The Java™ Tutorials
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Input the Signature Bytes
Trail: Security Features in Java SE
Lesson: Generating and Verifying Signatures
Section: Verifying a Digital Signature

Input the Signature Bytes

Next, input the signature bytes from the file specified as the second command line argument.

FileInputStream sigfis = new FileInputStream(args[1]);
byte[] sigToVerify = new byte[sigfis.available()];;

Now the byte array sigToVerify contains the signature bytes.

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