoreCrytoRSAEncoding.pkcs1,
  digest: CoreCryptoRSADigest.sha256,
);

Parameter Name	Type	Required	Description
encodedPublicKey	string	Yes	Public key generated from Generate Key
encoding	CoreCrytoRSAEncoding	Yes	-
encryptedText	string	Yes	Encrypted Text to be decrypted
digest	CoreCryptoRSADigest	yes	-

ED25519

Generate Key

Generate ED25519 Key

final key = cryptoED25519Repository.generateKey();

Generate Signature

Generate ED25519 Signature

final signature =
cryptoED25519Repository.generateSignature(encodedPrivateKey: key.privateKey, plainText: plainText);

Parameter Name	Type	Required	Description
encodedPrivateKey	string	Yes	Private key generated from Generate Key
plainText	string	Yes	Text to be made into a signature

Verify Signature

Verify ED25519 Signature

final isSignatureVerified = cryptoED25519Repository.verifySignature(
  encodedPublicKey: key.publicKey,
  encodedSignature: signature,
  plainText: plainText,
);

Parameter Name	Type	Required	Description
encodedPublicKey	string	Yes	Public key generated from Generate Key
plainText	string	Yes	Text to be verified
encodedSignature	string	Yes	Signature to be verified by plainText