MessageDigest SHA-512 different than openssl

Question

I can't figure out what I'm doing wrong here. I have the following code:

byte[] digest = new byte[0];
MessageDigest md = null;
try{
    md = MessageDigest.getInstance( "SHA-512" );
}
catch( NoSuchAlgorithmException e ) {
    return digest;
}
digest = md.digest( myString.getBytes() );

Looking at the hex values of digest byte[] in the NetBeans debugger, it shows something different than the output of:

echo "myString" | openssl dgst -sha512

I'm guessing it's a character encoding issue, but doesn't the JVM and openssl use the default character set for the machine?

Any help is appreciated.

Agone

Character encodings shouldn't be an issue for "myString", since that's pure ASCII. But you might want to examine the return value of myString.getBytes() just to make sure. – Epicycle

Answer 1

echo appends a newline at the end -

[steven@emu:~]% echo "myString" | hexdump -C
00000000  6d 79 53 74 72 69 6e 67  0a                       |myString.|

Try echo -n?

Cholecyst

That was it! You are a bash ninja! Thank you. – Agone

That has tripped me up before too! – Somersault