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 ed25519: return "ed25519"; case ed448: return "ed448"; case gostr34102012_256: return "gostr34102012_256"; case gostr34102012_512: return "gostr34102012_512"; 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 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"; default: return "UNKNOWN"; } } public static string GetText(short signatureAlgorithm) { return GetName(signatureAlgorithm) + "(" + signatureAlgorithm + ")"; } } }