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functions should be static where possible

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This commit is contained in:
Henry Gabryjelski 2024-05-14 20:22:30 -07:00
commit 2757881945
2 changed files with 9 additions and 16 deletions
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17
client/src/cmdlfem4x70.c
View file

@ -440,7 +440,7 @@ static int verify_auth_em4x70(const em4x70_cmd_input_verify_auth_t *opts) {
} }
int CmdEM4x70Info(const char *Cmd) { static int CmdEM4x70Info(const char *Cmd) {
// invoke reading of a EM4x70 tag which has to be on the antenna because // invoke reading of a EM4x70 tag which has to be on the antenna because
// decoding is done by the device (not on client side) // decoding is done by the device (not on client side)
@ -480,7 +480,7 @@ int CmdEM4x70Info(const char *Cmd) {
return result; return result;
} }
int CmdEM4x70Write(const char *Cmd) { static int CmdEM4x70Write(const char *Cmd) {
// write one block/word (16 bits) to the tag at given block address (0-15) // write one block/word (16 bits) to the tag at given block address (0-15)
CLIParserContext *ctx; CLIParserContext *ctx;
@ -532,7 +532,7 @@ int CmdEM4x70Write(const char *Cmd) {
return result; return result;
} }
int CmdEM4x70Brute(const char *Cmd) { static int CmdEM4x70Brute(const char *Cmd) {
// From paper "Dismantling Megamos Crypto", Roel Verdult, Flavio D. Garcia and Barıs¸ Ege. // From paper "Dismantling Megamos Crypto", Roel Verdult, Flavio D. Garcia and Barıs¸ Ege.
// Partial Key-Update Attack (optimized version) // Partial Key-Update Attack (optimized version)
@ -618,7 +618,7 @@ int CmdEM4x70Brute(const char *Cmd) {
return result; return result;
} }
int CmdEM4x70Unlock(const char *Cmd) { static int CmdEM4x70Unlock(const char *Cmd) {
// send pin code to device, unlocking it for writing // send pin code to device, unlocking it for writing
CLIParserContext *ctx; CLIParserContext *ctx;
@ -666,7 +666,7 @@ int CmdEM4x70Unlock(const char *Cmd) {
return result; return result;
} }
int CmdEM4x70Auth(const char *Cmd) { static int CmdEM4x70Auth(const char *Cmd) {
// Authenticate transponder // Authenticate transponder
// Send 56-bit random number + pre-computed f(rnd, k) to transponder. // Send 56-bit random number + pre-computed f(rnd, k) to transponder.
@ -726,7 +726,7 @@ int CmdEM4x70Auth(const char *Cmd) {
return result; return result;
} }
int CmdEM4x70SetPIN(const char *Cmd) { static int CmdEM4x70SetPIN(const char *Cmd) {
CLIParserContext *ctx; CLIParserContext *ctx;
CLIParserInit(&ctx, "lf em 4x70 setpin", CLIParserInit(&ctx, "lf em 4x70 setpin",
"Write new PIN\n", "Write new PIN\n",
@ -771,7 +771,7 @@ int CmdEM4x70SetPIN(const char *Cmd) {
return result; return result;
} }
int CmdEM4x70SetKey(const char *Cmd) { static int CmdEM4x70SetKey(const char *Cmd) {
CLIParserContext *ctx; CLIParserContext *ctx;
CLIParserInit(&ctx, "lf em 4x70 setkey", CLIParserInit(&ctx, "lf em 4x70 setkey",
"Write new 96-bit key to tag\n", "Write new 96-bit key to tag\n",
@ -969,7 +969,7 @@ static int CmdEM4x70Recover_ParseArgs(const char *Cmd, em4x70_cmd_input_recover_
return result; return result;
} }
int CmdEM4x70Recover(const char *Cmd) { static int CmdEM4x70Recover(const char *Cmd) {
// From paper "Dismantling Megamos Crypto", Roel Verdult, Flavio D. Garcia and Barıs¸ Ege. // From paper "Dismantling Megamos Crypto", Roel Verdult, Flavio D. Garcia and Barıs¸ Ege.
// Partial Key-Update Attack -- final 48 bits (after optimized version gets k95..k48) // Partial Key-Update Attack -- final 48 bits (after optimized version gets k95..k48)
em4x70_recovery_data_t recover_ctx = {0}; em4x70_recovery_data_t recover_ctx = {0};
@ -1552,6 +1552,7 @@ static int CmdHelp(const char *Cmd) {
return PM3_SUCCESS; return PM3_SUCCESS;
} }
///////////////////////////////////////////////////////////////////////////////
// Only two functions need to be non-static: // Only two functions need to be non-static:
// * CmdLFEM4X70() // * CmdLFEM4X70()
// * detect_4x70_block() // * detect_4x70_block()

8
client/src/cmdlfem4x70.h
View file

@ -24,14 +24,6 @@
#define TIMEOUT 2000 #define TIMEOUT 2000
int CmdLFEM4X70(const char *Cmd); int CmdLFEM4X70(const char *Cmd);
int CmdEM4x70Info(const char *Cmd);
int CmdEM4x70Write(const char *Cmd);
int CmdEM4x70Brute(const char *Cmd);
int CmdEM4x70Unlock(const char *Cmd);
int CmdEM4x70Auth(const char *Cmd);
int CmdEM4x70SetPIN(const char *Cmd);
int CmdEM4x70SetKey(const char *Cmd);
int CmdEM4x70Recover(const char *Cmd);
// for `lf search`: // for `lf search`:
bool detect_4x70_block(void); bool detect_4x70_block(void);