harmony 鸿蒙@system.cipher (Cipher Algorithm)

2022-08-09
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@system.cipher (Cipher Algorithm)

NOTE

The initial APIs of this module are supported since API version 3. Newly added APIs will be marked with a superscript to indicate their earliest API version.

The APIs provided by this module are deprecated since API version 9. You are advised to use @ohos.security.cryptoFramework Cipher.

Modules to Import

import cipher from '@system.cipher';

CipherResponse

Defines the response to the cipher interface called.

System capability: SystemCapability.Security.Cipher

Name	Type	Readable	Writable	Description
text	string	Yes	No	Response content.

CipherRsaOptions

Defines the input parameters of cipher.rsa().

System capability: SystemCapability.Security.Cipher

Name	Type	Mandatory	Description
action	string	Yes	Action to perform. The options are as follows: 1. encrypt: Encrypts data. 2. decrypt: Decrypts data.
text	string	Yes	Text to be encrypted or decrypted. The text to be encrypted must be a common text and cannot exceed the length calculated based on the formula (keySize/8 - 66). keySize indicates the key length. For example, if the key length is 1024 bytes, the text cannot exceed 62 bytes (¹⁰²⁴⁄₈ - 66 = 62). The text to be decrypted must be a binary value encoded in Base64. The default format is used for Base64 encoding.
key	string	Yes	RSA key. It is a public key in encryption and a private key in decryption.
transformation	string	No	RSA padding. The default value is RSA/None/OAEPWithSHA256AndMGF1Padding.
success	(data: CipherResponse) => void	No	Called when data is encrypted or decrypted successfully.
fail	(data: string, code: number) => void	No	Called when data fails to be encrypted or decrypted.
complete	() => void	No	Called when the execution is complete.

CipherAesOptions

Defines the input parameters of cipher.aes().

System capability: SystemCapability.Security.Cipher

Name	Type	Mandatory	Description
action	string	Yes	Action to perform. The options are as follows: 1. encrypt: Encrypts data. 2. decrypt: Decrypts data.
text	string	Yes	Text to be encrypted or decrypted. The text to be encrypted must be common text. The text to be decrypted must be a binary value encoded in Base64. The default format is used for Base64 encoding.
key	string	Yes	Key used for encryption or decryption. It is a Base64 encoded string.
transformation	string	No	Encryption mode and padding of the AES algorithm. The default value is AES/CBC/PKCS5Padding.
iv	string	No	Initialization vector (IV) for AES-based encryption and decryption. The value is a string encoded in Base64. The default value is the key value.
ivOffset	string	No	Offset of the IV for AES-based encryption and decryption. The default value is 0, which is the only value supported.
ivLen	string	No	Length of the IV, in bytes. This field is reserved. The default value is 16, which is the only value supported.
success	(data: CipherResponse) => void	No	Called when data is encrypted or decrypted successfully.
fail	(data: string, code: number) => void	No	Called when data fails to be encrypted or decrypted.
complete	() => void	No	Called when the execution is complete.

cipher.rsa

rsa(options: CipherRsaOptions): void

Encrypts or decrypts data using RSA.

System capability: SystemCapability.Security.Cipher

Parameters

Name	Type	Mandatory	Description
options	CipherRsaOptions	Yes	Parameters set for RSA encryption or decryption.

