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[hf seos] Carry when incrementing #3043

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Merged
iceman1001 merged 2 commits into from
Dec 11, 2025
+5 −1
Merged

[hf seos] Carry when incrementing #3043

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b602436
[hf seos] Carry when incrementing
aaronjamt Dec 8, 2025
8a92901
Make PR more readable
aaronjamt Dec 11, 2025
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6 changes: 5 additions & 1 deletion client/src/cmdhfseos.c
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Original file line number Diff line number Diff line change
Expand Up @@ -163,7 +163,11 @@ static int decrypt_cryptogram(uint8_t *key, uint8_t *input, uint8_t *out, int in
}

static void increment_command_wrapper(uint8_t *input, int input_len) {
input[input_len - 1]++; // Increment the last element of the header by 1
// Increment the end of the header by 1
uint8_t* offset = &input[input_len - sizeof(uint32_t)];
uint32_t value = MemBeToUint4byte(offset);
value++;
Uint4byteToMemBe(offset, value);
}

static void padToBlockSize(const uint8_t *input, int *inputSize, int blockSize, uint8_t *output) {
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