1e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrompackage org.bouncycastle.operator; 2e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom 3e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstromimport java.io.OutputStream; 4e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom 5e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstromimport org.bouncycastle.asn1.x509.AlgorithmIdentifier; 6e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom 7e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrompublic interface ContentVerifier 8e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom{ 9e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom /** 10e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom * Return the algorithm identifier describing the signature 11e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom * algorithm and parameters this expander supports. 12e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom * 13e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom * @return algorithm oid and parameters. 14e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom */ 15e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom AlgorithmIdentifier getAlgorithmIdentifier(); 16e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom 17e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom /** 18e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom * Returns a stream that will accept data for the purpose of calculating 19e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom * a signature for later verification. Use org.bouncycastle.util.io.TeeOutputStream if you want to accumulate 20e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom * the data on the fly as well. 21e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom * 22e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom * @return an OutputStream 23e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom */ 24e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom OutputStream getOutputStream(); 25e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom 26e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom /** 27e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom * @param expected expected value of the signature on the data. 28e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom * @return true if the signature verifies, false otherwise 29e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom */ 30e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom boolean verify(byte[] expected); 31e6bf3e8dfa2804891a82075cb469b736321b4827Brian Carlstrom}