Unicode C
Unicode C
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 Unicode C Downloads
#include <C_CkStringBuilderW.h>
#include <C_CkPrivateKeyW.h>
#include <C_CkJsonObjectW.h>
#include <C_CkJwsW.h>
void ChilkatSample(void)
{
BOOL success;
HCkStringBuilderW sbRsaJwk;
HCkPrivateKeyW rsaKey;
HCkStringBuilderW sbEccJwk;
HCkPrivateKeyW eccKey;
const wchar_t *hmacKey;
HCkJsonObjectW jwsProtHdr0;
HCkJsonObjectW jwsUnprotHdr0;
HCkJsonObjectW jwsProtHdr1;
HCkJsonObjectW jwsUnprotHdr1;
HCkJsonObjectW jwsProtHdr2;
HCkJsonObjectW jwsUnprotHdr2;
HCkJwsW jws;
BOOL bIncludeBom;
const wchar_t *payloadStr;
const wchar_t *jwsStr;
HCkJsonObjectW json;
success = 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.
sbRsaJwk = CkStringBuilderW_Create();
CkStringBuilderW_Append(sbRsaJwk,L"{\"kty\":\"RSA\",");
CkStringBuilderW_Append(sbRsaJwk,L"\"n\":\"ofgWCuLjybRlzo0tZWJjNiuSfb4p4fAkd_wWJcyQoTbji9k0l8W26mPddx");
CkStringBuilderW_Append(sbRsaJwk,L"HmfHQp-Vaw-4qPCJrcS2mJPMEzP1Pt0Bm4d4QlL-yRT-SFd2lZS-pCgNMs");
CkStringBuilderW_Append(sbRsaJwk,L"D1W_YpRPEwOWvG6b32690r2jZ47soMZo9wGzjb_7OMg0LOL-bSf63kpaSH");
CkStringBuilderW_Append(sbRsaJwk,L"SXndS5z5rexMdbBYUsLA9e-KXBdQOS-UTo7WTBEMa2R2CapHg665xsmtdV");
CkStringBuilderW_Append(sbRsaJwk,L"MTBQY4uDZlxvb3qCo5ZwKh9kG4LT6_I5IhlJH7aGhyxXFvUK-DWNmoudF8");
CkStringBuilderW_Append(sbRsaJwk,L"NAco9_h9iaGNj8q2ethFkMLs91kzk2PAcDTW9gb54h4FRWyuXpoQ\",");
CkStringBuilderW_Append(sbRsaJwk,L"\"e\":\"AQAB\",");
CkStringBuilderW_Append(sbRsaJwk,L"\"d\":\"Eq5xpGnNCivDflJsRQBXHx1hdR1k6Ulwe2JZD50LpXyWPEAeP88vLNO97I");
CkStringBuilderW_Append(sbRsaJwk,L"jlA7_GQ5sLKMgvfTeXZx9SE-7YwVol2NXOoAJe46sui395IW_GO-pWJ1O0");
CkStringBuilderW_Append(sbRsaJwk,L"BkTGoVEn2bKVRUCgu-GjBVaYLU6f3l9kJfFNS3E0QbVdxzubSu3Mkqzjkn");
CkStringBuilderW_Append(sbRsaJwk,L"439X0M_V51gfpRLI9JYanrC4D4qAdGcopV_0ZHHzQlBjudU2QvXt4ehNYT");
CkStringBuilderW_Append(sbRsaJwk,L"CBr6XCLQUShb1juUO1ZdiYoFaFQT5Tw8bGUl_x_jTj3ccPDVZFD9pIuhLh");
CkStringBuilderW_Append(sbRsaJwk,L"BOneufuBiB4cS98l2SR_RQyGWSeWjnczT0QU91p1DhOVRuOopznQ\",");
CkStringBuilderW_Append(sbRsaJwk,L"\"p\":\"4BzEEOtIpmVdVEZNCqS7baC4crd0pqnRH_5IB3jw3bcxGn6QLvnEtfdUdi");
CkStringBuilderW_Append(sbRsaJwk,L"YrqBdss1l58BQ3KhooKeQTa9AB0Hw_Py5PJdTJNPY8cQn7ouZ2KKDcmnPG");
CkStringBuilderW_Append(sbRsaJwk,L"BY5t7yLc1QlQ5xHdwW1VhvKn-nXqhJTBgIPgtldC-KDV5z-y2XDwGUc\",");
CkStringBuilderW_Append(sbRsaJwk,L"\"q\":\"uQPEfgmVtjL0Uyyx88GZFF1fOunH3-7cepKmtH4pxhtCoHqpWmT8YAmZxa");
CkStringBuilderW_Append(sbRsaJwk,L"ewHgHAjLYsp1ZSe7zFYHj7C6ul7TjeLQeZD_YwD66t62wDmpe_HlB-TnBA");
