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    90 tripledes bouncycastle công việc được tìm thấy, giá theo USD

    I am unable to build my visual studio project due to dependencies or components version conflicting, it is hybrid app project us...build my visual studio project due to dependencies or components version conflicting, it is hybrid app project using mono android, nuget and barcode scanner components.. While trying to build following errors shows... package iTextSharp 5.5.13.3 is not compatible with monoandroid90. Package iTextSharp 5.5.13.3 supports net (.NetFramwork, Version=v0.0) Package BouncyCastle 1.8.9 is not compatible with monoandroid90. Package BouncyCastle 1.8.9 supports : net (.NetFramework, Version=v0.0) we need to fix all the errors and should able to build project. Only through Remote access TeamViewer only. cost for this job and method of payment adjustable f...

    $12 (Avg Bid)
    $12 Giá đặt trung bình
    2 lượt đặt giá

    I need a working implementation of the below that can run on a mac including setup instructions. It takes a string input and outputs a hash public boolean generateAndSaveUserKey(String fromUserPassword) { try { //PBKDFc2-sha256, rounds=100000, salt=584695274yt3 PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(new SHA256Digest()); (("UTF-8"), "584695274yt3".getBytes("UTF-8"), 100000); byte[] pbkdf2Result = ((KeyParameter) (256)).getKey(); String s = (pbkdf2Result, Base64.NO_WRAP); KeychainStore

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    C# code for RSA/ECB/PKCS1Padding encrypting and decrypting. Code must be ready to build to dll file which will be ready to be attached to MS SQL. Code must be only with System or Microsoft Libraries otherwise with other libraries ready to be linked to MS SQL (BouncyCastle library is isn't). Code must have two functions: EncryptRSA (string plainText, string|byte[] publicKey) returns Base64 encrypted plainText. DecryptRSA (string encryptedText, string|byte[] publicKey) returns plainText as string. Public Key may be in formats attached to this question. 1. PEM 2. Sun RSA public key, 2048 bits - info 3. DER

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    10 lượt đặt giá

    need to convert java to c# class equivalent of implementation of bouncycastle encryption,decryption encryption decryption class is already working in java. now it need to be converted to c# equivalent attached are the 2 files all the functions are to be converted to c# equivalent encryption decryption is used for perfios api implmentation main file to convert is

    $13 / hr (Avg Bid)
    $13 / hr Giá đặt trung bình
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    I need to add my custom attribute while generating Root CA I need small modification in this file.

    $14 (Avg Bid)
    $14 Giá đặt trung bình
    3 lượt đặt giá

    I need to add my custom attribute while generating Root CA I need small modification in this file.

    $12 (Avg Bid)
    $12 Giá đặt trung bình
    3 lượt đặt giá

    Hi ! I would like to work with a FullStack Developer on an urgent project. A Web Application should be implemented in Java (preferably) or any other language such as C++/ C# (not wordpress, joomla etc). For the security part you can use libraries e.g. for Java (shiro, owasp security framework, jguard, bouncycastle), for .Net (.NET Framework) etc. Together with the code, I will need 2-3 pages of explanation of work and another word file with screenshots of the app. Also a video of using it would be great. Analytical details will be given in a doc in chat. Also I will send you some code that may be useful. Deadline: 23/24 - 09 - 2022

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    40 lượt đặt giá

    Hi ! I would like to work with a FullStack Developer on an urgent project. A Web Application should be implemented in Java (preferably) or any other language such as C++/ C# (not wordpress, joomla etc). For the security part you can use libraries e.g. for Java (shiro, owasp security framework, jguard, bouncycastle), for .Net (.NET Framework) etc. Together with the code, I will need 2-3 pages of explanation of work and another word file with screenshots of the app. Also a video of using it would be great. Analytical details will be given in a doc in chat. Also I will send you some code that may be useful. Deadline: 23/24 - 09 - 2022

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    HTTP TLS Dialer Đã kết thúc left

    i would like to Create HTTP Dialer with TLS 1.3 Using BouncyCastle 1-Send Connect to host With Proxy Using protocol TLS 1.3 2-After complete handshake Return with (TCPClient & Stream) Used for this Connect Request 3-Dialer should be Coded in c# #Sample of Project available if you want modify or make it work

