Merge pull request #73 from jbg/master
ECDSA signing and verification (ES256, ES384)
This commit is contained in:
commit
da0f01a64f
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@ -13,7 +13,7 @@ keywords = ["jwt", "web", "api", "token", "json"]
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serde_json = "1.0"
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serde_derive = "1.0"
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serde = "1.0"
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ring = { version = "0.14", features = ["dev_urandom_fallback"] }
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base64 = "0.10"
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ring = "0.14.4"
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base64 = "0.9"
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untrusted = "0.6"
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chrono = "0.4"
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@ -18,6 +18,12 @@ pub enum Algorithm {
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/// HMAC using SHA-512
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HS512,
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/// ECDSA using SHA-256
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ES256,
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/// ECDSA using SHA-384
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ES384,
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/// RSASSA-PKCS1-v1_5 using SHA-256
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RS256,
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/// RSASSA-PKCS1-v1_5 using SHA-384
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@ -39,6 +45,8 @@ impl FromStr for Algorithm {
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"HS256" => Ok(Algorithm::HS256),
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"HS384" => Ok(Algorithm::HS384),
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"HS512" => Ok(Algorithm::HS512),
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"ES256" => Ok(Algorithm::ES256),
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"ES384" => Ok(Algorithm::ES384),
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"RS256" => Ok(Algorithm::HS256),
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"RS384" => Ok(Algorithm::HS384),
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"RS512" => Ok(Algorithm::HS512),
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@ -55,16 +63,17 @@ fn sign_hmac(alg: &'static digest::Algorithm, key: &[u8], signing_input: &str) -
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Ok(base64::encode_config::<hmac::Signature>(&digest, base64::URL_SAFE_NO_PAD))
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}
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/// The actual ECDSA signing + encoding
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fn sign_ecdsa(alg: &'static signature::EcdsaSigningAlgorithm, key: &[u8], signing_input: &str) -> Result<String> {
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let signing_key = signature::EcdsaKeyPair::from_pkcs8(alg, untrusted::Input::from(key))?;
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let rng = rand::SystemRandom::new();
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let sig = signing_key.sign(&rng, untrusted::Input::from(signing_input.as_bytes()))?;
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Ok(base64::encode_config(&sig, base64::URL_SAFE_NO_PAD))
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}
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/// The actual RSA signing + encoding
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/// Taken from Ring doc https://briansmith.org/rustdoc/ring/signature/index.html
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fn sign_rsa(alg: Algorithm, key: &[u8], signing_input: &str) -> Result<String> {
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let ring_alg = match alg {
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Algorithm::RS256 => &signature::RSA_PKCS1_SHA256,
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Algorithm::RS384 => &signature::RSA_PKCS1_SHA384,
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Algorithm::RS512 => &signature::RSA_PKCS1_SHA512,
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_ => unreachable!(),
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};
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fn sign_rsa(alg: &'static signature::RsaEncoding, key: &[u8], signing_input: &str) -> Result<String> {
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let key_pair = Arc::new(
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signature::RsaKeyPair::from_der(untrusted::Input::from(key))
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.map_err(|_| ErrorKind::InvalidRsaKey)?,
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@ -72,7 +81,7 @@ fn sign_rsa(alg: Algorithm, key: &[u8], signing_input: &str) -> Result<String> {
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let mut signature = vec![0; key_pair.public_modulus_len()];
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let rng = rand::SystemRandom::new();
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key_pair
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.sign(ring_alg, &rng, signing_input.as_bytes(), &mut signature)
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.sign(alg, &rng, signing_input.as_bytes(), &mut signature)
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.map_err(|_| ErrorKind::InvalidRsaKey)?;
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Ok(base64::encode_config::<[u8]>(&signature, base64::URL_SAFE_NO_PAD))
