Can you get this same Java SHA-1 in PHP please?

Question

I find myself in a need to change website platforms from Java to PHP but I\'d like to keep all my user\'s passwords...

I had this code do the password hashing prior

Answer 1

PHP's sha1() encodes each byte of the output as hexadecimal by default, but you can get the raw output by passing true as the second argument:

$digest = sha1($password, true); // This returns the same string of bytes as md.digest()

Then pass the digest to base64_encode and you are done:

base64_encode(sha1($password, true));

This returns the exact same SHA-1 hash as your java code.