    $26 (Avg Bid)
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    I need to create a public / private key pair using EC curve:secp256r1. I am using the BouncyCastle crypto library. The attached code works fine to get the private key. But, I am not sure how to convert it to a string format. Should I convert to hex? Integer? I am also not sure if I need to use "serialized". I need both the public and private keys in a string format. Code is attached. I will pay up to $50 for the answer. Code snippet below. ------------------------------------------------------------------------------- try { ECKeyPairGenerator gen = new ECKeyPairGenerator(); SecureRandom secureRandom = new SecureRandom(); X9ECParameters secnamecurves = ("secp256r1"); ECDomainParameters ecParams = new ECDomainParameters(()

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    Help creating ECC Encryption Đã kết thúc left

    I am trying to implement an Encryption / Decryption system within my Android application. But so far its going no where. There is a lot of deprecated methodes and documentation to start with. I maybe say it simple but I want a secure and simple method to encrypt and decrypt text messages and files(Photos). I prefer BouncyCastle library if its possible. This is what I come up with. ECDSA SECG - SEC 2 or Brainpool For ECIES I want to use P-521 elliptic curve for the public-key calculations and PBKDF2 for KDF function and AES-GCM for symmetric cipher and HMAC-SHA512 for MAC algorithm. If you know a secure method please let me know.

    $140 (Avg Bid)
    $140 Giá đặt trung bình
    3 lượt đặt giá

    I am trying to implement an Encryption / Decryption system within my Android application. But so far its going no where. There is a lot of deprecated methodes and documentation to start with. I maybe say it simple but I want a secure and simple method to encrypt and decrypt text messages and files(Photos). I prefer BouncyCastle library if its possible. This is what I come up with. ECDSA SECG - SEC 2 or Brainpool For ECIES I want to use P-521 elliptic curve for the public-key calculations and PBKDF2 for KDF function and AES-GCM for symmetric cipher and HMAC-SHA512 for MAC algorithm. If you know a secure method please let me know.

    $40 (Avg Bid)
    $40 Giá đặt trung bình
    1 lượt đặt giá

    I am trying to implement an Encryption / Decryption system within my Android application. But so far its going no where. There is a lot of deprecated methodes and documentation to start with. I maybe say it simple but I want a secure and simple method to encrypt and decrypt text messages and files(Photos). I prefer BouncyCastle library if its possible. This is what I come up with. ECDSA SECG - SEC 2 or Brainpool For ECIES I want to use P-521 elliptic curve for the public-key calculations and PBKDF2 for KDF function and AES-GCM for symmetric cipher and HMAC-SHA512 for MAC algorithm. If you know a secure method please let me know.

    $188 (Avg Bid)
    $188 Giá đặt trung bình
    2 lượt đặt giá

    I am trying to implement an Encryption / Decryption system within my Android application. But so far its going no where. There is a lot of deprecated methodes and documentation to start with. I maybe say it simple but I want a secure and simple method to encrypt and decrypt text messages and files(Photos). I prefer BouncyCastle library if its possible. This is what I come up with. ECDSA SECG - SEC 2 or Brainpool For ECIES I want to use P-521 elliptic curve for the public-key calculations and PBKDF2 for KDF function and AES-GCM for symmetric cipher and HMAC-SHA512 for MAC algorithm. If you know a secure method please let me know.

    $202 (Avg Bid)
    $202 Giá đặt trung bình
    2 lượt đặt giá

    I am trying to implement an Encryption / Decryption system within my Android application. But so far its going no where. There is a lot of deprecated methodes and documentation to start with. I maybe say it simple but I want a secure and simple method to encrypt and decrypt text messages and files(Photos). I prefer BouncyCastle library if its possible. This is what I come up with. ECDSA SECG - SEC 2 or Brainpool For ECIES I want to use P-521 elliptic curve for the public-key calculations and PBKDF2 for KDF function and AES-GCM for symmetric cipher and HMAC-SHA512 for MAC algorithm. If you know a secure method please let me know.

