Example usage for javax.crypto NoSuchPaddingException NoSuchPaddingException

Introduction

In this page you can find the example usage for javax.crypto NoSuchPaddingException NoSuchPaddingException.

Prototype

public NoSuchPaddingException(String msg) 

Source Link

Document

Constructs a NoSuchPaddingException with the specified detail message.

Usage

From source file:org.opensc.pkcs11.spi.PKCS11CipherSpi.java

@Override
protected void engineSetPadding(String padding) throws NoSuchPaddingException {
    if (!padding.equals("PKCS1Padding"))
        throw new NoSuchPaddingException("Only PKCS1Padding is supported.");
}

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From source file:watne.seis720.project.AES_Utilities.java

/**
 * Given an array of bytes padded using the specified method, return an
 * unpadded array of bytes./*from w w w  .j  ava 2 s  .c o  m*/
 * @param padded the padded array of bytes.
 * @param padding the padding methodology used.
 * @return an unpadded array of bytes.
 * @throws NoSuchPaddingException if the padded array is not of the proper
 * length for the given Padding type.
 */
public static byte[] getUnpadded(byte[] padded, Padding padding) throws NoSuchPaddingException {
    byte[] unpadded = padded; // Initialize to padded.

    switch (padding) {
    case PKCS5PADDING:
        // Get number of bytes padding.
        if (padded.length > 0) {
            // Last padding bytes have number of padding bytes, so just
            // look at last byte in array and convert to int.
            int numPaddingBytes = padded[padded.length - 1];

            if (numPaddingBytes < 1) {
                throw new NoSuchPaddingException(
                        "AES_Utilities.getUnpadded() error: Invalid number of padding bytes: "
                                + numPaddingBytes);
            } // if (numPaddingBytes < 1)
            else if (numPaddingBytes > padded.length) {
                throw new NoSuchPaddingException("AES_Utilities.getUnpadded() error: padding " + numPaddingBytes
                        + " bytes exceeds array size " + padded.length);
            } // else if (numPaddingBytes > padded.length)

            // Create new unpadded array without numPaddingBytes
            // elements at end.
            unpadded = new byte[padded.length - numPaddingBytes];
            // Copy the elements before the padding.
            System.arraycopy(padded, 0, unpadded, 0, padded.length - numPaddingBytes);
        } // if (padded.length > 0)
        else {
            throw new NoSuchPaddingException("AES_Utilities.getUnpadded() error: array has no padding");
        } // else [padded.length <= 0]
        break; // case PKCS5PADDING
    case NOPADDING:
        /* Unpadded = padded; do nothing. */
        break;
    default:
        throw new NoSuchPaddingException("Padding mode " + padding + " is not supported.");
    } // switch (padding)

    return unpadded; // Return unpadded array.
}

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