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(PowerBuilder) Create JWS with Multiple Signatures using the General JSON Serialization Format

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 ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_SbRsaJwk
oleobject loo_RsaKey
integer li_Success
oleobject loo_SbEccJwk
oleobject loo_EccKey
string ls_HmacKey
oleobject loo_JwsProtHdr0
oleobject loo_JwsUnprotHdr0
oleobject loo_JwsProtHdr1
oleobject loo_JwsUnprotHdr1
oleobject loo_JwsProtHdr2
oleobject loo_JwsUnprotHdr2
oleobject loo_Jws
integer li_BIncludeBom
string ls_PayloadStr
string ls_JwsStr
oleobject loo_Json

// 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.
loo_SbRsaJwk = create oleobject
li_rc = loo_SbRsaJwk.ConnectToNewObject("Chilkat_9_5_0.StringBuilder")
if li_rc < 0 then
    destroy loo_SbRsaJwk
    MessageBox("Error","Connecting to COM object failed")
    return
end if
loo_SbRsaJwk.Append("{\"kty\":\"RSA\",")
loo_SbRsaJwk.Append("\"n\":\"ofgWCuLjybRlzo0tZWJjNiuSfb4p4fAkd_wWJcyQoTbji9k0l8W26mPddx")
loo_SbRsaJwk.Append("HmfHQp-Vaw-4qPCJrcS2mJPMEzP1Pt0Bm4d4QlL-yRT-SFd2lZS-pCgNMs")
loo_SbRsaJwk.Append("D1W_YpRPEwOWvG6b32690r2jZ47soMZo9wGzjb_7OMg0LOL-bSf63kpaSH")
loo_SbRsaJwk.Append("SXndS5z5rexMdbBYUsLA9e-KXBdQOS-UTo7WTBEMa2R2CapHg665xsmtdV")
loo_SbRsaJwk.Append("MTBQY4uDZlxvb3qCo5ZwKh9kG4LT6_I5IhlJH7aGhyxXFvUK-DWNmoudF8")
loo_SbRsaJwk.Append("NAco9_h9iaGNj8q2ethFkMLs91kzk2PAcDTW9gb54h4FRWyuXpoQ\",")
loo_SbRsaJwk.Append("\"e\":\"AQAB\",")
loo_SbRsaJwk.Append("\"d\":\"Eq5xpGnNCivDflJsRQBXHx1hdR1k6Ulwe2JZD50LpXyWPEAeP88vLNO97I")
loo_SbRsaJwk.Append("jlA7_GQ5sLKMgvfTeXZx9SE-7YwVol2NXOoAJe46sui395IW_GO-pWJ1O0")
loo_SbRsaJwk.Append("BkTGoVEn2bKVRUCgu-GjBVaYLU6f3l9kJfFNS3E0QbVdxzubSu3Mkqzjkn")
loo_SbRsaJwk.Append("439X0M_V51gfpRLI9JYanrC4D4qAdGcopV_0ZHHzQlBjudU2QvXt4ehNYT")
loo_SbRsaJwk.Append("CBr6XCLQUShb1juUO1ZdiYoFaFQT5Tw8bGUl_x_jTj3ccPDVZFD9pIuhLh")
loo_SbRsaJwk.Append("BOneufuBiB4cS98l2SR_RQyGWSeWjnczT0QU91p1DhOVRuOopznQ\",")
loo_SbRsaJwk.Append("\"p\":\"4BzEEOtIpmVdVEZNCqS7baC4crd0pqnRH_5IB3jw3bcxGn6QLvnEtfdUdi")
loo_SbRsaJwk.Append("YrqBdss1l58BQ3KhooKeQTa9AB0Hw_Py5PJdTJNPY8cQn7ouZ2KKDcmnPG")
loo_SbRsaJwk.Append("BY5t7yLc1QlQ5xHdwW1VhvKn-nXqhJTBgIPgtldC-KDV5z-y2XDwGUc\",")
loo_SbRsaJwk.Append("\"q\":\"uQPEfgmVtjL0Uyyx88GZFF1fOunH3-7cepKmtH4pxhtCoHqpWmT8YAmZxa")
loo_SbRsaJwk.Append("ewHgHAjLYsp1ZSe7zFYHj7C6ul7TjeLQeZD_YwD66t62wDmpe_HlB-TnBA")
loo_SbRsaJwk.Append("-njbglfIsRLtXlnDzQkv5dTltRJ11BKBBypeeF6689rjcJIDEz9RWdc\",")
loo_SbRsaJwk.Append("\"dp\":\"BwKfV3Akq5_MFZDFZCnW-wzl-CCo83WoZvnLQwCTeDv8uzluRSnm71I3Q")
loo_SbRsaJwk.Append("CLdhrqE2e9YkxvuxdBfpT_PI7Yz-FOKnu1R6HsJeDCjn12Sk3vmAktV2zb")
loo_SbRsaJwk.Append("34MCdy7cpdTh_YVr7tss2u6vneTwrA86rZtu5Mbr1C1XsmvkxHQAdYo0\",")
loo_SbRsaJwk.Append("\"dq\":\"h_96-mK1R_7glhsum81dZxjTnYynPbZpHziZjeeHcXYsXaaMwkOlODsWa")
loo_SbRsaJwk.Append("7I9xXDoRwbKgB719rrmI2oKr6N3Do9U0ajaHF-NKJnwgjMd2w9cjz3_-ky")
loo_SbRsaJwk.Append("NlxAr2v4IKhGNpmM5iIgOS1VZnOZ68m6_pbLBSp3nssTdlqvd0tIiTHU\",")
loo_SbRsaJwk.Append("\"qi\":\"IYd7DHOhrWvxkwPQsRM2tOgrjbcrfvtQJipd-DlcxyVuuM9sQLdgjVk2o")
loo_SbRsaJwk.Append("y26F0EmpScGLq2MowX7fhd_QJQ3ydy5cY7YIBi87w93IKLEdfnbJtoOPLU")
loo_SbRsaJwk.Append("W0ITrJReOgo1cq9SbsxYawBgfp_gh6A5603k2-ZQwVK0JKSHuLFkuQ3U\"")
loo_SbRsaJwk.Append("}")

