diff options
Diffstat (limited to 'Cryptlib/Include/openssl/ssl3.h')
| -rw-r--r-- | Cryptlib/Include/openssl/ssl3.h | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/Cryptlib/Include/openssl/ssl3.h b/Cryptlib/Include/openssl/ssl3.h index a1a19cbf..b9a85eff 100644 --- a/Cryptlib/Include/openssl/ssl3.h +++ b/Cryptlib/Include/openssl/ssl3.h @@ -129,6 +129,9 @@ extern "C" { #endif +/* Signalling cipher suite value: from draft-ietf-tls-renegotiation-03.txt */ +#define SSL3_CK_SCSV 0x030000FF + #define SSL3_CK_RSA_NULL_MD5 0x03000001 #define SSL3_CK_RSA_NULL_SHA 0x03000002 #define SSL3_CK_RSA_RC4_40_MD5 0x03000003 @@ -326,11 +329,21 @@ typedef struct ssl3_buffer_st #define SSL3_CT_NUMBER 7 -#define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS 0x0001 -#define SSL3_FLAGS_DELAY_CLIENT_FINISHED 0x0002 -#define SSL3_FLAGS_POP_BUFFER 0x0004 -#define TLS1_FLAGS_TLS_PADDING_BUG 0x0008 -#define SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION 0x0010 +#define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS 0x0001 +#define SSL3_FLAGS_DELAY_CLIENT_FINISHED 0x0002 +#define SSL3_FLAGS_POP_BUFFER 0x0004 +#define TLS1_FLAGS_TLS_PADDING_BUG 0x0008 + +/* SSL3_FLAGS_SGC_RESTART_DONE is set when we + * restart a handshake because of MS SGC and so prevents us + * from restarting the handshake in a loop. It's reset on a + * renegotiation, so effectively limits the client to one restart + * per negotiation. This limits the possibility of a DDoS + * attack where the client handshakes in a loop using SGC to + * restart. Servers which permit renegotiation can still be + * effected, but we can't prevent that. + */ +#define SSL3_FLAGS_SGC_RESTART_DONE 0x0040 typedef struct ssl3_state_st { @@ -441,6 +454,12 @@ typedef struct ssl3_state_st int cert_request; } tmp; + /* Connection binding to prevent renegotiation attacks */ + unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; + unsigned char previous_client_finished_len; + unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; + unsigned char previous_server_finished_len; + int send_connection_binding; /* TODOEKR */ } SSL3_STATE; |