Xojo Plugin Requires Chilkat v11.0.0+
Xojo Plugin
Signing HTTP Messages
See more RSA Examples
Demonstrates how to sign HTTP messages per draft-cavage-http-signatures-10Chilkat Xojo Plugin Downloads
Dim success As Boolean
success = False
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
Dim bCrlf As Boolean
bCrlf = True
Dim sbPublicKeyPem As New Chilkat.StringBuilder
success = sbPublicKeyPem.AppendLine("-----BEGIN PUBLIC KEY-----",bCrlf)
success = sbPublicKeyPem.AppendLine("MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDCFENGw33yGihy92pDjZQhl0C3",bCrlf)
success = sbPublicKeyPem.AppendLine("6rPJj+CvfSC8+q28hxA161QFNUd13wuCTUcq0Qd2qsBe/2hFyc2DCJJg0h1L78+6",bCrlf)
success = sbPublicKeyPem.AppendLine("Z4UMR7EOcpfdUE9Hf3m/hs+FUR45uBJeDK1HSFHD8bHKD6kv8FPGfJTotc+2xjJw",bCrlf)
success = sbPublicKeyPem.AppendLine("oYi+1hqp1fIekaxsyQIDAQAB",bCrlf)
success = sbPublicKeyPem.AppendLine("-----END PUBLIC KEY-----",bCrlf)
Dim pubKey As New Chilkat.PublicKey
success = pubKey.LoadFromString(sbPublicKeyPem.GetAsString())
Dim sbPrivateKeyPem As New Chilkat.StringBuilder
success = sbPrivateKeyPem.AppendLine("-----BEGIN RSA PRIVATE KEY-----",bCrlf)
success = sbPrivateKeyPem.AppendLine("MIICXgIBAAKBgQDCFENGw33yGihy92pDjZQhl0C36rPJj+CvfSC8+q28hxA161QF",bCrlf)
success = sbPrivateKeyPem.AppendLine("NUd13wuCTUcq0Qd2qsBe/2hFyc2DCJJg0h1L78+6Z4UMR7EOcpfdUE9Hf3m/hs+F",bCrlf)
success = sbPrivateKeyPem.AppendLine("UR45uBJeDK1HSFHD8bHKD6kv8FPGfJTotc+2xjJwoYi+1hqp1fIekaxsyQIDAQAB",bCrlf)
success = sbPrivateKeyPem.AppendLine("AoGBAJR8ZkCUvx5kzv+utdl7T5MnordT1TvoXXJGXK7ZZ+UuvMNUCdN2QPc4sBiA",bCrlf)
success = sbPrivateKeyPem.AppendLine("QWvLw1cSKt5DsKZ8UETpYPy8pPYnnDEz2dDYiaew9+xEpubyeW2oH4Zx71wqBtOK",bCrlf)
success = sbPrivateKeyPem.AppendLine("kqwrXa/pzdpiucRRjk6vE6YY7EBBs/g7uanVpGibOVAEsqH1AkEA7DkjVH28WDUg",bCrlf)
success = sbPrivateKeyPem.AppendLine("f1nqvfn2Kj6CT7nIcE3jGJsZZ7zlZmBmHFDONMLUrXR/Zm3pR5m0tCmBqa5RK95u",bCrlf)
success = sbPrivateKeyPem.AppendLine("412jt1dPIwJBANJT3v8pnkth48bQo/fKel6uEYyboRtA5/uHuHkZ6FQF7OUkGogc",bCrlf)
success = sbPrivateKeyPem.AppendLine("mSJluOdc5t6hI1VsLn0QZEjQZMEOWr+wKSMCQQCC4kXJEsHAve77oP6HtG/IiEn7",bCrlf)
success = sbPrivateKeyPem.AppendLine("kpyUXRNvFsDE0czpJJBvL/aRFUJxuRK91jhjC68sA7NsKMGg5OXb5I5Jj36xAkEA",bCrlf)
success = sbPrivateKeyPem.AppendLine("gIT7aFOYBFwGgQAQkWNKLvySgKbAZRTeLBacpHMuQdl1DfdntvAyqpAZ0lY0RKmW",bCrlf)
success = sbPrivateKeyPem.AppendLine("G6aFKaqQfOXKCyWoUiVknQJAXrlgySFci/2ueKlIE1QqIiLSZ8V8OlpFLRnb1pzI",bCrlf)
success = sbPrivateKeyPem.AppendLine("7U1yQXnTAEFYM560yJlzUpOb1V4cScGd365tiSMvxLOvTA==",bCrlf)
success = sbPrivateKeyPem.AppendLine("-----END RSA PRIVATE KEY-----",bCrlf)
Dim privKey As New Chilkat.PrivateKey
success = privKey.LoadPem(sbPrivateKeyPem.GetAsString())
// All examples use this request:
//
// POST /foo?param=value&pet=dog HTTP/1.1
// Host: example.com
// Date: Sun, 05 Jan 2014 21:31:40 GMT
// Content-Type: application/json
// Digest: SHA-256=X48E9qOokqqrvdts8nOJRJN3OWDUoyWxBf7kbu9DBPE=
