Swift
Swift
Create JWS with Multiple Signatures using the General JSON Serialization Format
See more JSON Web Signatures (JWS) Examples
Creates a JSON Web Signature (JWS) containing 3 signatures and output using the general JSON serialization format.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 | | +--------------+-------------------------------+--------------------+
Note: This example requires Chilkat v9.5.0.66 or greater.
Chilkat Swift Downloads
func chilkatTest() {
var success: Bool = false
// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// Note: This example requires Chilkat v9.5.0.66 or greater.
// The JWS to be created will contain three signatures.
// The 1st will use an ECC key, the 2nd an RSA key, and the 3rd an HMAC key.
// Prepare each key..
// ---------------------------------------------------
// Use the following RSA key loaded from JWK format.
let sbRsaJwk = CkoStringBuilder()!
sbRsaJwk.append(value: "{\"kty\":\"RSA\",")
sbRsaJwk.append(value: "\"n\":\"ofgWCuLjybRlzo0tZWJjNiuSfb4p4fAkd_wWJcyQoTbji9k0l8W26mPddx")
sbRsaJwk.append(value: "HmfHQp-Vaw-4qPCJrcS2mJPMEzP1Pt0Bm4d4QlL-yRT-SFd2lZS-pCgNMs")
sbRsaJwk.append(value: "D1W_YpRPEwOWvG6b32690r2jZ47soMZo9wGzjb_7OMg0LOL-bSf63kpaSH")
sbRsaJwk.append(value: "SXndS5z5rexMdbBYUsLA9e-KXBdQOS-UTo7WTBEMa2R2CapHg665xsmtdV")
sbRsaJwk.append(value: "MTBQY4uDZlxvb3qCo5ZwKh9kG4LT6_I5IhlJH7aGhyxXFvUK-DWNmoudF8")
sbRsaJwk.append(value: "NAco9_h9iaGNj8q2ethFkMLs91kzk2PAcDTW9gb54h4FRWyuXpoQ\",")
sbRsaJwk.append(value: "\"e\":\"AQAB\",")
sbRsaJwk.append(value: "\"d\":\"Eq5xpGnNCivDflJsRQBXHx1hdR1k6Ulwe2JZD50LpXyWPEAeP88vLNO97I")
sbRsaJwk.append(value: "jlA7_GQ5sLKMgvfTeXZx9SE-7YwVol2NXOoAJe46sui395IW_GO-pWJ1O0")
sbRsaJwk.append(value: "BkTGoVEn2bKVRUCgu-GjBVaYLU6f3l9kJfFNS3E0QbVdxzubSu3Mkqzjkn")
sbRsaJwk.append(value: "439X0M_V51gfpRLI9JYanrC4D4qAdGcopV_0ZHHzQlBjudU2QvXt4ehNYT")
sbRsaJwk.append(value: "CBr6XCLQUShb1juUO1ZdiYoFaFQT5Tw8bGUl_x_jTj3ccPDVZFD9pIuhLh")
sbRsaJwk.append(value: "BOneufuBiB4cS98l2SR_RQyGWSeWjnczT0QU91p1DhOVRuOopznQ\",")
sbRsaJwk.append(value: "\"p\":\"4BzEEOtIpmVdVEZNCqS7baC4crd0pqnRH_5IB3jw3bcxGn6QLvnEtfdUdi")
sbRsaJwk.append(value: "YrqBdss1l58BQ3KhooKeQTa9AB0Hw_Py5PJdTJNPY8cQn7ouZ2KKDcmnPG")
sbRsaJwk.append(value: "BY5t7yLc1QlQ5xHdwW1VhvKn-nXqhJTBgIPgtldC-KDV5z-y2XDwGUc\",")
sbRsaJwk.append(value: "\"q\":\"uQPEfgmVtjL0Uyyx88GZFF1fOunH3-7cepKmtH4pxhtCoHqpWmT8YAmZxa")
