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using System;
namespace Org.BouncyCastle.Tls
{
/**
* RFC 5246 7.4.1.4.1 (in RFC 2246, there were no specific values assigned)
*/
public class SignatureAlgorithm
{
public const short anonymous = 0;
public const short rsa = 1;
public const short dsa = 2;
public const short ecdsa = 3;
/*
* RFC 8422
*/
public const short ed25519 = 7;
public const short ed448 = 8;
/*
* RFC 8446 (implied from SignatureScheme values)
* RFC 8447 reserved these values without allocating the implied names
*/
public const short rsa_pss_rsae_sha256 = 4;
public const short rsa_pss_rsae_sha384 = 5;
public const short rsa_pss_rsae_sha512 = 6;
public const short rsa_pss_pss_sha256 = 9;
public const short rsa_pss_pss_sha384 = 10;
public const short rsa_pss_pss_sha512 = 11;
/*
* RFC 8734 (implied from SignatureScheme values)
*/
public const short ecdsa_brainpoolP256r1tls13_sha256 = 26;
public const short ecdsa_brainpoolP384r1tls13_sha384 = 27;
public const short ecdsa_brainpoolP512r1tls13_sha512 = 28;
/*
* draft-smyshlyaev-tls12-gost-suites-10
*/
public const short gostr34102012_256 = 64;
public const short gostr34102012_512 = 65;
public static short GetClientCertificateType(short signatureAlgorithm)
{
switch (signatureAlgorithm)
{
case SignatureAlgorithm.rsa:
case SignatureAlgorithm.rsa_pss_rsae_sha256:
case SignatureAlgorithm.rsa_pss_rsae_sha384:
case SignatureAlgorithm.rsa_pss_rsae_sha512:
case SignatureAlgorithm.rsa_pss_pss_sha256:
case SignatureAlgorithm.rsa_pss_pss_sha384:
case SignatureAlgorithm.rsa_pss_pss_sha512:
return ClientCertificateType.rsa_sign;
case SignatureAlgorithm.dsa:
return ClientCertificateType.dss_sign;
case SignatureAlgorithm.ecdsa:
case SignatureAlgorithm.ed25519:
case SignatureAlgorithm.ed448:
return ClientCertificateType.ecdsa_sign;
case SignatureAlgorithm.gostr34102012_256:
return ClientCertificateType.gost_sign256;
case SignatureAlgorithm.gostr34102012_512:
return ClientCertificateType.gost_sign512;
default:
return -1;
}
}
public static string GetName(short signatureAlgorithm)
{
switch (signatureAlgorithm)
{
case anonymous:
return "anonymous";
case rsa:
return "rsa";
case dsa:
return "dsa";
case ecdsa:
return "ecdsa";
case rsa_pss_rsae_sha256:
return "rsa_pss_rsae_sha256";
case rsa_pss_rsae_sha384:
return "rsa_pss_rsae_sha384";
case rsa_pss_rsae_sha512:
return "rsa_pss_rsae_sha512";
case ed25519:
return "ed25519";
case ed448:
return "ed448";
case rsa_pss_pss_sha256:
return "rsa_pss_pss_sha256";
case rsa_pss_pss_sha384:
return "rsa_pss_pss_sha384";
case rsa_pss_pss_sha512:
return "rsa_pss_pss_sha512";
case ecdsa_brainpoolP256r1tls13_sha256:
return "ecdsa_brainpoolP256r1tls13_sha256";
case ecdsa_brainpoolP384r1tls13_sha384:
return "ecdsa_brainpoolP384r1tls13_sha384";
case ecdsa_brainpoolP512r1tls13_sha512:
return "ecdsa_brainpoolP512r1tls13_sha512";
case gostr34102012_256:
return "gostr34102012_256";
case gostr34102012_512:
return "gostr34102012_512";
default:
return "UNKNOWN";
}
}
public static string GetText(short signatureAlgorithm)
{
return GetName(signatureAlgorithm) + "(" + signatureAlgorithm + ")";
}
public static bool IsRecognized(short signatureAlgorithm)
{
switch (signatureAlgorithm)
{
case anonymous:
case rsa:
case dsa:
case ecdsa:
case rsa_pss_rsae_sha256:
case rsa_pss_rsae_sha384:
case rsa_pss_rsae_sha512:
case ed25519:
case ed448:
case rsa_pss_pss_sha256:
case rsa_pss_pss_sha384:
case rsa_pss_pss_sha512:
case ecdsa_brainpoolP256r1tls13_sha256:
case ecdsa_brainpoolP384r1tls13_sha384:
case ecdsa_brainpoolP512r1tls13_sha512:
case gostr34102012_256:
case gostr34102012_512:
return true;
default:
return false;
}
}
}
}
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