remove redundant modifiers found by checkstyle

crypto/src/main/java/org/springframework/security/crypto/bcrypt/BCrypt.java

@@ -485,7 +485,7 @@ public class BCrypt {
 	 * @param lr	an array containing the two 32-bit half blocks
 	 * @param off	the position in the array of the blocks
 	 */
-	private final void encipher(int lr[], int off) {
+	private void encipher(int lr[], int off) {
 		int i, n, l = lr[off], r = lr[off + 1];
 
 		l ^= P[0];

crypto/src/main/java/org/springframework/security/crypto/encrypt/HexEncodingTextEncryptor.java

@@ -28,7 +28,7 @@ final class HexEncodingTextEncryptor implements TextEncryptor {
 
 	private final BytesEncryptor encryptor;
 
-	public HexEncodingTextEncryptor(BytesEncryptor encryptor) {
+	HexEncodingTextEncryptor(BytesEncryptor encryptor) {
 		this.encryptor = encryptor;
 	}
 

crypto/src/main/java/org/springframework/security/crypto/keygen/HexEncodingStringKeyGenerator.java

@@ -26,7 +26,7 @@ final class HexEncodingStringKeyGenerator implements StringKeyGenerator {
 
 	private final BytesKeyGenerator keyGenerator;
 
-	public HexEncodingStringKeyGenerator(BytesKeyGenerator keyGenerator) {
+	HexEncodingStringKeyGenerator(BytesKeyGenerator keyGenerator) {
 		this.keyGenerator = keyGenerator;
 	}
 

crypto/src/main/java/org/springframework/security/crypto/keygen/SecureRandomBytesKeyGenerator.java

@@ -34,14 +34,14 @@ final class SecureRandomBytesKeyGenerator implements BytesKeyGenerator {
 	/**
 	 * Creates a secure random key generator using the defaults.
 	 */
-	public SecureRandomBytesKeyGenerator() {
+	SecureRandomBytesKeyGenerator() {
 		this(DEFAULT_KEY_LENGTH);
 	}
 
 	/**
 	 * Creates a secure random key generator with a custom key length.
 	 */
-	public SecureRandomBytesKeyGenerator(int keyLength) {
+	SecureRandomBytesKeyGenerator(int keyLength) {
 		this.random = new SecureRandom();
 		this.keyLength = keyLength;
 	}

crypto/src/main/java/org/springframework/security/crypto/keygen/SharedKeyGenerator.java

@@ -26,7 +26,7 @@ final class SharedKeyGenerator implements BytesKeyGenerator {
 
 	private byte[] sharedKey;
 
-	public SharedKeyGenerator(byte[] sharedKey) {
+	SharedKeyGenerator(byte[] sharedKey) {
 		this.sharedKey = sharedKey;
 	}
 
@@ -38,4 +38,4 @@ final class SharedKeyGenerator implements BytesKeyGenerator {
 		return sharedKey;
 	}
 
-}
+}

crypto/src/main/java/org/springframework/security/crypto/password/Digester.java

@@ -38,7 +38,7 @@ final class Digester {
 	 * @param algorithm the digest algorithm; for example, "SHA-1" or "SHA-256".
 	 * @param iterations the number of times to apply the digest algorithm to the input
 	 */
-	public Digester(String algorithm, int iterations) {
+	Digester(String algorithm, int iterations) {
 		// eagerly validate the algorithm
 		createDigest(algorithm);
 		this.algorithm = algorithm;
@@ -53,7 +53,7 @@ final class Digester {
 		return value;
 	}
 
-	final void setIterations(int iterations) {
+	void setIterations(int iterations) {
 		if (iterations <= 0) {
 			throw new IllegalArgumentException("Iterations value must be greater than zero");
 		}

crypto/src/test/java/org/springframework/security/crypto/encrypt/BouncyCastleAesBytesEncryptorEquivalencyTest.java

@@ -126,7 +126,7 @@ public class BouncyCastleAesBytesEncryptorEquivalencyTest {
 
 		private final int keyLength;
 
-		public PredictableRandomBytesKeyGenerator(int keyLength) {
+		PredictableRandomBytesKeyGenerator(int keyLength) {
 			this.random = new Random(1);
 			this.keyLength = keyLength;
 		}