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How to validate ES384 JWT signature with x and y coordinate in python

坚强是说给别人听的谎言 提交于 2021-02-10 15:13:41
问题 I have a JWT that is as follows: Authorization: Bearer eyJhbGciOiJFUzM4NCIsInR5cCI6IkpXVCIsImtpZCI6IjQ0ODIzZjNkLTBiMDEtNGE2Yy1hODBlLWI5ZDNlOGE3MjI2ZiIsImprdSI6Imh0dHBzOi8vc2FuZGJveC5jZHMtaG9va3Mub3JnLy53ZWxsLWtub3duL2p3a3MuanNvbiJ9.eyJpc3MiOiJodHRwczovL3NhbmRib3guY2RzLWhvb2tzLm9yZyIsImF1ZCI6Imh0dHA6Ly8xMjcuMC4wLjE6ODAwMC9jZHMtc2VydmljZXMiLCJleHAiOjE1OTQyMzA5MDAsImlhdCI6MTU5NDIzMDYwMCwianRpIjoiZWZiMzc3M2QtM2EyOC00M2UyLTlmYmMtYjkzNmE5YWUzODhiIn0.Cbey3n5NkDRoCLHZ2WMFc1z

How to validate ES384 JWT signature with x and y coordinate in python

我的未来我决定 提交于 2021-02-10 15:12:06
问题 I have a JWT that is as follows: Authorization: Bearer eyJhbGciOiJFUzM4NCIsInR5cCI6IkpXVCIsImtpZCI6IjQ0ODIzZjNkLTBiMDEtNGE2Yy1hODBlLWI5ZDNlOGE3MjI2ZiIsImprdSI6Imh0dHBzOi8vc2FuZGJveC5jZHMtaG9va3Mub3JnLy53ZWxsLWtub3duL2p3a3MuanNvbiJ9.eyJpc3MiOiJodHRwczovL3NhbmRib3guY2RzLWhvb2tzLm9yZyIsImF1ZCI6Imh0dHA6Ly8xMjcuMC4wLjE6ODAwMC9jZHMtc2VydmljZXMiLCJleHAiOjE1OTQyMzA5MDAsImlhdCI6MTU5NDIzMDYwMCwianRpIjoiZWZiMzc3M2QtM2EyOC00M2UyLTlmYmMtYjkzNmE5YWUzODhiIn0.Cbey3n5NkDRoCLHZ2WMFc1z

Key exchange using ECDH vs ECIES

懵懂的女人 提交于 2021-02-08 10:33:38
问题 I'm a beginner to ECC crypto programming. Does any one explain to me the difference with using ECDH for shared key exchange and use of ECIES by encrypting shared key with the public key of the receiver ? I'm feeling that ECIES could also provide me secure key exchange as long as the private key is kept secret. Thank you. 回答1: ECDH is a shared-secret derivation protocol. Two parties use knowledge of their own "private key" and their partner's "public key" to generate a shared secret. Generally

ECDSA signature generation using secp256r1 curve and SHA256 algorithm - BouncyCastle

一个人想着一个人 提交于 2021-02-07 04:00:48
问题 I am trying to generate signature using ECDSA with secp256r1 curve (P256) and SHA256 algorithm for message hash. Also i am using Bouncy Castle libraries. Code below, public class MyTest { /** * @param args */ public static void main(String[] args) { new MyTest().getSign(); } void getSign() { // Get the instance of the Key Generator with "EC" algorithm try { KeyPairGenerator g = KeyPairGenerator.getInstance("EC"); ECGenParameterSpec kpgparams = new ECGenParameterSpec("secp256r1"); g.initialize

ECDSA Digital Signature Verification on Android P

淺唱寂寞╮ 提交于 2021-01-27 13:19:42
问题 import android.os.Bundle; import android.util.Base64; import android.widget.Toast; import org.bouncycastle.jce.provider.BouncyCastleProvider; // implementation 'org.bouncycastle:bcprov-jdk16:1.46' import java.security.KeyFactory; import java.security.PublicKey; import java.security.Security; import java.security.Signature; import java.security.spec.X509EncodedKeySpec; import androidx.appcompat.app.AppCompatActivity; public class MainActivity extends AppCompatActivity { static final String