This plugin helps you by generating the assymetric RSA key pair.
The keys are generated and persisted in android/ios keystore.
The details of keys generated and store in android/iOS keystore is as follows:
This plugin exposes the following methods:
getPublicKey
: returns the RSA public keyencrypt
: encrypts the plain text using private key from the key pairverify
: verifies a signature and returns a boolean if the signature is signed by the same key pair.This function is used to get the RSA public key which is store the android and ios key store. This key pair is persisted in key store, i.e it is generated once, and always re used for signing and verification.
static Future<String> getPublicKey()
final String rsaPublicKey = await Cipher.getPublicKey();
This function returns a signature which is signed by the platoform's private key.
static Future<String> sign(String plainData)
final String signature = await Cipher.sign('some plain data');
This function returns a boolean, and takes a plain data and signature.
This function verifies the signature against the plain data, it returns true
if the signature is produced by the same device's private key.
static Future<bool> verify(String plainText, String signature)
final bool result = await Cipher.verify('somePassword', 'SIGNATURE-XX');
The above will checks if the SIGNATURE-XX
matches the somePassword
or not.