Package com.github.toolarium.security.signature

Class SignatureUtil

  • public final class SignatureUtil
extends java.lang.Object
    This class implements a simple interface to sign data and verify the signed data. The class works with the standard API of java and use public and private keys.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      static SignatureUtil getInstance()
      Get the instance
      byte[] sign​(java.lang.String provider, java.lang.String algorithm, java.security.PrivateKey privateKey, byte[] data)
      Sign data with the given algorithm and private key.
      byte[] sign​(java.lang.String algorithm, java.security.PrivateKey privateKey, byte[] data)
      Sign data with the given algorithm and private key.
      boolean verify​(java.lang.String provider, java.lang.String algorithm, java.security.PublicKey publicKey, byte[] dataToVerify, byte[] dataToCompareWith)
      Verify a signed data.
      boolean verify​(java.lang.String algorithm, java.security.PublicKey publicKey, byte[] dataToVerify, byte[] dataToCompareWith)
      Verify a signed data.

      • Methods inherited from class java.lang.Object

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

    • Method Detail

      • getInstance

        public static SignatureUtil getInstance()
        Get the instance
        Returns:
        the instance

      • verify

        public boolean verify​(java.lang.String algorithm,
                      java.security.PublicKey publicKey,
                      byte[] dataToVerify,
                      byte[] dataToCompareWith)
               throws java.security.GeneralSecurityException
        Verify a signed data.
        Parameters:
        algorithm - the algorithm like: SHA1withRSA, SHA1withDSA, RSA...
        publicKey - the public key
        dataToVerify - the data to verify the signature
        dataToCompareWith - the data to compare with the signed data
        Returns:
        true if the verification of the response is identical.
        Throws:
        java.security.GeneralSecurityException - in case of error

      • verify

        public boolean verify​(java.lang.String provider,
                      java.lang.String algorithm,
                      java.security.PublicKey publicKey,
                      byte[] dataToVerify,
                      byte[] dataToCompareWith)
               throws java.security.GeneralSecurityException
        Verify a signed data.
        Parameters:
        provider - the provider
        algorithm - the algorithm like: SHA1withRSA, SHA1withDSA, RSA...
        publicKey - the public key
        dataToVerify - the data to verify the signature
        dataToCompareWith - the data to compare with the signed data
        Returns:
        true if the verification of the response is identical.
        Throws:
        java.security.GeneralSecurityException - in case of error

      • sign

        public byte[] sign​(java.lang.String algorithm,
                   java.security.PrivateKey privateKey,
                   byte[] data)
            throws java.security.GeneralSecurityException
        Sign data with the given algorithm and private key.
        Parameters:
        algorithm - the algorithm like: SHA1withRSA, SHA1withDSA, RSA...
        privateKey - the private key
        data - the data to sign
        Returns:
        the signed response
        Throws:
        java.security.GeneralSecurityException - in case of error

      • sign

        public byte[] sign​(java.lang.String provider,
                   java.lang.String algorithm,
                   java.security.PrivateKey privateKey,
                   byte[] data)
            throws java.security.GeneralSecurityException
        Sign data with the given algorithm and private key.
        Parameters:
        provider - the provider
        algorithm - the algorithm like: SHA1withRSA, SHA1withDSA, RSA...
        privateKey - the private key
        data - the data to sign
        Returns:
        the signed response
        Throws:
        java.security.GeneralSecurityException - in case of error