loo_RsaKey = create oleobject
li_rc = loo_RsaKey.ConnectToNewObject("Chilkat_9_5_0.PrivateKey")

// 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..)
li_Success = loo_RsaKey.LoadJwk(loo_SbRsaJwk.GetAsString())
if li_Success <> 1 then
    Write-Debug loo_RsaKey.LastErrorText
    destroy loo_SbRsaJwk
    destroy loo_RsaKey
    return
end if

// ---------------------------------------------------
// Use the following ECC key loaded from JWK format.
loo_SbEccJwk = create oleobject
li_rc = loo_SbEccJwk.ConnectToNewObject("Chilkat_9_5_0.StringBuilder")

loo_SbEccJwk.Append("{\"kty\":\"EC\",")
loo_SbEccJwk.Append("\"crv\":\"P-256\",")
loo_SbEccJwk.Append("\"x\":\"f83OJ3D2xF1Bg8vub9tLe1gHMzV76e8Tus9uPHvRVEU\",")
loo_SbEccJwk.Append("\"y\":\"x_FEzRu9m36HLN_tue659LNpXW6pCyStikYjKIWI5a0\",")
loo_SbEccJwk.Append("\"d\":\"jpsQnnGQmL-YBIffH1136cspYG6-0iY7X1fCE9-E9LI\"")
loo_SbEccJwk.Append("}")

loo_EccKey = create oleobject
li_rc = loo_EccKey.ConnectToNewObject("Chilkat_9_5_0.PrivateKey")

// 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..)
li_Success = loo_EccKey.LoadJwk(loo_SbEccJwk.GetAsString())
if li_Success <> 1 then
    Write-Debug loo_EccKey.LastErrorText
    destroy loo_SbRsaJwk
    destroy loo_RsaKey
    destroy loo_SbEccJwk
    destroy loo_EccKey
    return
end if

// ---------------------------------------------------
// The HMAC key (in base64url format)
ls_HmacKey = "AyM1SysPpbyDfgZld3umj1qzKObwVMkoqQ-EstJQLr_T-1qS0gZH75aKtMN3Yj0iPS4hcgUuTwjAzZr1Z9CAow"

