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-rw-r--r--src/ssl/tls_suites.cpp77
1 files changed, 77 insertions, 0 deletions
diff --git a/src/ssl/tls_suites.cpp b/src/ssl/tls_suites.cpp
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+++ b/src/ssl/tls_suites.cpp
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+/**
+* TLS Cipher Suites
+* (C) 2004-2006 Jack Lloyd
+*
+* Released under the terms of the Botan license
+*/
+
+#include <botan/tls_suites.h>
+#include <botan/tls_exceptn.h>
+#include <botan/parsing.h>
+#include <vector>
+#include <string>
+
+namespace Botan {
+
+namespace {
+
+/**
+* Convert an SSL/TLS ciphersuite to a string
+*/
+std::string lookup_ciphersuite(u16bit suite)
+ {
+ if(suite == RSA_RC4_MD5) return "RSA/NONE/ARC4/16/MD5";
+ if(suite == RSA_RC4_SHA) return "RSA/NONE/ARC4/16/SHA1";
+ if(suite == RSA_3DES_SHA) return "RSA/NONE/3DES/24/SHA1";
+ if(suite == RSA_AES128_SHA) return "RSA/NONE/AES/16/SHA1";
+ if(suite == RSA_AES256_SHA) return "RSA/NONE/AES/32/SHA1";
+
+ if(suite == DHE_RSA_3DES_SHA) return "RSA/DH/3DES/24/SHA1";
+ if(suite == DHE_RSA_AES128_SHA) return "RSA/DH/AES/16/SHA1";
+ if(suite == DHE_RSA_AES256_SHA) return "RSA/DH/AES/32/SHA1";
+
+ if(suite == DHE_DSS_3DES_SHA) return "DSA/DH/3DES/24/SHA1";
+ if(suite == DHE_DSS_AES128_SHA) return "DSA/DH/AES/16/SHA1";
+ if(suite == DHE_DSS_AES256_SHA) return "DSA/DH/AES/32/SHA1";
+
+ return "";
+ }
+
+}
+
+/**
+* CipherSuite Constructor
+*/
+CipherSuite::CipherSuite(u16bit suite_code)
+ {
+ if(suite_code == 0)
+ return;
+
+ std::string suite_string = lookup_ciphersuite(suite_code);
+
+ if(suite_string == "")
+ throw Invalid_Argument("Unknown ciphersuite: " +
+ to_string(suite_code));
+
+ std::vector<std::string> suite_info = split_on(suite_string, '/');
+
+ if(suite_info[0] == "RSA") sig_algo = RSA_SIG;
+ else if(suite_info[0] == "DSA") sig_algo = DSA_SIG;
+ else if(suite_info[0] == "NONE") sig_algo = NO_SIG;
+ else
+ throw TLS_Exception(INTERNAL_ERROR,
+ "CipherSuite: Unknown sig type " + suite_info[0]);
+
+ if(suite_info[1] == "DH") kex_algo = DH_KEX;
+ else if(suite_info[1] == "RSA") kex_algo = RSA_KEX;
+ else if(suite_info[1] == "NONE") kex_algo = NO_KEX;
+ else
+ throw TLS_Exception(INTERNAL_ERROR,
+ "CipherSuite: Unknown kex type " + suite_info[1]);
+
+ cipher = suite_info[2];
+ cipher_key_length = to_u32bit(suite_info[3]);
+ mac = suite_info[4];
+ }
+
+}