Example usage for org.bouncycastle.cms CMSAttributeTableGenerator DIGEST

Introduction

In this page you can find the example usage for org.bouncycastle.cms CMSAttributeTableGenerator DIGEST.

Prototype

String DIGEST

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Usage

From source file:org.demoiselle.signer.policy.impl.cades.pkcs7.impl.DemoiselleSignedAttributeTableGenerator.java

License:Open Source License

/**
 * Create a standard attribute table from the passed in parameters - this will
 * normally include contentType, signingTime, and messageDigest. If the constructor
 * using an AttributeTable was used, entries in it for contentType, signingTime, and
 * messageDigest will override the generated ones.
 *
 * @param parameters source parameters for table generation.
 *
 * @return a filled in Hashtable of attributes.
 */// ww  w . ja  v a2  s.c o  m
protected Hashtable createStandardAttributeTable(Map parameters) {
    Hashtable std = copyHashTable(table);

    if (!std.containsKey(CMSAttributes.contentType)) {
        ASN1ObjectIdentifier contentType = ASN1ObjectIdentifier
                .getInstance(parameters.get(CMSAttributeTableGenerator.CONTENT_TYPE));

        // contentType will be null if we're trying to generate a counter signature.
        if (contentType != null) {
            Attribute attr = new Attribute(CMSAttributes.contentType, new DERSet(contentType));
            std.put(attr.getAttrType(), attr);
        }
    }

    if (!std.containsKey(CMSAttributes.messageDigest)) {
        byte[] messageDigest = (byte[]) parameters.get(CMSAttributeTableGenerator.DIGEST);
        Attribute attr = new Attribute(CMSAttributes.messageDigest,
                new DERSet(new DEROctetString(messageDigest)));
        std.put(attr.getAttrType(), attr);
    }

    return std;
}

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