// ---------------------------------------------------
// Prepare the headers..
// RSASSA-PKCS1-v1_5 SHA-256
loo_JwsProtHdr0 = create oleobject
li_rc = loo_JwsProtHdr0.ConnectToNewObject("Chilkat_9_5_0.JsonObject")

loo_JwsProtHdr0.AppendString("alg","RS256")
loo_JwsUnprotHdr0 = create oleobject
li_rc = loo_JwsUnprotHdr0.ConnectToNewObject("Chilkat_9_5_0.JsonObject")

loo_JwsUnprotHdr0.AppendString("kid","myRsaKey")

// ECDSA using P-256 and SHA-256
loo_JwsProtHdr1 = create oleobject
li_rc = loo_JwsProtHdr1.ConnectToNewObject("Chilkat_9_5_0.JsonObject")

loo_JwsProtHdr1.AppendString("alg","ES256")
loo_JwsUnprotHdr1 = create oleobject
li_rc = loo_JwsUnprotHdr1.ConnectToNewObject("Chilkat_9_5_0.JsonObject")

loo_JwsUnprotHdr1.AppendString("kid","myEcKey")

// HMAC using SHA-256
loo_JwsProtHdr2 = create oleobject
li_rc = loo_JwsProtHdr2.ConnectToNewObject("Chilkat_9_5_0.JsonObject")

loo_JwsProtHdr2.AppendString("alg","HS256")
loo_JwsUnprotHdr2 = create oleobject
li_rc = loo_JwsUnprotHdr2.ConnectToNewObject("Chilkat_9_5_0.JsonObject")

loo_JwsUnprotHdr2.AppendString("kid","myMacKey")

// ---------------------------------------------------
// First set the JWS headers, keys, and payload, then we'll create the JWS...
loo_Jws = create oleobject
li_rc = loo_Jws.ConnectToNewObject("Chilkat_9_5_0.Jws")

loo_Jws.SetProtectedHeader(0,loo_JwsProtHdr0)
loo_Jws.SetUnprotectedHeader(0,loo_JwsUnprotHdr0)
loo_Jws.SetProtectedHeader(1,loo_JwsProtHdr1)
loo_Jws.SetUnprotectedHeader(1,loo_JwsUnprotHdr1)
loo_Jws.SetProtectedHeader(2,loo_JwsProtHdr2)
loo_Jws.SetUnprotectedHeader(2,loo_JwsUnprotHdr2)

loo_Jws.SetPrivateKey(0,loo_RsaKey)
loo_Jws.SetPrivateKey(1,loo_EccKey)
loo_Jws.SetMacKey(2,ls_HmacKey,"base64url")

li_BIncludeBom = 0
ls_PayloadStr = "In our village, folks say God crumbles up the old moon into stars."
loo_Jws.SetPayload(ls_PayloadStr,"utf-8",li_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.
ls_JwsStr = loo_Jws.CreateJws()
if loo_Jws.LastMethodSuccess <> 1 then
    Write-Debug loo_Jws.LastErrorText
    destroy loo_SbRsaJwk
    destroy loo_RsaKey
    destroy loo_SbEccJwk
    destroy loo_EccKey
    destroy loo_JwsProtHdr0
    destroy loo_JwsUnprotHdr0
    destroy loo_JwsProtHdr1
    destroy loo_JwsUnprotHdr1
    destroy loo_JwsProtHdr2
    destroy loo_JwsUnprotHdr2
    destroy loo_Jws
    return
end if

// 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..
loo_Json = create oleobject
li_rc = loo_Json.ConnectToNewObject("Chilkat_9_5_0.JsonObject")

loo_Json.Load(ls_JwsStr)
loo_Json.EmitCompact = 0
Write-Debug loo_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"
//     }
//   ]
// }


destroy loo_SbRsaJwk
destroy loo_RsaKey
destroy loo_SbEccJwk
destroy loo_EccKey
destroy loo_JwsProtHdr0
destroy loo_JwsUnprotHdr0
destroy loo_JwsProtHdr1
destroy loo_JwsUnprotHdr1
destroy loo_JwsProtHdr2
destroy loo_JwsUnprotHdr2
destroy loo_Jws
destroy loo_Json

 

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