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viz-php-lib

Native PHP class for VIZ Keys, Transaction, JsonRPC

Features

• JsonRPC — native socket usage (all API methods, hostname cache, ssl flag, full result flag)
• Keys — private (sign), public (verify), shared, encoded keys support (wif, public encoded, compressed/uncompressed public key in hex representation)
• Transaction — easy workflow, multi-signature support, multi-operations support, execute by JsonRPC, support all 38 operations: transfer, transfer_to_vesting, withdraw_vesting, award, create_invite, etc...
• Classes support PSR-4
• Contains modificated classes for best fit to VIZ Blockchain (all-in-one)
• Native code without additional installations (sry composer, but we need other changes in third-party classes)
• Utils for keys compatibility with Ethereum, Bitcoin addresses
• Utilities with (Voice protocol)[https://github.com/VIZ-Blockchain/Free-Speech-Project/blob/master/specification.md] support: voice_text, voice_publication
• MIT License

Dependencies

One PHP extension from the list:

• GMP (GNU Multiple Precision) — sudo apt-get install libgmp-dev php-gmp
• BCMath — sudo apt-get install php-bcmath

Most hosting providers have it turned on already, but if not found, check your control panel.

Thanks to third-party class developers:

• https://github.com/simplito/bigint-wrapper-php
• https://github.com/simplito/bn-php
• https://github.com/simplito/elliptic-php
• https://github.com/kornrunner/php-keccak

Examples

Some examples have placeholders for private keys or accounts. Change them for successfull test.

Keys: init from hex, encode to wif, get public key from private, get encoded version, verify signature.

JsonRPC: init with endpoint, api method without parameters, change endpoint, get account, turn on all json result, request a non-existent account.

Transaction: init with endpoint and private key in wif, build simple transaction with award operation and execute it.

Init with endpoint and private key in wif, activate queue mode and add 2 operations, end queue and get result array. Execute transaction json from array. Add additional signature for multi-sig example (can be false if canonical signature was not found).

Create new private key, get public key from it, execute transaction with create_invite operation.

Find shared key from two sides. Simple string encrypt and decrypt with AES-256-CBC. Encode and decode memo with viz-js-lib compability structure for encrypted memo.

Generate data and signature for passwordless authentication and check it for domain auth action with active authority.

Make transaction with custom operation.

Make transaction with account create operation.

Make transaction with proposal operations as array (need to use build_ prefix). Approve that proposal with other account active key.

Utils method for post text object to Voice protocol. Method attributes (* - is optional):

Utils method for post publication object to Voice protocol. Method attributes (* - is optional):

Create Voice text object, hide it with Voice Event.

Create Voice text object, check transaction size, split it for add Voice Event.

May VIZ be with you.