Signature - Klyn API

Signature

classin packageklyn.cryptography

public abstract class Signature extends Object:

Object

└ Signature

Abstract base class for digital signatures. The concrete RSA APIs are exposed through `RSAPSSSignature` and `RSAPKCS1Signature`, parameterized by a concrete digest such as `SHA256()` or `SHA512()`.

import klyn.cryptography

keys = RSAKeyPairGenerator().generateKeyPair()
signer as Signature = RSAPSSSignature(SHA256())
signer.initSign(keys.privateKeyPem)
token = signer.sign("hello")
verifier as Signature = RSAPSSSignature(SHA256())
verifier.initVerify(keys.publicKeyPem)
print(verifier.verify(token, "hello"))

Fields

Modifier and Type	Member	Description
public readonly	algorithm `algorithm as String`	Canonical signature algorithm name.
public readonly	hashAlgorithm `hashAlgorithm as String`	Canonical digest algorithm name used by the signature.
public readonly	padding `padding as String`	RSA padding mode used by the signature.

Properties inherited from Object: type

Methods

Modifier and Type	Member	Description
public static	getInstance `getInstance(algorithm as String) as Signature throws CryptoException:`	Compatibility factory for dynamic algorithm selection.
public	initSign `initSign(privateKeyPem as String) as Void:`	Initializes the instance for signing with a private key.
public	initVerify `initVerify(publicKeyPem as String) as Void:`	Initializes the instance for verification with a public key.
public	reset `reset() as Void:`	Clears the buffered text accumulated with `update`.
public	sign `sign(text as String = null, outputEncoding as String = "base64") as String throws CryptoException:`	Signs the buffered text and an optional final chunk.
public override	toString `toString() as String:`	No summary.
public	update `update(text as String) as Signature:`	Appends text to the in-memory signature buffer.
public	verify `verify(signature as String, text as String = null, inputEncoding as String = "base64") as Boolean throws CryptoException:`	Verifies a signature against the buffered text and an optional final chunk.

Methods inherited from Object: fromJson, toDict, toJson, toString, toXml