https://github.com/core-lib/cryptogram

Structured object sign and verify framework
https://github.com/core-lib/cryptogram

Last synced: about 1 year ago
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Structured object sign and verify framework

• Host: GitHub
• URL: https://github.com/core-lib/cryptogram
• Owner: core-lib
• License: apache-2.0
• Created: 2018-10-17T09:59:38.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2020-10-13T10:27:36.000Z (over 5 years ago)
• Last Synced: 2025-01-05T01:42:49.991Z (over 1 year ago)
• Language: Java
• Homepage:
• Size: 36.1 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# cryptogram [![](https://www.jitpack.io/v/core-lib/cryptogram.svg)](https://www.jitpack.io/#core-lib/cryptogram)

## Installation

```xml

    

        jitpack.io

        https://jitpack.io

    

    com.github.core-lib

    cryptogram

    1.0.0

    commons-codec

    commons-codec

    1.11

```

## Usage

```java

public class Testing {

    @Test

    public void test() throws Exception {

        Codec signCodec = new HexCodec();

        Codec keyCodec = new PlainCodec();

        StringifyProvider stringifyProvider = new DefaultStringifyProvider();

        SignatureProvider signatureProvider = new HMACSHA256SignatureProvider();

        VerificationProvider verificationProvider = new HMACSHA256VerificationProvider();

        Cryptography cryptography = new Cryptography(

                signCodec,

                keyCodec,

                stringifyProvider,

                signatureProvider,

                verificationProvider

        );

        String secretKey = "io.codex.cryptogram";

        Map param = new HashMap();

        param.put("username", "codex");

        param.put("password", "codex");

        {

            // HmacSHA256("{password=codex&username=codex}", "io.codex.cryptogram")

            String signature = cryptography.sign(param, secretKey);

            boolean verified = cryptography.verify(param, signature, secretKey);

            assert verified : "A serious bug";

        }

        {

            // HmacSHA256("POST /login?{password=codex&username=codex}&timestamp=1539851150142", "io.codex.cryptogram")

            long timestamp = 1539851150142L;

            String signature = cryptography.sign(param, "POST /login?", "&timestamp=" + timestamp, secretKey);

            boolean verified = cryptography.verify(param, "POST /login?", "&timestamp=" + timestamp, signature, secretKey);

            assert verified : "A serious bug";

        }

    }

}

```