EC Public key from public key bytes extracted from azure keyvault

Question

如何从字节中获取 public 密钥？例如，我有 public 密钥（使用 EC 算法生成，曲线 "secp256r1"）及其在 java 上的编码字节，如何在 c# 中从这些字节创建 public 密钥？

Answer 1

有多种方法可以从保管库中获取密钥。我使用了以下内容。

var secret = keyVaultClient.GetSecretAsync(vaultAddress, "Honeywellpkiofflinetokenprime256v1cert").GetAwaiter().GetResult();
 X509Certificate2Collection exportedCertCollection = new X509Certificate2Collection();
            exportedCertCollection.Import(Convert.FromBase64String(secret.Value));


            X509Certificate2 certFromSecret = exportedCertCollection.Cast<X509Certificate2>().Single(s => s.HasPrivateKey);
            var publickeybyte = certFromSecret.GetPublicKey();
            var publicekeybyte = certFromSecret.GetPublicKeyString();
            var PublicKeyCNG= certFromSecret.GetECDsaPublicKey();


            var privateECDsa = LoadPrivateKey(FromHexString(privateKey));
            var publiccECDsa = LoadPublicKey(FromHexString(publicKey));

现在您可以使用相同的密钥来验证您的签名信息。

EC Public key from public key bytes extracted from azure keyvault

EC Public key from public key bytes extracted from azure keyvault

c#

azure

azure-keyvault

public-key

ecdsa