RsaSsaPkcs1v15 class abstract

RSA-SSA-PKCS1v15 SignatureAlgorithm.

In browsers, the default implementation will use Web Cryptography API. On other platforms, DartRsaSsaPkcs1v15 will be used.

Private keys must be instances of RsaKeyPair. Public keys must be instances of RsaPublicKey.

You can use package:jwk to encode/decode JSON Web Key (JWK) data.

Example

import 'package:cryptography/cryptography.dart';

Future<void> main() async {
  final algorithm = RsaSsaPkcs1v15(Sha256());

  // Generate a key pair
  final keyPair = await algorithm.newKeyPair();

  // Sign a message
  final message = <int>[1,2,3];
  final signature = await algorithm.sign(
    message,
    keyPair: keyPair,
  );
  print('Signature bytes: ${signature.bytes}');
  print('Public key: ${signature.publicKey.bytes}');

  // Anyone can verify the signature
  final isSignatureCorrect = await algorithm.verify(
    message,
    signature: signature,
  );
}

Inheritance

• Object
• SignatureAlgorithm<PublicKey>
• RsaSsaPkcs1v15

Implementers

• DartRsaSsaPkcs1v15

Constructors

RsaSsaPkcs1v15(HashAlgorithm hashAlgorithm)

factory

RsaSsaPkcs1v15.constructor()

Constructor for subclasses.

const

RsaSsaPkcs1v15.sha256()

A shorthand for RSA-SSA-PKCS1v15-SHA256.

factory

RsaSsaPkcs1v15.sha512()

A shorthand for RSA-SSA-PKCS1v15-SHA512.

factory

Properties

hashAlgorithm → HashAlgorithm

Hashing algorithm.

no setter

hashCode → int

The hash code for this object.

no setter, override

keyPairType → KeyPairType<KeyPairData, PublicKey>

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

newKeyPair({int modulusLength = RsaSsaPkcs1v15.defaultModulusLength, List<int> publicExponent = RsaSsaPkcs1v15.defaultPublicExponent}) → Future<RsaKeyPair>

Generates a new KeyPair for this algorithm.

override

newKeyPairFromSeed(List<int> seed) → Future<KeyPair>

Generates a new KeyPair that uses the seed bytes.

inherited

newSignatureWand() → Future<SignatureWand>

Generates a new SignatureWand that has a random KeyPair.

inherited

newSignatureWandFromKeyPair(KeyPair keyPair) → Future<SignatureWand>

Generates a new SignatureWand that uses the given KeyPair.

inherited

newSignatureWandFromSeed(List<int> seed) → Future<SignatureWand>

Generates a new SignatureWand that uses the given seed bytes.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

sign(List<int> message, {required KeyPair keyPair}) → Future<Signature>

Signs bytes.

inherited

signString(String message, {required KeyPair keyPair}) → Future<Signature>

Signs a string.

inherited

toString() → String

A string representation of this object.

override

verify(List<int> message, {required Signature signature}) → Future<bool>

Verifies whether bytes was signed with signature.

inherited

verifyString(String message, {required Signature signature}) → Future<bool>

Verifies whether a string was signed with signature.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

override

Constants

defaultModulusLength → const int

defaultPublicExponent → const List<int>