// Content-Length: 18
//
// {"hello": "world"}
// C.1. Default Test
//
// If a list of headers is not included, the date is the only header
// that is signed by default. The string to sign would be:
//
// date: Sun, 05 Jan 2014 21:31:40 GMT
//
// The Authorization header would be:
//
// Authorization: Signature keyId="Test",algorithm="rsa-sha256",
// signature="SjWJWbWN7i0wzBvtPl8rbASWz5xQW6mcJmn+ibttBqtifLN7Sazz
// 6m79cNfwwb8DMJ5cou1s7uEGKKCs+FLEEaDV5lp7q25WqS+lavg7T8hc0GppauB
// 6hbgEKTwblDHYGEtbGmtdHgVCk9SuS13F0hZ8FD0k/5OxEPXe5WozsbM="
//
// The Signature header would be:
//
// Signature: keyId="Test",algorithm="rsa-sha256",
// signature="SjWJWbWN7i0wzBvtPl8rbASWz5xQW6mcJmn+ibttBqtifLN7Sazz
// 6m79cNfwwb8DMJ5cou1s7uEGKKCs+FLEEaDV5lp7q25WqS+lavg7T8hc0GppauB
// 6hbgEKTwblDHYGEtbGmtdHgVCk9SuS13F0hZ8FD0k/5OxEPXe5WozsbM="
//
Dim dtNow As New Chilkat.CkDateTime
success = dtNow.SetFromCurrentSystemTime()
Dim dateStr As String
dateStr = dtNow.GetAsRfc822(False)
// To duplicate the above result, we'll hard-code the date string.
dateStr = "Sun, 05 Jan 2014 21:31:40 GMT"
Dim rsa As New Chilkat.Rsa
success = rsa.UsePrivateKey(privKey)
If (success = False) Then
System.DebugLog(rsa.LastErrorText)
Return
End If
Dim sbStringToSign As New Chilkat.StringBuilder
success = sbStringToSign.Append("date: ")
success = sbStringToSign.Append(dateStr)
rsa.EncodingMode = "base64"
Dim b64Signature As String
b64Signature = rsa.SignStringENC(sbStringToSign.GetAsString(),"SHA256")
System.DebugLog(b64Signature)
System.DebugLog("---------------------------")
// The result should be:
// SjWJWbWN7i0wzBvtPl8rbASW ... FD0k/5OxEPXe5WozsbM=
// ----------------------------------------------------------------------------------------------------
// C.2. Basic Test
//
// The minimum recommended data to sign is the (request-target), host,
// and date. In this case, the string to sign would be:
//
// (request-target): post /foo?param=value&pet=dog
// host: example.com
// date: Sun, 05 Jan 2014 21:31:40 GMT
//
// The Authorization header would be:
//
// Authorization: Signature keyId="Test",algorithm="rsa-sha256",
// headers="(request-target) host date", signature="qdx+H7PHHDZgy4
// y/Ahn9Tny9V3GP6YgBPyUXMmoxWtLbHpUnXS2mg2+SbrQDMCJypxBLSPQR2aAjn
// 7ndmw2iicw3HMbe8VfEdKFYRqzic+efkb3nndiv/x1xSHDJWeSWkx3ButlYSuBs
// kLu6kd9Fswtemr3lgdDEmn04swr2Os0="
sbStringToSign.Clear
success = sbStringToSign.Append("(request-target): ")
success = sbStringToSign.AppendLine("post /foo?param=value&pet=dog",False)
success = sbStringToSign.Append("host: ")
success = sbStringToSign.AppendLine("example.com",False)
success = sbStringToSign.Append("date: ")
success = sbStringToSign.Append(dateStr)
System.DebugLog("StringToSign:")
System.DebugLog(sbStringToSign.GetAsString())
b64Signature = rsa.SignStringENC(sbStringToSign.GetAsString(),"SHA256")
System.DebugLog(b64Signature)
System.DebugLog("---------------------------")
// The result should be:
// qdx+H7PHHDZgy4y/Ahn ... mn04swr2Os0=