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@ -88,15 +97,18 @@ pub fn sign(signing_input: &str, key: &[u8], algorithm: Algorithm) -> Result<Str
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Algorithm::HS384 => sign_hmac(&digest::SHA384, key, signing_input),
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Algorithm::HS512 => sign_hmac(&digest::SHA512, key, signing_input),
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Algorithm::RS256 | Algorithm::RS384 | Algorithm::RS512 => {
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sign_rsa(algorithm, key, signing_input)
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}
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Algorithm::ES256 => sign_ecdsa(&signature::ECDSA_P256_SHA256_FIXED_SIGNING, key, signing_input),
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Algorithm::ES384 => sign_ecdsa(&signature::ECDSA_P384_SHA384_FIXED_SIGNING, key, signing_input),
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Algorithm::RS256 => sign_rsa(&signature::RSA_PKCS1_SHA256, key, signing_input),
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Algorithm::RS384 => sign_rsa(&signature::RSA_PKCS1_SHA384, key, signing_input),
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Algorithm::RS512 => sign_rsa(&signature::RSA_PKCS1_SHA512, key, signing_input),
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}
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}
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/// See Ring RSA docs for more details
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fn verify_rsa(
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alg: &signature::RsaParameters,
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/// See Ring docs for more details
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fn verify_ring(
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alg: &dyn signature::VerificationAlgorithm,
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signature: &str,
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signing_input: &str,
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key: &[u8],
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@ -131,14 +143,20 @@ pub fn verify(
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let signed = sign(signing_input, key, algorithm)?;
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Ok(verify_slices_are_equal(signature.as_ref(), signed.as_ref()).is_ok())
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}
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Algorithm::ES256 => {
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verify_ring(&signature::ECDSA_P256_SHA256_FIXED, signature, signing_input, key)
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}
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Algorithm::ES384 => {
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verify_ring(&signature::ECDSA_P384_SHA384_FIXED, signature, signing_input, key)
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}
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Algorithm::RS256 => {
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verify_rsa(&signature::RSA_PKCS1_2048_8192_SHA256, signature, signing_input, key)
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verify_ring(&signature::RSA_PKCS1_2048_8192_SHA256, signature, signing_input, key)
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}
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Algorithm::RS384 => {
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verify_rsa(&signature::RSA_PKCS1_2048_8192_SHA384, signature, signing_input, key)
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verify_ring(&signature::RSA_PKCS1_2048_8192_SHA384, signature, signing_input, key)
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}
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Algorithm::RS512 => {
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verify_rsa(&signature::RSA_PKCS1_2048_8192_SHA512, signature, signing_input, key)
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verify_ring(&signature::RSA_PKCS1_2048_8192_SHA512, signature, signing_input, key)
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}
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}
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}
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@ -36,6 +36,8 @@ pub enum ErrorKind {
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InvalidToken,
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/// When the signature doesn't match
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InvalidSignature,
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/// When the secret given is not a valid ECDSA key
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InvalidEcdsaKey,
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/// When the secret given is not a valid RSA key
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InvalidRsaKey,
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/// When the algorithm from string doesn't match the one passed to `from_str`
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@ -62,6 +64,8 @@ pub enum ErrorKind {
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Json(serde_json::Error),
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/// Some of the text was invalid UTF-8
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Utf8(::std::string::FromUtf8Error),
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/// Something unspecified went wrong with crypto
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Crypto(::ring::error::Unspecified),
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/// Hints that destructuring should not be exhaustive.
