Muldersoft/SlunkCrypt
Muldersoft/SlunkCrypt
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Slightly improved storage of the padding size.

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This commit is contained in:
LoRd_MuldeR 2020-12-12 03:22:29 +01:00
parent 86af5fa51f
commit 334d828c5b
Signed by: mulder
GPG Key ID: 2B5913365F57E03F
3 changed files with 6 additions and 13 deletions
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11
frontend/src/main.c
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@ -335,7 +335,7 @@ static int encrypt(const char* const passphrase, const CHR* const input_path, co
goto clean_up;
}
SET_NIBBLE(buffer[padding - 1U], padding);
SET_LOWBITS(buffer[padding - 1U], padding - 1U);
if ((status = slunkcrypt_encrypt_inplace(ctx, buffer, padding)) != SLUNKCRYPT_SUCCESS)
{
FPUTS((status == SLUNKCRYPT_ABORTED) ? T("\n\nProcess interrupted!\n\n") : T("\n\nSlunkCrypt error: Failed to encrypt data!\n\n"), stderr);
@ -502,14 +502,7 @@ static int decrypt(const char* const passphrase, const CHR* const input_path, co
goto clean_up;
}
const size_t padding = GET_NIBBLE(buffer[sizeof(uint64_t) - 1U]);
if ((!padding) || (padding > sizeof(uint64_t)))
{
FPRINTF(stderr, T("\n\nPadding error: Erroneous padding length encountered! [0x%02X]\n\n"), (unsigned int)padding);
FPUTS(T("Wrong passphrase or corrupted file?\n\n"), stderr);
goto clean_up;
}
const size_t padding = GET_LOWBITS(buffer[sizeof(uint64_t) - 1U]) + 1U;
if (padding != sizeof(uint64_t))
{
const size_t count = sizeof(uint64_t) - padding;

4
frontend/src/utils.h
View File

@ -21,7 +21,7 @@ uint64_t round_down(const uint64_t value, const uint64_t base);
#define ARRAY_SIZE(X) (sizeof((X)) / sizeof(*(X)))
#define BOUND(MIN,VAL,MAX) (((VAL) < (MIN)) ? (MIN) : (((VAL) > (MAX)) ? (MAX) : (VAL)))
#define GET_NIBBLE(X) ((X) & 0x0F)
#define SET_NIBBLE(X, Y) do { X = ((X) & 0xF0) | ((Y) & 0x0F); } while(0)
#define GET_LOWBITS(X) ((X) & 0x07)
#define SET_LOWBITS(X, Y) do { X = ((X) & 0xF8) | ((Y) & 0x07); } while(0)
#endif

4
mk-profiled.sh
View File

@ -35,8 +35,8 @@ printf "\n"
PASSWRD="$(./frontend/bin/slunkcrypt${SUFFIX} --make-pw)"
./frontend/bin/slunkcrypt${SUFFIX} --self-test
./frontend/bin/slunkcrypt${SUFFIX} --encrypt "${PASSWRD}" /tmp/${TMP_NAME}.dat /tmp/${TMP_NAME}.enc
./frontend/bin/slunkcrypt${SUFFIX} --decrypt "${PASSWRD}" /tmp/${TMP_NAME}.enc /tmp/${TMP_NAME}.out
./frontend/bin/slunkcrypt${SUFFIX} --encrypt ":${PASSWRD}" /tmp/${TMP_NAME}.dat /tmp/${TMP_NAME}.enc
./frontend/bin/slunkcrypt${SUFFIX} --decrypt ":${PASSWRD}" /tmp/${TMP_NAME}.enc /tmp/${TMP_NAME}.out
printf "\033[1;36m\n------------------------------------------------------------------------------\033[0m\n"
printf "\033[1;36mRe-compile\n"