diff options
Diffstat (limited to 'openssl/ssl/ssl3.h')
| -rw-r--r-- | openssl/ssl/ssl3.h | 133 |
1 files changed, 102 insertions, 31 deletions
diff --git a/openssl/ssl/ssl3.h b/openssl/ssl/ssl3.h index a1a19cbfc..baaa89e71 100644 --- a/openssl/ssl/ssl3.h +++ b/openssl/ssl/ssl3.h @@ -123,12 +123,14 @@ #include <openssl/buffer.h> #include <openssl/evp.h> #include <openssl/ssl.h> -#include <openssl/pq_compat.h> #ifdef __cplusplus 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 @@ -160,12 +162,14 @@ extern "C" { #define SSL3_CK_ADH_DES_64_CBC_SHA 0x0300001A #define SSL3_CK_ADH_DES_192_CBC_SHA 0x0300001B -#define SSL3_CK_FZA_DMS_NULL_SHA 0x0300001C -#define SSL3_CK_FZA_DMS_FZA_SHA 0x0300001D -#if 0 /* Because it clashes with KRB5, is never used any more, and is safe - to remove according to David Hopwood <david.hopwood@zetnet.co.uk> - of the ietf-tls list */ -#define SSL3_CK_FZA_DMS_RC4_SHA 0x0300001E +#if 0 + #define SSL3_CK_FZA_DMS_NULL_SHA 0x0300001C + #define SSL3_CK_FZA_DMS_FZA_SHA 0x0300001D + #if 0 /* Because it clashes with KRB5, is never used any more, and is safe + to remove according to David Hopwood <david.hopwood@zetnet.co.uk> + of the ietf-tls list */ + #define SSL3_CK_FZA_DMS_RC4_SHA 0x0300001E + #endif #endif /* VRS Additional Kerberos5 entries @@ -217,9 +221,11 @@ extern "C" { #define SSL3_TXT_ADH_DES_64_CBC_SHA "ADH-DES-CBC-SHA" #define SSL3_TXT_ADH_DES_192_CBC_SHA "ADH-DES-CBC3-SHA" -#define SSL3_TXT_FZA_DMS_NULL_SHA "FZA-NULL-SHA" -#define SSL3_TXT_FZA_DMS_FZA_SHA "FZA-FZA-CBC-SHA" -#define SSL3_TXT_FZA_DMS_RC4_SHA "FZA-RC4-SHA" +#if 0 + #define SSL3_TXT_FZA_DMS_NULL_SHA "FZA-NULL-SHA" + #define SSL3_TXT_FZA_DMS_FZA_SHA "FZA-FZA-CBC-SHA" + #define SSL3_TXT_FZA_DMS_RC4_SHA "FZA-RC4-SHA" +#endif #define SSL3_TXT_KRB5_DES_64_CBC_SHA "KRB5-DES-CBC-SHA" #define SSL3_TXT_KRB5_DES_192_CBC3_SHA "KRB5-DES-CBC3-SHA" @@ -245,23 +251,65 @@ extern "C" { #define SSL3_SESSION_ID_SIZE 32 #define SSL3_RT_HEADER_LENGTH 5 -/* Due to MS stuffing up, this can change.... */ -#if defined(OPENSSL_SYS_WIN16) || \ - (defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN32)) -#define SSL3_RT_MAX_EXTRA (14000) +#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 -#define SSL3_RT_MAX_EXTRA (16384) +# 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 maximum of 20 is used by SHA1, but we reserve for + * future extension for 512-bit hashes. + */ + +#define SSL3_RT_MAX_MD_SIZE 64 + +/* Maximum block size used in all ciphersuites. Currently 16 for AES. + */ + +#define SSL_RT_MAX_CIPHER_BLOCK_SIZE 16 + +#define SSL3_RT_MAX_EXTRA (16384) + +/* Maximum plaintext length: defined by SSL/TLS standards */ #define SSL3_RT_MAX_PLAIN_LENGTH 16384 +/* Maximum compression overhead: defined by SSL/TLS standards */ +#define SSL3_RT_MAX_COMPRESSED_OVERHEAD 1024 + +/* The standards give a maximum encryption overhead of 1024 bytes. + * In practice the value is lower than this. The overhead is the maximum + * number of padding bytes (256) plus the mac size. + */ +#define SSL3_RT_MAX_ENCRYPTED_OVERHEAD (256 + SSL3_RT_MAX_MD_SIZE) + +/* OpenSSL currently only uses a padding length of at most one block so + * the send overhead is smaller. + */ + +#define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \ + (SSL_RT_MAX_CIPHER_BLOCK_SIZE + SSL3_RT_MAX_MD_SIZE) + +/* If compression isn't used don't include the compression overhead */ + #ifdef OPENSSL_NO_COMP -#define SSL3_RT_MAX_COMPRESSED_LENGTH SSL3_RT_MAX_PLAIN_LENGTH +#define SSL3_RT_MAX_COMPRESSED_LENGTH SSL3_RT_MAX_PLAIN_LENGTH #else -#define SSL3_RT_MAX_COMPRESSED_LENGTH (1024+SSL3_RT_MAX_PLAIN_LENGTH) +#define SSL3_RT_MAX_COMPRESSED_LENGTH \ + (SSL3_RT_MAX_PLAIN_LENGTH+SSL3_RT_MAX_COMPRESSED_OVERHEAD) #endif -#define SSL3_RT_MAX_ENCRYPTED_LENGTH (1024+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_RT_MAX_ENCRYPTED_LENGTH \ + (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_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54" #define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52" @@ -300,7 +348,7 @@ typedef struct ssl3_record_st /*rw*/ unsigned char *input; /* where the decode bytes are */ /*r */ unsigned char *comp; /* only used with decompression - malloc()ed */ /*r */ unsigned long epoch; /* epoch number, needed by DTLS1 */ -/*r */ PQ_64BIT seq_num; /* sequence number, needed by DTLS1 */ +/*r */ unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */ } SSL3_RECORD; typedef struct ssl3_buffer_st @@ -323,14 +371,14 @@ 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 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 +#define TLS1_FLAGS_SKIP_CERT_VERIFY 0x0010 typedef struct ssl3_state_st { @@ -338,8 +386,10 @@ 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]; @@ -349,6 +399,9 @@ typedef struct ssl3_state_st int need_empty_fragments; int empty_fragment_done; + /* The value of 'extra' when the buffers were initialized */ + int init_extra; + SSL3_BUFFER rbuf; /* read IO goes into here */ SSL3_BUFFER wbuf; /* write IO goes into here */ @@ -370,9 +423,11 @@ 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; @@ -392,6 +447,14 @@ 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]; @@ -406,7 +469,7 @@ typedef struct ssl3_state_st 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 @@ -433,6 +496,8 @@ 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 @@ -441,6 +506,12 @@ 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; |