From 94ea0f5c0b2156f787b36873e16a60fc646693b1 Mon Sep 17 00:00:00 2001 From: Alexander Schuetz Date: Sun, 5 Apr 2026 02:51:27 +0200 Subject: [PATCH] fix various problems that made the crate nearly unusable 1. remove Cargo.lock from git repository, it was already in gitignore but still checked in. 2. fix all generated cerficiates were always ca certificates regardless of input. 3. fix all generated certificates always had the wrong signature algorithm nid used. They used the NID of the encryption algorithm not the signature algorithm. Most applications such as apache2 or rust-tls refused to load such certificates because they couldn't make sense of the signature. added some convinience features: 1. add easy way to generate a self signed certificate with a custom validity duration that is not 1 year from now on. 2. add easy way to output the private key from the KeyPair to a pcks8 pem file. --- Cargo.lock | 1146 ---------------------------------------------- Cargo.toml | 2 +- src/cert/mod.rs | 113 ++++- src/issuer.rs | 4 +- src/key.rs | 38 ++ tests/openssl.rs | 15 +- 6 files changed, 164 insertions(+), 1154 deletions(-) delete mode 100644 Cargo.lock diff --git a/Cargo.lock b/Cargo.lock deleted file mode 100644 index f8e1f14..0000000 --- a/Cargo.lock +++ /dev/null @@ -1,1146 +0,0 @@ -# This file is automatically @generated by Cargo. -# It is not intended for manual editing. -version = 4 - -[[package]] -name = "aho-corasick" -version = "1.1.3" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916" -dependencies = [ - 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**Internal services**: Certificates for internal-only applications /// - **Bootstrap certificates**: Initial certificates for certificate enrollment pub fn new_self_signed(cert_info: &CertificationRequestInfo, key: &KeyPair) -> Self { + let now = OffsetDateTime::now_utc(); + Self::new_self_signed_with_expiration(cert_info, key, now, now + time::Duration::days(365)) + } + + /// Creates a new self-signed certificate with the specified valid times. + /// + /// Generates a self-signed X.509 certificate where the issuer and subject + /// are the same entity. This is commonly used for root CA certificates + /// or for testing purposes. + /// + /// # Certificate Properties + /// - **Serial Number**: Fixed value of 1 + /// - **Version**: X.509 v3 + /// - **Signature Algorithm**: Automatically selected based on key type + /// + /// # Arguments + /// * `cert_info` - The certification request information containing subject details, + /// public key, extensions, and other certificate parameters + /// * `key` - The key pair used to sign the certificate (private key for signing, + /// public key typically matches the one in cert_info) + /// + /// # Returns + /// A `Certificate` object representing the self-signed certificate. + /// + /// # Examples + /// + /// ## Basic Self-Signed Certificate + /// + /// ```rust,no_run + /// use certkit::{ + /// key::KeyPair, + /// cert::{Certificate, params::{CertificationRequestInfo, DistinguishedName}}, + /// }; + /// + /// # fn main() -> Result<(), certkit::error::CertKitError> { + /// use time::OffsetDateTime; + /// let key_pair = KeyPair::generate_rsa(2048)?; + /// + /// let subject = DistinguishedName::builder() + /// .common_name("My Root CA".to_string()) + /// .organization("My Organization".to_string()) + /// .country("US".to_string()) + /// .build(); + /// + /// let cert_info = CertificationRequestInfo::builder() + /// .subject(subject) + /// .subject_public_key(certkit::key::PublicKey::from_key_pair(&key_pair)) + /// .is_ca(true) // Mark as CA certificate + /// .build(); + /// + /// let now = OffsetDateTime::now_utc(); + /// + /// let root_cert = Certificate::new_self_signed_with_expiration(&cert_info, &key_pair, now, now + time::Duration::days(365)); + /// println!("Root CA certificate created"); + /// # Ok(()) + /// # } + /// ``` + /// + /// ## Self-Signed Certificate with Extensions + /// + /// ```rust,no_run + /// use certkit::{ + /// key::KeyPair, + /// cert::{ + /// Certificate, + /// params::{CertificationRequestInfo, DistinguishedName, ExtensionParam}, + /// extensions::{SubjectAltName, ToAndFromX509Extension}, + /// }, + /// }; + /// + /// # fn main() -> Result<(), certkit::error::CertKitError> { + /// use time::OffsetDateTime; + /// let key_pair = KeyPair::generate_ecdsa_p256(); + /// + /// // Create Subject Alternative Name extension + /// let san = SubjectAltName { + /// names: vec!["localhost".to_string(), "127.0.0.1".to_string()], + /// }; + /// + /// let subject = DistinguishedName::builder() + /// .common_name("localhost".to_string()) + /// .build(); + /// + /// let cert_info = CertificationRequestInfo::builder() + /// .subject(subject) + /// .subject_public_key(certkit::key::PublicKey::from_key_pair(&key_pair)) + /// .extensions(vec![ExtensionParam::from_extension(san, false)]) + /// .build(); + /// + /// let now = OffsetDateTime::now_utc(); + /// + /// let cert = Certificate::new_self_signed_with_expiration(&cert_info, &key_pair, now, now + time::Duration::days(365)); + /// println!