    $30 - $250
    $30 - $250
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    document tracking system Đã kết thúc left

    ...manager should be able to see (read) all the names who declared that they have read that document in clear text. The manager should also be able to list the declared names without any doubt that the person has declared by himself. No employees will be able to deny they have read that document once they declared they have read it. • Implement your proposal by programming in Java with the given BouncyCastle Java security/cryptography software development packages in the lectures, or in Python, C/C++, and any other language with a suitable cryptographic software package. Demonstrate your application working and behaving as above described. You may consider using one or any combinations of techniques such as hash function, public key encryption, digital signature, public key cer...

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    I would like code/program that can create following: 1. RSA key pair (2048) use[sig] alg=RS256. 2. Provide public key in plain text. 3. Signed JWT with private key. The code must be be in C# (you can use bouncycastle /) nuget packages.

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    Develop a windows-based standalone application to sign the pdf document using the USB Crypto Token (fips-140 level 2 compliant device) the App should pull the document from the rest base web service, sign it, and send it back to web service. Technology : Java Cryptography, BouncyCastle API , iTextPDF, HSM - fips-140 level 2 compliant device

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    Hello. I have a library written in C ++. It uses cryptopp. I am looking for a person who will create a java library equivalent. The library is Diffie Hellman KeyAgreement static-empheral. (Cryptopp:DH2) Requirements: -Java 8-13 -Pure Java, without C ++ -External libraries allowed (bouncycastle etc) All Function this library: void prepare(unsigned char *key); void activate(unsigned char *key); void decrypt(unsigned char *data, int length); void encrypt(unsigned char *data, int length); Give me your price.

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    ...platforms o Real time communication systems (e.g., WebRTC, VoIP, messaging) o Android Enterprise and application publishing through Google Play o Network security, code obfuscation, run-time protection, UEM integration and applied cryptography o Java, Kotlin, Android SDK, AndroidX, Android Jetpack, Multi-threading, Dependency injection, JNI, RxJava/Coroutines, Design Patterns, MVP/MVVM, OpenSSL, Bouncycastle, Protobuf, SQLite, SQLCipher. 3. Full stack web development specialist: Total experience 12+ years, full stack web development experience 7+ years, experience with o Various modern web frameworks (in particular with Angular/AngularJS, Javascript and Typescript) o HTML and CSS; knowledge of at least one CSS preprocessor is mandatory (Sass, Less or Stylus). o Code versioning u...

    $60 / hr (Avg Bid)
    $60 / hr Giá đặt trung bình
    4 lượt đặt giá

    ...platforms o Real time communication systems (e.g., WebRTC, VoIP, messaging) o Android Enterprise and application publishing through Google Play o Network security, code obfuscation, run-time protection, UEM integration and applied cryptography o Java, Kotlin, Android SDK, AndroidX, Android Jetpack, Multi-threading, Dependency injection, JNI, RxJava/Coroutines, Design Patterns, MVP/MVVM, OpenSSL, Bouncycastle, Protobuf, SQLite, SQLCipher. 3. Full stack web development specialist: Total experience 12+ years, full stack web development experience 7+ years, experience with o Various modern web frameworks (in particular with Angular/AngularJS, Javascript and Typescript) o HTML and CSS; knowledge of at least one CSS preprocessor is mandatory (Sass, Less or Stylus). o Code versioning u...

    $30 - $100 / hr
    Nổi bật Gấp Niêm phong NDA
    $30 - $100 / hr
    9 lượt đặt giá

    ...application here: but it needs to be Core 2.0 compliant (I don't know if the above linked solution is). Furthermore I need to encrypt arbitrarily long text so I don't know if AES will suffice. If interested in this project please respond with what kind of encryption method e.g. AES, TripleDES, etc. you think would be suitable for arbitrary length text encryption with good security vs. encryption speed. It will probably take me a few days to choose someone for the project and it will depend on mentioning an encryption algorithm (so that I know the project description has been read). Product should be a ASP Core C# form with buttons and textbox's for the key, encryption and decryption

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    Project for Chanchal S. Đã kết thúc left

    Hi Chanchal S., i need someone to do some coding to convert a file that I have into a specific format and deliver it to another drive. It looks like the person who initially set it up used bouncycastle. Price to be discussed when more detail has been discussed. the budget below is not a true budget expectation.

