traffic95
23fcde33f5
Reviewed-on: #7 Co-authored-by: traffic95 <traffic95@xeondev.com> Co-committed-by: traffic95 <traffic95@xeondev.com>
40 lines
1.3 KiB
Rust
40 lines
1.3 KiB
Rust
use rsa::{
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Pkcs1v15Encrypt, RsaPrivateKey, RsaPublicKey, pkcs1v15::SigningKey, sha2::Sha256,
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signature::RandomizedSigner,
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};
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const RSA_CHUNK_SIZE: usize = 117;
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pub fn encrypt(public_key: &[u8], data: &[u8]) -> Vec<u8> {
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let public_key: RsaPublicKey = rsa::pkcs8::DecodePublicKey::from_public_key_der(public_key)
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.expect("Failed to read public key from der");
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let mut rng = rand::thread_rng();
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let mut result: Vec<u8> = Vec::new();
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for chunk in data.chunks(RSA_CHUNK_SIZE) {
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let encrypted_chunk = public_key
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.encrypt(&mut rng, Pkcs1v15Encrypt, chunk)
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.expect("Encryption failed");
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result.extend(encrypted_chunk);
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}
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result
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}
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pub fn sign(private_key: &[u8], data: &[u8]) -> Box<[u8]> {
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let private_key = rsa::pkcs8::DecodePrivateKey::from_pkcs8_der(private_key)
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.expect("Failed to read pkcs8 private key");
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let signing_key = SigningKey::<Sha256>::new(private_key);
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signing_key
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.sign_with_rng(&mut rand::thread_rng(), data)
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.into()
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}
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pub fn decrypt(private_key: &[u8], cipher: &[u8]) -> Option<Vec<u8>> {
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let private_key: RsaPrivateKey = rsa::pkcs8::DecodePrivateKey::from_pkcs8_der(private_key)
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.expect("Failed to read pkcs8 private key");
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private_key.decrypt(Pkcs1v15Encrypt, cipher).ok()
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}
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