Question 1

Should I use Pandect or buddy for hashing in Clojure?

Accepted Answer

Pandect offers broader algorithm support and performance optimizations for pure hashing tasks, while buddy includes additional features like encryption and is more security-focused. Choose Pandect for speed and variety in hashing, or buddy for a more comprehensive security library.

Question 2

How do I hash a file with SHA-256 using Pandect?

Accepted Answer

Use the `sha256-file` function from the `pandect.algo.sha256` namespace. For example, `(sha256-file "path/to/file")` returns the hash string, as shown in the REPL examples. Ensure the file is accessible and handle streams with `with-buffer-size` for large files.

Question 3

What's the deal with BouncyCastle and Pandect Uberjars?

Accepted Answer

Pandect requires BouncyCastle for algorithms like BLAKE2, but JCE restrictions mean the signed BouncyCastle JAR must remain separate from the Uberjar. You must add it as a provided dependency and include it in the classpath at runtime, as detailed in the Uberjars section.

Question 4

Does Pandect work with string encodings other than UTF-8?

Accepted Answer

Yes, but you need to manually convert strings to byte arrays with the desired encoding using `.getBytes`, as demonstrated in the README for ISO-8859-1. Pandect does not handle encodings automatically, requiring extra code for non-UTF-8 cases.

Question 5

Is Pandect suitable for hashing passwords?

Accepted Answer

While it supports algorithms like BLAKE2b, Pandect lacks built-in password hashing functions such as bcrypt or argon2, which are recommended for secure password storage. You'd need to implement or use another library for that purpose.

Question 6

How can I improve performance when hashing large streams with Pandect?

Accepted Answer

Use the `pandect.buffer/with-buffer-size` macro to adjust the buffer size for stream processing, as shown in the examples. Increasing the buffer size can optimize throughput for large files, though default is 2KB.

pandect

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