("Self-signed certificate with SAN created"); + /// # Ok(()) + /// # } + /// ``` + /// + /// # Use Cases + /// - **Root CA certificates**: Top-level certificates in a PKI hierarchy + /// - **Development/testing**: Quick certificate generation for testing + /// - **Internal services**: Certificates for internal-only applications + /// - **Bootstrap certificates**: Initial certificates for certificate enrollment + pub fn new_self_signed_with_expiration( + cert_info: &CertificationRequestInfo, + key: &KeyPair, + not_before: OffsetDateTime, + not_after: OffsetDateTime, + ) -> Self { let subject_dn = cert_info.subject.clone(); // For self-signed certificates, the issuer is the same as the subject @@ -524,9 +632,10 @@ impl Certificate { }; let validity = params::Validity { - not_before: OffsetDateTime::now_utc(), - not_after: OffsetDateTime::now_utc() + time::Duration::days(365), + not_before, + not_after, }; + self_issuer.issue(cert_info, validity) } } diff --git a/src/issuer.rs b/src/issuer.rs index f42f2da..cc3b02a 100644 --- a/src/issuer.rs +++ b/src/issuer.rs @@ -230,7 +230,7 @@ pub trait Issuer { }; let basic_constraints = BasicConstraints { - is_ca: true, + is_ca: cert_request.is_ca, max_path_length: None, }; @@ -299,8 +299,8 @@ pub trait Issuer { .unwrap(); let cert_inner = CertificateInner { + signature_algorithm: tbs_cert_inner.signature.clone(), tbs_certificate: tbs_cert_inner, - signature_algorithm: public_key_info.algorithm, signature: der::asn1::BitString::from_bytes(&signature).unwrap(), }; diff --git a/src/key.rs b/src/key.rs index 6d31cb6..0b59839 100644 --- a/src/key.rs +++ b/src/key.rs @@ -1,4 +1,5 @@ use crate::error::CertKitError; +use der::pem::LineEnding; pub type Result = std::result::Result; use ecdsa::VerifyingKey; @@ -103,6 +104,7 @@ pub enum KeyPair { Ed25519 { signing_key: Ed25519SigningKey }, } use p256::pkcs8::DecodePrivateKey; +use pkcs8::EncodePrivateKey; impl KeyPair { /// Generate an RSA key pair with the specified number of bits. @@ -348,6 +350,42 @@ impl KeyPair { KeyPair::Ed25519 { signing_key } => signing_key.verifying_key().to_bytes().to_vec(), } } + + /// Encodes the private key in PKCS8 PEM format + /// + /// # Examples + /// + /// ```rust + /// use certkit::key::KeyPair; + /// + /// fn some_func() -> Result<(), certkit::error::CertKitError> { + /// let rsa_key = KeyPair::generate_rsa(2048)?; + /// println!("Random RSA private key pem:\n{}", rsa_key.encode_private_key_pem().unwrap()); + /// Ok(()) + /// } + /// ``` + pub fn encode_private_key_pem(&self) -> Result { + let key = (match &self { + KeyPair::Rsa { private, .. } => private.to_pkcs8_pem(LineEnding::default()), + KeyPair::EcdsaP256 { signing_key, .. } => { + EncodePrivateKey::to_pkcs8_pem(signing_key, LineEnding::default()) + } + KeyPair::EcdsaP384 { signing_key, .. } => { + EncodePrivateKey::to_pkcs8_pem(signing_key, LineEnding::default()) + } + KeyPair::EcdsaP521 { signing_key, .. } => { + EncodePrivateKey::to_pkcs8_pem(signing_key, LineEnding::default()) + } + KeyPair::Ed25519 { signing_key, .. } => { + EncodePrivateKey::to_pkcs8_pem(signing_key, LineEnding::default()) + } + }) + .map_err(|e| e.to_string()) + .map_err(CertKitError::EncodingError)?; + + Ok(key.as_str().to_string()) + } + /// Imports a key pair from DER-encoded data. /// /// Attempts to decode DER-encoded private key data and create a `KeyPair`. diff --git a/tests/openssl.rs b/tests/openssl.rs index e70d68d..caae79f 100644 --- a/tests/openssl.rs +++ b/tests/openssl.rs @@ -45,6 +45,8 @@ fn test_openssl_validate_cert() { .arg(cert_path) .arg("-noout") .arg("-text") + //If this is not added then the output of openssl is in the users system language which breaks this test. + .env("LANG", "C") .output() .expect("Failed to execute OpenSSL command"); @@ -60,12 +62,18 @@ fn test_openssl_validate_cert() { println!("output_text {output_text}"); // Validate static fields + // Note: Different openssl versions format this field differently! assert!( - output_text.contains("Issuer: C=, ST=, L=, O=, OU=, CN=myca.local"), + output_text.contains("Issuer: C=, ST=, L=, O=, OU=, CN=myca.local") + || output_text.contains("Issuer: C = , ST = , L = , O = , OU = , CN = myca.local"), "Issuer field is incorrect" ); + + // Note: Different openssl versions format this field differently! assert!( - output_text.contains("Subject: C=, ST=, L=, O=, OU=, CN=server.myca.local"), + output_text.contains("Subject: C=, ST=, L=, O=, OU=, CN=server.myca.local") + || output_text + .contains("Subject: C = , ST = , L = , O = , OU = , CN = server.myca.local"), "Subject field is incorrect" ); assert!( @@ -166,9 +174,10 @@ fn test_openssl_crate_validate_cert() { // Check signature algorithm let sig_alg = x509.signature_algorithm().object().nid(); + assert_eq!( sig_alg, - openssl::nid::Nid::X9_62_ID_ECPUBLICKEY, + openssl::nid::Nid::ECDSA_WITH_SHA256, "Signature algorithm should be ecdsa-with-SHA256" ); }