sbRsaJwk.append(value: "ewHgHAjLYsp1ZSe7zFYHj7C6ul7TjeLQeZD_YwD66t62wDmpe_HlB-TnBA")
sbRsaJwk.append(value: "-njbglfIsRLtXlnDzQkv5dTltRJ11BKBBypeeF6689rjcJIDEz9RWdc\",")
sbRsaJwk.append(value: "\"dp\":\"BwKfV3Akq5_MFZDFZCnW-wzl-CCo83WoZvnLQwCTeDv8uzluRSnm71I3Q")
sbRsaJwk.append(value: "CLdhrqE2e9YkxvuxdBfpT_PI7Yz-FOKnu1R6HsJeDCjn12Sk3vmAktV2zb")
sbRsaJwk.append(value: "34MCdy7cpdTh_YVr7tss2u6vneTwrA86rZtu5Mbr1C1XsmvkxHQAdYo0\",")
sbRsaJwk.append(value: "\"dq\":\"h_96-mK1R_7glhsum81dZxjTnYynPbZpHziZjeeHcXYsXaaMwkOlODsWa")
sbRsaJwk.append(value: "7I9xXDoRwbKgB719rrmI2oKr6N3Do9U0ajaHF-NKJnwgjMd2w9cjz3_-ky")
sbRsaJwk.append(value: "NlxAr2v4IKhGNpmM5iIgOS1VZnOZ68m6_pbLBSp3nssTdlqvd0tIiTHU\",")
sbRsaJwk.append(value: "\"qi\":\"IYd7DHOhrWvxkwPQsRM2tOgrjbcrfvtQJipd-DlcxyVuuM9sQLdgjVk2o")
sbRsaJwk.append(value: "y26F0EmpScGLq2MowX7fhd_QJQ3ydy5cY7YIBi87w93IKLEdfnbJtoOPLU")
sbRsaJwk.append(value: "W0ITrJReOgo1cq9SbsxYawBgfp_gh6A5603k2-ZQwVK0JKSHuLFkuQ3U\"")
sbRsaJwk.append(value: "}")
let rsaKey = CkoPrivateKey()!
// Note: This example loads the RSA key from JWK format. Any format can be loaded
// into the private key object. (See the online reference documentation..)
success = rsaKey.loadJwk(jsonStr: sbRsaJwk.getAsString())
if success != true {
print("\(rsaKey.lastErrorText!)")
return
}
// ---------------------------------------------------
// Use the following ECC key loaded from JWK format.
let sbEccJwk = CkoStringBuilder()!
sbEccJwk.append(value: "{\"kty\":\"EC\",")
sbEccJwk.append(value: "\"crv\":\"P-256\",")
sbEccJwk.append(value: "\"x\":\"f83OJ3D2xF1Bg8vub9tLe1gHMzV76e8Tus9uPHvRVEU\",")
sbEccJwk.append(value: "\"y\":\"x_FEzRu9m36HLN_tue659LNpXW6pCyStikYjKIWI5a0\",")
sbEccJwk.append(value: "\"d\":\"jpsQnnGQmL-YBIffH1136cspYG6-0iY7X1fCE9-E9LI\"")
sbEccJwk.append(value: "}")
let eccKey = CkoPrivateKey()!
// Note: This example loads the ECDSA key from JWK format. Any format can be loaded
// into the private key object. (See the online reference documentation..)
success = eccKey.loadJwk(jsonStr: sbEccJwk.getAsString())
if success != true {
print("\(eccKey.lastErrorText!)")
return
}
// ---------------------------------------------------
// The HMAC key (in base64url format)
var hmacKey: String? = "AyM1SysPpbyDfgZld3umj1qzKObwVMkoqQ-EstJQLr_T-1qS0gZH75aKtMN3Yj0iPS4hcgUuTwjAzZr1Z9CAow"
// ---------------------------------------------------
// Prepare the headers..
