added cipherstream recovery

diff --git a/client/cmdhflist.c b/client/cmdhflist.c
index 1701c13ae8908b55ab2f8fcf851019fdcead0738..64ffed5c6f2c14c322ce1d78d36cd1497a6e8b27 100644 (file)
--- a/client/cmdhflist.c
+++ b/client/cmdhflist.c
@@ -295,6 +295,7 @@ bool DecodeMifareData(uint8_t *cmd, uint8_t cmdsize, bool isResponse, uint8_t *m
                        // check last used key
                        if (mfLastKey) {
                                if (NestedCheckKey(mfLastKey, &AuthData, cmd, cmdsize)) {
                        // check last used key
                        if (mfLastKey) {
                                if (NestedCheckKey(mfLastKey, &AuthData, cmd, cmdsize)) {

+                                       traceCrypto1 = lfsr_recovery64(AuthData.ks2, AuthData.ks3);

                                };
                        }
                        
                                };
                        }
                        


@@ -302,7 +303,7 @@ bool DecodeMifareData(uint8_t *cmd, uint8_t cmdsize, bool isResponse, uint8_t *m
                        if (!traceCrypto1) {
                                for (int defaultKeyCounter = 0; defaultKeyCounter < MifareDefaultKeysSize; defaultKeyCounter++){
                                        if (NestedCheckKey(MifareDefaultKeys[defaultKeyCounter], &AuthData, cmd, cmdsize)) {
                        if (!traceCrypto1) {
                                for (int defaultKeyCounter = 0; defaultKeyCounter < MifareDefaultKeysSize; defaultKeyCounter++){
                                        if (NestedCheckKey(MifareDefaultKeys[defaultKeyCounter], &AuthData, cmd, cmdsize)) {

-                                               
+                                               traceCrypto1 = lfsr_recovery64(AuthData.ks2, AuthData.ks3);

                                                break;
                                        };
                                }
                                                break;
                                        };
                                }


@@ -409,5 +410,11 @@ bool NestedCheckKey(uint64_t key, TAuthData *ad, uint8_t *cmd, uint8_t cmdsize)
        
        crypto1_destroy(pcs);
        
        
        crypto1_destroy(pcs);
        

-       return CheckCrc14443(CRC_14443_A, buf, cmdsize);
+       if(CheckCrc14443(CRC_14443_A, buf, cmdsize)) {
+               AuthData.ks2 = AuthData.ar_enc ^ ar;
+               AuthData.ks3 = AuthData.at_enc ^ at;
+               return true;
+       } else {
+               return false;
+       }

 }
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 }
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