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///
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@ -77,6 +81,7 @@ impl StdError for Error {
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match *self.0 {
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ErrorKind::InvalidToken => "invalid token",
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ErrorKind::InvalidSignature => "invalid signature",
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ErrorKind::InvalidEcdsaKey => "invalid ECDSA key",
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ErrorKind::InvalidRsaKey => "invalid RSA key",
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ErrorKind::ExpiredSignature => "expired signature",
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ErrorKind::InvalidIssuer => "invalid issuer",
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@ -87,6 +92,7 @@ impl StdError for Error {
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ErrorKind::Base64(ref err) => err.description(),
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ErrorKind::Json(ref err) => err.description(),
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ErrorKind::Utf8(ref err) => err.description(),
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ErrorKind::Crypto(ref err) => err.description(),
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_ => unreachable!(),
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}
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}
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@ -95,6 +101,7 @@ impl StdError for Error {
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match *self.0 {
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ErrorKind::InvalidToken => None,
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ErrorKind::InvalidSignature => None,
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ErrorKind::InvalidEcdsaKey => None,
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ErrorKind::InvalidRsaKey => None,
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ErrorKind::ExpiredSignature => None,
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ErrorKind::InvalidIssuer => None,
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@ -105,6 +112,7 @@ impl StdError for Error {
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ErrorKind::Base64(ref err) => Some(err),
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ErrorKind::Json(ref err) => Some(err),
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ErrorKind::Utf8(ref err) => Some(err),
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ErrorKind::Crypto(ref err) => Some(err),
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_ => unreachable!(),
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}
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}
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@ -115,6 +123,7 @@ impl fmt::Display for Error {
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match *self.0 {
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ErrorKind::InvalidToken => write!(f, "invalid token"),
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ErrorKind::InvalidSignature => write!(f, "invalid signature"),
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ErrorKind::InvalidEcdsaKey => write!(f, "invalid ECDSA key"),
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ErrorKind::InvalidRsaKey => write!(f, "invalid RSA key"),
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ErrorKind::ExpiredSignature => write!(f, "expired signature"),
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ErrorKind::InvalidIssuer => write!(f, "invalid issuer"),
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@ -125,6 +134,7 @@ impl fmt::Display for Error {
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ErrorKind::Base64(ref err) => write!(f, "base64 error: {}", err),
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ErrorKind::Json(ref err) => write!(f, "JSON error: {}", err),
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ErrorKind::Utf8(ref err) => write!(f, "UTF-8 error: {}", err),
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ErrorKind::Crypto(ref err) => write!(f, "Crypto error: {}", err),
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_ => unreachable!(),
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}
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}
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@ -148,6 +158,18 @@ impl From<::std::string::FromUtf8Error> for Error {
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}
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}
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impl From<::ring::error::Unspecified> for Error {
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fn from(err: ::ring::error::Unspecified) -> Error {
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new_error(ErrorKind::Crypto(err))
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}
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}
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impl From<::ring::error::KeyRejected> for Error {
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fn from(_err: ::ring::error::KeyRejected) -> Error {
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new_error(ErrorKind::InvalidEcdsaKey)
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}
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}
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impl From<ErrorKind> for Error {
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fn from(kind: ErrorKind) -> Error {
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new_error(kind)
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@ -0,0 +1,38 @@
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extern crate jsonwebtoken;
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#[macro_use]
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extern crate serde_derive;
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extern crate chrono;
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use chrono::Utc;
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use jsonwebtoken::{decode, encode, sign, verify, Algorithm, Header, Validation};
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#[derive(Debug, PartialEq, Clone, Serialize, Deserialize)]
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struct Claims {
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sub: String,
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company: String,
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exp: i64,
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}
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#[test]
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fn round_trip_sign_verification() {
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let privkey = include_bytes!("private_ecdsa_key.pk8");
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let encrypted = sign("hello world", privkey, Algorithm::ES256).unwrap();
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let pubkey = include_bytes!("public_ecdsa_key.pk8");
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let is_valid = verify(&encrypted, "hello world", pubkey, Algorithm::ES256).unwrap();
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assert!(is_valid);
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}
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#[test]
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fn round_trip_claim() {
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let my_claims = Claims {
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sub: "b@b.com".to_string(),
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company: "ACME".to_string(),
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exp: Utc::now().timestamp() + 10000,
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};
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let privkey = include_bytes!("private_ecdsa_key.pk8");
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let token = encode(&Header::new(Algorithm::ES256), &my_claims, privkey).unwrap();
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let pubkey = include_bytes!("public_ecdsa_key.pk8");
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let token_data = decode::<Claims>(&token, pubkey, &Validation::new(Algorithm::ES256)).unwrap();
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assert_eq!(my_claims, token_data.claims);
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assert!(token_data.header.kid.is_none());
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}
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@ -0,0 +1 @@
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