X-Git-Url: https://git.openssl.org/gitweb/?a=blobdiff_plain;f=ssl%2Fssl3.h;h=4e72c1749bc1b9710866b01bdba2809ccb2cfdf2;hb=3b1fb1a0226e29c9d7c79ff7fbde21ef9cac4deb;hp=21297596230d74bf83aab2724111f4136bdc488a;hpb=89bbe14c506b9bd2fd00e6bae22a99ef1ee7ad19;p=openssl.git diff --git a/ssl/ssl3.h b/ssl/ssl3.h index 2129759623..4e72c1749b 100644 --- a/ssl/ssl3.h +++ b/ssl/ssl3.h @@ -128,6 +128,9 @@ 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 @@ -248,12 +251,27 @@ extern "C" { #define SSL3_SESSION_ID_SIZE 32 #define SSL3_RT_HEADER_LENGTH 5 +#ifndef SSL3_ALIGN_PAYLOAD + /* Some will argue that this increases memory footprint, but it's + * not actually true. Point is that malloc has to return at least + * 64-bit aligned pointers, meaning that allocating 5 bytes wastes + * 3 bytes in either case. Suggested pre-gaping simply moves these + * wasted bytes from the end of allocated region to its front, + * but makes data payload aligned, which improves performance:-) */ +# define SSL3_ALIGN_PAYLOAD 8 +#else +# if (SSL3_ALIGN_PAYLOAD&(SSL3_ALIGN_PAYLOAD-1))!=0 +# error "insane SSL3_ALIGN_PAYLOAD" +# undef SSL3_ALIGN_PAYLOAD +# endif +#endif + /* This is the maximum MAC (digest) size used by the SSL library. - * Currently this is 20 when SHA1 is used. This must be updated if larger - * digests are used in future. + * Currently maximum of 20 is used by SHA1, but we reserve for + * future extension for 512-bit hashes. */ -#define SSL3_RT_MAX_MD_SIZE 20 +#define SSL3_RT_MAX_MD_SIZE 64 /* Maximum block size used in all ciphersuites. Currently 16 for AES. */ @@ -292,7 +310,6 @@ extern "C" { (SSL3_RT_MAX_ENCRYPTED_OVERHEAD+SSL3_RT_MAX_COMPRESSED_LENGTH) #define SSL3_RT_MAX_PACKET_SIZE \ (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH) -#define SSL3_RT_MAX_DATA_SIZE (1024*1024) #define SSL3_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54" #define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52" @@ -305,6 +322,7 @@ extern "C" { #define SSL3_RT_ALERT 21 #define SSL3_RT_HANDSHAKE 22 #define SSL3_RT_APPLICATION_DATA 23 +#define TLS1_RT_HEARTBEAT 24 #define SSL3_AL_WARNING 1 #define SSL3_AL_FATAL 2 @@ -322,6 +340,11 @@ extern "C" { #define SSL3_AD_CERTIFICATE_UNKNOWN 46 #define SSL3_AD_ILLEGAL_PARAMETER 47 /* fatal */ +#define TLS1_HB_REQUEST 1 +#define TLS1_HB_RESPONSE 2 + +#ifndef OPENSSL_NO_SSL_INTERN + typedef struct ssl3_record_st { /*r */ int type; /* type of record */ @@ -343,6 +366,8 @@ typedef struct ssl3_buffer_st int left; /* how many bytes left */ } SSL3_BUFFER; +#endif + #define SSL3_CT_RSA_SIGN 1 #define SSL3_CT_DSS_SIGN 2 #define SSL3_CT_RSA_FIXED_DH 3 @@ -354,13 +379,28 @@ typedef struct ssl3_buffer_st * enough to contain all of the cert types defined either for * SSLv3 and TLSv1. */ -#define SSL3_CT_NUMBER 7 +#define SSL3_CT_NUMBER 9 #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 TLS1_FLAGS_SKIP_CERT_VERIFY 0x0010 +#define TLS1_FLAGS_KEEP_HANDSHAKE 0x0020 + +/* 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 + +#ifndef OPENSSL_NO_SSL_INTERN typedef struct ssl3_state_st { @@ -368,8 +408,10 @@ typedef struct ssl3_state_st int delay_buf_pop_ret; unsigned char read_sequence[8]; + int read_mac_secret_size; unsigned char read_mac_secret[EVP_MAX_MD_SIZE]; unsigned char write_sequence[8]; + int write_mac_secret_size; unsigned char write_mac_secret[EVP_MAX_MD_SIZE]; unsigned char server_random[SSL3_RANDOM_SIZE]; @@ -403,9 +445,11 @@ typedef struct ssl3_state_st const unsigned char *wpend_buf; /* used during startup, digest all incoming/outgoing packets */ - EVP_MD_CTX finish_dgst1; - EVP_MD_CTX finish_dgst2; - + BIO *handshake_buffer; + /* When set of handshake digests is determined, buffer is hashed + * and freed and MD_CTX-es for all required digests are stored in + * this array */ + EVP_MD_CTX **handshake_dgst; /* this is set whenerver we see a change_cipher_spec message * come in when we are not looking for one */ int change_cipher_spec; @@ -425,6 +469,14 @@ typedef struct ssl3_state_st int in_read_app_data; + /* Opaque PRF input as used for the current handshake. + * These fields are used only if TLSEXT_TYPE_opaque_prf_input is defined + * (otherwise, they are merely present to improve binary compatibility) */ + void *client_opaque_prf_input; + size_t client_opaque_prf_input_len; + void *server_opaque_prf_input; + size_t server_opaque_prf_input_len; + struct { /* actually only needs to be 16+20 */ unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2]; @@ -434,12 +486,12 @@ typedef struct ssl3_state_st int finish_md_len; unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2]; int peer_finish_md_len; - + unsigned long message_size; int message_type; /* used to hold the new cipher we are going to use */ - SSL_CIPHER *new_cipher; + const SSL_CIPHER *new_cipher; #ifndef OPENSSL_NO_DH DH *dh; #endif @@ -466,6 +518,8 @@ typedef struct ssl3_state_st const EVP_CIPHER *new_sym_enc; const EVP_MD *new_hash; + int new_mac_pkey_type; + int new_mac_secret_size; #ifndef OPENSSL_NO_COMP const SSL_COMP *new_compression; #else @@ -474,13 +528,30 @@ 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 */ + +#ifndef OPENSSL_NO_NEXTPROTONEG + /* Set if we saw the Next Protocol Negotiation extension from + our peer. */ + int next_proto_neg_seen; +#endif } SSL3_STATE; +#endif /* SSLv3 */ /*client */ /* extra state */ #define SSL3_ST_CW_FLUSH (0x100|SSL_ST_CONNECT) +#ifndef OPENSSL_NO_SCTP +#define DTLS1_SCTP_ST_CW_WRITE_SOCK (0x310|SSL_ST_CONNECT) +#define DTLS1_SCTP_ST_CR_READ_SOCK (0x320|SSL_ST_CONNECT) +#endif /* write to server */ #define SSL3_ST_CW_CLNT_HELLO_A (0x110|SSL_ST_CONNECT) #define