com.virgilsecurity.sdk.crypto

Class CryptoHelper

java.lang.Object

com.virgilsecurity.sdk.crypto.CryptoHelper

public class CryptoHelper
extends Object

This is utils class which covers Virgil Crypto functionality.

Author:

Andrii Iakovenko

Constructor Summary

Constructors

Constructor and Description
CryptoHelper()

Method Summary

Modifier and Type	Method and Description
static String	decrypt(String base64Text, String password) Decrypt text with password.
static String	decrypt(String base64Text, String recipientId, PrivateKey privateKey) Decrypt text with private key.
static String	decrypt(String base64Text, String recipientId, PrivateKey privateKey, Password password) Decrypt text with private key which protected with password.
static String	encrypt(String text, Map<String,String> recipients) Encrypt text with public key for multiple recipients.
static String	encrypt(String text, String password) Encrypt text with password.
static String	encrypt(String text, String recipientId, PublicKey publicKey) Encrypt text with public key.
static String	sign(String text, PrivateKey privateKey) Sign text with private key.
static String	sign(String text, PrivateKey privateKey, Password password) Sign text with private key.
static boolean	verify(String text, String signature, PublicKey publicKey) Verify text with signature.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CryptoHelper

public CryptoHelper()

Method Detail

encrypt

public static String encrypt(String text,
                             String password)
                      throws Exception

Encrypt text with password.

Parameters:

text - the text to be encrypted.

password - the password used for encryption.

Returns:

encrypted data as Base64 string.

Throws:

Exception

encrypt

public static String encrypt(String text,
                             String recipientId,
                             PublicKey publicKey)
                      throws Exception

Encrypt text with public key.

Parameters:

text - the text to be encrypted.

recipientId - the recipient ID.

publicKey - the public key of recipient.

Returns:

encrypted data as Base64 string.

Throws:

Exception

encrypt

public static String encrypt(String text,
                             Map<String,String> recipients)
                      throws Exception

Encrypt text with public key for multiple recipients.

Parameters:

text - the text to be encrypted.

recipients - the map of recipients. Key is recipient identifier, value is Base64-encoded public key.

Returns:

encrypted data as Base64 string.

Throws:

Exception

decrypt

public static String decrypt(String base64Text,
                             String password)
                      throws Exception

Decrypt text with password.

Parameters:

base64Text - encrypted data as Base64 string.

password - the password used for decryption.

Returns:

decrypted text as String.

Throws:

Exception

decrypt

public static String decrypt(String base64Text,
                             String recipientId,
                             PrivateKey privateKey)
                      throws Exception

Decrypt text with private key.

Parameters:

base64Text - encrypted data as Base64 string.

recipientId - the recipient ID.

privateKey - the private key of recipient.

Returns:

decrypted text as String.

Throws:

Exception

decrypt

public static String decrypt(String base64Text,
                             String recipientId,
                             PrivateKey privateKey,
                             Password password)
                      throws Exception

Decrypt text with private key which protected with password.

Parameters:

base64Text - encrypted data as Base64 string.

recipientId - the recipient ID.

privateKey - the private key of recipient.

password - the private key's password.

Returns:

decrypted text as String.

Throws:

Exception

sign

public static String sign(String text,
                          PrivateKey privateKey)
                   throws Exception

Sign text with private key.

Parameters:

text - the text to be signed.

privateKey - the private key.

Returns:

sign as Base64 string.

Throws:

Exception

sign

public static String sign(String text,
                          PrivateKey privateKey,
                          Password password)
                   throws Exception

Sign text with private key.

Parameters:

text - the text to be signed.

privateKey - the private key.

password - the private key's password.

Returns:

sign as Base64 string.

Throws:

Exception

verify

public static boolean verify(String text,
                             String signature,
                             PublicKey publicKey)
                      throws Exception

Verify text with signature.

Parameters:

text - the text to be signed.

publicKey - the public key used for verification.

Returns:

true if verification success.

Throws:

Exception