RSAUtils

Path

com.roma.apic.livedata.common.v1.RSAUtils

Description

This class is used to provide the RSA encryption and decryption methods.

Constructor Details

public RSAUtils()

Constructs an RSAUtils without parameters.

Method List

Method Details

• public static byte[] decodeBase64(String base64)

  Decode a Base64 character string to binary data.

  Input Parameter

  base64 indicates the data encoded using Base64.

  Returns

  Data decoded by using Base64

  Throws

  Exception

• public static byte[] decrypt(java.security.PrivateKey privateKey, byte[] encryptData)

  Decrypt data using the RSA algorithm.

  Input Parameter

  • privateKey indicates a private key.
  • encryptData indicates the data to be decrypted.

  Returns

  Decrypted data.

  Throws

  • javax.crypto.IllegalBlockSizeException
  • javax.crypto.BadPaddingException
  • java.security.InvalidKeyException
  • java.security.NoSuchAlgorithmException
  • javax.crypto.NoSuchPaddingException
• public static String encrypt(String source, java.security.interfaces.RSAPrivateKey privateKey)

  Encrypt data using the RSA algorithm.

  Input Parameter

  • source indicates data to be encrypted.
  • privateKey indicates a private key.

  Returns

  Encrypted data.

• public static String encodeBase64(byte[] bytes)

  Encode binary data to a Base64 character string.

  Input Parameter

  bytes indicates data to be encoded.

  Returns

  Base64 encoding.

  Throws

  Exception

• public static byte[] encrypt(java.security.PublicKey publicKey, byte[] source)

  Encrypt data using the RSA algorithm.

  Input Parameter

  • publicKey indicates a public key.
  • source indicates data to be decrypted.

  Returns

  Encrypted data content.

  Throws

  Exception

• public static String encrypt(String source, java.security.PublicKey publicKey)

  Encrypt data using the RSA algorithm.

  Input Parameter

  • source indicates the content to be encrypted.
  • publicKey indicates a public key.

  Returns

  Encrypted data content.

  Throws

  Exception

• public static org.bouncycastle.jce.provider.BouncyCastleProvider getInstance()

  Obtain the encryption algorithm provider.

  Returns

  Encryption algorithm provider.

• public static java.security.interfaces.RSAPrivateKey getPrivateKey(byte[] privateKeyByte)

  Create the RSA private key by using the private key of the x509 format.

  Input Parameter

  privateKeyByte indicates the private key encoded in x509 format

  Returns

  Private key.

  Throws

  • java.security.spec.InvalidKeySpecException
  • java.security.NoSuchAlgorithmException
• public static java.security.interfaces.RSAPrivateKey getPrivateKey(String privateKeyByte)

  Create the RSA private key by using the private key of the x509 format.

  Input Parameter

  privateKeyByte indicates the private key encoded in x509 format

  Returns

  Private key.

  Throws

  Exception

• public static java.security.interfaces.RSAPrivateKey getPrivateKey(String modulus, String exponent)

  Create an RSA private key by using the modulus and exponent.

  Input Parameter

  • modulus indicates the modulus required for generating a private key.
  • exponent indicates the exponent required for generating a private key.

  Returns

  RSA private key.

• public static java.security.interfaces.RSAPublicKey getPublicKey(byte[] publicKeyByte)

  Create the RSA public key by using the private public encoded in x509 format.

  Input Parameter

  publicKeyByte indicates the public key encoded in x509 format.

  Returns

  Public key.

  Throws

  • java.security.NoSuchAlgorithmException
  • java.security.spec.InvalidKeySpecException
• public static java.security.PublicKey getPublicKey(String modulus, String exponent)

  Create an RSA public key by using the modulus and exponent.

  Input Parameter

  • modulus indicates the modulus required for generating a public key.
  • exponent indicates the exponent required for generating a public key.

  Returns

  RSA public key.