org.apache.shindig.common.crypto
Interface BlobCrypter

All Known Implementing Classes:

BasicBlobCrypter

public interface BlobCrypter

Utility interface for managing signed, encrypted, and time stamped blobs. Blobs are made up of name/value pairs. Time stamps are automatically included and checked. Thread safe.

Method Summary

Map<String,String>	unwrap(String in, int maxAgeSec) Unwraps a blob.
String	wrap(Map<String,String> in) Time stamps, encrypts, and signs a blob.

Method Detail

wrap

String wrap(Map<String,String> in)
            throws BlobCrypterException

Time stamps, encrypts, and signs a blob.

Parameters:

in - name/value pairs to encrypt

Returns:

a base64 encoded blob

Throws:

BlobCrypterException - when crypto errors occur

unwrap

Map<String,String> unwrap(String in,
                          int maxAgeSec)
                          throws BlobCrypterException

Unwraps a blob.

Parameters:

in - blob

maxAgeSec - maximum age for the blob

Returns:

the name/value pairs, including the origin timestamp.

Throws:

BlobExpiredException - if the blob is too old to be accepted.

BlobCrypterException - if the blob can't be decoded.