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Работа с guacamole-auth-json, кодирование php-клиентской реализации.

Мне нужно иметь возможность шифровать хэшированный json hmac sha256 с помощью шифра aes-128-cbc. У меня те же входные данные с хэшем, но не удается реализовать шифрование.

Рабочий пример guacamole-auth-json в bash

 #!/bin/bash -e

##
## Encryption/signing key.
##
SECRET_KEY="$1"

##
## The filename of the JSON data being signed and encrypted.
##
JSON_FILENAME="$2"
##

## A null (all zeroes) IV.
##
NULL_IV="00000000000000000000000000000000"

##
## Signs the contents of the given file using the given key. The signature is
## created using HMAC/SHA-256, and is output in binary form to STDOUT, followed
## by the raw contents of the file.
##
## @param KEY
##     The key to use to sign the contents of the given file with HMAC/SHA-256.
##
## @param FILENAME
##     The filename of the file to sign.
##
sign() {

    KEY="$1"
    FILENAME="$2"

    #
    # Write out signature
    #

    openssl dgst                                
        -sha256 -mac HMAC -macopt hexkey:"$KEY" 
        -binary "$FILENAME"

    #
    # Write out file contents
    #

    cat "$FILENAME"

}

##
## Encrypts all data received through STDIN using the provided key. Data is
## encrypted using 128-bit AES in CBC mode (with a null IV). The encrypted
## result is printed to STDOUT encoded with base64.
##
## @param KEY
##     The key to encrypt STDIN with, as a 16-byte (32-digit) hexadecimal
##     value.
##
encrypt() {

    KEY="$1"

    #
    # Encrypt STDIN
    #

    openssl enc -aes-128-cbc -K "$KEY" -iv "$NULL_IV" -nosalt -a

}

#
# Sign and encrypt file using secret key
#
sign "$SECRET_KEY" "$JSON_FILENAME" | encrypt "$SECRET_KEY"
 

Мои другие данные, создающие реализацию php

 $auth_json = "{n";
$auth_json = $auth_json . "    "username" : "",n";
$auth_json = $auth_json . "    "expires" : "1607500000000",n";
$auth_json = $auth_json . "    "connections" : {n";
$auth_json = $auth_json . "        "Trading server 001" : {n";
$auth_json = $auth_json . "            "protocol" : "" . get_post_meta( $post->ID,'trading_server_protocol', true ) . "",n";
$auth_json = $auth_json . "            "parameters" : {n";
$auth_json = $auth_json . "                "hostname" : "" . get_post_meta( $post->ID,'trading_server_hostname', true ) . "",n";
$auth_json = $auth_json . "                "port" : "" . get_post_meta( $post->ID,'trading_server_port', true ) . "",n";
$auth_json = $auth_json . "                "password" : "" . get_post_meta( $post->ID,'trading_server_password', true ) . "",n";
$auth_json = $auth_json . "                "read-only" : "" . get_post_meta( $post->ID,'trading_server_readonly', true ) . ""n";
$auth_json = $auth_json . "            }n";
$auth_json = $auth_json . "        }n";
$auth_json = $auth_json . "    }n";
$auth_json = $auth_json . "}";
            
$encrypt_key = "12345678901234567890123456789012";
$NULL_IV="00000000000000000000000000000000";
// HMAC Hex to byte
$secret     = hex2bin($encrypt_key);
$auth_json_hash = hash_hmac("sha256", $auth_json, $secret);
$auth_json_hash_bin = hash_hmac("sha256", $auth_json, $secret, true);
            
$cipher = "AES-128-CBC";
$data = $auth_json_hash_bin . $auth_json;
$auth_json_encrypted_raw = openssl_encrypt( $data, $cipher, $encrypt_key, $options = OPENSSL_RAW_DATA, $NULL_IV );
$auth_json_encrypted_base64 = base64_encode( $auth_json_encrypted_raw );
 

У меня тот же хэш, но я не могу вызвать функцию openssl_encrypt с тем же результатом, что и при использовании примера bash.

Вероятно, есть какая-то проблема с различием между

openssl enc -aes-128-cbc -K «$KEY» -iv «$NULL_IV» -nosalt -a

и

openssl_encrypt( $data, $cipher, $encrypt_key, $options = OPENSSL_RAW_DATA, $NULL_IV)

Я понимаю, что мне нужно, чтобы base64 кодировал результат в php (-a switch), и мне нужно какое-то решение для (-nosalt switch).

Проблема была с шестнадцатеричными параметрами (encrypt_key, NULL_IV) в php.

Правильный код должен быть

 $encrypt_key = "12345678901234567890123456789012";
$NULL_IV="00000000000000000000000000000000";
..
$auth_json_encrypted_raw = openssl_encrypt( $data, $cipher, hex2bin($encrypt_key), $options = OPENSSL_RAW_DATA, hex2bin($NULL_IV) );