Struct PrivateKeyImport

pub struct PrivateKeyImport {
    key_data: PrivateKeyData,
}

The key data required when importing a secret key

Fields

key_data: PrivateKeyData

Implementations

impl PrivateKeyImport

pub fn new( key_type: KeyType, key_data: &[u8], ) -> Result<PrivateKeyImport, Error>

Creates a new PrivateKeyImport

Accepts a KeyType (all except KeyType::Generic) and a bytes array representing a matching PKCS#8 private key in ASN.1 DER-encoded format.

Errors

Returns an error if

• key_data can not be deserialized to a respective private key format.
• an RSA private key does not have prime P or prime Q.
• an RSA private key is shorter than [MIN_RSA_BIT_LENGTH].
• key_type is the unsupported KeyType::Generic.

Examples

use ed25519_dalek::{SigningKey, pkcs8::EncodePrivateKey};
use rand::rngs::OsRng;
use signstar_crypto::key::{KeyType, PrivateKeyImport};

let key_data = {
    let mut csprng = OsRng;
    let signing_key: SigningKey = SigningKey::generate(&mut csprng);
    signing_key.to_pkcs8_der()?.as_bytes().to_vec()
};

assert!(PrivateKeyImport::new(KeyType::Curve25519, &key_data).is_ok());

pub fn from_pkcs8_pem( key_type: KeyType, key_data: &str, ) -> Result<PrivateKeyImport, Error>

Creates a new PrivateKeyImport

Accepts a KeyType (all except KeyType::Generic) and a string slice representing a matching PKCS#8 private key in PEM-encoded format.

Errors

Returns an error if

• key_data can not be deserialized to a respective private key format.
• an RSA private key does not have prime P or prime Q.
• an RSA private key is shorter than [MIN_RSA_BIT_LENGTH].
• key_type is the unsupported KeyType::Generic.

Examples

use std::ops::Deref;

use ed25519_dalek::{SigningKey, pkcs8::EncodePrivateKey, pkcs8::spki::der::pem::LineEnding};
use rand::rngs::OsRng;
use signstar_crypto::key::{KeyType, PrivateKeyImport};

let key_data = {
    let mut csprng = OsRng;
    let signing_key: SigningKey = SigningKey::generate(&mut csprng);
    signing_key.to_pkcs8_pem(LineEnding::default())?
};

assert!(PrivateKeyImport::from_pkcs8_pem(KeyType::Curve25519, key_data.deref()).is_ok());

pub fn from_rsa( prime_p: Vec<u8>, prime_q: Vec<u8>, public_exponent: Vec<u8>, ) -> PrivateKeyImport

Create PrivateKeyImport object from raw, private RSA key parts.

The function takes two primes (p and q) and the public exponent, which usually is 65537 ([0x01, 0x00, 0x01]).

Examples

use signstar_crypto::key::PrivateKeyImport;

let prime_p = vec![7];
let prime_q = vec![11];
let public_exponent = vec![1, 0, 1];

let _import = PrivateKeyImport::from_rsa(prime_p, prime_q, public_exponent);

pub fn from_raw_bytes( ec: KeyType, bytes: impl AsRef<[u8]>, ) -> Result<PrivateKeyImport, Error>

Create PrivateKeyImport object from raw, private Elliptic Curve bytes.

The function takes two parameters:

• the type of elliptic curve,
• raw bytes in a curve-specific encoding

Elliptic curve keys require the bytes to be zero-padded to be of correct size. This function automatically applies padding accordingly.

Examples

use signstar_crypto::key::{KeyType, PrivateKeyImport};

let bytes = vec![0x00; 32];

let _import = PrivateKeyImport::from_raw_bytes(KeyType::Curve25519, bytes)?;

pub fn key_type(&self) -> KeyType

Get the matching KeyType for the data contained in the PrivateKeyImport

Trait Implementations

impl Debug for PrivateKeyImport

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.