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    ...com/Articles/93301/Implementing-a-Multithreaded-HTTP-HTTPS-Debugging This proxy server already works, but I need the following features added to it: 1. Automatically create the necessary self certified security certificate using certenroll and add it to the ROOT certificate store (do not use or bouncycastle) 2. Automatically create self certified security certificates using certenroll for every website that the user of the proxy visits (do not use or bouncycastle) 3. The result of 1+2 working will be that HTTPS websites do not display any certificate errors in the browser. 4. Add the ability to easily add/modify/delete the request and response headers for a given URL match 5. Recognise the content type an un-gzip if necessary 6. Add the ability to easily modify the

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    Your task will be to consult us on: - writing PEM files from EC keys - parse EC keys from PEM files - creating certificates via a self managed CA - help us on understanding EC keys and its cryptography, by voice calls and we share us our queries to discuss Required skills: - at least 5 years of hands on experience with real projects on Java Security with RSA and EC keys - Java BouncyCastle lib usage - Java security handling with native Java libs - Java expertise to develop also the explained stuff - JDK8 Test task: - we will share you a simple test task to check your knowledge on understanding what we need from you. The test tasks takes less than 1h if you have experience in the requested matter. This project is wrong for you: - if you have experience in only have experience in...

    $28 / hr (Avg Bid)
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    WS-SECURITY SOAP API Client Đã kết thúc left

    We need the development of a client code to consume a Web Service that uses WS-Security and Asymmetric Binding. We have the following: -wsdl -xsd -sample meessage The connectivity uses WS-SECURITY several security features like: - encryption of usernametoken element with TripleDES - binarysecuritytokens - signing of the body with certificate We need the client to read from a mysql database and send the messages overtime is run. We plan to use a scheduler. You can use JAVA, .NET, PHP or Python (We already tried PHP and Python and they don't support some features, but if you can manage to get them working is ok).

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    I need an android app where you enter an ECDSA Secp256k1 private key and use it to sign a string. Maybe using bouncycastle library. The signature should be verifiable in php, using: $data='teststring'; $pkey=openssl_pkey_get_public($public_key); $res=openssl_verify($data,$signature,$pkey,OPENSSL_ALGO_SHA256); Example public/private key pair: -----BEGIN PUBLIC KEY----- MFYwEAYHKoZIzj0CAQYFK4EEAAoDQgAEPfs0WCAFryKbEAOU5ScUqMm9iFmDEMi1 h2iEG5f3D/y+SrT3Q2pwyIXApphW82nZTs0wv9vzghqjA0zrsbIVJQ== -----END PUBLIC KEY----- -----BEGIN EC PRIVATE KEY----- MIIBCwIBAQQgJ6TxAzr3IXM5u5M16+smwl/oDSpe3ycrWv7MgPfUyvqggeMwgeAC AQEwLAYHKoZIzj0BAQIhAP////////////////////////////////////7///wv MEQEIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABCAAAAAAAAAAAAAA AAAA...

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    ...they have read that document in clear text. The manager should also be able to list the declared names without any doubt that the person has declared by himself. No employees will be able to deny they have read that document once they declared they have read it. • Implement your proposal by programming in Java with the given security/cryptography software development packages which are Java BouncyCastle cryptographic package Demonstrate your application working and behaving as above described. • Write a report that is no more than 2000 words to describe your propose. As most reports, it should include sections/parts such as introduction, objectives, explanations and reasoning, security and/or performance analysis, results, further improvement, and conclusion/summary...

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    string publicKey = "-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoSq5P+llMSIxWSxhZcDZ f70fXrm/pzVgOQs725frxWPZkSgSHd6Y6fckr0Q4Bokn1bpgLKR9p0BuPcyAsOaF whStUNgMcRtgKQ/JhlORZSb3Mx7Z... (true, asymmetricKeyParameter); string de = ((bytes, 0, )); } finally { ((IDisposable)stringReader).Dispose(); } return ((bytes, 0, )); } i use BouncyCastle library for this function. I want make decryt function c# and convert it to php. I need in 1 - 2 days if you can't finish job 1-2 day please don't bid to this project. Thank you

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    Gấp
    $120 Giá đặt trung bình
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    I looking for Expert in OpenSSL/TLS, Java/SpringBoot/MongoDB to build my own Certificate Authority Server app Based Java BouncyCastle lib. Best regards.

