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(VBScript) 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

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
Set outFile = fso.CreateTextFile("output.txt", True)

'  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.
set sbRsaJwk = CreateObject("Chilkat_9_5_0.StringBuilder")
success = sbRsaJwk.Append("{""kty"":""RSA"",")
success = sbRsaJwk.Append("""n"":""ofgWCuLjybRlzo0tZWJjNiuSfb4p4fAkd_wWJcyQoTbji9k0l8W26mPddx")
success = sbRsaJwk.Append("HmfHQp-Vaw-4qPCJrcS2mJPMEzP1Pt0Bm4d4QlL-yRT-SFd2lZS-pCgNMs")
success = sbRsaJwk.Append("D1W_YpRPEwOWvG6b32690r2jZ47soMZo9wGzjb_7OMg0LOL-bSf63kpaSH")
success = sbRsaJwk.Append("SXndS5z5rexMdbBYUsLA9e-KXBdQOS-UTo7WTBEMa2R2CapHg665xsmtdV")
success = sbRsaJwk.Append("MTBQY4uDZlxvb3qCo5ZwKh9kG4LT6_I5IhlJH7aGhyxXFvUK-DWNmoudF8")
success = sbRsaJwk.Append("NAco9_h9iaGNj8q2ethFkMLs91kzk2PAcDTW9gb54h4FRWyuXpoQ"",")
success = sbRsaJwk.Append("""e"":""AQAB"",")
success = sbRsaJwk.Append("""d"":""Eq5xpGnNCivDflJsRQBXHx1hdR1k6Ulwe2JZD50LpXyWPEAeP88vLNO97I")
success = sbRsaJwk.Append("jlA7_GQ5sLKMgvfTeXZx9SE-7YwVol2NXOoAJe46sui395IW_GO-pWJ1O0")
success = sbRsaJwk.Append("BkTGoVEn2bKVRUCgu-GjBVaYLU6f3l9kJfFNS3E0QbVdxzubSu3Mkqzjkn")
success = sbRsaJwk.Append("439X0M_V51gfpRLI9JYanrC4D4qAdGcopV_0ZHHzQlBjudU2QvXt4ehNYT")
success = sbRsaJwk.Append("CBr6XCLQUShb1juUO1ZdiYoFaFQT5Tw8bGUl_x_jTj3ccPDVZFD9pIuhLh")
success = sbRsaJwk.Append("BOneufuBiB4cS98l2SR_RQyGWSeWjnczT0QU91p1DhOVRuOopznQ"",")
success = sbRsaJwk.Append("""p"":""4BzEEOtIpmVdVEZNCqS7baC4crd0pqnRH_5IB3jw3bcxGn6QLvnEtfdUdi")
success = sbRsaJwk.Append("YrqBdss1l58BQ3KhooKeQTa9AB0Hw_Py5PJdTJNPY8cQn7ouZ2KKDcmnPG")
success = sbRsaJwk.Append("BY5t7yLc1QlQ5xHdwW1VhvKn-nXqhJTBgIPgtldC-KDV5z-y2XDwGUc"",")
success = sbRsaJwk.Append("""q"":""uQPEfgmVtjL0Uyyx88GZFF1fOunH3-7cepKmtH4pxhtCoHqpWmT8YAmZxa")
success = sbRsaJwk.Append("ewHgHAjLYsp1ZSe7zFYHj7C6ul7TjeLQeZD_YwD66t62wDmpe_HlB-TnBA")
success = sbRsaJwk.Append("-njbglfIsRLtXlnDzQkv5dTltRJ11BKBBypeeF6689rjcJIDEz9RWdc"",")
success = sbRsaJwk.Append("""dp"":""BwKfV3Akq5_MFZDFZCnW-wzl-CCo83WoZvnLQwCTeDv8uzluRSnm71I3Q")
success = sbRsaJwk.Append("CLdhrqE2e9YkxvuxdBfpT_PI7Yz-FOKnu1R6HsJeDCjn12Sk3vmAktV2zb")
success = sbRsaJwk.Append("34MCdy7cpdTh_YVr7tss2u6vneTwrA86rZtu5Mbr1C1XsmvkxHQAdYo0"",")
success = sbRsaJwk.Append("""dq"":""h_96-mK1R_7glhsum81dZxjTnYynPbZpHziZjeeHcXYsXaaMwkOlODsWa")
success = sbRsaJwk.Append("7I9xXDoRwbKgB719rrmI2oKr6N3Do9U0ajaHF-NKJnwgjMd2w9cjz3_-ky")
success = sbRsaJwk.Append("NlxAr2v4IKhGNpmM5iIgOS1VZnOZ68m6_pbLBSp3nssTdlqvd0tIiTHU"",")
success = sbRsaJwk.Append("""qi"":""IYd7DHOhrWvxkwPQsRM2tOgrjbcrfvtQJipd-DlcxyVuuM9sQLdgjVk2o")
success = sbRsaJwk.Append("y26F0EmpScGLq2MowX7fhd_QJQ3ydy5cY7YIBi87w93IKLEdfnbJtoOPLU")
success = sbRsaJwk.Append("W0ITrJReOgo1cq9SbsxYawBgfp_gh6A5603k2-ZQwVK0JKSHuLFkuQ3U""")
success = sbRsaJwk.Append("}")

