fn try_decrypt_b64()

in src/legacy.rs [199:214]

• 13 lines of code
• 1 McCabe index (conditional complexity)

    fn try_decrypt_b64(
        priv_key: &str,
        pub_key: &str,
        auth_secret: &str,
        block: &AesGcmEncryptedBlock,
    ) -> Result<String> {
        // The AesGcmEncryptedBlock is composed from the `Crypto-Key` & `Encryption` headers, and post body
        // The Block will attempt to decode the base64 strings for dh & salt, so no additional action needed.
        // Since the body is most likely not encoded, it is expected to be a raw buffer of [u8]
        let priv_key_raw = base64::engine::general_purpose::URL_SAFE_NO_PAD.decode(priv_key)?;
        let pub_key_raw = base64::engine::general_purpose::URL_SAFE_NO_PAD.decode(pub_key)?;
        let ec_key = EcKeyComponents::new(priv_key_raw, pub_key_raw);
        let auth_secret = base64::engine::general_purpose::URL_SAFE_NO_PAD.decode(auth_secret)?;
        let plaintext = decrypt_aesgcm(&ec_key, &auth_secret, block)?;
        Ok(String::from_utf8(plaintext).unwrap())
    }