chore(rust)(deps): update rsa requirement from 0.7 to 0.8 in /wnfs (#168

)

* chore(rust)(deps): update rsa requirement from 0.7 to 0.8 in /wnfs

Updates the requirements on [rsa](https://github.com/RustCrypto/RSA) to permit the latest version.
- [Release notes](https://github.com/RustCrypto/RSA/releases)
- [Changelog](https://github.com/RustCrypto/RSA/blob/master/CHANGELOG.md)
- [Commits](RustCrypto/RSA@v0.7.0...v0.8.1)

---
updated-dependencies:
- dependency-name: rsa
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

* fix: Adjust to rsa 0.8 API

* refactor: merge imports

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Philipp Krüger <[email protected]>

wnfs/Cargo.toml

@@ -46,7 +46,7 @@ async-std = { version = "1.11", features = ["attributes"] }
 env_logger = "0.10"
 proptest = "1.1"
 rand = "0.8"
-rsa = "0.7"
+rsa = "0.8"
 sha2 = "0.10"
 test-log = "0.2"
 test-strategy = "0.3"

wnfs/src/private/keys/exchange.rs

@@ -5,7 +5,7 @@ use anyhow::anyhow;
 use anyhow::Result;
 use async_trait::async_trait;
 #[cfg(test)]
-use rsa::{BigUint, PaddingScheme, PublicKey as PublicKeyTrait, PublicKeyParts};
+use rsa::{BigUint, Oaep, PublicKey as PublicKeyTrait, PublicKeyParts};
 #[cfg(test)]
 use sha2::Sha256;
 
@@ -90,7 +90,7 @@ impl RsaPrivateKey {
 #[async_trait(?Send)]
 impl ExchangeKey for RsaPublicKey {
     async fn encrypt(&self, data: &[u8]) -> Result<Vec<u8>> {
-        let padding = PaddingScheme::new_oaep::<Sha256>();
+        let padding = Oaep::new::<Sha256>();
         self.0
             .encrypt(&mut rand::thread_rng(), padding, data)
             .map_err(|e| anyhow!(RsaError::EncryptionFailed(anyhow!(e))))
@@ -110,7 +110,7 @@ impl ExchangeKey for RsaPublicKey {
 #[async_trait(?Send)]
 impl PrivateKey for RsaPrivateKey {
     async fn decrypt(&self, ciphertext: &[u8]) -> Result<Vec<u8>> {
-        let padding = PaddingScheme::new_oaep::<Sha256>();
+        let padding = Oaep::new::<Sha256>();
         self.0
             .decrypt(padding, ciphertext)
             .map_err(|e| anyhow!(RsaError::DecryptionFailed(anyhow!(e))))