Example

export default {
  rsa() {
    cipher.rsa({
      // Encrypt data.
      action: 'encrypt',
      // Text to be encrypted.
      text: 'hello',
      // Base64-encoded public key used for encryption.
      key:
     'MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCx414QSP3RsYWYzf9mkBMiBAXo\n' +
     '6S7Lpva1fKlcuVxjoFC1iMnzD4mC0uiL4k5MNi43J64c7dbqi3qAJjdAtuwQ6NZJ\n' +
     '+Enz0RzmVFh/4yk6lmqRzuEFQqhQqSZzaLq6sq2N2G0Sv2Xl3sLvqAfe2HNm2oBw\n' +
     'jBpApTJ3TeneOo6Z5QIDAQAB',
      success: function(data) {
        console.log(`handling success:${data.text}`);
      },
      fail: function(data, code) {
        console.log(`### cipher.rsa encrypt fail ### ${code}:${data}`);
      },
      complete: function() {
        console.log(`operation complete!`);
      }
      });
      cipher.rsa({
        // Decrypt data.
        action: 'decrypt',
        // Text to be decrypted, which is binary text encoded in Base64. The decrypted text is "hello".
        text:
       'EPeCFPib6ayKbA0M6oSywARvFZ8dFYfjQv3nY8ikZGtS9UHq2sLPvAfpeIzggSiCxqbWeCftP1XQ\n' +
       'Sa+jEpzFlT1qoSTunBbrYzugPTajIJDTg6R1IRsF/J+mmakn0POVPvi4jCo9wqavB324Bx0Wipnc\n' +
       'EU5WO0oBHo5l4x6dTpU=',
           // Base64-encoded private key used for decryption.
         key:
        'MIICXgIBAAKBgQCx414QSP3RsYWYzf9mkBMiBAXo6S7Lpva1fKlcuVxjoFC1iMnz\n' +
        'D4mC0uiL4k5MNi43J64c7dbqi3qAJjdAtuwQ6NZJ+Enz0RzmVFh/4yk6lmqRzuEF\n' +
        'QqhQqSZzaLq6sq2N2G0Sv2Xl3sLvqAfe2HNm2oBwjBpApTJ3TeneOo6Z5QIDAQAB\n' +
        'AoGBAKPNtoRQcklxqo+2wQP0j2m3Qqnib1DggjVEgb/8f/LNYQSI3U2QdROemryU\n' +
        'u3y6N3xacZ359PktTrRKfH5+8ohmHGhIuPAnefp6bLvAFUcl4t1xm74Cow62Kyw3\n' +
        'aSbmuTG98dxPA1sXD0jiprdtsq2wQ9CoKNyY7/d/pKoqxNuBAkEA4GytZ60NCTj9\n' +
        'w24jACFeko5YqCFY/TTLoc4SQvWtFMnimRPclLZhtUIK0P8dib71UFedx+AxklgL\n' +
        'A5gjcfo+2QJBAMrqiwyCh3OQ5DhyRPDwt87x1/jg5fy4hhete2ufSf2FoQCVqO+w\n' +
        'PKoljdXmJeS6rGgzGibstuHLrP3tcIho4+0CQD3ZFWzF/xq0jxKlrpWhnJuNCRfE\n' +
        'oO6e9yNvVA8J/5oEDSOcmqSNIp4+RhbUx8InUxnCG6Ryv5aSFu71pYcKrPkCQQCL\n' +
        'RUGcm3ZGTnslduB0knNF+V2ndwzDUQ7P74UXT+PjurTPhujFYiuxCEd6ORVnEOzG\n' +
        'M9TORIgdH8MjIbWsGnndAkEAw9yURDaorE8IYPLF2IEn09g1uzvWPs3phDb6smVx\n' +
        '8GfqIdUNf+aCG5TZK/kXBF1sqcsi7jXMAf4jBlejVbSVZg==',
         success: function(data) {
           console.log(`handling success:${data.text}`);
         },
         fail: function(data, code) {
           console.log(`### cipher.rsa encrypt fail ### ${code}:${data}`);
         },
         complete: function() {
           console.log(`operation complete!`);
         }
       });
   }
}

cipher.aes

aes(options: CipherAesOptions): void

Encrypts or decrypts data using AES.

System capability: SystemCapability.Security.Cipher

Parameters

Name	Type	Mandatory	Description
options	CipherAesOptions	Yes	Parameters set for AES encryption or decryption.

Example

export default {
  aes() {
    cipher.aes({
      // Encrypt data.
      action: 'encrypt',
      // Text to be encrypted.
      text: 'hello',
      // Base64-encoded key.           
      key: 'NDM5Qjk2UjAzMEE0NzVCRjlFMkQwQkVGOFc1NkM1QkQ=',
      transformation: 'AES/CBC/PKCS5Padding',
      ivOffset: '0',
      ivLen: '16',
      success: function(data) {
        console.log(`handling success:${data.text}`);
        },
      fail: function(data, code) {
        console.log(`### cipher.rsa encrypt fail ### ${code}:${data}`);
        },
      complete: function() {
        console.log(`operation complete!`);
      }
    });
    cipher.aes({
      // Decrypt data.
      action: 'decrypt',
      // Text to be decrypted, which is binary text encoded in Base64.
      text: '1o0kf2HXwLxHkSh5W5NhzA==',
       // Base64-encoded key.           
       key: 'NDM5Qjk2UjAzMEE0NzVCRjlFMkQwQkVGOFc1NkM1QkQ=',
       transformation: 'AES/CBC/PKCS5Padding',
       ivOffset: '0',
       ivLen: '16',
       success: function(data) {
         console.log(`handling success:${data.text}`);
        },
       fail: function(data, code) {
         console.log(`### cipher.aes encrypt fail ### ${code}:${data}`);
       },
       complete: function() {
         console.log(`operation complete!`);
        }
     });
  }
}