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e461. Listing All Available Encryption and Decryption Algorithms
Retrieving the list of available encryption/decryption algorithms requires checking the services provided by all registered providers. The retrieved list of names can be used in creating a Cipher object. 
    // This method is implemented in e194 Listing All Available Cryptographic Services
    String[] names = getCryptoImpls("Cipher");

An example of the output: 
    Blowfish
    DESede
    PBEWithMD5AndTripleDES
    TripleDES
    DES
    PBEWithMD5AndDES