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    I looking for MongoDB/Java/Spring/REST API /angularJS/BouncyCastle lib developer to build Time Stamp Authority Software. Best regards,

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    I need someone that implemented before cryptographic scheme with bilinear maps and use library as JPBC or BouncyCastle. Also I need him to now very good Cryptography for some explanation of that scheme.

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    Hire a Java Developer Đã kết thúc left

    A java program that encrypts, decrypts and generates keys using bouncycastle or any other PGP code that I can drop into an Android Studio project. I mention bouncy castles because most of the work is already done. I will need TextBoxes that display the data. I would like to show front end I already have.

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    Write some Software Đã kết thúc left

    ...E3DES(p) = EDES(k1,DDES(k2,EDES(k1, p))) Here, p is the plaintext to encrypt, EDES is the usual DES encryption algorithm and DDES is the DES decryption algorithm. This strategy doubles the number of bits in the key, at the expense of performing three times as many calculations. This approach was shown to offer only the security of a 57-bit key rather than 112 bits as you might expect.) The TripleDES decryption algorithm is just the reverse: D3DES(c) = DDES(k1,EDES(k2,DDES(k1, c))) For this part of the project, implement a class called TripleSDES that provides the following methods and calculates the TripleSDES encryption. public static byte[] Encrypt( byte[] rawkey1, byte[] rawkey2, byte[] plaintext ) public static byte[] Decrypt( byte[] rawkey1, byte[] rawkey2, byte[] c...

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    Writing a code Đã kết thúc left

    Encryption Decryption program Write a program in any language you wish that accepts plaintext, a password (either through prompting the user or on the command line), and whether to encrypt...works by encrypting something with one run of the program and decrypting the resulting ciphertext in a second run of the program. Submit the screenshots and your source code when your program is complete. Hints: Do not attempt to implement AES on your own. Instead, use the libraries that come with almost every programming language. For example, Java has the Java Cryptography Extensions or the BouncyCastle library, both of which are freely available. Do not use the programming language to simply call the OpenSSL command-line programs. Some languages have bindings to OpenSSL, which are fine...

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    I need a small software written in Java and using BouncyCastle library (). The application can be in CLI or in a very simple GUI interface. It should have basically 2 functions: 1 - Sign a file: In this option the user should select a digital certificate in PKCS#12 format (using pfx or p12 extension) and any file in the system. After validate the certificate (explained below) the application will create a digital signature of the selected file and save it on a second file with the same name but with a p7s extension and using CMS/PKCS#7 format. 2 - Check a signature: The user will select the signed file, the p7s file related and the certificate. After validate the certificate (explained below), it should check if the signature is valid. Certificate

    $146 (Avg Bid)
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    ...Unique Change Assembly Information Custom Encryption Works with all Operating System (32/64) Bypass Proactives KIS/Scanner Bypass Firewall Bypass UAC Custom Process Name Registry Persistence Multiple Stubs for long FUD Time File Cloner powerful RunPE Install [ Temp ] Install [AppData ] Junk Code Exe spoof, change from EXE to jpg - png - vlc etc etc Encryption : DES PolyDEs TripleDES Poly3DES AES ployAES RC4 RC2 PolyRC2 Cloud polyCloud polyBaby polyRev XOR Stairs polyStairs DEX polyDEX Symentric polySymentric RijNdael important : 1 ) USG generator Unique stub each different from another stub 2 ) not use public source codes 3 ) give me the source codes after complete language needed : Delphi 2010 / ASM or C/C+++ ASM ...