set rsaKey = CreateObject("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..)
success = rsaKey.LoadJwk(sbRsaJwk.GetAsString())
If (success <> 1) Then
    outFile.WriteLine(rsaKey.LastErrorText)
    WScript.Quit
End If

'  ---------------------------------------------------
'  Use the following ECC key loaded from JWK format.
set sbEccJwk = CreateObject("Chilkat_9_5_0.StringBuilder")
success = sbEccJwk.Append("{""kty"":""EC"",")
success = sbEccJwk.Append("""crv"":""P-256"",")
success = sbEccJwk.Append("""x"":""f83OJ3D2xF1Bg8vub9tLe1gHMzV76e8Tus9uPHvRVEU"",")
success = sbEccJwk.Append("""y"":""x_FEzRu9m36HLN_tue659LNpXW6pCyStikYjKIWI5a0"",")
success = sbEccJwk.Append("""d"":""jpsQnnGQmL-YBIffH1136cspYG6-0iY7X1fCE9-E9LI""")
success = sbEccJwk.Append("}")

set eccKey = CreateObject("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..)
success = eccKey.LoadJwk(sbEccJwk.GetAsString())
If (success <> 1) Then
    outFile.WriteLine(eccKey.LastErrorText)
    WScript.Quit
End If

'  ---------------------------------------------------
'  The HMAC key (in base64url format)
hmacKey = "AyM1SysPpbyDfgZld3umj1qzKObwVMkoqQ-EstJQLr_T-1qS0gZH75aKtMN3Yj0iPS4hcgUuTwjAzZr1Z9CAow"

'  ---------------------------------------------------
'  Prepare the headers..
'  RSASSA-PKCS1-v1_5 SHA-256
set jwsProtHdr0 = CreateObject("Chilkat_9_5_0.JsonObject")
success = jwsProtHdr0.AppendString("alg","RS256")
set jwsUnprotHdr0 = CreateObject("Chilkat_9_5_0.JsonObject")
success = jwsUnprotHdr0.AppendString("kid","myRsaKey")

'  ECDSA using P-256 and SHA-256
set jwsProtHdr1 = CreateObject("Chilkat_9_5_0.JsonObject")
success = jwsProtHdr1.AppendString("alg","ES256")
set jwsUnprotHdr1 = CreateObject("Chilkat_9_5_0.JsonObject")
success = jwsUnprotHdr1.AppendString("kid","myEcKey")

'  HMAC using SHA-256
set jwsProtHdr2 = CreateObject("Chilkat_9_5_0.JsonObject")
success = jwsProtHdr2.AppendString("alg","HS256")
set jwsUnprotHdr2 = CreateObject("Chilkat_9_5_0.JsonObject")
success = jwsUnprotHdr2.AppendString("kid","myMacKey")

'  ---------------------------------------------------
'  First set the JWS headers, keys, and payload, then we'll create the JWS...
set jws = CreateObject("Chilkat_9_5_0.Jws")

success = jws.SetProtectedHeader(0,jwsProtHdr0)
success = jws.SetUnprotectedHeader(0,jwsUnprotHdr0)
success = jws.SetProtectedHeader(1,jwsProtHdr1)
success = jws.SetUnprotectedHeader(1,jwsUnprotHdr1)
success = jws.SetProtectedHeader(2,jwsProtHdr2)
success = jws.SetUnprotectedHeader(2,jwsUnprotHdr2)

success = jws.SetPrivateKey(0,rsaKey)
success = jws.SetPrivateKey(1,eccKey)
success = jws.SetMacKey(2,hmacKey,"base64url")

bIncludeBom = 0
payloadStr = "In our village, folks say God crumbles up the old moon into stars."
success = jws.SetPayload(payloadStr,"utf-8",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.
jwsStr = jws.CreateJws()
If (jws.LastMethodSuccess <> 1) Then
    outFile.WriteLine(jws.LastErrorText)
    WScript.Quit
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..
set json = CreateObject("Chilkat_9_5_0.JsonObject")
success = json.Load(jwsStr)
json.EmitCompact = 0
outFile.WriteLine(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"
'      }
'    ]
'  }

outFile.Close

 

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