cloudconvert-sdk 0.1.0

Async Rust SDK primitives for the CloudConvert API v2.
Documentation 
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use hmac::{Hmac, KeyInit, Mac};
use sha2::Sha256;

use crate::{Error, Result, SigningSecret};

type HmacSha256 = Hmac<Sha256>;

pub fn verify_signature(
    payload: impl AsRef<[u8]>,
    signature_hex: impl AsRef<str>,
    signing_secret: &SigningSecret,
) -> Result<bool> {
    let expected = hex::decode(signature_hex.as_ref()).map_err(|_| Error::InvalidSignatureHex)?;
    let mut mac = HmacSha256::new_from_slice(signing_secret.expose().as_bytes())
        .map_err(|_| Error::InvalidSignatureHex)?;
    mac.update(payload.as_ref());
    Ok(mac.verify_slice(&expected).is_ok())
}

pub fn sign_payload(payload: impl AsRef<[u8]>, signing_secret: &SigningSecret) -> Result<String> {
    let mut mac = HmacSha256::new_from_slice(signing_secret.expose().as_bytes())
        .map_err(|_| Error::InvalidSignatureHex)?;
    mac.update(payload.as_ref());
    Ok(hex::encode(mac.finalize().into_bytes()))
}