Lua Requires Chilkat v9.5.0.66+
Lua
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 | | +--------------+-------------------------------+--------------------+
Chilkat Lua Downloads
local chilkat = require("chilkat")
-- This requires the Chilkat API to have been previously unlocked.
-- See Global Unlock Sample for sample code.
-- 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.
local sbRsaJwk = chilkat.StringBuilder.new()
sbRsaJwk:append("{\"kty\":\"RSA\",")
sbRsaJwk:append("\"n\":\"ofgWCuLjybRlzo0tZWJjNiuSfb4p4fAkd_wWJcyQoTbji9k0l8W26mPddx")
sbRsaJwk:append("HmfHQp-Vaw-4qPCJrcS2mJPMEzP1Pt0Bm4d4QlL-yRT-SFd2lZS-pCgNMs")
sbRsaJwk:append("D1W_YpRPEwOWvG6b32690r2jZ47soMZo9wGzjb_7OMg0LOL-bSf63kpaSH")
sbRsaJwk:append("SXndS5z5rexMdbBYUsLA9e-KXBdQOS-UTo7WTBEMa2R2CapHg665xsmtdV")
sbRsaJwk:append("MTBQY4uDZlxvb3qCo5ZwKh9kG4LT6_I5IhlJH7aGhyxXFvUK-DWNmoudF8")
sbRsaJwk:append("NAco9_h9iaGNj8q2ethFkMLs91kzk2PAcDTW9gb54h4FRWyuXpoQ\",")
sbRsaJwk:append("\"e\":\"AQAB\",")
sbRsaJwk:append("\"d\":\"Eq5xpGnNCivDflJsRQBXHx1hdR1k6Ulwe2JZD50LpXyWPEAeP88vLNO97I")
sbRsaJwk:append("jlA7_GQ5sLKMgvfTeXZx9SE-7YwVol2NXOoAJe46sui395IW_GO-pWJ1O0")
sbRsaJwk:append("BkTGoVEn2bKVRUCgu-GjBVaYLU6f3l9kJfFNS3E0QbVdxzubSu3Mkqzjkn")
sbRsaJwk:append("439X0M_V51gfpRLI9JYanrC4D4qAdGcopV_0ZHHzQlBjudU2QvXt4ehNYT")
sbRsaJwk:append("CBr6XCLQUShb1juUO1ZdiYoFaFQT5Tw8bGUl_x_jTj3ccPDVZFD9pIuhLh")
sbRsaJwk:append("BOneufuBiB4cS98l2SR_RQyGWSeWjnczT0QU91p1DhOVRuOopznQ\",")
sbRsaJwk:append("\"p\":\"4BzEEOtIpmVdVEZNCqS7baC4crd0pqnRH_5IB3jw3bcxGn6QLvnEtfdUdi")
sbRsaJwk:append("YrqBdss1l58BQ3KhooKeQTa9AB0Hw_Py5PJdTJNPY8cQn7ouZ2KKDcmnPG")
sbRsaJwk:append("BY5t7yLc1QlQ5xHdwW1VhvKn-nXqhJTBgIPgtldC-KDV5z-y2XDwGUc\",")
sbRsaJwk:append("\"q\":\"uQPEfgmVtjL0Uyyx88GZFF1fOunH3-7cepKmtH4pxhtCoHqpWmT8YAmZxa")
sbRsaJwk:append("ewHgHAjLYsp1ZSe7zFYHj7C6ul7TjeLQeZD_YwD66t62wDmpe_HlB-TnBA")
sbRsaJwk:append("-njbglfIsRLtXlnDzQkv5dTltRJ11BKBBypeeF6689rjcJIDEz9RWdc\",")
sbRsaJwk:append("\"dp\":\"BwKfV3Akq5_MFZDFZCnW-wzl-CCo83WoZvnLQwCTeDv8uzluRSnm71I3Q")
sbRsaJwk:append("CLdhrqE2e9YkxvuxdBfpT_PI7Yz-FOKnu1R6HsJeDCjn12Sk3vmAktV2zb")
sbRsaJwk:append("34MCdy7cpdTh_YVr7tss2u6vneTwrA86rZtu5Mbr1C1XsmvkxHQAdYo0\",")
sbRsaJwk:append("\"dq\":\"h_96-mK1R_7glhsum81dZxjTnYynPbZpHziZjeeHcXYsXaaMwkOlODsWa")
sbRsaJwk:append("7I9xXDoRwbKgB719rrmI2oKr6N3Do9U0ajaHF-NKJnwgjMd2w9cjz3_-ky")
sbRsaJwk:append("NlxAr2v4IKhGNpmM5iIgOS1VZnOZ68m6_pbLBSp3nssTdlqvd0tIiTHU\",")
sbRsaJwk:append("\"qi\":\"IYd7DHOhrWvxkwPQsRM2tOgrjbcrfvtQJipd-DlcxyVuuM9sQLdgjVk2o")
sbRsaJwk:append("y26F0EmpScGLq2MowX7fhd_QJQ3ydy5cY7YIBi87w93IKLEdfnbJtoOPLU")
sbRsaJwk:append("W0ITrJReOgo1cq9SbsxYawBgfp_gh6A5603k2-ZQwVK0JKSHuLFkuQ3U\"")
sbRsaJwk:append("}")
local rsaKey = chilkat.PrivateKey.new()
-- 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..)
