Port of new TLS API from bc-java
1 files changed, 94 insertions, 0 deletions
diff --git a/crypto/src/tls/HashAlgorithm.cs b/crypto/src/tls/HashAlgorithm.cs
new file mode 100644
index 000000000..2c8ba4fff
--- /dev/null
+++ b/crypto/src/tls/HashAlgorithm.cs
@@ -0,0 +1,94 @@
+using System;
+
+namespace Org.BouncyCastle.Tls
+{
+ /// <summary>RFC 5246 7.4.1.4.1</summary>
+ public abstract class HashAlgorithm
+ {
+ public const short none = 0;
+ public const short md5 = 1;
+ public const short sha1 = 2;
+ public const short sha224 = 3;
+ public const short sha256 = 4;
+ public const short sha384 = 5;
+ public const short sha512 = 6;
+
+ /*
+ * RFC 8422
+ */
+ public const short Intrinsic = 8;
+
+ public static string GetName(short hashAlgorithm)
+ {
+ switch (hashAlgorithm)
+ {
+ case none:
+ return "none";
+ case md5:
+ return "md5";
+ case sha1:
+ return "sha1";
+ case sha224:
+ return "sha224";
+ case sha256:
+ return "sha256";
+ case sha384:
+ return "sha384";
+ case sha512:
+ return "sha512";
+ case Intrinsic:
+ return "Intrinsic";
+ default:
+ return "UNKNOWN";
+ }
+ }
+
+ public static int GetOutputSize(short hashAlgorithm)
+ {
+ switch (hashAlgorithm)
+ {
+ case md5:
+ return 16;
+ case sha1:
+ return 20;
+ case sha224:
+ return 28;
+ case sha256:
+ return 32;
+ case sha384:
+ return 48;
+ case sha512:
+ return 64;
+ default:
+ return -1;
+ }
+ }
+
+ public static string GetText(short hashAlgorithm)
+ {
+ return GetName(hashAlgorithm) + "(" + hashAlgorithm + ")";
+ }
+
+ public static bool IsPrivate(short hashAlgorithm)
+ {
+ return 224 <= hashAlgorithm && hashAlgorithm <= 255;
+ }
+
+ public static bool IsRecognized(short hashAlgorithm)
+ {
+ switch (hashAlgorithm)
+ {
+ case md5:
+ case sha1:
+ case sha224:
+ case sha256:
+ case sha384:
+ case sha512:
+ case Intrinsic:
+ return true;
+ default:
+ return false;
+ }
+ }
+ }
+}
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