SSL3_ST_CW_CLNT_HELLO_B (0x111|SSL_ST_CONNECT) @@ -508,6 +579,10 @@ typedef struct ssl3_state_st #define SSL3_ST_CW_CERT_VRFY_B (0x191|SSL_ST_CONNECT) #define SSL3_ST_CW_CHANGE_A (0x1A0|SSL_ST_CONNECT) #define SSL3_ST_CW_CHANGE_B (0x1A1|SSL_ST_CONNECT) +#ifndef OPENSSL_NO_NEXTPROTONEG +#define SSL3_ST_CW_NEXT_PROTO_A (0x200|SSL_ST_CONNECT) +#define SSL3_ST_CW_NEXT_PROTO_B (0x201|SSL_ST_CONNECT) +#endif #define SSL3_ST_CW_FINISHED_A (0x1B0|SSL_ST_CONNECT) #define SSL3_ST_CW_FINISHED_B (0x1B1|SSL_ST_CONNECT) /* read from server */ @@ -515,10 +590,18 @@ typedef struct ssl3_state_st #define SSL3_ST_CR_CHANGE_B (0x1C1|SSL_ST_CONNECT) #define SSL3_ST_CR_FINISHED_A (0x1D0|SSL_ST_CONNECT) #define SSL3_ST_CR_FINISHED_B (0x1D1|SSL_ST_CONNECT) +#define SSL3_ST_CR_SESSION_TICKET_A (0x1E0|SSL_ST_CONNECT) +#define SSL3_ST_CR_SESSION_TICKET_B (0x1E1|SSL_ST_CONNECT) +#define SSL3_ST_CR_CERT_STATUS_A (0x1F0|SSL_ST_CONNECT) +#define SSL3_ST_CR_CERT_STATUS_B (0x1F1|SSL_ST_CONNECT) /* server */ /* extra state */ #define SSL3_ST_SW_FLUSH (0x100|SSL_ST_ACCEPT) +#ifndef OPENSSL_NO_SCTP +#define DTLS1_SCTP_ST_SW_WRITE_SOCK (0x310|SSL_ST_ACCEPT) +#define DTLS1_SCTP_ST_SR_READ_SOCK (0x320|SSL_ST_ACCEPT) +#endif /* read from client */ /* Do not change the number values, they do matter */ #define SSL3_ST_SR_CLNT_HELLO_A (0x110|SSL_ST_ACCEPT) @@ -549,6 +632,10 @@ typedef struct ssl3_state_st #define SSL3_ST_SR_CERT_VRFY_B (0x1A1|SSL_ST_ACCEPT) #define SSL3_ST_SR_CHANGE_A (0x1B0|SSL_ST_ACCEPT) #define SSL3_ST_SR_CHANGE_B (0x1B1|SSL_ST_ACCEPT) +#ifndef OPENSSL_NO_NEXTPROTONEG +#define SSL3_ST_SR_NEXT_PROTO_A (0x210|SSL_ST_ACCEPT) +#define SSL3_ST_SR_NEXT_PROTO_B (0x211|SSL_ST_ACCEPT) +#endif #define SSL3_ST_SR_FINISHED_A (0x1C0|SSL_ST_ACCEPT) #define SSL3_ST_SR_FINISHED_B (0x1C1|SSL_ST_ACCEPT) /* write to client */ @@ -556,10 +643,15 @@ typedef struct ssl3_state_st #define SSL3_ST_SW_CHANGE_B (0x1D1|SSL_ST_ACCEPT) #define SSL3_ST_SW_FINISHED_A (0x1E0|SSL_ST_ACCEPT) #define SSL3_ST_SW_FINISHED_B (0x1E1|SSL_ST_ACCEPT) +#define SSL3_ST_SW_SESSION_TICKET_A (0x1F0|SSL_ST_ACCEPT) +#define SSL3_ST_SW_SESSION_TICKET_B (0x1F1|SSL_ST_ACCEPT) +#define SSL3_ST_SW_CERT_STATUS_A (0x200|SSL_ST_ACCEPT) +#define SSL3_ST_SW_CERT_STATUS_B (0x201|SSL_ST_ACCEPT) #define SSL3_MT_HELLO_REQUEST 0 #define SSL3_MT_CLIENT_HELLO 1 #define SSL3_MT_SERVER_HELLO 2 +#define SSL3_MT_NEWSESSION_TICKET 4 #define SSL3_MT_CERTIFICATE 11 #define SSL3_MT_SERVER_KEY_EXCHANGE 12 #define SSL3_MT_CERTIFICATE_REQUEST 13 @@ -567,6 +659,10 @@ typedef struct ssl3_state_st #define SSL3_MT_CERTIFICATE_VERIFY 15 #define SSL3_MT_CLIENT_KEY_EXCHANGE 16 #define SSL3_MT_FINISHED 20 +#define SSL3_MT_CERTIFICATE_STATUS 22 +#ifndef OPENSSL_NO_NEXTPROTONEG +#define SSL3_MT_NEXT_PROTO 67 +#endif #define DTLS1_MT_HELLO_VERIFY_REQUEST 3