CkStringBuilderW_Append(sbRsaJwk,L"-njbglfIsRLtXlnDzQkv5dTltRJ11BKBBypeeF6689rjcJIDEz9RWdc\",");
CkStringBuilderW_Append(sbRsaJwk,L"\"dp\":\"BwKfV3Akq5_MFZDFZCnW-wzl-CCo83WoZvnLQwCTeDv8uzluRSnm71I3Q");
CkStringBuilderW_Append(sbRsaJwk,L"CLdhrqE2e9YkxvuxdBfpT_PI7Yz-FOKnu1R6HsJeDCjn12Sk3vmAktV2zb");
CkStringBuilderW_Append(sbRsaJwk,L"34MCdy7cpdTh_YVr7tss2u6vneTwrA86rZtu5Mbr1C1XsmvkxHQAdYo0\",");
CkStringBuilderW_Append(sbRsaJwk,L"\"dq\":\"h_96-mK1R_7glhsum81dZxjTnYynPbZpHziZjeeHcXYsXaaMwkOlODsWa");
CkStringBuilderW_Append(sbRsaJwk,L"7I9xXDoRwbKgB719rrmI2oKr6N3Do9U0ajaHF-NKJnwgjMd2w9cjz3_-ky");
CkStringBuilderW_Append(sbRsaJwk,L"NlxAr2v4IKhGNpmM5iIgOS1VZnOZ68m6_pbLBSp3nssTdlqvd0tIiTHU\",");
CkStringBuilderW_Append(sbRsaJwk,L"\"qi\":\"IYd7DHOhrWvxkwPQsRM2tOgrjbcrfvtQJipd-DlcxyVuuM9sQLdgjVk2o");
CkStringBuilderW_Append(sbRsaJwk,L"y26F0EmpScGLq2MowX7fhd_QJQ3ydy5cY7YIBi87w93IKLEdfnbJtoOPLU");
CkStringBuilderW_Append(sbRsaJwk,L"W0ITrJReOgo1cq9SbsxYawBgfp_gh6A5603k2-ZQwVK0JKSHuLFkuQ3U\"");
CkStringBuilderW_Append(sbRsaJwk,L"}");
rsaKey = CkPrivateKeyW_Create();
// 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 = CkPrivateKeyW_LoadJwk(rsaKey,CkStringBuilderW_getAsString(sbRsaJwk));
if (success != TRUE) {
wprintf(L"%s\n",CkPrivateKeyW_lastErrorText(rsaKey));
CkStringBuilderW_Dispose(sbRsaJwk);
CkPrivateKeyW_Dispose(rsaKey);
return;
}
// ---------------------------------------------------
// Use the following ECC key loaded from JWK format.
sbEccJwk = CkStringBuilderW_Create();
CkStringBuilderW_Append(sbEccJwk,L"{\"kty\":\"EC\",");
CkStringBuilderW_Append(sbEccJwk,L"\"crv\":\"P-256\",");
CkStringBuilderW_Append(sbEccJwk,L"\"x\":\"f83OJ3D2xF1Bg8vub9tLe1gHMzV76e8Tus9uPHvRVEU\",");
CkStringBuilderW_Append(sbEccJwk,L"\"y\":\"x_FEzRu9m36HLN_tue659LNpXW6pCyStikYjKIWI5a0\",");
CkStringBuilderW_Append(sbEccJwk,L"\"d\":\"jpsQnnGQmL-YBIffH1136cspYG6-0iY7X1fCE9-E9LI\"");
CkStringBuilderW_Append(sbEccJwk,L"}");
eccKey = CkPrivateKeyW_Create();
// 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 = CkPrivateKeyW_LoadJwk(eccKey,CkStringBuilderW_getAsString(sbEccJwk));
if (success != TRUE) {
wprintf(L"%s\n",CkPrivateKeyW_lastErrorText(eccKey));
CkStringBuilderW_Dispose(sbRsaJwk);
CkPrivateKeyW_Dispose(rsaKey);
CkStringBuilderW_Dispose(sbEccJwk);
CkPrivateKeyW_Dispose(eccKey);
return;
}
// ---------------------------------------------------
// The HMAC key (in base64url format)
hmacKey = L"AyM1SysPpbyDfgZld3umj1qzKObwVMkoqQ-EstJQLr_T-1qS0gZH75aKtMN3Yj0iPS4hcgUuTwjAzZr1Z9CAow";
// ---------------------------------------------------
// Prepare the headers..
