rsa/pkcs1v15/
decrypting_key.rs

1use super::{decrypt, EncryptingKey};
2use crate::{
3    dummy_rng::DummyRng,
4    traits::{Decryptor, EncryptingKeypair, RandomizedDecryptor},
5    Result, RsaPrivateKey,
6};
7use alloc::vec::Vec;
8use rand_core::CryptoRngCore;
9use zeroize::ZeroizeOnDrop;
10
11/// Decryption key for PKCS#1 v1.5 decryption as described in [RFC8017 § 7.2].
12///
13/// [RFC8017 § 7.2]: https://datatracker.ietf.org/doc/html/rfc8017#section-7.2
14#[derive(Debug, Clone)]
15pub struct DecryptingKey {
16    inner: RsaPrivateKey,
17}
18
19impl DecryptingKey {
20    /// Create a new verifying key from an RSA public key.
21    pub fn new(key: RsaPrivateKey) -> Self {
22        Self { inner: key }
23    }
24}
25
26impl Decryptor for DecryptingKey {
27    fn decrypt(&self, ciphertext: &[u8]) -> Result<Vec<u8>> {
28        decrypt::<DummyRng>(None, &self.inner, ciphertext)
29    }
30}
31
32impl RandomizedDecryptor for DecryptingKey {
33    fn decrypt_with_rng<R: CryptoRngCore + ?Sized>(
34        &self,
35        rng: &mut R,
36        ciphertext: &[u8],
37    ) -> Result<Vec<u8>> {
38        decrypt(Some(rng), &self.inner, ciphertext)
39    }
40}
41
42impl EncryptingKeypair for DecryptingKey {
43    type EncryptingKey = EncryptingKey;
44    fn encrypting_key(&self) -> EncryptingKey {
45        EncryptingKey {
46            inner: self.inner.clone().into(),
47        }
48    }
49}
50
51impl ZeroizeOnDrop for DecryptingKey {}
rsa/pkcs1v15/decrypting_key.rs

rsa/pkcs1v15/
decrypting_key.rs