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    ...signing and decryption operations need to be done by using secure microSD tokens. We will provide the PKCS#11 API of secure microSD tokens to developers. For Android version, we plan to build the app based on the open source project K-9 mail (). The requirements for Android app: 1. Support S/MIME. It is expected to use the S/MIME functions provided by the BouncyCastle library. 2. Email signing algorithms to be supported: 1) RSA-2048 with SHA1 2) RSA-2048 with SHA256 3. Email encryption/decryption algorithms to be supported: 1) 3DES 2) AES-128 3) AES-256 4. Support secure microSD tokens. The email signing/encryption operations should be done by using secure microSD tokens. We will provide the tokens and the necessary API libraries. 5. Change

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    java code for project Đã kết thúc left

    i want to get the full sourcecode for ecdsa using bouncycastle provider and api and naf

    $10 (Avg Bid)
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    ...Unique Change Assembly Information Custom Encryption Works with all Operating System (32/64) Bypass Proactives KIS/Scanner Bypass Firewall Bypass UAC Custom Process Name Registry Persistence Multiple Stubs for long FUD Time File Cloner powerful RunPE Install [ Temp ] Install [AppData ] Junk Code Exe spoof, change from EXE to jpg - png - vlc etc etc Encryption : DES PolyDEs TripleDES Poly3DES AES ployAES RC4 RC2 PolyRC2 Cloud polyCloud polyBaby polyRev XOR Stairs polyStairs DEX polyDEX Symentric polySymentric RijNdael important : 1 ) USG generator Unique stub each different from another stub 2 ) not use public soruce codes 3 ) give me the soruce codes after complete language needed : Delphi 2010 / ASM or C/C+++ ASM ...

    $965 (Avg Bid)
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    Javacard 3.0.1 Đã kết thúc left

    I have 2 functions (with around 5-10 sub functions all together) in java that need to be converted into javacard 3.0.1. The functions are fully working and tested, each function output is a hash. Functions i have in java are using DES and TripleDES algorithms (the pure implementation, not using crypto library of java or any additional library). However, if it helps - you can modify them to use javacardx crypto library, please note that there are some logical shifts inside the functions and int variables as well. You have to specify in your bid how are you going to convert them. Project budget is 150$. After completion during next 2 weeks freelancer will receive 400$ of bonus. Regards! ONLY SERIOUS FREELANCERS

    $147 (Avg Bid)
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    3 lượt đặt giá

    I have 2 functions (with around 5-10 sub functions all together) in java that need to be converted into javacard 2.2.2. The functions are fully working and tested, each function output is a hash. Functions i have in java are using DES and TripleDES algorithms (the pure implementation, not using crypto library of java or any additional library). However, if it helps - you can modify them to use javacardx crypto library, please note that there are some logical shifts inside the functions and int variables as well. You have to specify in your bid how are you going to convert them into javacard 2.2.2 (or 3.0.1). Project budget is 150$. After completion during next 2 weeks freelancer will receive 200$ of bonus. Regards! ONLY SERIOUS FREELANCERS

    $150 (Avg Bid)
    $150 Giá đặt trung bình
    2 lượt đặt giá

    Hi there, I have 2 functions (with around 5-10 sub functions all together) in java that need to be converted into javacard 2.2.2. The functions are fully working and tested, each function output is a hash. Functions i have in java are using DES and TripleDES algorithms (the pure implementation, not using crypto library of java or any additional library). However, if it helps - you can modify them to use javacardx crypto library, please note that there are some logical shifts inside the functions and int variables as well. You have to specify in your bid how are you going to convert them (int type and 31 bit shifts) into javacard 2.2.2. Project budget is 100-150$. Regards! ONLY SERIOUS FREELANCERS

    $127 (Avg Bid)
    $127 Giá đặt trung bình
    4 lượt đặt giá

    Hi there, I have 2 functions (with around 5-10 sub functions all together) in java that need to be converted into javacard 2.2.2. The functions are fully working and tested, each function output is a hash. Functions i have in java are using DES and TripleDES algorithms (the pure implementation, not using crypto library of java or any additional library). However, if it helps - you can modify them to use javacardx crypto library, please note that there are some logical shifts inside the functions and int variables as well. You have to specify in your bid how are you going to convert them (int type and 31 bit shifts) into javacard 2.2.2. Project budget is 50$. Regards!

    $183 (Avg Bid)
    $183 Giá đặt trung bình
    3 lượt đặt giá

    Hi there, I have 2 functions (with around 5-10 sub functions all together) in c/c++ (mixed code) that needs to be converted into pure java code. That functions are using DES and TripleDES algorithms. Please note that I do NOT NEED java code that implements DES and TripleDES from available crypto library, I need those functions without library implementation as they are in c++ code. The outputs of c/c++ and java should perfectly match. I am attaching screenshot of C++ console test application which implements those 2 functions, I need same in java. Project budget is 12$. Regards!