local success = rsaKey:load_jwk(sbRsaJwk:get_as_string())
if not success then
print(rsaKey.last_error_text)
return
end
-- ---------------------------------------------------
-- Use the following ECC key loaded from JWK format.
local sbEccJwk = chilkat.StringBuilder.new()
sbEccJwk:append("{\"kty\":\"EC\",")
sbEccJwk:append("\"crv\":\"P-256\",")
sbEccJwk:append("\"x\":\"f83OJ3D2xF1Bg8vub9tLe1gHMzV76e8Tus9uPHvRVEU\",")
sbEccJwk:append("\"y\":\"x_FEzRu9m36HLN_tue659LNpXW6pCyStikYjKIWI5a0\",")
sbEccJwk:append("\"d\":\"jpsQnnGQmL-YBIffH1136cspYG6-0iY7X1fCE9-E9LI\"")
sbEccJwk:append("}")
local eccKey = chilkat.PrivateKey.new()
-- 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:load_jwk(sbEccJwk:get_as_string())
if not success then
print(eccKey.last_error_text)
return
end
-- ---------------------------------------------------
-- The HMAC key (in base64url format)
local hmacKey = "AyM1SysPpbyDfgZld3umj1qzKObwVMkoqQ-EstJQLr_T-1qS0gZH75aKtMN3Yj0iPS4hcgUuTwjAzZr1Z9CAow"
-- ---------------------------------------------------
-- Prepare the headers..
-- RSASSA-PKCS1-v1_5 SHA-256
local jwsProtHdr0 = chilkat.JsonObject.new()
jwsProtHdr0:append_string("alg", "RS256")
local jwsUnprotHdr0 = chilkat.JsonObject.new()
jwsUnprotHdr0:append_string("kid", "myRsaKey")
-- ECDSA using P-256 and SHA-256
local jwsProtHdr1 = chilkat.JsonObject.new()
jwsProtHdr1:append_string("alg", "ES256")
local jwsUnprotHdr1 = chilkat.JsonObject.new()
jwsUnprotHdr1:append_string("kid", "myEcKey")
-- HMAC using SHA-256
local jwsProtHdr2 = chilkat.JsonObject.new()
jwsProtHdr2:append_string("alg", "HS256")
local jwsUnprotHdr2 = chilkat.JsonObject.new()
jwsUnprotHdr2:append_string("kid", "myMacKey")
-- ---------------------------------------------------
-- First set the JWS headers, keys, and payload, then we'll create the JWS...
local jws = chilkat.Jws.new()
jws:set_protected_header(0, jwsProtHdr0)
jws:set_unprotected_header(0, jwsUnprotHdr0)
jws:set_protected_header(1, jwsProtHdr1)
jws:set_unprotected_header(1, jwsUnprotHdr1)
jws:set_protected_header(2, jwsProtHdr2)
jws:set_unprotected_header(2, jwsUnprotHdr2)
jws:set_private_key(0, rsaKey)
jws:set_private_key(1, eccKey)
jws:set_mac_key(2, hmacKey, "base64url")
local bIncludeBom = false
local payloadStr = "In our village, folks say God crumbles up the old moon into stars."
jws:set_payload(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.
local jwsStr = jws:create_jws()
if not jws.last_method_success then
print(jws.last_error_text)
return
end
-- 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..
local json = chilkat.JsonObject.new()
json:load(jwsStr)
json.emit_compact = 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"
-- }
-- ]
-- }