// RSASSA-PKCS1-v1_5 SHA-256
jwsProtHdr0 = CkJsonObjectW_Create();
CkJsonObjectW_AppendString(jwsProtHdr0,L"alg",L"RS256");
jwsUnprotHdr0 = CkJsonObjectW_Create();
CkJsonObjectW_AppendString(jwsUnprotHdr0,L"kid",L"myRsaKey");
// ECDSA using P-256 and SHA-256
jwsProtHdr1 = CkJsonObjectW_Create();
CkJsonObjectW_AppendString(jwsProtHdr1,L"alg",L"ES256");
jwsUnprotHdr1 = CkJsonObjectW_Create();
CkJsonObjectW_AppendString(jwsUnprotHdr1,L"kid",L"myEcKey");
// HMAC using SHA-256
jwsProtHdr2 = CkJsonObjectW_Create();
CkJsonObjectW_AppendString(jwsProtHdr2,L"alg",L"HS256");
jwsUnprotHdr2 = CkJsonObjectW_Create();
CkJsonObjectW_AppendString(jwsUnprotHdr2,L"kid",L"myMacKey");
// ---------------------------------------------------
// First set the JWS headers, keys, and payload, then we'll create the JWS...
jws = CkJwsW_Create();
CkJwsW_SetProtectedHeader(jws,0,jwsProtHdr0);
CkJwsW_SetUnprotectedHeader(jws,0,jwsUnprotHdr0);
CkJwsW_SetProtectedHeader(jws,1,jwsProtHdr1);
CkJwsW_SetUnprotectedHeader(jws,1,jwsUnprotHdr1);
CkJwsW_SetProtectedHeader(jws,2,jwsProtHdr2);
CkJwsW_SetUnprotectedHeader(jws,2,jwsUnprotHdr2);
CkJwsW_SetPrivateKey(jws,0,rsaKey);
CkJwsW_SetPrivateKey(jws,1,eccKey);
CkJwsW_SetMacKey(jws,2,hmacKey,L"base64url");
bIncludeBom = FALSE;
payloadStr = L"In our village, folks say God crumbles up the old moon into stars.";
CkJwsW_SetPayload(jws,payloadStr,L"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 = CkJwsW_createJws(jws);
if (CkJwsW_getLastMethodSuccess(jws) != TRUE) {
wprintf(L"%s\n",CkJwsW_lastErrorText(jws));
CkStringBuilderW_Dispose(sbRsaJwk);
CkPrivateKeyW_Dispose(rsaKey);
CkStringBuilderW_Dispose(sbEccJwk);
CkPrivateKeyW_Dispose(eccKey);
CkJsonObjectW_Dispose(jwsProtHdr0);
CkJsonObjectW_Dispose(jwsUnprotHdr0);
CkJsonObjectW_Dispose(jwsProtHdr1);
CkJsonObjectW_Dispose(jwsUnprotHdr1);
CkJsonObjectW_Dispose(jwsProtHdr2);
CkJsonObjectW_Dispose(jwsUnprotHdr2);
CkJwsW_Dispose(jws);
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..
json = CkJsonObjectW_Create();
CkJsonObjectW_Load(json,jwsStr);
CkJsonObjectW_putEmitCompact(json,FALSE);
wprintf(L"%s\n",CkJsonObjectW_emit(json));
// 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"
// }
// ]
// }
CkStringBuilderW_Dispose(sbRsaJwk);
CkPrivateKeyW_Dispose(rsaKey);
CkStringBuilderW_Dispose(sbEccJwk);
CkPrivateKeyW_Dispose(eccKey);
CkJsonObjectW_Dispose(jwsProtHdr0);
CkJsonObjectW_Dispose(jwsUnprotHdr0);
CkJsonObjectW_Dispose(jwsProtHdr1);
CkJsonObjectW_Dispose(jwsUnprotHdr1);
CkJsonObjectW_Dispose(jwsProtHdr2);
CkJsonObjectW_Dispose(jwsUnprotHdr2);
CkJwsW_Dispose(jws);
CkJsonObjectW_Dispose(json);
}