    $32 (Avg Bid)
    $32 Giá đặt trung bình
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    iOS encryption - ECDH Đã kết thúc left

    The Android operating system includes a customized version of Bouncy Castle and provides a limited set of cryptographic features. The SpongyCastle library, based upon BouncyCastle, can be used to provide additional functionality on Android. A project I developed uses SpongyCastle on Android, creating asymmetrical key pairs that are used for ECDH key exchange, allowing users of Android devices to send end-to-end encrypted messages to each other. We are using the curve secp256k1 on Android, and on iOS. iPhone devices do not allow us to use the same cryptographic libraries, so we need assistance from an experienced iOS developer who can develop code for the iPhone so that our iOS app can create ECDH key pairs using the curve secp256k1, and so that messages cre...

    $803 (Avg Bid)
    $803 Giá đặt trung bình
    2 lượt đặt giá

    We wish to update the encryption functionality of PDFtk server to use AES 256 for PDF encryption. It currently implements AES 40/128. Background: We have emailed the PDFtk developers on numerous occasions to make this update and after a year there's been no movement. Recently there's been no reply so we assume the project is end of life. Java PDF...Source code will be worked on via our git repo. Deliverables A Intelllij or (Intellij compatible) project file. Project in archive format. Source code via our Bitbucket git repo. A Windows binary and updated makefile for Windows. Source urls: PDFtk Server: PDFtk Source: ItextPdf: Bouncycastle:

    $721 (Avg Bid)
    $721 Giá đặt trung bình
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    Bouncy castle wrapper Đã kết thúc left

    Need to create class wrappers around the encryption types of BouncyCastle For example, need AES, Rinjdael etc AES=AESFastEngineBlowfishEngine RijndaelEngine, SerpentEngine RC4Engine Salsa20Engine ChaChaEngine Create new classes that include initialisation with ParametersAndIV (where appropriate), as well as initialisation given with byte[] for Parameters/IV. Any block encryption Encryption MUST use CBC block chaining, eg: Cipher cipher = ("AES/CBC/PKCS5Padding", bouncyProvider); (Cipher.ENCRYPT_MODE, secretKeySpec, ivParameterSpec); return (inputData); Interface to base your classes on: public abstract class EncryptionSystem { public abstract byte[] encrypt(byte[] inputData); public abstract byte[] encrypt(InputStream

    $20 (Avg Bid)
    $20 Giá đặt trung bình
    1 lượt đặt giá

    Need to create class wrappers around the encryption types of BouncyCastle For example, need AES, Rinjdael etc AES=AESFastEngine BlowfishEngine RijndaelEngine, SerpentEngine RC4Engine Salsa20Engine ChaChaEngine Create new classes that include initialisation with ParametersAndIV (where appropriate), as well as initialisation given with byte[] for Parameters/IV. Any block encryption Encryption MUST use CBC block chaining, eg: Cipher cipher = ("AES/CBC/PKCS5Padding", bouncyProvider); (Cipher.ENCRYPT_MODE, secretKeySpec, ivParameterSpec); return (inputData); Interface to base your classes on: public abstract class EncryptionSystem { public abstract byte[] encrypt(byte[]

    $95 (Avg Bid)
    $95 Giá đặt trung bình
    2 lượt đặt giá

    Need to create class wrappers around the encryption types of BouncyCastle For example, need AES, Rinjdael etc AES=AESFastEngine BlowfishEngine RijndaelEngine, SerpentEngine RC4Engine Salsa20Engine ChaChaEngine Create new classes that include initialisation with ParametersAndIV (where appropriate), as well as initialisation given with byte[] for Parameters/IV. Any block encryption Encryption MUST use CBC block chaining, eg: Cipher cipher = ("AES/CBC/PKCS5Padding", bouncyProvider); (Cipher.ENCRYPT_MODE, secretKeySpec, ivParameterSpec); return (inputData); Interface to base your classes on: public abstract class EncryptionSystem { public abstract byte[] encrypt(byte[]

    $10 - $30
    $10 - $30
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