Rust Requires Chilkat v11.0.0+
Rust
Validate JWS with Multiple Signatures using the General JSON Serialization Format
See more JSON Web Signatures (JWS) Examples
Validates and recovers data and headers from a JSON Web Signature (JWS) containing 3 signatures.Note: Chilkat supports all of the following JWS algorithms:
+--------------+-------------------------------+--------------------+ | "alg" Param | Digital Signature or MAC | Implementation | | Value | Algorithm | Requirements | +--------------+-------------------------------+--------------------+ | HS256 | HMAC using SHA-256 | Required | | HS384 | HMAC using SHA-384 | Optional | | HS512 | HMAC using SHA-512 | Optional | | RS256 | RSASSA-PKCS1-v1_5 using | Recommended | | | SHA-256 | | | RS384 | RSASSA-PKCS1-v1_5 using | Optional | | | SHA-384 | | | RS512 | RSASSA-PKCS1-v1_5 using | Optional | | | SHA-512 | | | ES256 | ECDSA using P-256 and SHA-256 | Recommended+ | | ES384 | ECDSA using P-384 and SHA-384 | Optional | | ES512 | ECDSA using P-521 and SHA-512 | Optional | | PS256 | RSASSA-PSS using SHA-256 and | Optional | | | MGF1 with SHA-256 | | | PS384 | RSASSA-PSS using SHA-384 and | Optional | | | MGF1 with SHA-384 | | | PS512 | RSASSA-PSS using SHA-512 and | Optional | | | MGF1 with SHA-512 | | +--------------+-------------------------------+--------------------+
Chilkat Rust Downloads
// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// First, prepare the public keys that will be needed for each signature.
// ---------------------------------------------------
// Use the following RSA key loaded from JWK format.
let sb_rsa_jwk = chilkat::StringBuilder::new();
let _ = sb_rsa_jwk.append("{\"kty\":\"RSA\",");
let _ = sb_rsa_jwk.append("\"n\":\"ofgWCuLjybRlzo0tZWJjNiuSfb4p4fAkd_wWJcyQoTbji9k0l8W26mPddx");
let _ = sb_rsa_jwk.append("HmfHQp-Vaw-4qPCJrcS2mJPMEzP1Pt0Bm4d4QlL-yRT-SFd2lZS-pCgNMs");
let _ = sb_rsa_jwk.append("D1W_YpRPEwOWvG6b32690r2jZ47soMZo9wGzjb_7OMg0LOL-bSf63kpaSH");
let _ = sb_rsa_jwk.append("SXndS5z5rexMdbBYUsLA9e-KXBdQOS-UTo7WTBEMa2R2CapHg665xsmtdV");
let _ = sb_rsa_jwk.append("MTBQY4uDZlxvb3qCo5ZwKh9kG4LT6_I5IhlJH7aGhyxXFvUK-DWNmoudF8");
let _ = sb_rsa_jwk.append("NAco9_h9iaGNj8q2ethFkMLs91kzk2PAcDTW9gb54h4FRWyuXpoQ\",");
let _ = sb_rsa_jwk.append("\"e\":\"AQAB\"");
let _ = sb_rsa_jwk.append("}");
let rsa_key = chilkat::PublicKey::new();
if rsa_key.load_from_string(&sb_rsa_jwk.get_as_string().unwrap_or_default()).is_err() {
println!("{}", rsa_key.last_error_text());
return;
}
// ---------------------------------------------------
// Use the following ECC public key loaded from JWK format.
let sb_ecc_jwk = chilkat::StringBuilder::new();
let _ = sb_ecc_jwk.append("{\"kty\":\"EC\",");
let _ = sb_ecc_jwk.append("\"crv\":\"P-256\",");
let _ = sb_ecc_jwk.append("\"x\":\"f83OJ3D2xF1Bg8vub9tLe1gHMzV76e8Tus9uPHvRVEU\",");
let _ = sb_ecc_jwk.append("\"y\":\"x_FEzRu9m36HLN_tue659LNpXW6pCyStikYjKIWI5a0\"");
let _ = sb_ecc_jwk.append("}");
let ecc_key = chilkat::PublicKey::new();
if ecc_key.load_from_string(&sb_ecc_jwk.get_as_string().unwrap_or_default()).is_err() {
println!("{}", ecc_key.last_error_text());
return;
}
// ---------------------------------------------------
// The HMAC key (in base64url format)
let hmac_key = "AyM1SysPpbyDfgZld3umj1qzKObwVMkoqQ-EstJQLr_T-1qS0gZH75aKtMN3Yj0iPS4hcgUuTwjAzZr1Z9CAow".to_string();
// The code below will verify each of the signatures in this JWS:
// {
// "payload": "SW4gb3VyIHZpbGxhZ2UsIGZvbGtzIHNheSBHb2QgY3J1bWJsZXMgdXAgdGhlIG9sZCBtb29uIGludG8gc3RhcnMu",
// "signatures": [
// {
// "protected": "eyJhbGciOiJSUzI1NiIsImtpZCI6Im15UnNhS2V5In0",
// "signature": "IPMQ02niTQDwLzsRZSCaEm9VEyAX_AVe3HWjniNt9kW-a8d6ZVbd2k6jGae8s1yIh0cgxDnXQ6-p6_sBI0cnMO0xpuJANhh2vFtNJl5lisad94-H3mB3lSfafRqxeYp5D8bh39BPv7y3PrUNVMQdKEJp_D5oJ0ROPTIYx3EG8eJQOx1HO0KqhcUo401XR6KSsIyFm5joBLNKTVzxZUTT1RRZZtwTdeZkbGevugIOX_9gHAtARpV6WaFA4Vvjnq8X9wPgqjWNCQRupadhTPz0JAsa-wy5vXQjsFlXAn43mDPpMfna5Ab3F5pS4yDwkbX6nRn7XBxH1SnnNJRFholQZw"
