70 lines
1.9 KiB
Rust
70 lines
1.9 KiB
Rust
use super::*;
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use rsa::{PublicKeyParts, RSAPublicKey};
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use std::convert::TryInto;
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impl KeyExt for RSAPublicKey {
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fn to_pem_pkcs8(&self) -> Result<String, KeyError> {
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let bytes = write_pkcs1(self);
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let oid = yasna::models::ObjectIdentifier::from_slice(&RSA_OID);
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let contents = yasna::construct_der(|writer| {
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writer.write_sequence(|writer| {
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writer.next().write_sequence(|writer| {
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writer.next().write_oid(&oid);
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writer.next().write_null();
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});
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writer
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.next()
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.write_bitvec(&bit_vec::BitVec::from_bytes(&bytes));
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});
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});
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let p = pem::Pem {
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tag: "PUBLIC KEY".to_owned(),
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contents,
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};
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Ok(pem::encode(&p))
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}
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fn from_pem_pkcs8(pem: &str) -> Result<Self, KeyError> {
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let data = pem::parse(pem).map_err(|_| KeyError::Pem)?;
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if data.tag != "PUBLIC KEY" {
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return Err(KeyError::Kind);
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}
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data.try_into().map_err(KeyError::Parse)
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}
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fn to_pem_pkcs1(&self) -> Result<String, KeyError> {
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let contents = write_pkcs1(self);
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let p = pem::Pem {
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tag: "RSA PUBLIC KEY".to_owned(),
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contents,
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};
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Ok(pem::encode(&p))
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}
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fn from_pem_pkcs1(pem: &str) -> Result<Self, KeyError> {
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let data = pem::parse(pem).map_err(|_| KeyError::Pem)?;
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if data.tag != "RSA PUBLIC KEY" {
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return Err(KeyError::Kind);
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}
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data.try_into().map_err(KeyError::Parse)
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}
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}
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fn write_pkcs1(rsa: &RSAPublicKey) -> Vec<u8> {
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yasna::construct_der(|writer| {
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writer.write_sequence(|writer| {
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writer.next().write_biguint(&from_dig(rsa.n()));
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writer.next().write_biguint(&from_dig(rsa.e()));
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})
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})
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}
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