// RSASSA-PKCS1-v1_5 SHA-256
let jwsProtHdr0 = CkoJsonObject()!
jwsProtHdr0.appendString(name: "alg", value: "RS256")
let jwsUnprotHdr0 = CkoJsonObject()!
jwsUnprotHdr0.appendString(name: "kid", value: "myRsaKey")
// ECDSA using P-256 and SHA-256
let jwsProtHdr1 = CkoJsonObject()!
jwsProtHdr1.appendString(name: "alg", value: "ES256")
let jwsUnprotHdr1 = CkoJsonObject()!
jwsUnprotHdr1.appendString(name: "kid", value: "myEcKey")
// HMAC using SHA-256
let jwsProtHdr2 = CkoJsonObject()!
jwsProtHdr2.appendString(name: "alg", value: "HS256")
let jwsUnprotHdr2 = CkoJsonObject()!
jwsUnprotHdr2.appendString(name: "kid", value: "myMacKey")
// ---------------------------------------------------
// First set the JWS headers, keys, and payload, then we'll create the JWS...
let jws = CkoJws()!
jws.setProtectedHeader(index: 0, json: jwsProtHdr0)
jws.setUnprotectedHeader(index: 0, json: jwsUnprotHdr0)
jws.setProtectedHeader(index: 1, json: jwsProtHdr1)
jws.setUnprotectedHeader(index: 1, json: jwsUnprotHdr1)
jws.setProtectedHeader(index: 2, json: jwsProtHdr2)
jws.setUnprotectedHeader(index: 2, json: jwsUnprotHdr2)
jws.setPrivateKey(index: 0, privKey: rsaKey)
jws.setPrivateKey(index: 1, privKey: eccKey)
jws.setMacKey(index: 2, key: hmacKey, encoding: "base64url")
var bIncludeBom: Bool = false
var payloadStr: String? = "In our village, folks say God crumbles up the old moon into stars."
jws.setPayload(payload: payloadStr, charset: "utf-8", includeBom: bIncludeBom)
// ---------------------------------------------------
// Create the JWS.
// Givent that multiple signatures will exist, only the general JSON serialization
// format is possible, and that is what will be produced.
var jwsStr: String? = jws.create()
if jws.lastMethodSuccess != true {
print("\(jws.lastErrorText!)")
return
}
// The jwsStr is contains JSON in the smallest possible size, which is a single line.
// To get in human-readable format, load into a Chilkat JSON object and emit..
let json = CkoJsonObject()!
json.load(json: jwsStr)
json.emitCompact = false
print("\(json.emit()!)")
// Sample output:
// {
// "payload": "SW4gb3VyIHZpbGxhZ2UsIGZvbGtzIHNheSBHb2QgY3J1bWJsZXMgdXAgdGhlIG9sZCBtb29uIGludG8gc3RhcnMu",
// "signatures": [
// {
// "protected": "eyJhbGciOiJSUzI1NiJ9",
// "header": {
// "kid": "myRsaKey"
// },
// "signature": "B04c24gSnpVm1Z-_bemfyNMCpZm6Knj1yB-yzaIOvijsWfDgoF_mSJccTIbzapNgwJudnobr5iDOfZWiRR9iqCyDJLe5M1S40vFF7MFEI3JecYRgrRc6n1lTkYLMRyVq48BwbQlmKgPqmK9drun3agklsr0FmgNx65pfmcnlYdXsgwxf8WbgppefrlrMImp-98-dNtBcUL8ce1aOjbcyVFjGMCzpm3JerQqIzWQvEwBstnMEQle73KHcyx_nsTmlzY70CaydbRTsciOATL7WfiMwuX1q9Y2NIpTg3CbOTWKdwjh7iyfiAKQxNBaF2mApnqj9hjpf8GwR-CfxAzJtPg"
// },
// {
// "protected": "eyJhbGciOiJFUzI1NiJ9",
// "header": {
// "kid": "myEcKey"
// },
// "signature": "2cbugKq0ERaQMh01n2B-86EZFYleeMf8bsccaQMxzOxAg14PxfjR3IImvodTJYqkmfBJYW203etz2-7ZtJUOGw"
// },
// {
// "protected": "eyJhbGciOiJIUzI1NiJ9",
// "header": {
// "kid": "myMacKey"
// },
// "signature": "e7R9gjx0RsUNa3c7qd8k9mQGEhtcG8vsN1W7jbLb2MA"
// }
// ]
// }
}