prismer-sdk 1.7.3

Prismer Cloud SDK — Context API, Parse API, IM, Evolution Engine
Documentation 
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use hmac::{Hmac, Mac};
use sha2::Sha256;

type HmacSha256 = Hmac<Sha256>;

/// Verify HMAC-SHA256 webhook signature.
pub fn verify_signature(payload: &[u8], signature: &str, secret: &str) -> bool {
    let mut mac = match HmacSha256::new_from_slice(secret.as_bytes()) {
        Ok(m) => m,
        Err(_) => return false,
    };
    mac.update(payload);
    let expected = hex::encode(mac.finalize().into_bytes());
    expected == signature
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_verify_signature() {
        let secret = "test-secret";
        let payload = b"hello world";
        let mut mac = HmacSha256::new_from_slice(secret.as_bytes()).unwrap();
        mac.update(payload);
        let sig = hex::encode(mac.finalize().into_bytes());

        assert!(verify_signature(payload, &sig, secret));
        assert!(!verify_signature(payload, "wrong", secret));
    }
}