Andrew Boyson / crypto

A simple library to support serving https.

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tls/tls-connection.h@19:f22327e8be7b, 2019-10-15 (annotated)

Committer:
andrewboyson
Date:
Tue Oct 15 07:26:15 2019 +0000
Revision:
19:f22327e8be7b
Parent:
17:93feb2a51d58 
Pulled AES128_CBC_SHA1 into its own routines to keep it apart from future work.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
andrewboyson 6:819c17738dc2 1 #include <stdbool.h>
andrewboyson 6:819c17738dc2 2 #include <stdint.h>
andrewboyson 6:819c17738dc2 3
andrewboyson 17:93feb2a51d58 4 #include "tls-defs.h"
andrewboyson 19:f22327e8be7b 5 #include "sha1.h"
andrewboyson 5:ee5489ee1117 6 #include "sha256.h"
andrewboyson 19:f22327e8be7b 7 #include "aes128cbc.h"
andrewboyson 5:ee5489ee1117 8
andrewboyson 5:ee5489ee1117 9 #define DO_WAIT_CLIENT_HELLO 0
andrewboyson 14:03a0b8fd6ddc 10 #define DO_SEND_SERVER_HELLO_NEW 1
andrewboyson 14:03a0b8fd6ddc 11 #define DO_SEND_SERVER_HELLO_RESUME 2
andrewboyson 14:03a0b8fd6ddc 12 #define DO_WAIT_CLIENT_CHANGE 3
andrewboyson 14:03a0b8fd6ddc 13 #define DO_WAIT_DECRYPT_MASTER_SECRET 4
andrewboyson 14:03a0b8fd6ddc 14 #define DO_SEND_SERVER_CHANGE 5
andrewboyson 14:03a0b8fd6ddc 15 #define DO_APPLICATION 6
andrewboyson 14:03a0b8fd6ddc 16 #define DO_SEND_ALERT_ILLEGAL_PARAMETER 7
andrewboyson 14:03a0b8fd6ddc 17 #define DO_SEND_ALERT_INTERNAL_ERROR 8
andrewboyson 5:ee5489ee1117 18
andrewboyson 8:5e66a6b4b38c 19 #define TLS_DEFERRED_CONTENT_SIZE 100
andrewboyson 6:819c17738dc2 20
andrewboyson 5:ee5489ee1117 21 struct TlsConnection
andrewboyson 5:ee5489ee1117 22 {
andrewboyson 5:ee5489ee1117 23 int id; //An id of zero means the record is empty
andrewboyson 5:ee5489ee1117 24 uint32_t lastUsed;
andrewboyson 5:ee5489ee1117 25 int toDo;
andrewboyson 10:e269fd7b9500 26 uint32_t sessionId;
andrewboyson 14:03a0b8fd6ddc 27 bool resume;
andrewboyson 8:5e66a6b4b38c 28 struct Sha256State handshakeSha;
andrewboyson 6:819c17738dc2 29 bool clientEncrypted;
andrewboyson 6:819c17738dc2 30 bool serverEncrypted;
andrewboyson 17:93feb2a51d58 31 uint8_t clientRandom[TLS_LENGTH_RANDOM];
andrewboyson 17:93feb2a51d58 32 uint8_t serverRandom[TLS_LENGTH_RANDOM];
andrewboyson 8:5e66a6b4b38c 33 uint8_t clientHandshakeHash[SHA256_HASH_SIZE];
andrewboyson 8:5e66a6b4b38c 34 uint8_t deferredContent[TLS_DEFERRED_CONTENT_SIZE];
andrewboyson 8:5e66a6b4b38c 35 uint64_t clientSequence;
andrewboyson 8:5e66a6b4b38c 36 uint64_t serverSequence;
andrewboyson 10:e269fd7b9500 37 uint32_t clientPositionInStreamOffset;
andrewboyson 10:e269fd7b9500 38 uint32_t serverPositionInStreamOffset;
andrewboyson 6:819c17738dc2 39
andrewboyson 14:03a0b8fd6ddc 40 int slotPriKeyDecryption;
andrewboyson 19:f22327e8be7b 41 uint8_t clientMacKey [SHA1_HASH_SIZE];
andrewboyson 19:f22327e8be7b 42 uint8_t serverMacKey [SHA1_HASH_SIZE];
andrewboyson 19:f22327e8be7b 43 uint8_t clientWriteKey[AES128CBC_BLOCK_SIZE];
andrewboyson 19:f22327e8be7b 44 uint8_t serverWriteKey[AES128CBC_BLOCK_SIZE];
andrewboyson 5:ee5489ee1117 45 };
andrewboyson 5:ee5489ee1117 46
andrewboyson 8:5e66a6b4b38c 47 extern struct TlsConnection* TlsConnectionGetNext(void);
andrewboyson 8:5e66a6b4b38c 48
andrewboyson 10:e269fd7b9500 49 extern struct TlsConnection* TlsConnectionNew (int id); //Never fails so never returns NULL
andrewboyson 10:e269fd7b9500 50 extern struct TlsConnection* TlsConnectionOrNull(int id);
andrewboyson 10:e269fd7b9500 51 extern void TlsConnectionReset (int id);