// },
// {
// "protected": "eyJhbGciOiJFUzI1NiIsImtpZCI6Im15RWNLZXkifQ",
// "signature": "1OQtaT3pgZmkDxvlfghvxL_8kX16WIen6u1MadEq1pA4qytA0--_EwZDNk00GDPWFpoJtKznibMZzLOg_UhHIw"
// },
// {
// "protected": "eyJhbGciOiJIUzI1NiIsImtpZCI6Im15TWFjS2V5In0",
// "signature": "YY8yVjmJJfy7YJOn3uUydG8WCY2PEuCvOLil5Ks5lnw"
// }
// ]
// }
let sb_jws = chilkat::StringBuilder::new();
let _ = sb_jws.append("{ ");
let _ = sb_jws.append(" \"payload\": \"SW4gb3VyIHZpbGxhZ2UsIGZvbGtzIHNheSBHb2QgY3J1bWJsZXMgdXAgdGhlIG9sZCBtb29uIGludG8gc3RhcnMu\",");
let _ = sb_jws.append(" \"signatures\": [");
let _ = sb_jws.append(" { ");
let _ = sb_jws.append(" \"protected\": \"eyJhbGciOiJSUzI1NiIsImtpZCI6Im15UnNhS2V5In0\",");
let _ = sb_jws.append(" \"signature\": \"IPMQ02niTQDwLzsRZSCaEm9VEyAX_AVe3HWjniNt9kW-a8d6ZVbd2k6jGae8s1yIh0cgxDnXQ6-p6_sBI0cnMO0xpuJANhh2vFtNJl5lisad94-H3mB3lSfafRqxeYp5D8bh39BPv7y3PrUNVMQdKEJp_D5oJ0ROPTIYx3EG8eJQOx1HO0KqhcUo401XR6KSsIyFm5joBLNKTVzxZUTT1RRZZtwTdeZkbGevugIOX_9gHAtARpV6WaFA4Vvjnq8X9wPgqjWNCQRupadhTPz0JAsa-wy5vXQjsFlXAn43mDPpMfna5Ab3F5pS4yDwkbX6nRn7XBxH1SnnNJRFholQZw\"");
let _ = sb_jws.append(" },");
let _ = sb_jws.append(" { ");
let _ = sb_jws.append(" \"protected\": \"eyJhbGciOiJFUzI1NiIsImtpZCI6Im15RWNLZXkifQ\",");
let _ = sb_jws.append(" \"signature\": \"1OQtaT3pgZmkDxvlfghvxL_8kX16WIen6u1MadEq1pA4qytA0--_EwZDNk00GDPWFpoJtKznibMZzLOg_UhHIw\"");
let _ = sb_jws.append(" },");
let _ = sb_jws.append(" { ");
let _ = sb_jws.append(" \"protected\": \"eyJhbGciOiJIUzI1NiIsImtpZCI6Im15TWFjS2V5In0\",");
let _ = sb_jws.append(" \"signature\": \"YY8yVjmJJfy7YJOn3uUydG8WCY2PEuCvOLil5Ks5lnw\"");
let _ = sb_jws.append(" }");
let _ = sb_jws.append(" ]");
let _ = sb_jws.append("}");
let jws = chilkat::Jws::new();
if jws.load_jws_sb(&sb_jws).is_err() {
println!("{}", jws.last_error_text());
return;
}
// The payload is easily accessible:
println!("Payload: {}", jws.get_payload("utf-8").unwrap_or_default());
let sb_key_id = chilkat::StringBuilder::new();
let b_case_sensitive = false;
let prot_header = chilkat::JsonObject::new();
let num_signatures = jws.num_signatures();
let mut i = 0;
while i < num_signatures {
if jws.get_protected_h(i, &prot_header).is_err() {
println!("{}", jws.last_error_text());
return;
}
println!("--------------------------");
println!("{}: ", i);
// Get the protected header.
prot_header.set_emit_compact(false);
println!("{}", prot_header.emit().unwrap_or_default());
// Get the key ID ("kid") member.
// Note: In this example, the "kid" values are contained in the protected headers.
// They could've just as easily been located in unprotected headers. In that case,
// we would've called GetUnprotectedH instead of GetProtectedH(i).
sb_key_id.clear();
let _ = sb_key_id.append(&prot_header.string_of("kid").unwrap_or_default());
// Set the key based on key ID.
if sb_key_id.contents_equal("myRsaKey", b_case_sensitive) {
let _ = jws.set_public_key(i, &rsa_key);
}
if sb_key_id.contents_equal("myEcKey", b_case_sensitive) {
let _ = jws.set_public_key(i, &ecc_key);
}
if sb_key_id.contents_equal("myMacKey", b_case_sensitive) {
let _ = jws.set_mac_key(i, &hmac_key, "base64url");
}
// Validate this signature.
let v = jws.validate(i);
if v < 0 {
// Perhaps Chilkat was not unlocked or the trial expired..
println!("Validate failed for some other reason.");
println!("{}", jws.last_error_text());
} else {
if v == 0 {
println!("Invalid signature. The key was incorrect, the JWS was invalid, or both.");
} else {
println!("Signature validated.");
}
}
i = i + 1;
}
// The output of this program is:
// Payload: In our village, folks say God crumbles up the old moon into stars.
// --------------------------
// 0:
// {
// "alg": "RS256",
// "kid": "myRsaKey"
// }
//
// Signature validated.
// --------------------------
// 1:
// {
// "alg": "ES256",
// "kid": "myEcKey"
// }
//
// Signature validated.
// --------------------------
// 2:
// {
// "alg": "HS256",
// "kid": "myMacKey"
// }
//
// Signature validated.