Zatca — создать пару ключей ECDSA ⇐ C#

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How to generate ECSDA key pair using SecP256r1 curve in C#

To generate an ECDSA key pair using the SecP256r1 (also known as P-256 or prime256v1) curve in C#, you can use the Bouncy Castle library. Here is an example:

Install the Bouncy Castle NuGet package:
Install-Package BouncyCastle // Create ECDSA key pair generator var ecKeyPairGenerator = new ECKeyPairGenerator(); var genParam = new ECKeyGenerationParameters(SecObjectIdentifiers.SecP256r1, new SecureRandom()); ecKeyPairGenerator.Init(genParam); AsymmetricCipherKeyPair ecKeyPair = ecKeyPairGenerator.GenerateKeyPair(); // Convert Private Key to PEM format string privateKeyPem = ConvertToPem(ecKeyPair.Private); public string ConvertToPem(AsymmetricKeyParameter privateKey) { StringWriter stringWriter = new StringWriter(); // Manually construct PEM format for EC private key b PemWriter pemWriter = new PemWriter(stringWriter); PemObject pemObject = new PemObject("EC PRIVATE KEY", EncodeEcPrivateKey(privateKey)); pemWriter.WriteObject(pemObject); return stringWriter.ToString(); }

Источник: https://stackoverflow.com/questions/780 ... a-key-pair