C++

Hungary NAV Invoicing Signature Calculation

See more Hungary NAV Invoicing Examples

Demonstrates the requestSignature calculation for the Hungarian NAV Online Invoicing System REST API v2.0.

Note: This example requires Chilkat v9.5.0.83 or greater.

C++

#include <CkCrypt2.h>
#include <CkStringBuilder.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  This example assumes the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    //  This example performs the following calculation:

    //  1.5.1 Calculations for manageInvoice and manageAnnulment operations
    //  
    //  For the manageInvoice and manageAnnulment operations comprising the core of requestSignature, 
    //  requestSignature is calculated using partial authentication, concatenating the hash values for 
    //  indices 1-100 as well as additional SHA3-512 hash operations. The partial authentication can be 
    //  derived by concatenating the following values:
    //  
    //    - requestId value
    //    - UTC timestamp tag value using a YYYYMMDDhhmmss mask
    //    - string literal of the technical user�s signature key
    //  
    //  When concatenating, the date and time separators as well as the time zone must be removed for timestamp masking.
    //  
    //  The index hash value can be derived from the uppercase SHA3-512 hash values following the concatenation of the 
    //  operation and base64 content for the individual indices:
    //  
    //    - literal value of invoiceOperation or annulmentOperation
    //    - base64 content in the invoiceData or invoiceAnnulment tag
    //  
    //  The calculated hash values should be appended after the partial hash, in the order corresponding to the indices. 
    //  The SHA3-512 hash result (capitals) of the string thus concatenated yields the requestSignature value.
    //  
    //  A fictitious example for request data:
    //  
    //  	- requestId = TSTKFT1222564
    //  	- timestamp = 2017-12-30T18:25:45.000Z
    //  	- technical user�s signature key = ce-8f5e-215119fa7dd621DLMRHRLH2S
    //  	- the index#1 invoice data items
    //  	- invoiceOperation = CREATE
    //  	- invoiceData = QWJjZDEyMzQ=
    //  	- the index#2 invoice data items
    //  	- invoiceOperation = MODIFY
    //  	- invoiceData = RGNiYTQzMjE=
    //  	- partial authentication value = TSTKFT122256420171230182545ce-8f5e-215119fa7dd621DLMRHRLH2S
    //  	- the first index hash =
    //  		- hash base = CREATEQWJjZDEyMzQ=
    //  		- lowercase hash = 4317798460962869bc67f07c48ea7e4a3afa301513ceb87b8eb94ecf92bc220a89c480f87f0860e85e29a3b6c0463d4f29712c5ad48104a6486ce839dc2f24cb
    //  		- uppercase hash = 4317798460962869BC67F07C48EA7E4A3AFA301513CEB87B8EB94ECF92BC220A89C480F87F0860E85E29A3B6C0463D4F29712C5AD48104A6486CE839DC2F24CB
    //  	- the second index hash =
    //  		- hash base = MODIFYRGNiYTQzMjE=
    //  		- lowercase hash = a881218238933f6ffb9e167445cb4daa9749bcf484fde48ab7649fd25e8b634a4736a65a7c4a8e2831119f739837e006566f97370415aad55e268605206f2a6c
    //  		- uppercase hash = A881218238933F6FFB9E167445CB4DAA9749BCF484FDE48AB7649FD25E8B634A4736A65A7C4A8E2831119F739837E006566F97370415AAD55E268605206F2A6C
    //  
    //  Thus, the base for the entire requestSignature is:
    //  	TSTKFT122256420171230182545ce-8f5e-215119fa7dd621DLMRHRLH2S4317798460962869BC67F07C48EA7E4A3AFA301513CEB87B8EB94ECF92BC220A89C480F87F0860E85E29A3B6C0463D4F29712C5AD48104A6486CE839DC2F24CBA881218238933F6FFB9E167445CB4DAA9749BCF484FDE48AB7649FD25E8B634A4736A65A7C4A8E2831119F739837E006566F97370415AAD55E268605206F2A6C
    //  
    //  Value of requestSignature after SHA3-512 hashing and converting to uppercase:
    //  	60BC80609EE3B8F42FE904200A49A1921A1DADA08D55319ACD40C59F626514B74EEA49011D372600A10DBCF8199D590DA9C2841D987308F2D83DAE17C2470C42
    //  
    //  -------------------

    CkCrypt2 crypt;

