AES encrypted characters are not reading properly

Sarath Govind 1

I have an application which does encryption , the library which I used is bcrypt.h . After the encryption, I'll be saving this cipher text to a file. A part of the cipher text look like this

1]Ž�làk¨äéôòÝ´?Ã˜íEçùdª9øÎCÈÎýéqÌH8ÃÇ›}coD#y“¡7”

The problem is that , when I'm reading this cipher text for decryption , the entire cipher text string is not reading properly .
Please suggest me some method for reading this encrypted test

I've tried _wfopen_s() method and ifstream() etc.

The application is written in c++

Xiaopo Yang - MSFT 12,726 Reputation points Microsoft Vendor

2021-07-19T08:40:50.67+00:00

How did you save the cipher text? charset sensitive, binary sensitive,etc. And Using the way by which you save to read.
Also as @Viorel said, maybe prepare a simple project that demonstrates the issue.
Sarath Govind 1 Reputation point

2021-07-19T11:58:04.903+00:00

I have tried both these methods to write the encrypted text(encrypted characters consists of control characters also)

errno_t errCode = _wfopen_s(&fStream, fileLoc, L"r, ccs=UNICODE");

and

std::ofstream file(encPath1, std::ios::out | std::ios::binary);

_wfopen_s() with option 'b' also tried.

for reading I've tried the similar method , but It doesn't read the whole string

2 answers

Viorel 117.3K Reputation points

2021-07-19T07:53:48.697+00:00

Use _wfopen_s and specify "b" for the third (mode) argument (for both of writing and reading procedures).

If still does not work, show more details, or maybe prepare a simple project that demonstrates the issue (on OneDrive, etc.).
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Sarath Govind 1 Reputation point

2021-07-19T11:57:21.41+00:00

I have tried both these methods to write the encrypted text(encrypted characters consists of control characters also)

errno_t errCode = _wfopen_s(&fStream, fileLoc, L"r, ccs=UNICODE");

and

std::ofstream file(encPath1, std::ios::out | std::ios::binary);

_wfopen_s() with option 'b' also tried.

for reading I've tried the similar method , but It doesn't read the whole string
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Sarath Govind 1 Reputation point

2021-07-19T12:00:38.257+00:00

update

tried converting encrypt text to hex . But while reading the hex , string variable doesn't hold the whole text
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Xiaopo Yang - MSFT 12,726 Reputation points Microsoft Vendor

2021-07-21T02:29:58.553+00:00

Have you check the string variable in VS Memory Window?
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AES encrypted characters are not reading properly

2 answers

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