mbedtls | open source portable easy to use | Cryptography library

by ARMmbed C Version: v3.1.0 License: Apache-2.0

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | mbedtls Summary

mbedtls is a C library typically used in Security, Cryptography applications. mbedtls has no bugs, it has a Permissive License and it has medium support. However mbedtls has 19 vulnerabilities. You can download it from GitHub.

Mbed TLS is a C library that implements cryptographic primitives, X.509 certificate manipulation and the SSL/TLS and DTLS protocols. Its small code footprint makes it suitable for embedded systems. Mbed TLS includes a reference implementation of the [PSA Cryptography API] #psa-cryptography-api). This is currently a preview for evaluation purposes only.

Support

Quality

Security

License

Reuse

Support

mbedtls has a medium active ecosystem.

It has 3431 star(s) with 1934 fork(s). There are 193 watchers for this library.

It had no major release in the last 12 months.

There are 859 open issues and 1394 have been closed. On average issues are closed in 325 days. There are 206 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of mbedtls is v3.1.0

Quality

mbedtls has 0 bugs and 0 code smells.

Security

mbedtls has 19 vulnerability issues reported (1 critical, 8 high, 10 medium, 0 low).

mbedtls code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

mbedtls is licensed under the Apache-2.0 License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

mbedtls releases are available to install and integrate.

Installation instructions are not available. Examples and code snippets are available.

It has 6910 lines of code, 516 functions and 34 files.

It has medium code complexity. Code complexity directly impacts maintainability of the code.

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mbedtls Key Features

No Key Features are available at this moment for mbedtls.

mbedtls Examples and Code Snippets

No Code Snippets are available at this moment for mbedtls.

Community Discussions

Trending Discussions on mbedtls

SHA256 digest disagrees in Python vs. STM32's built-in HASH device

mbedtls cannot parse valid x509 certificate

mbedtls: How to transfer and load public key as raw bytes

How to fix "#error architecture not supported" when installing pycurl with Python 3.8.2 on macOS 10.15?

CMake and ESP-IDF: Creating custom components

What determines the cipher suite?

Linphone-sdk desktop build failed: error: missing binary operator before token "("

Different AES-256 encryption output between mbedtls and openssl

trying to build mbedtls on windows using cmake

How to get a UTC timestamp in OP-TEE Trusted Application (TA) in datetime format?

QUESTION

SHA256 digest disagrees in Python vs. STM32's built-in HASH device

Asked 2022-Jan-21 at 22:09

Problem:

I am trying to compute the SHA256 digests of single blocks (512 bit) on an STM32L552ZE-Q using mbedTLS the HASH device built into the STM32 I am using. Unfortunately, the digest doesn't agree with that of Python's SHA256 implementation, even for a single block of all-zeros.

Sample output:

Python: f5a5fd42d16a20302798ef6ed309979b43003d2320d9f0e8ea9831a92759fb4b
STM32, data-type= 1 bit: B20941D6177356919BCDF1F716029D5F53C81932439D59B98F04A5EE0E192A25
STM32, data-type != 1 bit 037D6DFB3A369A41E01100FDD53C35EE3FB69DDEC5830D61E1138D066A4C2285

Above results are very confusing. The STM32 reference manual for my MCU specifies that the HASH device operates on 32 bit words in big-endian and that messages need to account for that by specifying the data type to be 1, 8, 16 or 32 bit. Setting these values causes the bits to be reordered, though in my mind the ordering should NOT have an impact for an all-0 block because any permuation of a sequence of 64 0's is again just 64 0's. I clearly misunderstand something, as changing the data type (i.e. the reordering) causes the hash to change.

Python code:

...

ANSWER

Answered 2022-Jan-21 at 22:09

Turns out that the problem was caused by me being sloppy and writing memset(obuf, 1, sizeof(ibuf)); instead of memset(obuf, 1, sizeof(obuf));. This caused the memset to overwrite part of the input buffer to contain 256 1-bits. This also explains why the reordering feature of the STM32 caused the output to change...

Source https://stackoverflow.com/questions/70794128

QUESTION

mbedtls cannot parse valid x509 certificate

Asked 2022-Jan-11 at 18:40

I have the following certificate:

...

ANSWER

Answered 2022-Jan-11 at 18:40

Initially, the PEM format certificate string was parsed with the following code:

Source https://stackoverflow.com/questions/70670070

QUESTION

mbedtls: How to transfer and load public key as raw bytes

Asked 2022-Jan-11 at 10:35

I want to use a public/private key pair (ECDSA using secp256r1 curve) to sign commands sent to an embedded device via BLE, and verify them on the device. This means sending the public key to the embedded device (during registration) and storing the public key on the device. When a command is received by the device, the public key is used to verify the signature with mbedtls.

To keep things simple and efficient, I thought it would be best to send and store the uncompressed 64 byte data from the public key (i.e. x and y co-ordinates).

I can generate a key pair and extract the 64 bytes of the public key in my Android app, and send these to the device using BLE.

However, I haven't found a good way to use this public key data to verify signatures with embedtls - i.e. to load the raw 64 bytes into a suitable mbedtls_ecp_keypair struct.

I have been able to do it with "mbedtls_ecp_point_read_string" as follows (error checking removed for brevity):

...

ANSWER

Answered 2022-Jan-11 at 10:35

I faced the exact same problem today. Eventually figured out that mbedtls_ecp_point_read_binary expects binary data in uncompressed public key format, i.e 0x04 followed by X followed by Y.

Source https://stackoverflow.com/questions/70660924

QUESTION

How to fix "#error architecture not supported" when installing pycurl with Python 3.8.2 on macOS 10.15?

