Node.js crypto.getCipherInfo() 方法
Node.js的 crypto.getCipherInfo() 方法提供了有关密码的详细信息。如果您想获取有关不同参数(如模式、密钥长度、块大小、初始化向量长度等)的信息,此方法非常有用。
语法: 以下是获取密码信息的语法:
// Import crypto module
const crypto = require('crypto');
// Call this method through crypto class object
crypto.getCipherInfo(name[, options);
or
const { getCipherInfo } = require('node:crypto');
// Directly import this method in project.
getCipherInfor(); // Calls directly
如您在上面的语法中所看到的,有两种方法可以在我们的项目中使用这个方法。首先,您可以在项目中导入crypto模块,并通过crypto调用该方法。第二种方式是直接将方法导入项目中。
参数:
- Name
<string>: 这是要查询的密码器的名称。可以传递为字符串或数字。 - Options
<object>: 这个对象包含有关密钥长度<number>和IV长度<number>的信息。返回值: 此方法基本上返回一个对象,其中包含与密码器相关的参数,如名称、nid、块大小、密钥长度和模式。
示例1: 在这个示例中,我们定义了一个密码器(aes-192-cbc)并打印了与此密码器相关的详细信息。我们使用crypto.getCipherInfo()方法来获取有关详细信息。
// Node.js program to demonstrate the
// crypto.getCipherInfo() method
// Importing the method from crypto module
const { getCipherInfo } = require('node:crypto');
// Defining our Cipher as a string
const cipher = 'aes-192-cbc';
// Storing the object returned by the below
// method into details variable
details = getCipherInfo(cipher);
// Printing the details
console.log(details);
输出:
{
mode: 'cbc',
name: 'aes-192-cbc'
nid: 423,
blockSize: 16,
ivLength: 16,
keyLength: 24
}
示例2: 在这个示例中,我们使用crypto.getCiphers()来获取所有密码的列表,并从列表中选择一个密码并将其传递给getCipherInfo(cipher)来获取有关此密码的信息。
// Node.js program to demonstrate the
// crypto.getCipherInfo() method
// Importing the crypto module
const crypto = require('node:crypto');
// Printing the list of ciphers
console.log(crypto.getCiphers());
// Defining our Cipher as a string
const cipher = 'aes-128-cbc-hmac-sha1';
// Storing the object returned by the
// below method into details variable
details = crypto.getCipherInfo(cipher);
// Printing the details
console.log(details);
输出:
[
...aria-192-cfb1',
'aria-192-cfb8',
'aria-192-ctr',
'aria-192-ecb',
'aria-192-gcm',
'aria-192-ofb',
'aria-256-cbc',
'aria-256-ccm',
'aria-256-cfb',
'aria-256-cfb1',
'aria-256-cfb8',
'aria-256-ctr',
'aria-256-ecb',
'aria-256-gcm',
'aria-256-ofb'.
'aria128',
'aria192',
'aria256',
'bf',
'bf-cbc',
'bf-cfb',
'bf-ecb',
'bf-ofb',
'blowfish',
'camellia-128-cbc',
'camellia-128-cfb',
'camellia-128-cfb1',
'camellia-128-cfb8',
'camellia-128-ctr',
'camellia-128-ecb',
'camellia-128-ofb',
'camellia-192-cbc',
'camellia-192-cfb',
'camellia-192-cfb1',
'camellia-192-cfb8',
'camellia-192-ctr',
'camellia-192-ecb',
'camellia-192-ofb',
'camellia-256-cbc',
'camellia-256-cfb',
'camellia-256-cfb1',
'camellia-256-cfb8',
'camellia-256-ctr',
'camellia-256-ecb',
'camellia-256-ofb',
'camellia128',
...75 more items
]
{
mode: 'cbc',
name: 'aes-128-cbc-hmac-sha1',
nid: 916,
blockSize: 16,
ivLength: 16,
keyLength: 16
}
参考资料: https://nodejs.org/api/crypto.html#cryptogetcipherinfonameornid-options
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