Visual FoxPro Requires Chilkat v11.0.0+
Visual FoxPro
Signing HTTP Messages
See more RSA Examples
Demonstrates how to sign HTTP messages per draft-cavage-http-signatures-10Chilkat Visual FoxPro Downloads
LOCAL lnSuccess
LOCAL lnBCrlf
LOCAL loSbPublicKeyPem
LOCAL loPubKey
LOCAL loSbPrivateKeyPem
LOCAL loPrivKey
LOCAL loDtNow
LOCAL lcDateStr
LOCAL loRsa
LOCAL loSbStringToSign
LOCAL lcB64Signature
lnSuccess = 0
* This example requires the Chilkat API to have been previously unlocked.
* See Global Unlock Sample for sample code.
lnBCrlf = 1
loSbPublicKeyPem = CreateObject('Chilkat.StringBuilder')
loSbPublicKeyPem.AppendLine("-----BEGIN PUBLIC KEY-----",lnBCrlf)
loSbPublicKeyPem.AppendLine("MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDCFENGw33yGihy92pDjZQhl0C3",lnBCrlf)
loSbPublicKeyPem.AppendLine("6rPJj+CvfSC8+q28hxA161QFNUd13wuCTUcq0Qd2qsBe/2hFyc2DCJJg0h1L78+6",lnBCrlf)
loSbPublicKeyPem.AppendLine("Z4UMR7EOcpfdUE9Hf3m/hs+FUR45uBJeDK1HSFHD8bHKD6kv8FPGfJTotc+2xjJw",lnBCrlf)
loSbPublicKeyPem.AppendLine("oYi+1hqp1fIekaxsyQIDAQAB",lnBCrlf)
loSbPublicKeyPem.AppendLine("-----END PUBLIC KEY-----",lnBCrlf)
loPubKey = CreateObject('Chilkat.PublicKey')
loPubKey.LoadFromString(loSbPublicKeyPem.GetAsString())
loSbPrivateKeyPem = CreateObject('Chilkat.StringBuilder')
loSbPrivateKeyPem.AppendLine("-----BEGIN RSA PRIVATE KEY-----",lnBCrlf)
loSbPrivateKeyPem.AppendLine("MIICXgIBAAKBgQDCFENGw33yGihy92pDjZQhl0C36rPJj+CvfSC8+q28hxA161QF",lnBCrlf)
loSbPrivateKeyPem.AppendLine("NUd13wuCTUcq0Qd2qsBe/2hFyc2DCJJg0h1L78+6Z4UMR7EOcpfdUE9Hf3m/hs+F",lnBCrlf)
loSbPrivateKeyPem.AppendLine("UR45uBJeDK1HSFHD8bHKD6kv8FPGfJTotc+2xjJwoYi+1hqp1fIekaxsyQIDAQAB",lnBCrlf)
loSbPrivateKeyPem.AppendLine("AoGBAJR8ZkCUvx5kzv+utdl7T5MnordT1TvoXXJGXK7ZZ+UuvMNUCdN2QPc4sBiA",lnBCrlf)
loSbPrivateKeyPem.AppendLine("QWvLw1cSKt5DsKZ8UETpYPy8pPYnnDEz2dDYiaew9+xEpubyeW2oH4Zx71wqBtOK",lnBCrlf)
loSbPrivateKeyPem.AppendLine("kqwrXa/pzdpiucRRjk6vE6YY7EBBs/g7uanVpGibOVAEsqH1AkEA7DkjVH28WDUg",lnBCrlf)
loSbPrivateKeyPem.AppendLine("f1nqvfn2Kj6CT7nIcE3jGJsZZ7zlZmBmHFDONMLUrXR/Zm3pR5m0tCmBqa5RK95u",lnBCrlf)
loSbPrivateKeyPem.AppendLine("412jt1dPIwJBANJT3v8pnkth48bQo/fKel6uEYyboRtA5/uHuHkZ6FQF7OUkGogc",lnBCrlf)
loSbPrivateKeyPem.AppendLine("mSJluOdc5t6hI1VsLn0QZEjQZMEOWr+wKSMCQQCC4kXJEsHAve77oP6HtG/IiEn7",lnBCrlf)
loSbPrivateKeyPem.AppendLine("kpyUXRNvFsDE0czpJJBvL/aRFUJxuRK91jhjC68sA7NsKMGg5OXb5I5Jj36xAkEA",lnBCrlf)
loSbPrivateKeyPem.AppendLine("gIT7aFOYBFwGgQAQkWNKLvySgKbAZRTeLBacpHMuQdl1DfdntvAyqpAZ0lY0RKmW",lnBCrlf)
loSbPrivateKeyPem.AppendLine("G6aFKaqQfOXKCyWoUiVknQJAXrlgySFci/2ueKlIE1QqIiLSZ8V8OlpFLRnb1pzI",lnBCrlf)
loSbPrivateKeyPem.AppendLine("7U1yQXnTAEFYM560yJlzUpOb1V4cScGd365tiSMvxLOvTA==",lnBCrlf)
loSbPrivateKeyPem.AppendLine("-----END RSA PRIVATE KEY-----",lnBCrlf)
loPrivKey = CreateObject('Chilkat.PrivateKey')
loPrivKey.LoadPem(loSbPrivateKeyPem.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="
*
loDtNow = CreateObject('Chilkat.CkDateTime')
lnSuccess = loDtNow.SetFromCurrentSystemTime()
lcDateStr = loDtNow.GetAsRfc822(0)
* To duplicate the above result, we'll hard-code the date string.
lcDateStr = "Sun, 05 Jan 2014 21:31:40 GMT"
loRsa = CreateObject('Chilkat.Rsa')
lnSuccess = loRsa.UsePrivateKey(loPrivKey)
IF (lnSuccess = 0) THEN
? loRsa.LastErrorText
RELEASE loSbPublicKeyPem
RELEASE loPubKey
RELEASE loSbPrivateKeyPem
RELEASE loPrivKey
RELEASE loDtNow
RELEASE loRsa
CANCEL
ENDIF
loSbStringToSign = CreateObject('Chilkat.StringBuilder')
loSbStringToSign.Append("date: ")
loSbStringToSign.Append(lcDateStr)
loRsa.EncodingMode = "base64"
lcB64Signature = loRsa.SignStringENC(loSbStringToSign.GetAsString(),"SHA256")
? lcB64Signature
? "---------------------------"
* 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="
loSbStringToSign.Clear()
loSbStringToSign.Append("(request-target): ")
loSbStringToSign.AppendLine("post /foo?param=value&pet=dog",0)
loSbStringToSign.Append("host: ")
loSbStringToSign.AppendLine("example.com",0)
loSbStringToSign.Append("date: ")
loSbStringToSign.Append(lcDateStr)
? "StringToSign:"
? loSbStringToSign.GetAsString()
lcB64Signature = loRsa.SignStringENC(loSbStringToSign.GetAsString(),"SHA256")
? lcB64Signature
? "---------------------------"
* The result should be:
* qdx+H7PHHDZgy4y/Ahn ... mn04swr2Os0=
RELEASE loSbPublicKeyPem
RELEASE loPubKey
RELEASE loSbPrivateKeyPem
RELEASE loPrivKey
RELEASE loDtNow
RELEASE loRsa
RELEASE loSbStringToSign