Asked 2021-Nov-23 at 17:48

I am trying to install pycurl 7.44.1 and it fails with a

#error architecture not supported

message. Here is what I have:

Python 3.8.2
libcurl 7.64.1
macOS 10.15.7 (Catalina)

...

ANSWER

Answered 2021-Nov-23 at 17:48

This seems to have fixed the unsupported architecture and openssl issue now:

Source https://stackoverflow.com/questions/70074054

QUESTION

CMake and ESP-IDF: Creating custom components

Asked 2021-Nov-18 at 11:27

Framework:

ESP-IDF v4.3.1 - Eclipse Plugin

Project with 1 active component (my plan is to add ble scanning, mqtt messaging and wifi access)

...

ANSWER

Answered 2021-Nov-18 at 11:27

You have a naming conflict. You're trying to create a custom component named mqtt which requires the system component named mqtt and you expect the build system to figure it out. That's just asking for trouble :)

Name your component myproject-mqtt or something. Watch out for similar problems with your components wifi and ble.

Source https://stackoverflow.com/questions/70011677

QUESTION

What determines the cipher suite?

Asked 2021-Oct-18 at 12:19

I am using mbedtls on my TLS application. I've a question about the cipher suites. When I debug my process, I get below lines from server side:

...

ANSWER

Answered 2021-Oct-18 at 12:19

What is the reason for selecting this CHACHA20-POLY1305 cipher

The ciphers supported by the server and by the client, including their preferences. Thus it depends on client and server configurations and on their TLS stacks.

How can I change my chipher suite to TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256?

The RSA in the currently chosen cipher suite means that an RSA certificate was used for authentication. The ECDSA in the cipher you want means that the server needs to use a ECDSA certificate instead, i.e. you cannot achieve this with an RSA certificate.

Some servers can use both a RSA and ECDSA certificate in which case the choice of certificate depends again on client and server configuration regarding supported ciphers, preference etc.

Source https://stackoverflow.com/questions/69612716

QUESTION

Linphone-sdk desktop build failed: error: missing binary operator before token "("

Asked 2021-Sep-13 at 04:56

I followed the guide in the page linphone-sdk and also run these with the MSYS2 MSYS command in Windows 10:

...

ANSWER

Answered 2021-Sep-13 at 04:56

When I configured my environment according to the https://gitlab.linphone.org/BC/public/linphone-sdk/ page and used the Developer Command Prompt for VS 2017 the build seems to go through.

Source https://stackoverflow.com/questions/68846394

QUESTION

Different AES-256 encryption output between mbedtls and openssl

Asked 2021-Sep-13 at 01:27

I'm working on an application that needs to decrypt a file by mbedtls which is encrypted by openssl. Currently, the decryption is not working. After investigation I've found that I cannot create the same encrypted file by using the two frameworks. What is the difference between the two encryption approaches?

Openssl:

...

ANSWER

Answered 2021-Sep-13 at 01:27

The following openssl command produces the same result as your mbedtls script:

Source https://stackoverflow.com/questions/69142014

QUESTION

trying to build mbedtls on windows using cmake

Asked 2021-Aug-20 at 22:33

I am using cmake to try to build mbedtls. I got the .zip from github, un-zipped it, then I "cd"ed into the directory of mbedtls.

I get errors like these, no matter what subdirectory/directory im in i can not build it successfully. the cmake command: cmake Visual Studio 10 .

...

ANSWER

Answered 2021-Aug-20 at 20:44

Get a release rather than a snapshot of the development branch.

Alternatively, in the 3.0+ development branch, according to the readme:

The source code of Mbed TLS includes some files that are automatically generated by scripts and whose content depends only on the Mbed TLS source, not on the platform or on the library configuration. These files are not included in the development branch of Mbed TLS, but the generated files are included in official releases. (…)

Before running cmake,

On Windows, run scripts\make_generated_files.bat to generate all the configuration-independent files.

This requires perl, python and a C compiler. You may need to set the CC environment variable to the path to cl.exe from Visual Studio.

Source https://stackoverflow.com/questions/68539371

QUESTION

How to get a UTC timestamp in OP-TEE Trusted Application (TA) in datetime format?

Asked 2021-Jul-27 at 16:10

Disclaimer: It took me a solid 4-5 hours of looking for an answer and after figuring it out I decided to post it here for people in the same place.

OP-TEE is quite a good environment to develop TAs and CAs, however, there is no straightforward method of acquiring a datetime formatted properly. There is no struct tm either. Therefore, it made me wonder how do I get a datetime format in OP-TEE TAs?

What I spent a long time trying was to utilize the already supported mbedTLS libraries which, for a newcomer, would seem like they do support getting datetime format. After all, they do have gmtime which is supposed to return this value.

However, unfortunately, the gmtime and relevant functions have no implementation for the platform OP-TEE on ARMv8. That's a pretty tough luck.

So how do you get UTC time in an OP-TEE TA?

...

ANSWER

Answered 2021-Jul-27 at 16:10

All OP-TEE development for ARMv8 is done using C. However, it lacks major libc support. Practically, it has very little libraries (e.g. string.h) which are skimmed down versions from the original libc corresponding libraries.

With that, the provided in the OP-TEE contains nothing but a typedef for time_t and that's it.

The problem can be broken down to two sections:

How do you get the epochs since 1970 Jan 1st 00:00:00?

This is an interesting problem, and while the straight forward solution is to simply do this:

Source https://stackoverflow.com/questions/68544061

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install mbedtls

You can download it from GitHub.

Support

Documentation for the Mbed TLS interfaces in the default library configuration is available as part of the [Mbed TLS documentation](https://tls.mbed.org/api/).

Find more information at: