crypto-algorithms | Basic implementations of standard cryptography algorithms | Cryptography library

by B-Con C Version: Current License: No License

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kandi X-RAY | crypto-algorithms Summary

crypto-algorithms is a C library typically used in Security, Cryptography applications. crypto-algorithms has no bugs, it has no vulnerabilities and it has medium support. You can download it from GitHub.

about --- these are basic implementations of standard cryptography algorithms, written by brad conte (brad@bradconte.com) from scratch and without any cross-licensing. they exist to provide publically accessible, restriction-free implementations of popular cryptographic algorithms, like aes and sha-1. these are primarily intended for educational and pragmatic purposes (such as comparing a specification to actual implementation code, or for building an internal application that computes test vectors for a product). the algorithms have been tested against standard test vectors. this code is released into the public domain free of any restrictions. the author requests acknowledgement if the code is used, but does not require it. this code is provided free of any liability and without any

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crypto-algorithms has a medium active ecosystem.

It has 1571 star(s) with 641 fork(s). There are 81 watchers for this library.

It had no major release in the last 6 months.

There are 14 open issues and 1 have been closed. On average issues are closed in 786 days. There are 15 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of crypto-algorithms is current.

Quality

crypto-algorithms has no bugs reported.

Security

crypto-algorithms has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

crypto-algorithms does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

crypto-algorithms releases are not available. You will need to build from source code and install.

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crypto-algorithms Examples and Code Snippets

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Community Discussions

Trending Discussions on crypto-algorithms

C - SHA256 Generation does not output the correct hash?

Non-ascii filename for fopen()

QUESTION

C - SHA256 Generation does not output the correct hash?

Asked 2020-Dec-06 at 17:42

I'm trying to generate a hash, but I keep getting different results.

My implementation:

Pizza is great! -> 86b01bb0cf966fec8f4864103538359cf5d9b6387ef710e02413a11dcce2e489

Online generator:

Pizza is great! -> 5f5c21c95db335c9e2cedd132e294102a8af08c1ddf81f41c9d54c421cfca1da

The code I'm using:

I can't use OpenSSL for this project, so I'm using this SHA256 implementation: sha256.c sha256.h

...

ANSWER

Answered 2020-Dec-06 at 17:42

As noted, the difference is between using sizeof(message) and strlen(message).

sizeof declared array (char message[]) includes the null (terminating character with the value 0) at end of string, while strlen does not include the terminating null.

See this program:

Source https://stackoverflow.com/questions/65170599

QUESTION

Non-ascii filename for fopen()

Asked 2018-Nov-10 at 16:36

I need a robust cross-platform solution to read a specific binary file in C. Let's say I want to fopen() such (maybe big) file, allocate a temporary buffer, and then fread() a sequence of bytes to update my SHA1_CTX and finally close my FILE, finalize sha1 and go on. Quite trivial, right?

But, there is one thing I doubt: What if the filename is not ASCII? Let's say I will have:

/Users/me/Projects/my_file.bin
/home/me/файлы/работа/мой_файл.bin
С:\\我的檔案\\我的工作.bin
D:\\Folder\\.bin

Can fopen handle such paths? If not, what can I do? I may write some platform-specific code or look for some cross-platform library, but it is extremely important for my application to be as small as possible, moreover it is written in C, so QT, Boost, etc., are not applicable.

Thanks.

...

ANSWER

Answered 2018-Nov-10 at 15:49

It is operating system specific and file system specific.

You might not know what encoding is used for the file path. The user of your program should know that.

However, in 2018, UTF-8 tend to be used everywhere. In practice, that is not always the case today (specially on Windows).

BTW, different OSes have different restrictions on the file path. On Linux, in principle, you could have a file name containing only a tab and a return character (of course that is very poor taste, and nobody does that in practice; for details read path_resolution(7)). On Windows, that is not allowed.

Can fopen handle such paths?

Yes. The C11 standard (read n1570 for details) does not speak of character encoding.

A different question is what your particular implementation is doing with such paths. The evil is in the details, and they could be ugly.

Source https://stackoverflow.com/questions/53240475

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Vulnerabilities

No vulnerabilities reported

Install crypto-algorithms

You can download it from GitHub.

Support

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