    //  IMPORTANT: This example requires Chilkat v9.5.0.83 or greater.  The SHA3 hash algorithm is implemented in Chilkat v9.5.0.83, but not in earlier versions.
    //  IMPORTANT: This example requires Chilkat v9.5.0.83 or greater.  The SHA3 hash algorithm is implemented in Chilkat v9.5.0.83, but not in earlier versions.
    //  IMPORTANT: This example requires Chilkat v9.5.0.83 or greater.  The SHA3 hash algorithm is implemented in Chilkat v9.5.0.83, but not in earlier versions.
    //  IMPORTANT: This example requires Chilkat v9.5.0.83 or greater.  The SHA3 hash algorithm is implemented in Chilkat v9.5.0.83, but not in earlier versions.
    //  IMPORTANT: This example requires Chilkat v9.5.0.83 or greater.  The SHA3 hash algorithm is implemented in Chilkat v9.5.0.83, but not in earlier versions.
    crypt.put_HashAlgorithm("sha3-512");
    crypt.put_EncodingMode("hex");

    const char *requestId = "TSTKFT1222564";
    const char *timestamp = "2017-12-30T18:25:45.000Z";
    const char *signatureKey = "ce-8f5e-215119fa7dd621DLMRHRLH2S";

    //  Step 1: Concatenate requestId, UTC timestamp, and user's signature key.
    CkStringBuilder sbFinalHashBase;

    //  First append the timestamp because we are going to remove certain chars/parts.
    sbFinalHashBase.Append(timestamp);
    int numReplaced = sbFinalHashBase.Replace(".000Z","");
    numReplaced = sbFinalHashBase.Replace("-","");
    numReplaced = sbFinalHashBase.Replace(":","");
    numReplaced = sbFinalHashBase.Replace("T","");

    //  Prepend the requestId and append the signatureKey
    sbFinalHashBase.Prepend(requestId);
    sbFinalHashBase.Append(signatureKey);

    //  Step 2: Calculate first index hash.
    const char *invoiceOperation = "CREATE";
    const char *invoiceData = "QWJjZDEyMzQ=";

    CkStringBuilder sbHashBase;
    sbHashBase.Append(invoiceOperation);
    sbHashBase.Append(invoiceData);
    std::cout << "first hash base = " << sbHashBase.getAsString() << "\r\n";

    const char *firstHash = crypt.hashStringENC(sbHashBase.getAsString());
    std::cout << "first hash = " << firstHash << "\r\n";

    //  Output should be:
    //  first hash base = CREATEQWJjZDEyMzQ=
    //  first hash = 4317798460962869BC67F07C48EA7E4A3AFA301513CEB87B8EB94ECF92BC220A89C480F87F0860E85E29A3B6C0463D4F29712C5AD48104A6486CE839DC2F24CB

    //  Step 3: Calculate second index hash.
    invoiceOperation = "MODIFY";
    invoiceData = "RGNiYTQzMjE=";

    sbHashBase.Clear();
    sbHashBase.Append(invoiceOperation);
    sbHashBase.Append(invoiceData);
    std::cout << "second hash base = " << sbHashBase.getAsString() << "\r\n";

    const char *secondHash = crypt.hashStringENC(sbHashBase.getAsString());
    std::cout << "second hash = " << secondHash << "\r\n";

    //  Output should be:
    //  second hash base = MODIFYRGNiYTQzMjE=
    //  second hash = A881218238933F6FFB9E167445CB4DAA9749BCF484FDE48AB7649FD25E8B634A4736A65A7C4A8E2831119F739837E006566F97370415AAD55E268605206F2A6C

    //  Step 4: Append the uppercase hex hashes to the sbFinalHashBase
    sbFinalHashBase.Append(firstHash);
    sbFinalHashBase.Append(secondHash);
    std::cout << "sbFinalHashBase = " << sbFinalHashBase.getAsString() << "\r\n";

    //  Step 5: SHA3-512 hash to get the requestSignature
    const char *requestSignature = crypt.hashStringENC(sbFinalHashBase.getAsString());
    std::cout << "requestSignature = " << requestSignature << "\r\n";

    //  Output should be:
    //  requestSignature = 60BC80609EE3B8F42FE904200A49A1921A1DADA08D55319ACD40C59F626514B74EEA49011D372600A10DBCF8199D590DA9C2841D987308F2D83DAE17C2470C42
    }